Sustainable Environmental Remediation: Avenues in Nano and Biotechnology

Table of Contents

1. Frontmatter

2. Chapter 1. The Role of Actinomycetes in a Cleaner Environment

   Veilumuth Pattapulavar, John Godwin Christopher

   Abstract

   Actinomycetes, a diverse group of bacteria, have emerged as invaluable tools in environmental remediation due to their versatile metabolic capabilities and enzymatic diversity. This chapter delves into the pivotal role of specific actinomycete species as effective environmental cleaners across various domains. Highlighting their proficiency in addressing diverse pollutants, including heavy metals, hydrocarbons, synthetic dyes, and soil contaminants, this chapter elucidates how certain species excel in specific remediation tasks. For instance, Streptomyces spp. demonstrate remarkable efficacy in heavy metal immobilization and detoxification, contributing to ecosystem restoration. Moreover, Thermobifida fusca BCRC 19214 exhibits exceptional ability to metabolize hydrocarbons, making it instrumental in combating petroleum-based pollution in aquatic and terrestrial environments. The species Streptomyces krainskii SUK-5 plays a crucial role in soil bioremediation, enhancing soil fertility and ecosystem health. By shedding light on these specific species and their environmental remediation potential, this chapter underscores the importance of harnessing actinomycetes as effective agents for sustainable environmental cleanup initiatives.

3. Chapter 2. Harmonizing Nature and Innovation: Sustainable Environmental Solutions Through Nano-biotech Synergy

   H. Samson Prince, Nazarene Marylene Nicky Macarius, Sanket Chandrashekhar Walkikar, Shubankar Das, Anand Prem Rajan, Kanagavel Deepankumar

   Abstract

   As traditional solutions fall short in mitigating the complex issues of pollution, resource depletion, and climate change, there is a growing imperative to develop sustainable approaches that work in harmony with nature. This chapter elucidates the concept of nano-biotech synergy and its applications in various environmental domains, including water purification, air quality improvement, soil remediation, biodiversity conservation, and waste management. Through a comprehensive analysis of emerging trends, scaling-up opportunities, collaborative partnerships, and interdisciplinary approaches, the chapter outlines a roadmap for future research and innovation in the field. Additionally, it offers policy recommendations aimed at fostering responsible development and deployment of nano-biotechnological solutions. By bridging the gap between cutting-edge science and environmental stewardship, this chapter advocates for a holistic approach to sustainability that leverages the synergistic potential of nature-inspired innovation.

4. Chapter 3. Wealth Creation by Solubilization of Heavy Metals from E-Waste Using Indigenous Microorganisms—A New Approach

   Kavya Rebecca Mathew, A. Prashanth Rajan, K. Harshan, Michael Pillay, S. Jose, Anand Prem Rajan

   Abstract

   Electronic waste or e-waste is one of the rapidly growing environmental problems of the world. Recent statistics showed that there will be an increased need for various renewal substances for manufacturing machinery and automobiles, medicines, items for the construction industry, and many more industries. This calls for more efficient solutions to manage e-waste. E-waste has both toxic and valuable materials. Printed circuit boards (PCBs) are the most complex, hazardous, and valuable components of e-waste. Through the utilization of indigenous microorganisms, e-waste can be recycled and leading to avenues such as for wealth generation. Biological methods like bioleaching are used commonly because it is cost-efficient and environmentally friendly. Bioleaching also offers diverse ways to extract metals from the printed circuit board. This chapter presents a new paradigm for e-waste management, emphasizing the importance of indigenous microorganisms in wealth creation and environmental sustainability.

5. Chapter 4. Nanobioremediation: A Path to Sustainable Pesticide Remediation

   Reshma Raviuday Pednekar, Arumugam Vijaya Anand, Chandramohan, Anand Prem Rajan

   Abstract

   The widespread use of pesticides in industry and agriculture persists in environmental bodies posing significant risks to human health and the environment. Conventional bioremediation has limitations in terms of precision and efficiency but nano bioremediation is a unique approach that combines the properties of nanomaterials with the augment of pesticide bioremediation efforts. It is an innovative strategy integrating nanobiotechnology and bioremediation techniques called nano bioremediation which offers a viable approach to deal with the urgent problem of pesticide pollution in the environment with enhanced efficiency for treating these pollutants. The nanostructures act as carriers with immobilized or encapsulated remediating microbial enzymes which can facilitate the bioremediation of such hazardous materials with improved stability and delivery to the target sites. The elimination of harmful pesticide contaminants using the synergistic effect of nanoparticles and microbial technologies along with the application is the primary aim of this chapter. Also, the importance of unique nano bioremediation techniques as a sustainable and cleaner technology for pollutant remediation will be discussed.

6. Chapter 5. Red Mud Cement Colloidal Nano Silica Composites for the Heavy Metal Ion Removal from the Wastewater

   K. Athira, T. Shanmuga Priya

   Abstract

   Industrial wastewater is a significant threat to aquatic and environmental habitats. The harsh chemicals and heavy metal ions present in industrial wastewater heavily impact the equilibrium of nature. This study uses red mud (RM), an industrial waste byproduct, as a metal adsorbent over thermal processing. A recent study examined the effects of calcined red mud and colloidal nano-silica (CNS) composite on metal extraction efficiency. This study measured the concentration of Cd, Pb, As, and Cu remaining in the wastewater solution after exposure to the ternary blended red mud CNS cement samples over time using atomic absorption spectroscopy. The Red mud cement CNS mortar samples are kept in the wastewater over a period of time, and the heavy metal ion concentration in the solution before and after the exposure is measured. The results showed that a combination of ternary blended mortar with cement replacement by 1.5% CNS and 15% red mud showed the highest adsorption. Calcination significantly enhanced the metal extraction efficiency of red mud. The metal extraction efficiency order for the proposed composites is in the order of Cr > Cd > Pb > Cu. The X-ray diffraction patterns of heavy metal ions loaded samples revealed changes in silicate crystallinity and an alumina phase transition, which shows the affinity of the proposed ternary blend mortar to the heavy metal ions. Therefore, the red mud CNS nano composites can alter the mineral phases, impacting its functionality as a metal adsorbent. Hence, red mud CNS cement composites can be used as a metal extraction agent for wastewater purification.

7. Chapter 6. Extraction of Lead and Copper Metals Using Microbial Leaching Process from Electronic Waste

   N. Mahesh, T. Maheshwari, S. Balakumar

   Abstract

   Electronic wastes, sometimes referred to as garbage electrical and electronic equipments (WEEE), are a significant kind of urban garbage that contributes to widespread contamination on a global scale. E-waste is a significant threat to the environment and can cause many health hazards. This includes the release of harmful substances through incineration, pollution of food and water, and long-term exposure to recycling facilities leading to organ imbalances. These risks affect all living organisms. Typically, e-waste is produced as a result of the manufacturing of new electronic or electrical products. Furthermore, electronic trash contains a variety of useful and recyclable components, particularly metals. Precious metals such as silver, copper, gold, lead, mercury, and cadmium, which are classified as heavy metals, are obtained through the process of recycling. There are three distinct methods for recycling e-waste: the physical approach, the chemical method, and the biological method. The recycling process, using both physical and chemical methods, can lead to the generation of smoke and dust, which pose various hazardous risks. Biological leaching is the most likely and natural method for cleaning the environment and extracting various metals, as well as removing hazardous substances like Persistent Organic Pollutants (POPs). Thus, the present study focuses on utilizing cyanogenic organisms to biologically extract copper and lead metals from electronic trash through a process known as leaching. Chromobacterium violaceum MTCC-2656, Pseudomonas aeruginosa, and Pseudomonas fluorescens. The microbes MTCC-103 and Aspergillus niger MXPE6 are employed for metal extraction by generating secondary metabolites, namely Hydrogen cyanide (HCN) and citric acid, which function as leaching agents. The results obtained from Flame Atomic Absorption Spectroscopy (FAAS) indicated that the cyanogenic microbe, C. violaceum MTCC-2656, was able to extract up to 50% of copper and 60% of lead metals from 1 g of electronic waste. Additionally, P. aeruginosa was shown to leach 50% of lead metal per 0.5 g of e-waste.

8. Chapter 7. A Comparative Analysis on the Decomposition and Mitigation of Azo Dyes in Industrial Discharge Using Microbes, Nanoparticles and Nanozymes

   R. Rajeswari, S. Balakumar, N. Mahesh

   Abstract

   Release of industrial effluent into waterbodies is the major reason for the pollution of aquatic ecosystem. The major contaminant in this effluent is the azo dyes. These azo dyes are employed to impart the characteristic colour to the textiles, leather, cosmetics, paint, paper, plastics and all. Azo dyes are the man-made synthetic compounds that have the specific azo bond (N = N). They are also called as xenobiotics, the foreign compounds that are often refractory to degradation. Release of used dyes into the water resources is highly hazardous. These staining dyes reduce the transparency of water and prevent the light to penetrate into it. Further it reduces the dissolved oxygen content in the waterbodies. Without light and oxygen, all the organisms in the aquatic ecosystem are greatly affected. Further, human consumption of that water or the animals from that waterbody is highly toxic as these azo dyes can induce mutation and cause cancer. Several mechanical and chemical techniques are being used to eliminate the dye from the effluent and to reduce its toxicity. But these physiochemical techniques didn’t remove the hazardous compounds completely and produce toxic by-products. Biodegradation is the method of breaking down of carbon based compounds using microbes like bacteria, algae and fungi. As the microbes produce several enzymes, they have the metabolic ability to degrade them. Thus, microbes can be used to reduce these azo dyes. This method is cheap and eco-friendly. Owing to the emerging advancements in nanotechnology, nanoparticles (Nps) serve to be a promising means of degradation of azo dyes. Nps with their increased surface area, get oxidized and reduce the dye molecules. Further, nanozymes are the nano-sized particles with enzyme-like activity. It is a nano-metal that act like an enzyme and degrade the toxic dye compounds. It is believed to be the product of biotechnological and nano technological innovations. This review is aimed to give a critical analysis on the toxic nature of industrial effluent and to make a comparative study on the efficiency of using microbeds, Nps and Nz to degrade the toxic compounds.

9. Chapter 8. Comparative Analysis and Performance Evaluation of Sonolysis in Demineralizing Hazardous Polyquaterium Compound Under Optimum Conditions Against Sodium Laureth Sulfate

   Poojari Prasanna, Palanisamy Suresh Babu

   Abstract

   Aim: To assess the sonolytic breakdown of polyquaterium in artificial aqueous media under controlled conditions. Materials and methods: Distilled water and polyquaterium were combined to create a chemical solution that ranges in pH from 4.4 to 7. Results were recorded for each of five different time intervals, and pH values between 4.5 and 8.5 were listed in a table for each interval of ten minutes. Group 1 and group 2 of each five samples were taken for each pH solution, and a one-way Anova test was performed using IBM SPSS Version 26 to compare the samples using a numerical type of analysis with the confidence interval 95%, G-power 80%, and enrollment ratio all set to one (N = 10). Results: Freshly made polyquaterium stock solution was examined for ideal temperature and pH range. The results were examined and recorded. The initial concentration of the sample solution was set at 100 mg/L, and a pH range of 4.5 to 8.5 was taken into account. The solution’s absorbance at 540 nm wavelength was measured using a UV–Vis spectrophotometer. For statistical observation, the mean–variance was compared between Group 1 and Group 2 using a one way ANOVA test that reveals the significance value p = 0.001 (p < 0.05). Conclusion: The effectiveness of removal and the frequency of response during the sonolysis process may both be impacted by temperature. A pH and temperature were indeed two of the factors that affect how effectively polyquaterium can be taken down by sonolysis. For the breakdown of polyquaterium sonolysis operates efficiently.

10. Chapter 9. Safety Evaluation of Hygienic Sanitary Pads Made Sustainably Using Novel Pseudosasa japonica Fibre Against Super Absorbent Polymer Containing Commercial Napkins

    Peter Sharon, Palanisamy Suresh Babu

    Abstract

    Aim: The main aim of the study was to develop a sustainable serviette using a novel Pseudosasa japonica fiber sample with superior absorption and compare it with the efficiency of a locally available sanitary napkin. Materials and Methods: Processed bamboo fibres, neem leaves, cotton fabric and citric acid binder and other essential chemicals were used. Brauner-Emmett-Teller isotherm was used to evaluate the porosity and surface adsorption efficiency. Fourier Transform Infrared Spectroscopy was used to analyse the presence of functional groups present in the novel bamboo fibers. The prepared napkin was evaluated for its absorbency, test fluid, rewet under load, retention % and G power was 80%, the coincidence interval of 95% including group 1 and group 2 of 2 samples each. Results: The present study reported the performance of sustainable and phthalate free napkins made up of novel bamboo fibres and other natural ingredients. The observed results were highly promising in terms of porosity, adsorption index (7.86), antimicrobial efficacy and biodegradability. SPSS statistical analysis results depicted that the value of p was 0.001 (p < 0.05) using sample T test and which confirmed the statistical significance. Conclusion: Thus, this study was helpful to develop a simple bio-friendly sanitary napkin which was free from toxic substances with exclusive adsorbing efficacy.

11. Chapter 10. Effect of Biopolymer and Polymeric Nanoparticles for Dye Degradation

    Saranya Thayanithi, Kumar Janakiraman, Sridhar Alagesan, Abilesh Ramesh, Renugadevi Balu, Gracesuganthi Jayaraj, Vaidevi Sethuraman

    Abstract

    Environmental contamination has significantly increased when wastewater containing synthetic colors from the textile industry is discharged. These dyes pose a serious threat to aquatic ecosystems and human health. For resolving this problem, research has focused on developing sustainable and efficient methods for dye degradation. Biopolymers and polymeric nanoparticles have emerged as promising materials for dye degradation purpose. This abstract focuses on an overview of the research to investigate the effect of biopolymers and polymeric nanoparticles on dye degradation. Biopolymers, such as chitosan and alginate, have inherent biodegradability and low toxicity, making them eco-friendly options for dye removal. Additionally, polymeric nanoparticles, due to their high surface area and tunable properties, offer excellent adsorption and catalytic capabilities for dye degradation. To carry out this, various biopolymers and polymeric nanoparticles were synthesized and characterized, and their adsorption abilities for different synthetic dyes and their catalytic activities were evaluated. The use of biopolymers, when changed or combined with polymeric nanoparticles, will exhibit enhanced dye removal efficiency compared to traditional adsorbents. Moreover, incorporating catalysts into the polymeric nanoparticles improved the dyes’ degradation kinetics. This synergistic approach provided an effective and environmentally friendly strategy for dye degradation in wastewater treatment. The research findings underscore the potential of biopolymers and polymeric nanoparticles as sustainable alternatives for dye removal and degradation, contributing to the reduction of environmental pollution. These innovative materials hold promise for future applications in water treatment processes, emphasizing the importance of further exploration and optimization to address the challenges of dye pollution in a sustainable and efficient manner.

12. Chapter 11. Optimization of Chitin Extraction Using Fish Scale and Removal of Drimarene Yellow and Methyl Orange from Aqueous Solution

    P. Muthukumaran, K. Niranjan, B. Mohith, T. Vishal, S. Ramasamy, Aravind Jeyaseelan

    Abstract

    Water is essential for resource, and it is used for day-to-day life. Due to increased industrial process, both fresh water and marine water ecosystem contaminated. In industrial effluents, huge variety and classes of both organic and inorganic dyes, bleaching components used and it is directly affects natural water bodies by polluting the water quality. Literature survey showed that, various types of biopolymers which include cellulose, chitosan, chitin, alginate, xanthan gum, dextrin, carrageenan, lignin, protein are as adsorbents to remove dye. In this experimentation, initially, chitin was extracted from fish scale by optimizing demineralization, deproteination, and contact time. To screen optimum condition, Normality of HCL, Molarity of NaOH and contact time (Hours) studied to extract chitin from fish scale. Based on yield, fish scale and chitin were used as natural bio adsorbent to remove methylene blue and acid green from aqueous solution.

13. Chapter 12. Natural Polysaccharides as a Potential Eco-Friendly Adsorbent for Heavy Metal Removal

    P. Muthukumaran, C. Deeksha, M. Madhu Mallika, G. Maalika, S. B. Varshini, Aravind Jeyaseelan

    Abstract

    Water is contaminated by wide range of toxic derivatives, mostly by heavy metals. So, there is a need for the development of a technology for the removal of heavy metals. Adsorption is considered as one of the most common technique for the removal of heavy metals. Compared to other conventional methods, adsorption is considered as an effective method because of its cost effectiveness, high-capacity removal of both organic and inorganic pollutants and their simplicity. Adsorption process on natural adsorbent is a recent process that has great application on the removal of heavy metals, paints, phenols, and other organic pollutants. The present review shows the recent developments in the synthesis of adsorbents containing polysaccharides, in particular modified biopolymers derived from chitosan, starch, graphene, nano absorbents, and carbon nanotubes.

14. Chapter 13. Biopolymeric Nanomaterials as Eco-Friendly Adsorbents for Environmental Applications and Its Challenges—A Comprehensive Review

    P. Muthukumaran, G. Maalika, C. Deeksha, M. Madhu Mallika, S. B. Varshini, Aravind Jeyaseelan

    Abstract

    Pollution of water that are resulted from the discharge of effluents have been a long-standing environmental concern. Although there are many traditional methods of wastewater treatment, it fails meet the required demands which is also not cost-effective. Nanotechnology has effective strategies for the removal of waste from water, and it is capable to reuse the water. Nano technology has great potential in improving the efficiency of water prevention, purification and in terms of reducing the costs. Due to the excellent properties, nanomaterials are especially used in the field of wastewater treatment. This review paper deals with the biopolymeric nano materials as an eco-friendly adsorbent. Biopolymers have been used adsorbents, and natural flocculants in wastewater treatment. In particular, the biopolymers obtained from naturals resources are reviewed. Firstly, the types of biopolymers which include cellulose, chitosan, chitin, alginate, xanthan gum, dextrin, carrageenan, lignin, protein are reviewed along with its application as adsorbents. In the second part of article, the preparation methods for absorbents, its environmental applications and challenges are discussed in detail. Soon, it is believed that there will be continuous production of nano materials, to support the development of eco-friendly, economic, and efficient nanomaterials for real life applications. It is essential to know about the potential benefits and unknown danger of nanomaterials in the upcoming years to follow their advancements.

15. Chapter 14. Investigation of Aerosol Particle Filtration Efficiency Using Polycarbonate Electrospun Nanofibers Over 3D Printed Support

    Preethi Ravikumar

    Abstract

    The massive increase in the industrial revolution has now led to a decrease in the quality of the air, thereby increasing health problems. Air filtration has been recognized as an operational way to reduce particulate matter (PM) pollution for decades. Electrospun nanofibrous filters are regarded as an effective substitute over other air filter types due to their governable morphology with exceptional diameter/length ratio in a continuous method. In the current research, using electrospinning technique, 5 nanofibrous layers with varying concentrations were deposited over 3D printed polycarbonate (PC) support. A series of experiments were performed for electrospinning the PC nanofibers by altering various parameters such as nanofiber collection time, solvent ratio, deposition voltage, tip-to-collector distance, and polymer concentration. The filtration efficiency of the manufactured filters was evaluated, and its average fiber diameter, viscosity, conductivity, and pressure drop were measured. The nanofibrous layer exhibited a fiber diameter ranging from 0.19 ± 0.04 to 0.56 ± 0.14 μm. This nanofiber morphology enabled the filters to consistently achieve an efficient particle collection ability between 99.3 and 99.9%. Using the experimental results data, response surface plots were generated to visually represent the relationship between various factors and the desired characteristics of nanofiber media, including fiber diameter. The results show that all the nanofibers were successfully electrospun over 3D printed polycarbonate substrate and this filtering construction allowed for reaching high filtering efficiency (99.9%).

16. Chapter 15. Recent Research Trends in the Bioremediation of Emerging Contaminants

    Aravind Jeyaseelan

    Abstract

    Recent advancements in bioremediation have shown promising potential for addressing the persistent challenge of emerging contaminants in the environment. This chapter reviews the latest research trends in the bioremediation of pollutants such as pharmaceuticals, personal care products, and advanced industrial byproducts, which pose significant ecological and human health risks. We systematically analyze studies published over the last five years, focusing on microbial degradation, phytoremediation, and the development of novel bioengineered solutions. Our review highlights the increasing application of genetic engineering to enhance the efficiency of contaminant removal and the role of microbial consortia in degrading complex pollutant structures. Additionally, we assess the scalability of these approaches, their economic feasibility, and environmental impact. Our findings indicate a shift towards integrated bioremediation strategies that combine multiple biological techniques with traditional remediation methods to achieve more efficient, cost-effective, and ecologically sustainable outcomes. The paper concludes with a discussion of future research directions, emphasizing the need for more rigorous field trials and the exploration of under-studied contaminants.

17. Chapter 16. Nanoparticles and Nanomaterial Green Synthesis and Their Application as an Environmental Remediation Tool: A Mini Review

    P. Suresh Babu, M. Kamaraj, Aravind Jeyaseelan

    Abstract

    Using potentially harmful substances and byproducts have long been a problem in nanotechnology. Green synthesis uses techniques and materials that pose no risk to people and the environment. The electrochemical approach may be included in the green synthesis process. The major goal of green electrochemical synthesis is to use non-toxic electrolytes, safe chemical solvents and microbial root. Most researchers have employed electrodeposition and other straightforward electrochemical methods to create nanomaterials since they are such environmentally friendly electrochemical processes. In order to get closer to our goal of sustainable development, more researchers need to work using this eco-friendly methodology. This review paper focuses on the recent advances in the green synthesis of nanomaterials harnessed by electrochemical methods.

18. Chapter 17. Mycoremediation—A Sustainable Clear Technology for Environmental Remediation

    Rajiv Periakaruppan, P. Vanathi, G. Priyanka

    Abstract

    World environmental pollution intensified due to the rapid increase in population, urbanization, and industrialization development. Contamination of the soil and water affects both human health and the ecology. Thus, it is necessary to develop environmental cleanup technologies to diminish the environmental pollution stresses. In ancient times, conventional remediation methods have been used to address these environmental contaminants, but they have proved ineffectual. Mycoremediation, a type of bioremediation process that relies on macro and micro fungi or their constituents to remediate environmental pollutants, is an efficient, economical, safe and effective technique for detoxifying organic, inorganic, and novel toxins including metals, agricultural wastes, antibiotics and pharmaceuticals from the environment. This book chapter emphasizes the scope, process, potential and numerous mycoremediation techniques for biosorption, biotransformation, precipitation and sequestration of environmental pollution. In addition, mycoremediation’s ability to detoxify metals, organic pollutants that persist, and as well as other pollutants was reiterated. For instance, Macrofungi (mushrooms) produce various extracellular enzymes to degrade or detoxify the PAHs (Polycyclic Aromatic Hydrocarbon), pesticides, azo dyes, PCBs (Polychlorinated Biphenyls) etc. into basic compounds. The fungi such as Aspergillus niger, Agaricusbisporous, Tricholoma sp., Pleurotusdryinus, Phellinus badius etc. degrade and extract the pollutants, azo dyes and heavy metals such as Cd, Pb, Cr, Hg, Zn, Cu and Fe from the polluted soil and water. Hence, a potential outline for mycoremediation has been proposed to endorse this innovative clean-up technique for alleviating the world’s sustainable environmental issues.

19. Chapter 18. Sustainable Engineering and Applications of Metal–Organic Frameworks (MOFs) and Their Derivatives from Waste PET Bottles as a Potent Resource of Acid Linkers

    T. Sathiya Kamatchi, P. Gowthami, M. Thenmozhi, M. Devendiran, A. Arjunan, A. Kosiha

    Abstract

    The exponential rise of non-biodegradable plastic and its derived waste materials poses a serious threat to ecosystems worldwide, demanding urgent action. A key approach that emphasizes sustainability and environmental safety entails recycling these waste materials into value-added products that can be used to address a wide range of environmental issues such as water pollution, polyethylene terephthalate (PET), energy shortages, and greenhouse gas emissions. PET, a chemically stable polyester with numerous applications, has witnessed an enormous spike in production and consumption in recent decades. The expansion has resulted in a corresponding agglomeration of waste PET at alarming rates, exacerbating health and environmental issues. Current waste management protocols, including land-filling and burning, along with traditional recycling procedures generating low-value products, have culminated in a poor PET recycling rate of less than 30%, necessitating innovative solutions. One captivating avenue lies in the transformation of waste PET bottles into highly valuable metal–organic frameworks (MOFs). Among several value-added products generated from waste, MOFs hold immense potential in diverse applications such as battery engineering, sustainable catalysis, sensor applications, gas adsorption and separation. This chapter delineates the fabrication of MOF organic linkers sourced from recycled PET waste. Moreover, it explores the multiple utilities of engineered MOFs in resolving environmental challenges such as H₂ and CO₂ capture, H₂ storage, catalysis, sensing, adsorptive removal of dyes and medicinal wastes from aqueous environments, and energy applications. Each application is analyzed with a discerning eye, showcasing both the challenges and advantages inherent in their implementation while also enlightening the enormous opportunities for future breakthroughs in this flourishing field of research.

20. Chapter 19. Innovative Approaches in Microbial Bioremediation: Harnessing Synthetic Biology for Environmental Pollutants Removal

    Aishwarya Vetrivel, Suganya Ilango, Ramathilaga Ariyamuthu, Gopi Devarajan, T. G. Nithya

    Abstract

    The advancement of industry and agriculture, combined with population growth, has raised numerous concerns within the scientific community regarding the state of environmental contamination and the scarcity of natural resources. A significant pollution issue has evolved from the ongoing xenobiotic and recalcitrant compound contamination of the environment. Due to their toxicity and inability to degrade, numerous contaminants, including heavy metals, polychlorinated biphenyls, plastics, and different agrochemicals, are prevalent in the environment. Bioremediation holds a prominent role in removal of persistent pollutants from the environment. Novel bioremediation technologies are harnessed as the conventional methods of bioremediation have limitations. Recently, microbial biomass has been emphasized as an alternate approach for decontaminating environment compartments due to its distinct qualities that can be used for human advantage. Microbial bioremediation is an environmental friendly method to reduce environmental contamination brought on by various contaminants, including heavy metals, organic pollutants, and oil spills. The use of microorganisms to remove, convert, or alter environmental pollutants into harmless substances from various environmental matrices is now developing into a promising technique, attracting interest from both the scientific community and entrepreneurs. The ability to reduce environmental toxins is being made possible by the ongoing development of novel microbial bioremediation techniques. These developments have the potential to alleviate pollution issues while fostering ecological resilience and environmental sustainability. Hence, this chapter aims to give a brief summary on the most recent approaches and developments in microbial bioremediation methods that are intended to lessen the harm that the pollutants do to ecosystems.

21. Chapter 20. Nanocomposites as a Promising Tool for Remediation of Pollutants

    Hasna Abdul Salam

    Abstract

    Nanocomposites have been gaining considerable interest as a potential tool to tackle environmental issues in the past few years. More than single or pure component structures, composite structures have been found to have more power in tackling such issues. When the strength of nanocomposites combines with the eco-friendly approach of bioremediation, the result is a promising way to reduce pollution and similar other problems. In this review, we shall revisit the existing nanocomposites used for this purpose and the possibilities of developing better means and methods for the same.

22. Chapter 21. Bioremediation of Aquatic Environmental System

    P. Dhanalakshmi, P. Arunkumar, M. I. Farheena, A. Chithira, S. Uthirasamy, S. Haritha

    Abstract

    The base of a diet highly relies on quality of protein in aquatic environment. Aquaculture is growing as the demand for protein rises. Aquaculture has thus had to contend with a number of hazards including bacteria, fungus, viruses and parasites. Numerous wastes are produced by the aquaculture sector, such as nutrients, fecal matter, metabolic byproducts and beneficial and preventative materials that are crucial for maintaining water quality and preventing disease. A wide range of bioremediation tools and approach are applied to improve pond base renewal, water quality maintenance and aquatic habitat restoration. An important bioremediation approach is to use microbes for maintaining water quality. Natural antibiotics do not work on many germs, thus the government's stringent regulations for ecologically friendly therapy actions. Currently, being treated with different methods in a process called bioremediation to enhance water quality and preserve the sustainability of aquatic ecosystems. By mineralizing carbon-based materials for carbon dioxide production, nitrification, and denitrification, bioremediation can: Remove extra nitrogen from the pond; and boost primary productivity to maintain a stable and diverse pond community even in the presence of pathogens. The shape that is desired is created. In addition to heterotrophic microorganisms that break down organic materials, bioremediation also include nitrogenizing, denitrifying, and photosynthetic microbes. Controlling pond microbial communities can play a significant role in functional research aimed at enhancing global aquaculture ecology and productivity.

23. Chapter 22. Review on Microplastics as an Emerging Pollutant in Ecosystem and Its Impact: Integrated Approaches of Microplastic Biodegradation

    Suganya Ilango, Aishwarya Vetrivel, Gopi Devarajan, T. G. Nithya

    Abstract

    Microplastics are tiny plastic particles (<5 mm), which are prevalent and slowly degrading pollutant in soils and waterways, having long shelf-life period, extremely stable, high disintegration potential and capable of adsorbing other pollutants. Microplastics are easily acquired by plankton and invertebrates and are present in many marine species. At that point, microplastics pass on with food chains, causing physical damages and reduction in the nutritional content of the diet, which causes various effects in living organisms. Scientists remain unknown that, microplastics consumed by living organisms are threatening to the health, and if that was the case, what specific risks could they face. And many countries are making efforts to lessen the amount of microplastics in the environment. Microplastics are also more likely to carry various contaminants due to their adsorption properties. In fact, there is a need of modern techniques to enhance degradation of microplastics in terrestrial, aquatic and other ecosystems. Bioremediation is an emerging technique for eliminating the toxic waste, from contaminants. In the bioremediation process, contaminated regions are cleaned up using a range of microorganisms, including aerobes and anaerobes. Microorganisms are crucial for the bioremediation process because it removes, breaks down, eliminates, and inhibits toxic wastes and contaminants. Therefore, this review aims to focus on understanding the evolution, fate and impact of microplastics in environment and discuss in detail about the modern biotechnological methods to enhance microplastic bioremediation and to explore the manner in which bacteria, fungi, and algae contributes to biodegradation and proposed biotechnological techniques to speed up the process, such as bioinformatics and gene editing tools.

24. Chapter 23. Systematic Review on Role of Microorganisms in Bioremediation

    Gopi Devarajan, Suganya Ilango, Aishwarya Vetrivel, T. G. Nithya

    Abstract

    Worldwide, environmental contamination and its remediation are major problems. Heavy metals, dyes, hydrocarbons, pesticides, and other pollutants are some of the main causes of environmental deterioration. Eliminating residual contaminants is also one of the toughest challenges. Since bioremediation restores the damaged site to its previous state, it is one of the most successful methods for lowering environmental toxins. Through the action of bacteria, fungus, and plants, it degrades, removes, alters, immobilizes, or detoxifies numerous chemicals and physical wastes from the environment. Microorganisms’ natural biodegradation of complex organic compounds implies that they can be reduced to more basic inorganic forms. Bioremediation, is a technology developed by humans that employs microorganisms to reduce pollutants, methods such as bioaugmentation, biostimulation, bioventing, and bio attenuation are some of the types of bioremediation used to increase the capacity of microorganisms to degrade pollutants. These organisms will use the pollutants as a source of energy. Using symbiotic microorganisms, genetically engineered microorganisms have been used to improve pollutant cleanup and ensure safe biodegradation. Hence, this review focuses on the most recent developments in bioremediation techniques, the mechanisms by which microorganisms degrade various pollutants, and the possible uses of bioremediation as a worldwide pollution mitigation strategy.

25. Chapter 24. Microalgae Based Dye Remediation: A Sustainable Approach to Dye Abatement

    V. L. Vibash Kalyaan, S. Gopinath, M. Kamaraj

    Abstract

    One potential answer to the urgent environmental problem of effluents tainted with dyes is wastewater treatment using microalgae. This article delves deep into the possibilities of microalgae for dye remediation, highlighting their capacity to extract pollutants and produce beneficial biomass. Controlling factors including temperature, light intensity, pH, and dissolved oxygen levels are crucial for maximizing growth and pollutant uptake. It is critical to choose microalgae species that can adapt to different types of wastewater and tolerate dye components. Photobioreactors and harvesting technology are examples of equipment that can affect the feasibility of such systems. Also, microalgal biomass quality varies, which impacts its potential for downstream uses. Because of its complicated chemistry and possible toxicity, industrial dye effluent poses significant issues. There are a number of different harvesting procedures to choose from, and each has its own set of advantages and challenges that make things more complicated. Optimizing growth conditions for microalgae is still a challenging process, but there are possible opportunities for improvement through genetic engineering and biotechnological approaches. A crucial part of long-term environmental management plans might be microalgae-based wastewater treatment, which could be achieved through persistent research and development, and creative solutions.

26. Chapter 25. Mathematical Modelling to Control the Spread of Water Contamination of Uppanar River in Cuddalore District

    H. A. Bhavithra, N. Kiruthika, S. Sindu Devi

    Abstract

    Water pollution stands out as a significant environmental challenge confronting developing nations worldwide. The formulation of a mathematical model addressing both soluble and insoluble water pollutants revolves around ordinary differential equations. Through sensitivity analysis, an exploration of parameter values linked to the reproduction number is conducted, aiming to mitigate water pollution. The determination of the basic reproduction number for the water pollution model and an investigation into the model’s steady state are carried out. Numerical analysis underscores the pivotal role of water treatment in securing high-quality water for human consumption.

27. Chapter 26. A Review on AI Technologies for Air Toxic Waste and Human Health Prediction

    V. Gowthami, H. A. Bhavithra

    Abstract

    Since air toxic waste affects both the atmosphere and people, it is a serious problem on a worldwide scale. This effort grants a thorough conversation of the AI approaches and ML algorithms used in ecological toxic waste predicting and early-cautionary schemes. Moreover, the current effort highlights additional on AI methods used for predicting numerous main toxins in part. Further attention is specified to both AI and ML methods in foreseeing long-lasting air network infections and the estimate of weather variations and temperature surfs. The bases and effects of toxins on the atmosphere and human health were enclosed in aspect, as well as the current research status on ecological toxic waste predicting methods. Related to particular AI models, the composite model makes improved and proposals developed prediction and cautionary system precision. This study absorbed on routine estimate fault guides such as R2, RMSE, MAE, and MAPE, assessing the efficiency of several AI models.

28. Chapter 27. Systematic Review on Role of Microorganisms in Bioremediation

    Gopi Devarajan, Suganya Ilango, Aishwarya Vetrivel, T. G. Nithya

    Abstract

    Worldwide, environmental contamination and its remediation are major problems. Heavy metals, dyes, hydrocarbons, pesticides, and other pollutants are some of the main causes of environmental deterioration. Eliminating residual contaminants is also one of the toughest challenges. Since bioremediation restores the damaged site to its previous state, it is one of the most successful methods for lowering environmental toxins. Through the action of bacteria, fungus, and plants, it degrades, removes, alters, immobilizes, or detoxifies numerous chemicals and physical wastes from the environment. Microorganisms’ natural biodegradation of complex organic compounds implies that they can be reduced to more basic inorganic forms. Bioremediation, is a technology developed by humans that employs microorganisms to reduce pollutants, methods such as bioaugmentation, biostimulation, bioventing, and bio attenuation are some of the types of bioremediation used to increase the capacity of microorganisms to degrade pollutants. These organisms will use the pollutants as a source of energy. Using symbiotic microorganisms, genetically engineered microorganisms have been used to improve pollutant cleanup and ensure safe biodegradation. Hence, this review focuses on the most recent developments in bioremediation techniques, the mechanisms by which microorganisms degrade various pollutants, and the possible uses of bioremediation as a worldwide pollution mitigation strategy.