Biosorption of Synthetic Dye by Waste Derived Sorbent: Preparation, Characterization, and Kinetic Isotherm Study

With contaminants including organic and inorganic substances introduced into aquatic ecosystems on a daily basis, water contamination poses a major risk to human health as well as the environment. Water contamination can be effectively removed through symbiotic action of biodegradation and adsorption which are more well-liked inexpensive, and sustainable techniques. In our present study, we perfected the use of green adsorbents such as Gelatine and powdered biochar from waste for removing two inorganic dyes from wastewater samples. The characterization of green adsorbents like the surface morphology, and physic-chemical compositions were performed using FTIR and XRD. The two synthetic dyes used in the adsorption kinetics and equilibrium investigation were methylene blue (MB) and methylene red (MR). By altering the reaction time and pollutant concentration, the equilibrium kinetics investigation was carried out, and it was discovered that the equilibrium time for MB and MR was greater than 180 min. Orange peel waste derived biochar was shown to have a maximal adsorption capacity of 0.0367 mg/g for MB and 0.0399 mg/g for MR. An isotherm study was also conducted for the acquired results using Langmuir and Freundlich models. While Gelatine can dissolve fully, we conclude that powdered biochar had an effective clearance rate of over 65% for colors. In conclusion, green sorbents are effective for usage in industrial wastewater treatment plants and other emerging pollutants removal. Additionally, studies might look into various green sorbents and how well they work on a pilot size to remove contaminants from water samples.