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Erschienen in: Biomass Conversion and Biorefinery 7/2022

08.07.2020 | Original Article

A statistical approach to study the valorization process of spent coffee ground

verfasst von: Irma Robles, Fabricio Espejel-Ayala, Guillermo Velasco, Arely Cárdenas, Luis A. Godínez

Erschienen in: Biomass Conversion and Biorefinery | Ausgabe 7/2022

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Abstract

This study focused on identifying the best conditions and studying the effects of the operational variables on the integral valorization process of used coffee ground. The valorization approach was defined in two successive steps: oil extraction and using the remaining residue to prepare activated carbon. For this purpose, a set of experiments was designed to test the following four variables in the oil extraction stage: (A) drying time (50 °C/12 h and 105 °C/6 h), (B) relative polarity of hexane and ethanol (0.009 and 0.654 a.u.), (C) solvent ratio (10 and 12 mL/g), and (D) extraction time (30 and 60 min). The best conditions from the corresponding experiments (50 °C/12 h, using ethanol as a solvent in a 12:1 solvent ratio (v/v) with 30 min of extraction time) resulted in the extraction of 0.4 g of oil per gram of spent coffee ground. This value is, to the best of our knowledge, the highest reported thus far and is a result combining of the coffee origin and the significant interactions found for the tested parameters. For the stage of activated carbon preparation, the (E) activating agent ratio (1, 2, and 3 gAA/gS) and the (F) carbonization temperature (450, 550, and 700 °C) were considered independent variables. The corresponding results indicate that 1 gAA/gS and 450 °C are the best conditions, resulting in a sorption capacity of 29 mg/g, which is similar to the value obtained for commercial activated carbon. Physicochemical analysis on the other hand, showed that extracted coffee oil is characterized by a high content of free fatty acids; thus, an additional purification process could be considered to obtain a precursor for biodiesel. Activated carbon was found to have an elemental composition similar to that of vegetal activated carbon. The adsorption kinetics of the activated carbon obtained from the spent coffee residues are characterized by a pseudo-second-order model that suggests chemisorption-controlled phenomena.

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Literatur
4.
Zurück zum Zitat Cervera-Mata A, Navarro-Alarcón M, Delgado G, Pastoriza S, Montilla-Gómez J, Llopis J, Sánchez-González C, Rufián-Henares JÁ (2019) Spent coffee grounds improve the nutritional value in elements of lettuce (Lactuca sativa L.) and are an ecological alternative to inorganic fertilizers. Food Chem 282:1–8. https://doi.org/10.1016/j.foodchem.2018.12.101CrossRef Cervera-Mata A, Navarro-Alarcón M, Delgado G, Pastoriza S, Montilla-Gómez J, Llopis J, Sánchez-González C, Rufián-Henares JÁ (2019) Spent coffee grounds improve the nutritional value in elements of lettuce (Lactuca sativa L.) and are an ecological alternative to inorganic fertilizers. Food Chem 282:1–8. https://​doi.​org/​10.​1016/​j.​foodchem.​2018.​12.​101CrossRef
8.
Zurück zum Zitat Sanchez-Hernandez JC, Domínguez J (2017) Vermicompost derived from spent coffee grounds: assessing the potential for enzymatic bioremediation. In: Galanakis CM (ed) handbook of coffee processing by-products: sustainable applications. Academic press, pp 369–398 Sanchez-Hernandez JC, Domínguez J (2017) Vermicompost derived from spent coffee grounds: assessing the potential for enzymatic bioremediation. In: Galanakis CM (ed) handbook of coffee processing by-products: sustainable applications. Academic press, pp 369–398
15.
Zurück zum Zitat Bittner AM (2014) Electrospinning of biomolecules Wiwat Nuansing supervisor Bittner AM (2014) Electrospinning of biomolecules Wiwat Nuansing supervisor
34.
Zurück zum Zitat Reichardt C, Welton T (2014) Solvents and solvent effects in organic chemistry. Wiley-VCH, Fourth Edi Reichardt C, Welton T (2014) Solvents and solvent effects in organic chemistry. Wiley-VCH, Fourth Edi
39.
Zurück zum Zitat Ballesteros EA, Schellert C, de Almedia JA et al (2002) An alkali-catalyzed transesterification process for high free fatty acid waste oils. Am Soc Agric Biol Eng 45:525–529 Ballesteros EA, Schellert C, de Almedia JA et al (2002) An alkali-catalyzed transesterification process for high free fatty acid waste oils. Am Soc Agric Biol Eng 45:525–529
46.
48.
Zurück zum Zitat Alam S, Bangash S, Bangash FK (2009) Elemental analysis of activated carbon by EDS spectroscopy and X-ray diffraction. J Chem Soc Pak 31:46–58 Alam S, Bangash S, Bangash FK (2009) Elemental analysis of activated carbon by EDS spectroscopy and X-ray diffraction. J Chem Soc Pak 31:46–58
50.
Zurück zum Zitat Pretsch E, Bühlmann P, Badertscher M (2009) Structure determination of organic compounds: tables of spectral data. In: structure determination of organic compounds: tables of spectral data. Pp 1–433 Pretsch E, Bühlmann P, Badertscher M (2009) Structure determination of organic compounds: tables of spectral data. In: structure determination of organic compounds: tables of spectral data. Pp 1–433
55.
Zurück zum Zitat Cerino-Córdova FJ, Díaz-Flores PE, García-Reyes RB, Soto-Regalado E, Gómez-González R, Garza-González MT, Bustamante-Alcántara E (2013) Biosorption of cu(II) and Pb(II) from aqueous solutions by chemically modified spent coffee grains. Int J Environ Sci Technol 10:611–622. https://doi.org/10.1007/s13762-013-0198-zCrossRef Cerino-Córdova FJ, Díaz-Flores PE, García-Reyes RB, Soto-Regalado E, Gómez-González R, Garza-González MT, Bustamante-Alcántara E (2013) Biosorption of cu(II) and Pb(II) from aqueous solutions by chemically modified spent coffee grains. Int J Environ Sci Technol 10:611–622. https://​doi.​org/​10.​1007/​s13762-013-0198-zCrossRef
Metadaten
Titel
A statistical approach to study the valorization process of spent coffee ground
verfasst von
Irma Robles
Fabricio Espejel-Ayala
Guillermo Velasco
Arely Cárdenas
Luis A. Godínez
Publikationsdatum
08.07.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
Biomass Conversion and Biorefinery / Ausgabe 7/2022
Print ISSN: 2190-6815
Elektronische ISSN: 2190-6823
DOI
https://doi.org/10.1007/s13399-020-00854-3

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