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Chemical and Biochemical Engineering Quarterly, Vol. 34 No. 4, 2020.

Original scientific paper

https://doi.org/10.15255/CABEQ.2020.1857

Vicia faba Crop Residues for Sustainable Electricity Generation Using a Sludge-based Microbial Fuel Cell

L. J. Mamani-Asqui ; Academic Department of Chemical Engineering, Universidad Nacional de San Agustín de Arequipa, Arequipa 0401, Perú
L. N. Peredo-Berlanga orcid id orcid.org/0000-0002-7956-0494 ; Academic Department of Chemical Engineering, Universidad Nacional de San Agustín de Arequipa, Arequipa 0401, Perú
F. J. Roque Rodríguez orcid id orcid.org/0000-0002-7579-834X ; a)Academic Department of Chemical Engineering, Universidad Nacional de San Agustín de Arequipa, Arequipa 0401, Perú; b)Postgraduate Unit of the Faculty of Process Engineering, Universidad Nacional de San Agustín de Arequipa, Arequipa 0401, Perú
G. R. Salazar-Banda orcid id orcid.org/0000-0002-3252-1746 ; c)Electrochemistry and Nanotechnology Laboratory, Institute of Technology and Research (ITP), 49032-490, Aracaju-SE, Brazil; d)Graduate Program in Process Engineering (PEP), Universidade Tiradentes, 49032-490, Aracaju-SE, Brazil

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Abstract

Microbial fuel cells (MFC) simultaneously degrade organic substrates and generate electricity in a sustainable and eco-friendly way. Here, we built a 4-unit MFC and studied the efficiency of MFC at different conditions, including pH, substrate concentration of Vicia faba agricultural wastes with exoelectrogenic bacteria P. aeruginosa. The exoelectrogenic bacteria were obtained from industrial effluents and used to inoculate the MFCs. The optimized conditions in terms of yielding maximum potential of 802 mV, yielding maximum power density of 283 mW m–2 were reported at a substrate concentration of 6 g L–1 of V. faba waste and pH of 5.5, corresponding to a current density 1255.93 mA m–2. Using exoelectrogenic bacteria from industrial effluents and agricultural wastes resulted in efficient MFC. Thus, the developed MFCs using V. faba agricultural wastes can be used in rural areas that have limited access to electricity, by reusing agricultural wastes and concomitant electricity generation.







This work is licensed under a Creative Commons Attribution 4.0 International License.

Keywords

V. faba agricultural wastes; P. aeruginosa; microbial fuel cell

Hrčak ID:

251485

URI

https://hrcak.srce.hr/251485

Publication date:

3.2.2021.

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