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Acclimatization of a microbial consortium into a stable biofilm to produce energy and 1,3-propanediol from glycerol in a microbial fuel cell

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Author(s):
Halfeld, Gisele Giovanna ; Rodrigues de Almeida, Erica Janaina ; Reginatto, Valeria ; de Andrade, Adalgisa Rodrigues
Total Authors: 4
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 47, n. 49, p. 12-pg., 2022-06-08.
Abstract

Glycerol, a by-product of biodiesel production, is a potential substrate for producing electricity and value-added products in bioelectrochemical systems. Here, we demonstrate a strategy to establish a highly specific energy-producing biofilm from glycerol in a microbial fuel cell (MFC). The MFC fed with 1 g L-1 glycerol achieved maximum voltage, power density, and current of 0.4 V, 152 mW m-2, and 19.0 mA m-2, respectively, operating at a resistance of 1000 U. These values were much higher than the values previously described for the same glycerol concentration. High-throughput sequencing demonstrated that substituting acetate for glycerol diminished the anodic microbial diversity. In addition, glycerol shifted the microbial community composition from electroactive bacteria genera such as Delftia, Advenella, Thauera, Stenotrophomonas, and Dysgonomonas to bacteria with dual (AU)

FAPESP's process: 18/05454-3 - Treatment of dyes in photo-consortium processes with power generation in microbial biocells
Grantee:Érica Janaina Rodrigues de Almeida
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 21/01134-7 - Electrochemical valorization of glyceol molecule: development of a microbial electrolytic cell (MEC) to produce bio-hydrogen (Bio-H2) and value add products in a pem fuel cell
Grantee:Adalgisa Rodrigues de Andrade
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 18/12471-1 - Sustainable bio-based 1,3-propanediol production from C5/C3 sources by metabolically engineered clostridia
Grantee:Valeria Reginatto Spiller
Support Opportunities: Regular Research Grants