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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Hydrogen bioproduction with anaerobic bacteria consortium from brewery wastewater

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Pachiega, Renan [1, 2] ; Rodrigues, Mayara Franco [2] ; Rodrigues, Caroline Varella [1, 2] ; Sakamoto, Isabel Kimiko [3] ; Varesche, Maria Bernadete A. [3] ; De Oliveira, Jose Eduardo [1, 4] ; Maintinguer, Sandra Imaculada [1, 5]
Total Authors: 7
[1] UNESP, Bioenergy Res Inst IPBEN, BR-13550230 Rio Claro, SP - Brazil
[2] UNESP, Inst Chem IQ, Prof Francisco Degni 55, BR-14801970 Araraquara, SP - Brazil
[3] Univ Sao Paulo, Sch Engn Sao Carlos, Dept Hydraul & Sanitat, Ave Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil
[4] UNESP, Inst Chem CEMPEQC, Ctr Monitoring & Res Qual Fuels Biofuels Crude Oi, Prof Francisco Degni 55, BR-14801970 Araraquara, SP - Brazil
[5] Univ Araraquara, R Voluntarios Patria 1309, BR-14801320 Araraquara, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 44, n. 1, SI, p. 155-163, JAN 1 2019.
Web of Science Citations: 5

Biohydrogen production is a cheap and clean way to obtain hydrogen gas. In subtropical countries such as Brazil the average temperatures of 27 degrees C can favor the hydrogen producing bacteria growth. A mixed culture was obtained from a subtropical sludge treating brewery wastewater and anaerobic batch reactors were fed with glucose, sucrose, fructose and xylose in low concentrations (2.0, 5.0 and 10.0 g L-1) at 37 degrees C, initial pH 5.5 and headspace with N-2 (99%) to maintain the anaerobic conditions. The inoculum was a subtropical granulated sludge from UASB (Upflow Anaerobic Sludge Blanket) reactor treating brewery wastewater. The higher H-2 yields were obtained in reactors operated with 2 and 5 g L-1 of fructose and they were 1.5 mol H-2 marl of fructose and 1.3 mol H-2 mol(-1) of sucrose, respectively. The volatile fatty acids (VFA) generated at the end of operation were, predominantly, butyric and acetic acid, indicating the favoring of the metabolic route of hydrogen generation by the consortium of anaerobic bacteria from the brewery wastewater. Biomolecular analyses revealed the predominance of hydrogen producing bacteria from Firmicutes phylum distributed in the families Streptococcaceae, Veillonellaceae and uncultured bacteria. These results confirm future applications of subtropical sludges with agroindustrial wastewaters containing low concentrations of sugars on hydrogen generation. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 17/11767-1 - AEM 2017 - 3th International Conference on Hydrogen
Grantee:Sandra Imaculada Maintinguer
Support type: Research Grants - Meeting - Abroad
FAPESP's process: 13/03815-5 - Hydrogen bio-production to low concentrations of fructose and glucose
Grantee:Mayara Franco Rodrigues
Support type: Scholarships in Brazil - Scientific Initiation