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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 and organic acid production from dark fermentation of cheese whey without buffers under mesophilic condition

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Ribeiro, Jaqueline Cardoso [1] ; Mota, Vera Taina [2] ; de Oliveira, Valeria Maia [2] ; Zaiat, Marcelo [1]
Total Authors: 4
[1] Univ Sao Paulo LPB EESC USP, Sao Carlos Sch Engn, Biol Proc Lab, Joao Dagnone Ave 1100, BR-13563120 Sao Carlos, SP - Brazil
[2] State Univ Campinas CPQBA Unicamp, Multidisciplinary Ctr Chem Biol & Agr Res, Microbial Resources Div, Alexandre Cazelatto Ave 999, BR-13148218 Paulinia, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Environmental Management; v. 304, FEB 15 2022.
Web of Science Citations: 0

BioH(2) production from cheese whey (CW) was evaluated in two acidogenic reactors, UASB and structured fixed-bed (FB), without pH adjustment, under mesophilic conditions, and OLR of 25-90 g COD/L.d. Stage 1 was conducted as a control experiment using sucrose. BioH(2) production occurred under pH < 3.0 with maximum yields of 5.8 and 3.0 mol H-2/mol sucrose(consumed) for UASB and FB reactors, respectively. In Stage 2, CW was the only substrate and a negligible bioH(2) production was observed. Nevertheless, a maximum lactic acid concentration of 9.6 g/L was obtained, indicating that pH adjustment can be non-essential for lactic acid production from CW. In Stage 3, a strategy to enrich hydrogenogenic biomass was conducted by initially feeding the reactors with sucrose and gradually replacing it by CW. This strategy brought better bioH(2) results compared to Stage 2, but it could not bear over the long-term, as non-hydrogen producing bacteria became predominant. (AU)

FAPESP's process: 17/06940-6 - Evaluation of acidogenic and methanogenic anaerobic reactors in the treatment of vinasse and whey without alkalination
Grantee:Jaqueline Cardoso Ribeiro
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 15/06246-7 - Biorefinery concept applied to biological wastewater treatment plants: environmental pollution control coupled with material and energy recovery
Grantee:Marcelo Zaiat
Support type: Research Projects - Thematic Grants
FAPESP's process: 18/25645-8 - Omics approaches in acidogenic reactors without alkalization for organic acid and hydrogen production
Grantee:Vera Tainá Franco Vidal Mota
Support type: Scholarships in Brazil - Post-Doctorate