Fermentative production of hydrogen from cassava processing wastewater by Clostridium acetobutylicum

Bianca Martins Cappelletti, Valeria Reginatto, Edna Regina Amante and Regina Vasconcellos Antônio

Renewable Energy, 2011, vol. 36, issue 12, 3367-3372

Abstract: This work reports on the effect of initial substrate concentration on COD consumption, pH, and H2 production during cassava processing wastewater fermentation by Clostridium acetobutylicum ATCC 824. Five initial COD wastewater concentrations, namely 5.0, 7.5, 10.7, 15.0, and 30.0 g/L, were used. The results showed that higher substrate concentrations (30.0 and 15.0 COD/L) led to lower H2 yield as well as less efficient substrate conversion into H2. On the other hand, initial COD concentrations of 10.7, 7.5 and 5 g/L furnished 1.34, 1.2 and 2.41 mol H2/mol glucose, with efficiency of glucose conversion into H2 of 34, 30, and 60% (mol/mol), respectively. These results demonstrate that cassava processing wastewater, a highly polluting effluent, can be successfully employed as substrate for H2 production by C. acetobutylicum at lower COD concentrations.

Keywords: Biohydrogen; Fermentation; Wastewater; Cassava; Clostridium acetobutylicum (search for similar items in EconPapers)
Date: 2011
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148111002412
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:36:y:2011:i:12:p:3367-3372

DOI: 10.1016/j.renene.2011.05.015

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().