Fermentative production of hydrogen from cassava processing wastewater by Clostridium acetobutylicum

详细信息    查看全文

• 作者：Bianca Martins Cappelletti^a ; Valeria Reginatto^b ; ^{valeriars@ffclrp.usp.br"" rel=""nofollow} ; Edna Regina Amante^a ; ^c ; Regina Vasconcellos Antô ; nio^a ; ^d
• 关键词：Biohydrogen ; Fermentation ; Wastewater ; Cassava ; Clostridium acetobutylicum
• 刊名：Renewable Energy
• 出版年：2011
• 出版时间：December 2011
• 年：2011
• 卷：36
• 期：12
• 页码：3367-3372
• 全文大小：316 K

文摘

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.