TITLE

Toxicity of pH, Ammonia and Volatile Fatty Acids on Hydrogenotrophic Methanogen-Enriched Sludge

AUTHOR(S)
Jianzheng Li; Yupeng Zhang; Chong Liu; Zeyu Tang
PUB. DATE
July 2014
SOURCE
Advanced Materials Research;2014, Vol. 955-959, p527
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The activities of methanogen are easily affected by inhibitory substances and lead to anaerobic digestion failure. To investigate inhibitory effects on methanogenesis of a methanogen-enriched sludge, pH, volatile fatty acids (such as acetic acid, propionic acid and butyric acid), and ammonia were used as inhibitory factors and a L16(45) orthogonal table was employed to design batch experiments. The result of variance analyses shows that pH has the greatest impact on the methanogenesis of the enriched culture. The impact of butyrate, NH3, acetate and propionate was decreased in order. DGGE finger-print shows that there was only one methanogen in the inoculum sludge.
ACCESSION #
99557115

 

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