The effect of propionic acid accumulation on methane production in dry mesophilic anaerobic fermentation
نویسندگان
چکیده
Abstract The dry anaerobic digestion performances were investigated at the temperature of 35±1°Cwith addition propionic acid different concentrations in five lab-scale reactors (R1-R5) to investigate effect accumulation on methane production mesophilic digestion. And volatile fatty acids, biogas and microbial community detected. active generation would be inhibited when exceeded 30 gL 1 , which affected not only syntrophic propionate-oxidizing bacteria but also acetate-utilizing methanogens. Eubacteria decreased sharply accompany with higher concentration R4 R5. relative abundance acetoclastic methanogens was directly correlated solids removals reactors. Otherwise, quantity positively linear below . methanogenic activity R3 best yield 27.01 mLCH 4 g -1 VS d results suggested that appropriate propionate could enhance fermentation.
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ژورنال
عنوان ژورنال: IOP conference series
سال: 2021
ISSN: ['1757-899X', '1757-8981']
DOI: https://doi.org/10.1088/1755-1315/675/1/012208