Effects of Pretreatment on Anaerobic Digestion of Biological Sludges
Date Issued
2006
Date
2006
Author(s)
Jan, Tsai-Wuu
DOI
zh-TW
Abstract
The aim of this thesis is intended to investigate the influence of pretreatment on sludge digestion. Microbial inoculums, sterilization, frozen/thawed, acidification, and alkalization are used to pretreat the sludge. The microbial inoculum is clostridium inoculums. In our experiment, we used the HPLC and microbial community analysis (PCR-DGGE) to monitor the digestion pathway and the microbial population change. The major metabolite detected by HPLC are volatile fatty acids (VFA) and lactic acid. The main tracked bacteria in microbial community analysis are acetogens and methanogens, like Clostridium spp.、Methanobacterium spp.. The results show that the pretreatment of Microbial inoculums can substantially increases digestion rate and methane product. However, the sludge treated by adding Clostridium inoculums combined with other pretreatmentis aren't clearly better than only by Clostridium inoculums.
Subjects
污泥消化
產甲烷菌
梭狀芽孢桿菌群
揮發酸
sludge digestion
methanogens
Clostridium spp.
volatile fatty acids (VFA)
Type
thesis
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