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标题：Acidogenesis of Palm Oil Mill Effluent to Produce Biogas: Effect of Hydraulic Retention Time and pH
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作者：Bambang Trisakti ; Bambang Trisakti ; Veronica Manalu 等
期刊名称：Procedia - Social and Behavioral Sciences
印刷版ISSN：1877-0428
出版年度：2015
卷号：195
页码：2466-2474
DOI：10.1016/j.sbspro.2015.06.293
语种：English
出版社：Elsevier
摘要：Abstract Acidogenesis of palm oil mill effluent to produce biogas was conducted base on anaerobic digestion process. This process was consisted of four different stages using various types of microorganisms which came from various groups of bacteria. This research studied the effect of hydraulic retention time (HRT) and pH to the change of the organic compounds concentration and solids content of POME to the growth of microorganisms during acidogenesis stage. Initially, the suitable loading up was determined by varying the HRT 6.7; 5.0; and 4.0 days in the continuous stirred tank reactor (CSTR) with mixing rate 50rpm, pH 6.0 ± 0.2, and room temperature. Next, suitable pH was determined by varying the pH at 5.0; 5.5; and 6.0 with mixing rate 100-110rpm and temperature 55oC. Analysis of TS, VS, TSS, VSS, COD, and VFA were conducted in order to study the growth of microorganisms and their abilities in converting organic compound to produce VFA. The highest growth of microorganisms was achieved at HRT 4.0 day with microorganism concentration was 20.62mg VSS/L and COD reduction was 15.7%. The highest production of total VFA achieved was 5622.72mg/L at pH 6.0, with the concentration of acetic acid, propionic acid and butyric acid were 2257.34; 975.49; and 2389.90mg/L, respectively. While degradation VS and COD were 11 and 23%, respectively.
关键词：acidogenesis;anaerobic digestion;biogas;POME