Abstract:Organic liquid waste from food production industry is inevitable. High chemical oxygen demand (COD) contents in organic liquid waste could disrupt the water ecosystem. On the other hand, COD contents can be reduced and utilized to produce biogas by UASB reactor. However, there is a problem in operating UASB reactor, namely the high biomass content in methanogenic granule form, which is washed out with the effluent. The influent flow rate affects biomass content and the suitable flow rate is important for the p… Show more
“…This was because an increase in pH in the range of 6.3–7.8 increase methanogenesis [ 35 , 36 ]. The plot also showed that at pH 7, the % removal of COD was seen to be maximum at a temperature of 24.5 °C beyond this pH the % removal of COD was decreased this is because methanogenesis process is hindered [ 37 , 38 ]. …”
“…This was because an increase in pH in the range of 6.3–7.8 increase methanogenesis [ 35 , 36 ]. The plot also showed that at pH 7, the % removal of COD was seen to be maximum at a temperature of 24.5 °C beyond this pH the % removal of COD was decreased this is because methanogenesis process is hindered [ 37 , 38 ]. …”
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