Biochemical methane potential (BMP) of food waste and primary sludge: Influence of inoculum pre-incubation and inoculum source

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• 作者：Elsayed Elbeshbishy^a ; George Nakhla^a ; ^{gnakhla@eng.uwo.ca} ; ^{gnakhla@fes.engga.uwo.ca} ; Hisham Hafez^b
• 关键词：BMP ; biochemical methane potential ; COD ; chemical oxygen demand ; CV ; coefficient of variation ; DOPF ; Dufferin Organics Processing Facility ; HRT ; hydraulic retention time ; JWPCP ; Joint Water Pollution Control Plant ; MMPR ; maximum methane production rate ; M
• 刊名：Bioresource Technology
• 出版年：2012
• 期刊代码：11_09608524
• 类别：ce
• 出版时间：April, 2012
• 卷：110
• 期：Complete
• 页码：18-25
• 文件大小：974 K

摘要

Biochemical methane potential tests were conducted to evaluate the effect of using a blank versus a pre-incubated inoculum in digestion of primary sludge at different waste to inoculum ratios (S/X). In addition, this study explored the influence of using two different anaerobic inoculum sources on the digestion of food waste: digested sludge from a municipal wastewater treatment plant and from a digester treating the organic fraction of municipal solid wastes. The results revealed that although there was no significant difference in methane yield (on average 114 mL CH₄/g TCOD_sub) or biodegradability (on average 28.3%) of primary sludge using pre-incubated or non-incubated inocula, the maximum methane production rates using non-incubated inoculum were higher than those using pre-incubated inoculum at all S/X ratios. Moreover, interestingly the inoculum from an anaerobic digester treating municipal wastewater sludge was superior over the inoculum from anaerobic digester treating food waste in digesting food waste.