文献类型： 会议论文

第一作者： Prawat SUKPHUN

作者： Prawat SUKPHUN ¹ ; Worapong WONGARMAT ² ; Alissara REUNGSANG ³ ;

作者机构： 1.Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand

2.Research Group for Development of Microbial Hydrogen Production Process from Biomass, Khon Kaen University, Khom Kaen, 40002, Thailand

3.Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand##Research Group for Development of Microbial Hydrogen Production Process from Biomass, Khon Kaen University, Khom Kaen, 40002, Thailand##Academic of Science, Royal Society of Thailand, Bangkok, 10300, Thailand

会议名称： Water and Environment Technology Conference

主办单位：

页码： 54-54

摘要： The present work focuses on scaling up bench to pilot-plant scale for a two-stage anaerobic digestion (TSAD) of hydrothermally treated mixed Napier grass and microalgae. The operating conditions were optimized under batch and semi-continuous digesters at laboratory scale. The optimal conditions demonstrated in the batch reactor were a substrateto- inoculum ratio of 6:1 and an initial substrate concentration of 3% w/v (based on volatile solids). The results illustrated that total energy recovery from hydrothermally treated mixture was higher than that without treatment by 36.9%. The optimum hydraulic retention time (HRT) of TSAD was investigated in semi-continuous reactors. The highest H_2 and CH_4 production rates of 0.13 L-H_2/Ld and 63.46 L-CH_4/Ld were achieved at an HRT of 2.6 and 25 days, respectively. The optimal conditions for digester operation were selected for process scale-up to 0.4 and 4.0 m~3 digesters. The pilot-scale TSAD successfully yielded an average biohythane production rate of 2095.8 L-biohythane/d, consisting of 1.9% H_2, 54.2% CH_4, 35.3% CO_2, and 8.6% other gases. These findings show that pilot plant-scale TSAD is a robust platform to fulfill renewable energy demand. However, biogas upgrading technology is one of the most critical needs before being injected into the natural gas network.

分类号： x5