Formation and characteristics of a ternary pH buffer system for in-situ biogas upgrading in two-phase anaerobic membrane bioreactor treating starch wastewater

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	Formation and characteristics of a ternary pH buffer system for in-situ biogas upgrading in two-phase anaerobic membrane bioreactor treating starch wastewater
	Yu, Dawei; Meng, Xiaoshan; Liu, Jibao; Dian, Liu; Sui, Qianwen; Zhang, Junya; Zhong, Hui; Wei, Yuansong
刊名	BIORESOURCE TECHNOLOGY
	2018-01-12
卷号	269 页码:57-66
关键词	Anaerobic membrane bioreactor pH Carbonate system Ammonia Volatile fatty acids
ISSN号	0960-8524
文献子类	Article
英文摘要	Biochemical biogas upgrading retaining more CO2 from biogas to form biomethane opens new avenues for sustainable biofuel production. For developing this technology, maintaining sustain pH for CO2 center dot H2O is fundamental. This study proposes an innovative control strategy for in-situ biogas upgrading retaining and converting the CO2 in the biogas into CH4, via hydrogenotrophic methanogenesis without external agent. The Biogas-pH strategy limited pH drop over 7.4 by stop feeding and maintained the methanogenesis activity by biogas flow rate over 98 ml.h(-1). Low pH (7.37-7.80) decrease CO2 center dot H2O as a substrate in stage-I, higher pH (7.40-8.41) enhances CO2 to CO2 center dot H2O transfer by 6.29 +/- 2.20% in stage-II. Because of that 95% CO2 center dot H2O converts to HCO3- and CO32- when pH > 7.9, higher pH > 7.9 did not further upgrading the biogas. The carbonate buffer system shown open and close system characteristics in gas and liquid phase. The biogas CH4 was upgraded from 67.27 +/- 5.21% to 73.56 +/- 5.01%.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/40814]
专题	生态环境研究中心_大气污染控制中心
推荐引用方式 GB/T 7714	Yu, Dawei,Meng, Xiaoshan,Liu, Jibao,et al. Formation and characteristics of a ternary pH buffer system for in-situ biogas upgrading in two-phase anaerobic membrane bioreactor treating starch wastewater[J]. BIORESOURCE TECHNOLOGY,2018,269:57-66.
APA	Yu, Dawei.,Meng, Xiaoshan.,Liu, Jibao.,Dian, Liu.,Sui, Qianwen.,...&Wei, Yuansong.(2018).Formation and characteristics of a ternary pH buffer system for in-situ biogas upgrading in two-phase anaerobic membrane bioreactor treating starch wastewater.BIORESOURCE TECHNOLOGY,269,57-66.
MLA	Yu, Dawei,et al."Formation and characteristics of a ternary pH buffer system for in-situ biogas upgrading in two-phase anaerobic membrane bioreactor treating starch wastewater".BIORESOURCE TECHNOLOGY 269(2018):57-66.