Recovery of unstable digestion of vegetable waste by adding trace elements using the bicarbonate alkalinity to total alkalinity ratio as an early warning indicator

doi:10.1007/s10532-019-09868-9

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 食品安全与环境治理领域 > 应用与环境微生物研究

	Recovery of unstable digestion of vegetable waste by adding trace elements using the bicarbonate alkalinity to total alkalinity ratio as an early warning indicator
	Li, Dong 1,2; Sun, Juan 1; Cao, Qin 1; Chen, Yichao 1; Liu, Xiaofeng 1; Ran, Yi 2
刊名	BIODEGRADATION
	2019
卷号	30 期号:1 页码:87-100
关键词	Vegetable waste Anaerobic digestion Organic loading rate Early warning Trace element Recovery of unstable digestion
ISSN号	0923-9820
DOI	10.1007/s10532-019-09868-9
产权排序	1
文献子类	Article
英文摘要	Vegetable waste (VW) is highly perishable and susceptible to acidification during anaerobic digestion, which inhibits biogas production. Effective process monitoring, diagnosis and control are necessary to maintain stable anaerobic digestion at a high organic loading rate (OLR). Continuous mesophilic digestion was conducted at OLRs of 0.5, 1.0, 1.5, 2.0, 3.0, 3.5 and 4.0g volatile solids (VS)/(Ld) with effluent recirculation (ER) in a reactor with total volume of 70L. The effectiveness of three early warning indicators was validated. The ability of trace elements (TEs) (Fe, Co and Ni) to recover unstable VW digestion systems was evaluated. The results showed that the ratio of bicarbonate alkalinity (BA) to total alkalinity (TA) was a more effective warning indicator than the ratios of methane (CH4) to carbon dioxide and volatile fatty acids (VFAs) to TA. When the ratio of BA/TA was lower than 0.9, the digestion system tended to be unstable. ER maintained a stable OLR of 1.5g VS/(Ld). The addition of TEs achieved a maximum stable OLR of 3.5g VS/(Ld) with an average volumetric biogas production rate of 1.91 L/(Ld). Severe VFAs accumulation and unrecoverable instability occurred at an OLR of 4.0g VS/(Ld). The supplementation of ammonium bicarbonate was not useful for the recovery of the unstable system when the OLR was greater than 3.5g VS/(Ld) for the digestion of VW. The specific methane production was approximately 340 L/kg VS during the stable period with a digestion efficiency of 85%.
学科主题	Biotechnology & Applied Microbiology
URL标识	查看原文
WOS关键词	ANAEROBIC CO-DIGESTION ; FOOD WASTE ; FRUIT ; PERFORMANCE ; SUPPLEMENTATION ; IMPROVEMENT ; STABILITY ; PATHWAY
WOS研究方向	Biotechnology & Applied Microbiology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000459147900008
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/30544]
专题	环境治理与食品安全领域_应用与环境微生物研究
作者单位	1.Chinese Acad Sci, Chengdu Inst Biol, Environm Microbiol Key Lab Sichuan Prov, Key Lab Environm & Appl Microbiol, Chengdu 610041, Sichuan, Peoples R China; 2.Minist Agr, Biogas Inst, 13 Sect 4,Renmin Nan Rd, Chengdu 610041, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Li, Dong,Sun, Juan,Cao, Qin,et al. Recovery of unstable digestion of vegetable waste by adding trace elements using the bicarbonate alkalinity to total alkalinity ratio as an early warning indicator[J]. BIODEGRADATION,2019,30(1):87-100.
APA	Li, Dong,Sun, Juan,Cao, Qin,Chen, Yichao,Liu, Xiaofeng,&Ran, Yi.(2019).Recovery of unstable digestion of vegetable waste by adding trace elements using the bicarbonate alkalinity to total alkalinity ratio as an early warning indicator.BIODEGRADATION,30(1),87-100.
MLA	Li, Dong,et al."Recovery of unstable digestion of vegetable waste by adding trace elements using the bicarbonate alkalinity to total alkalinity ratio as an early warning indicator".BIODEGRADATION 30.1(2019):87-100.