Enhanced treatment of wastewater from the vitamin C biosynthesis industry using a UASB reactor supplemented with zero-valent iron

doi:10.1080/09593330.2011.566583

	Enhanced treatment of wastewater from the vitamin C biosynthesis industry using a UASB reactor supplemented with zero-valent iron
	Shi, Rongjiu; Xu, Hui; Zhang, Ying
刊名	ENVIRONMENTAL TECHNOLOGY
	2011
卷号	32 期号:16 页码:1859-1865
关键词	Zero-valent Iron Uasb High-strength Wastewater Vitamin c Biosynthesis Industry Methanogenesis
ISSN号	0959-3330
DOI	10.1080/09593330.2011.566583
英文摘要	The effects of zero-valent iron (Fe-0) on the performance of a mesophilic upflow anaerobic sludge blanket (UASB) reactor treating high-strength wastewater from the vitamin C biosynthesis industry (VCW) was investigated during a 200-day period. The results showed that the chemical oxygen demand (COD) removal efficiency, CH4 content in biogas, specific methanogenic activity of sludge, and phosphate removal efficiency were significantly improved up to 81.8-96.1%, 76.5-79.6%, 1.71-2.87 g CH4-COD g(-1) VSS d(-1) and 68.5-85.2%, respectively, at elevated organic loading rates (OLRs) in the Fe-0-amended reactor (R-Fe). In contrast, the corresponding values of 65.3-83.4%, 69.1-70.8%, 1.12-1.95 g CH4-COD g(-1) VSS d(-1) and 1.4-1.6%, respectively, were recorded in the control (R-0). Elevated ferrous concentration of nearly 400 mg L-1 in sludge was detected in R-Fe, whereas in the effluent of both reactors it was low (<1.0 mg L-1). Batch tests further showed that Fe-0 significantly enhanced the biodegradability of the VCW as shown by an increase in BOD/COD ratio from 0.41 to 0.65, and could serve as the electron donor for methanogenesis by anaerobic sludge, which were responsible for the differences between R-Fe and R-0. The results suggest this integrated Fe-0-microbial system is promising in facilitating the anaerobic digestion of VCW in UASB reactors.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000300178500004
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/121999]
专题	中国科学院沈阳应用生态研究所
通讯作者	Shi, Rongjiu
作者单位	Chinese Acad Sci, Inst Appl Ecol, Key Lab Pollut Ecol & Environm Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Shi, Rongjiu,Xu, Hui,Zhang, Ying. Enhanced treatment of wastewater from the vitamin C biosynthesis industry using a UASB reactor supplemented with zero-valent iron[J]. ENVIRONMENTAL TECHNOLOGY,2011,32(16):1859-1865.
APA	Shi, Rongjiu,Xu, Hui,&Zhang, Ying.(2011).Enhanced treatment of wastewater from the vitamin C biosynthesis industry using a UASB reactor supplemented with zero-valent iron.ENVIRONMENTAL TECHNOLOGY,32(16),1859-1865.
MLA	Shi, Rongjiu,et al."Enhanced treatment of wastewater from the vitamin C biosynthesis industry using a UASB reactor supplemented with zero-valent iron".ENVIRONMENTAL TECHNOLOGY 32.16(2011):1859-1865.