Coupled Sulfur and Iron(II) Carbonate-Driven Autotrophic Denitrification for Significantly Enhanced Nitrate Removal

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Coupled Sulfur and Iron(II) Carbonate-Driven Autotrophic Denitrification for Significantly Enhanced Nitrate Removal
	Zhu, Ting-ting ; Cheng, Hao-yi ; Yang, Li-hui ; Su, Shi-gang ; Wang, Hong-cheng ; Wang, Shu-sen ; Wang, Ai-jie
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2019-02-05
卷号	53 期号:3 页码:1545-1554
ISSN号	0013-936X
英文摘要	Sulfur-based denitrification process has attracted increasing attentions because it does not rely on the external addition of organics and avoids the risk of COD exceeding the limit. Traditionally, limestone is commonly employed to maintain a neutral condition (SLAD process), but it may reduce the efficiency as the occupied zone by limestone cannot directly contribute to the denitrification. In this study, we propose a novel sulfur-based denitrification process by coupling with iron(II) carbonate ore (SICAD system). The ore was demonstrated to play roles as the buffer agent and additional electron donor. Moreover, the acid produced through sulfur driven denitrification was found to promote the Fe(II) leaching from the ore and likely extend the reaction zone from the surface to the liquid. As a result, more biomass was accumulated in the SICAD system compared with the controls (sulfur, iron(II) carbonate ore and SLAD systems). Owing to these synergistic effects of sulfur and iron(II) carbonate on denitrification, SICAD system showed much higher denitrification rate (up to 720.35 g.N/m(3).d) and less accumulation of intermediates (NO2- and N2O) than the controls. Additionally, sulfate production in SICAD system was reduced. These findings offer great potential of SICAD system for practical use as a highly efficient postdenitrification process.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43348]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Ting-ting,Cheng, Hao-yi,Yang, Li-hui,et al. Coupled Sulfur and Iron(II) Carbonate-Driven Autotrophic Denitrification for Significantly Enhanced Nitrate Removal[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2019,53(3):1545-1554.
APA	Zhu, Ting-ting.,Cheng, Hao-yi.,Yang, Li-hui.,Su, Shi-gang.,Wang, Hong-cheng.,...&Wang, Ai-jie.(2019).Coupled Sulfur and Iron(II) Carbonate-Driven Autotrophic Denitrification for Significantly Enhanced Nitrate Removal.ENVIRONMENTAL SCIENCE & TECHNOLOGY,53(3),1545-1554.
MLA	Zhu, Ting-ting,et al."Coupled Sulfur and Iron(II) Carbonate-Driven Autotrophic Denitrification for Significantly Enhanced Nitrate Removal".ENVIRONMENTAL SCIENCE & TECHNOLOGY 53.3(2019):1545-1554.