Increasing ammonia recovery from high-level ammonium wastewater via adding sodium sulfate to prevent nitrogen generation in the cathode

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

	Increasing ammonia recovery from high-level ammonium wastewater via adding sodium sulfate to prevent nitrogen generation in the cathode
	Xu, Linji; Pang, Yunsong; Huang, Dezhao; Zhuang, Huichuan; Luo, Tengfei; Lee, Po-Heng; Liu, Wenzong; Zhang, Sheng; Feng, Li
刊名	ENVIRONMENTAL RESEARCH
	2020-07
卷号	186 页码:1-9
关键词	Sodium sulfate Ammonia recovery Reducing nitrogen gas Electric double layer Molecular dynamic simulation
ISSN号	0013-9351
英文摘要	The high-level ammonium-nitrogen (NH4+-N) is a contaminant for aqueous environment but a potential hydrogen fuel. This study investigated an approach of increasing ammonia recovery via adding sodium sulfate of 0-1.5 M to prevent from nitrogen generation. The results of experiment tests, electrochemical analysis and MD simulation demonstrated that the added Na2SO4 assisted ammonium transport inhibited nitrogen gas generation in a certain concentration range. In electric double layer (EDL), with Na2SO4 concentration increasing, both the migration velocities of NH4+ and Na+ are accelerated for Na2SO4 of 0-0.25 M, whereas they are decelerated for concentrate Na2SO4 that 0.5 M). A thick layer formed by Na+ that imposed a fierce competitive adsorption blocked the migration of NH4+ and the transportation of electrons. The decrease of electrons and the accumulation of water molecules caused the potential drop in the EDL. 0.25 M Na2SO4 was the optimal concentration from the aspect of ion transports. The results obtained in this study can allow the manipulation of EDI capacity optimization.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45173]
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
推荐引用方式 GB/T 7714	Xu, Linji,Pang, Yunsong,Huang, Dezhao,et al. Increasing ammonia recovery from high-level ammonium wastewater via adding sodium sulfate to prevent nitrogen generation in the cathode[J]. ENVIRONMENTAL RESEARCH,2020,186:1-9.
APA	Xu, Linji.,Pang, Yunsong.,Huang, Dezhao.,Zhuang, Huichuan.,Luo, Tengfei.,...&Feng, Li.(2020).Increasing ammonia recovery from high-level ammonium wastewater via adding sodium sulfate to prevent nitrogen generation in the cathode.ENVIRONMENTAL RESEARCH,186,1-9.
MLA	Xu, Linji,et al."Increasing ammonia recovery from high-level ammonium wastewater via adding sodium sulfate to prevent nitrogen generation in the cathode".ENVIRONMENTAL RESEARCH 186(2020):1-9.