Effectiveness and Mode of Action of Calcium Nitrate and Phoslock (R) in Phosphorus Control in Contaminated Sediment, a Microcosm Study

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	Effectiveness and Mode of Action of Calcium Nitrate and Phoslock (R) in Phosphorus Control in Contaminated Sediment, a Microcosm Study
	Lin, Juan 1,4; Qiu, Peihuang 2; Yan, Xiangjun 2; Xiong, Xiong 1; Jing, Liandong 3; Wu, Chenxi 1
刊名	WATER AIR AND SOIL POLLUTION
	2015-10-01
卷号	226 期号:10
关键词	Internal loading Sediment Phosphorus fractionation Nitrogen cycle
ISSN号	0049-6979
英文摘要	Calcium nitrate and a lanthanum-modified bentonite (Phoslock(R)) were investigated for their ability to control the release of phosphorus from contaminated sediment. Their effectiveness and mode of action were assessed using microcosm experiments by monitoring the variation of physiochemical parameters and phosphorus and nitrogen species over time following the treatment for 66 days. Phoslock(R) was more effective reducing phosphorus in overlaying water and controlling its release from sediment. Calcium nitrate improved redox condition at the sediment-water interface and temporally reduce phosphorus in overlaying water but phosphorus level returned back in a long run. Phosphorus fractionation suggested that Phoslock(R) converted mobile phosphorus to more stable species while calcium nitrate increased the fractions of mobile phosphorus species. Phoslock(R) generally showed no effect on nitrogen species. Whereas calcium nitrate temporally increased nitrate, nitrite, and ammonium concentrations but their concentrations quickly reduced likely due to the denitrification process. Results suggested that Phoslock(R) can be more effective in controlling the release of phosphorus from sediment than calcium nitrate. However, calcium nitrate can improve the redox condition at the sediment-water interface, which may provide other benefits such as stimulating biodegradation.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Environmental Sciences ; Meteorology & Atmospheric Sciences ; Water Resources
研究领域[WOS]	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Water Resources
关键词[WOS]	SHALLOW LAKE ; EUTROPHIC LAKE ; BINDING CLAY ; RELEASE ; WATER ; RESTORATION ; ALUMINUM ; IRON ; FRACTIONATION ; REMEDIATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000361764400009
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/27212]
专题	水生生物研究所_水环境工程研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 2.Hangzhou Urban River Supervis Ctr, Hangzhou 310008, Zhejiang, Peoples R China 3.Southwest Univ Nationalities, Coll Chem & Environm Protect Engn, Chengdu 610041, Peoples R China 4.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Lin, Juan,Qiu, Peihuang,Yan, Xiangjun,et al. Effectiveness and Mode of Action of Calcium Nitrate and Phoslock (R) in Phosphorus Control in Contaminated Sediment, a Microcosm Study[J]. WATER AIR AND SOIL POLLUTION,2015,226(10).
APA	Lin, Juan,Qiu, Peihuang,Yan, Xiangjun,Xiong, Xiong,Jing, Liandong,&Wu, Chenxi.(2015).Effectiveness and Mode of Action of Calcium Nitrate and Phoslock (R) in Phosphorus Control in Contaminated Sediment, a Microcosm Study.WATER AIR AND SOIL POLLUTION,226(10).
MLA	Lin, Juan,et al."Effectiveness and Mode of Action of Calcium Nitrate and Phoslock (R) in Phosphorus Control in Contaminated Sediment, a Microcosm Study".WATER AIR AND SOIL POLLUTION 226.10(2015).