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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, Juan1,4; Qiu, Peihuang2; Yan, Xiangjun2; Xiong, Xiong1; Jing, Liandong3; Wu, Chenxi1
2015-10-01
Source PublicationWATER AIR AND SOIL POLLUTION
ISSN0049-6979
Volume226Issue:10
AbstractCalcium 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.
SubtypeArticle
KeywordInternal Loading Sediment Phosphorus Fractionation Nitrogen Cycle
DOI10.1007/s11270-015-2590-4
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Water Resources
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences ; Water Resources
WOS KeywordSHALLOW LAKE ; EUTROPHIC LAKE ; BINDING CLAY ; RELEASE ; WATER ; RESTORATION ; ALUMINUM ; IRON ; FRACTIONATION ; REMEDIATION
WOS IDWOS:000361764400009
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/27212
Collection水环境工程研究中心
Affiliation1.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
Recommended Citation
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).
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