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Photoreduction of mercuric salt in UV/Fe (III)-oxalate complex system
Deng, Lin; Wu, Feng; Chen, Yong; Deng, Nansheng; Liu, Jiantong; Deng, N, Wuhan Univ, Sch Resources & Environm Sci, Wuhan 430072, Peoples R China
2006
Source PublicationFRESENIUS ENVIRONMENTAL BULLETIN
ISSN1018-4619
Volume15Issue:6Pages:484-488
AbstractIn this paper, the photochemical reduction process of Hg (II) in aqueous solution containing ferric iron and oxalate (Ox) has been studied. Under the radiation of a low-pressure mercury lamp (lambda = 253.7 nm, 8W), Fe(III)-oxalate complexes undergo photolysis to produce ferrous ions and other organic reductive species, which reduce Hg(II) subsequently. For 0.1 mg/L Hg (II), the photoreduction efficiency is comparatively higher in the solution at pH 5.0 than that over the range of 3.0 similar to 8.0. The photoreduction efficiency of Ho (II) in aqueous solution increases with increasing, initial concentration of ferric ions from 0.02 mmol/L to 0.2 mmol/L and initial concentration of oxalate from 0.96 mmol/L to 4.8 mmol/L and then gradually approaches to a steady state. CH3OH also contributes the reduction of Hg (II). We investigate the increase of the ferric, oxalate and CH3OH concentrations resulting from the increase of reduction efficiency of Hg (II). It can be seen that ferrous ions and other reactive species are reductants of Hg (II), and the reaction product with oxalate is mainly volatile metallic mercury.; In this paper, the photochemical reduction process of Hg (II) in aqueous solution containing ferric iron and oxalate (Ox) has been studied. Under the radiation of a low-pressure mercury lamp (lambda = 253.7 nm, 8W), Fe(III)-oxalate complexes undergo photolysis to produce ferrous ions and other organic reductive species, which reduce Hg(II) subsequently. For 0.1 mg/L Hg (II), the photoreduction efficiency is comparatively higher in the solution at pH 5.0 than that over the range of 3.0 similar to 8.0. The photoreduction efficiency of Ho (II) in aqueous solution increases with increasing, initial concentration of ferric ions from 0.02 mmol/L to 0.2 mmol/L and initial concentration of oxalate from 0.96 mmol/L to 4.8 mmol/L and then gradually approaches to a steady state. CH3OH also contributes the reduction of Hg (II). We investigate the increase of the ferric, oxalate and CH3OH concentrations resulting from the increase of reduction efficiency of Hg (II). It can be seen that ferrous ions and other reactive species are reductants of Hg (II), and the reaction product with oxalate is mainly volatile metallic mercury.
SubtypeArticle
KeywordHg (Ii) Fe (Iii)-oxalate Complex Photoreduction
DepartmentWuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Subject AreaEnvironmental Sciences
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000239177700003
WOS KeywordAQUEOUS-SOLUTIONS ; CHROMIUM(VI) ; FERRIOXALATE ; REDUCTION ; CITRATE ; WATER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8906
Collection期刊论文
Corresponding AuthorDeng, N, Wuhan Univ, Sch Resources & Environm Sci, Wuhan 430072, Peoples R China
Affiliation1.Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Deng, Lin,Wu, Feng,Chen, Yong,et al. Photoreduction of mercuric salt in UV/Fe (III)-oxalate complex system[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2006,15(6):484-488.
APA Deng, Lin,Wu, Feng,Chen, Yong,Deng, Nansheng,Liu, Jiantong,&Deng, N, Wuhan Univ, Sch Resources & Environm Sci, Wuhan 430072, Peoples R China.(2006).Photoreduction of mercuric salt in UV/Fe (III)-oxalate complex system.FRESENIUS ENVIRONMENTAL BULLETIN,15(6),484-488.
MLA Deng, Lin,et al."Photoreduction of mercuric salt in UV/Fe (III)-oxalate complex system".FRESENIUS ENVIRONMENTAL BULLETIN 15.6(2006):484-488.
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