| 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 Publication | FRESENIUS ENVIRONMENTAL BULLETIN
 |
| ISSN | 1018-4619 |
| Volume | 15Issue:6Pages:484-488 |
| Abstract | 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.; 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. |
| Subtype | Article |
| Keyword | Hg (Ii) Fe (Iii)-oxalate Complex Photoreduction |
| Department | Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| Subject Area | Environmental Sciences |
| WOS Headings | Science & Technology ; Life Sciences & Biomedicine |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| WOS ID | WOS:000239177700003 |
| WOS Keyword | AQUEOUS-SOLUTIONS ; CHROMIUM(VI) ; FERRIOXALATE ; REDUCTION ; CITRATE ; WATER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihb.ac.cn/handle/152342/8906 |
| Collection | 期刊论文 |
| Corresponding Author | Deng, N, Wuhan Univ, Sch Resources & Environm Sci, Wuhan 430072, Peoples R China |
| Affiliation | 1.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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