Chemical changes in heavy metals in the leachates from Technosols
文献类型：期刊论文
| 作者 | Yao, F. X.1,2; Macias, F.3; Virgel, S.1; Blanco, F.1; Jiang, X.2; Camps Arbestain, M.1 |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2009-09-01 |
| 卷号 | 77期号:1页码:29-35 |
| 关键词 | Sewage sludge Inorganic conditioner Heavy metals Fractionation Leaching |
| ISSN号 | 0045-6535 |
| DOI | 10.1016/j.chemosphere.2009.06.012 |
| 通讯作者 | Yao, F. X.(fyao@neiker.net) |
| 英文摘要 | A 2 month long column study was conducted to evaluate the mobility of heavy metals eluting from Technosols constituted from sewage sludges (aerobic or anaerobic) (as controls) or a mixture of different types of sewage sludges with green foundry sand (FS) or/and Linz-Donowitz slag (LD). The organic and inorganic wastes were mixed at a ratio of 56:44 (w/w). The mixtures and the controls were moistened to field capacity before adding them to the polypropylene columns (4.5 cm wide and 14 cm long). During the 8-week experimental period, the columns were watered, twice a week, with 100 mL of deionised water. The concentrations of heavy metals (Cu, Zn, Ni, Pb, Cd, and Cr) in the leachates were determined periodically. The concentrations of all the heavy metals were generally higher in the leachates from the Technosols containing anaerobic sewage sludge as a component. The concentration of Cu was strongly dependent on pH and was significantly higher (P < 0.05) in the most alkaline leachates (pH > 10) than in the other leachates. More Zn was mobilized in the most acidic leachates (pH < 6) than in other leachates. The concentration of Ni in 80% of the leachates exceeded the EU drinking water limit for Ni (0.02 mg L(-1)). The concentrations of Pb were lower in the Technosols containing FS. The concentrations of Cd in the leachates from Technosols containing the conditioners were relatively high, while concentrations of Cr were higher in the controls. As far as the potential toxicity of heavy metals is concerned, the combination of aerobic sludge, inorganic conditioners able to buffer the pH to around neutrality, and reactive aluminosilicates, can be regarded as suitable choice for formulating Technosols from wastes. (C) 2009 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | SEWAGE-SLUDGE ; AMENDED SOILS ; CHROMIUM ; ACID ; CHEMISTRY ; CADMIUM |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000270348700005 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558786 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Yao, F. X. |
| 作者单位 | 1.NEIKER Inst Vasco Invest & Desarrollo Agr, Derio 48160, Bizkaia, Spain 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 3.Univ Santiago de Compostela, Fac Biol, Dept Edafol & Quim Agr, Santiago De Compostela 15782, Spain |
| 推荐引用方式 GB/T 7714 | Yao, F. X.,Macias, F.,Virgel, S.,et al. Chemical changes in heavy metals in the leachates from Technosols[J]. CHEMOSPHERE,2009,77(1):29-35. |
| APA | Yao, F. X.,Macias, F.,Virgel, S.,Blanco, F.,Jiang, X.,&Camps Arbestain, M..(2009).Chemical changes in heavy metals in the leachates from Technosols.CHEMOSPHERE,77(1),29-35. |
| MLA | Yao, F. X.,et al."Chemical changes in heavy metals in the leachates from Technosols".CHEMOSPHERE 77.1(2009):29-35. |
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来源：南京土壤研究所
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