Precipitates in landfill leachate mediated by dissolved organic matters
文献类型：期刊论文
| 作者 | Li, Zhenze; Xue, Qiang ; Liu, Lei; Li, Jiangshan
|
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2015 |
| 卷号 | 287页码:278-286 |
| 关键词 | Clogging Model NICA-Donnan Precipitate Calcite Dolomite |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2015.01.059 |
| 英文摘要 | Clogging of landfill leachate collection system is so ubiquitous that it causes problems to landfills. Although precipitations of calcite and other minerals have been widely observed, the mechanism of precipitation remains obscure. We examined the clog composition, dissolved organic matters, leachate chemical compositions and the correlation of these variables in view of the precipitation process. It is shown that Dissolved Organic Carbon (DOC) inhibits precipitation of landfill leachate. Using the advanced NICA-Donnan model, the analysis of aqueous chemical reactions between Mg-Ca-DOC-CO2 suggests a good agreement with experimental observations. Calcite and dolomite are both found to be oversaturated in most of the landfill leachate samples. DOC is found to preferentially bind with Mg than Ca, leading to more likely precipitation of Calcite than dolomite from landfill leachate. The NICA-Donnan model gives a reasonable estimation of dolomite saturation index in a wide range of DOC. Modeling confirms the major precipitation mechanism in terms of alkaline earth metal carbonate. Uncertainties in model parameters are discussed with particular focus on DOC composition, functional group types and density concentration and the influential factors. (C) 2015 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000353089700033 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3714]  |
| 专题 | 岩土力学所知识全产出_期刊论文 |
| 作者单位 | Chinese Acad Sci, Wuhan Inst Rock & Soil Mech |
| 推荐引用方式 GB/T 7714 | Li, Zhenze,Xue, Qiang,Liu, Lei,et al. Precipitates in landfill leachate mediated by dissolved organic matters[J]. JOURNAL OF HAZARDOUS MATERIALS,2015,287:278-286. |
| APA | Li, Zhenze,Xue, Qiang,Liu, Lei,&Li, Jiangshan.(2015).Precipitates in landfill leachate mediated by dissolved organic matters.JOURNAL OF HAZARDOUS MATERIALS,287,278-286. |
| MLA | Li, Zhenze,et al."Precipitates in landfill leachate mediated by dissolved organic matters".JOURNAL OF HAZARDOUS MATERIALS 287(2015):278-286. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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