Thermodynamics of binding interactions between extracellular polymeric substances and heavy metals by isothermal titration microcalorimetry
文献类型：期刊论文
| 作者 | Yan, Peng1,2 ; Xia, Jia-Shuai3; Chen, You-Peng1,2; Liu, Zhi-Ping3; Guo, Jin-Song1,2; Shen, Yu1,2; Zhang, Cheng-Cheng3; Wang, Jing4
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| 刊名 | BIORESOURCE TECHNOLOGY
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| 出版日期 | 2017-05-01 |
| 卷号 | 232页码:354-363 |
| 关键词 | Extracellular polymeric substances Heavy metals Isothermal titration calorimetry Biosorption |
| ISSN号 | 0960-8524 |
| DOI | 10.1016/j.biortech.2017.02.067 |
| 通讯作者 | Chen, YP (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China. |
| 英文摘要 | Extracellular polymeric substances (EPS) play a crucial role in heavy metal bio-adsorption using activated sludge, but the interaction mechanism between heavy metals and EPS remains unclear. Isothermal titration calorimetry was employed to illuminate the mechanism in this study. The results indicate that binding between heavy metals and EPS is spontaneous and driven mainly by enthalpy change. Extracellular proteins in EPS are major participants in the binding process. Environmental conditions have significant impact on the adsorption performance. Divalent and trivalent cations severely impeded the binding of heavy metal ions to EPS. Electrostatic interaction mainly attributed to competition between divalent cations and heavy metal ions; trivalent cations directly competed with heavy metal ions for EPS binding sites. Trivalent cations were more competitive than divalent cations for heavy metal ion binding because they formed complexing bonds. This study facilitates a better understanding about the interaction between heavy metals and EPS in wastewater treatment. (C) 2017 Elsevier Ltd. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[51508546] ; National Natural Science Foundation of China[51578527] ; Chongqing Education Commission[KJ1504207] |
| WOS研究方向 | Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000400867100043 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://172.16.51.4:88/handle/2HOD01W0/234]  |
| 专题 | 水质生物转化研究中心 |
| 通讯作者 | Chen, You-Peng |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Chinese Acad Sci, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China 3.Chongqing Univ, Key Lab Three Gorges Reservoir Regions Ecoenviron, Chongqing 400045, Peoples R China 4.Chongqing Jianzhu Coll, Chongqing 400072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Peng,Xia, Jia-Shuai,Chen, You-Peng,et al. Thermodynamics of binding interactions between extracellular polymeric substances and heavy metals by isothermal titration microcalorimetry[J]. BIORESOURCE TECHNOLOGY,2017,232:354-363. |
| APA | Yan, Peng.,Xia, Jia-Shuai.,Chen, You-Peng.,Liu, Zhi-Ping.,Guo, Jin-Song.,...&Wang, Jing.(2017).Thermodynamics of binding interactions between extracellular polymeric substances and heavy metals by isothermal titration microcalorimetry.BIORESOURCE TECHNOLOGY,232,354-363. |
| MLA | Yan, Peng,et al."Thermodynamics of binding interactions between extracellular polymeric substances and heavy metals by isothermal titration microcalorimetry".BIORESOURCE TECHNOLOGY 232(2017):354-363. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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