Production, Characterization, and Flocculation Mechanism of Cation Independent, pH Tolerant, and Thermally Stable Bioflocculant from Enterobacter sp ETH-2
文献类型：期刊论文
| 作者 | Tang, Wei1 ; Song, Liyan1,2; Li, Dou1,2; Qiao, Jing1; Zhao, Tiantao3; Zhao, Heping4
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| 刊名 | PLOS ONE
 |
| 出版日期 | 2014-12-08 |
| 卷号 | 9期号:12页码:19 |
| ISSN号 | 1932-6203 |
| DOI | 10.1371/journal.pone.0114591 |
| 通讯作者 | Song, LY (reprint author), Chinese Acad Sci, Res Ctr Environm Microbiol & Ecol, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China. |
| 英文摘要 | Synthetic high polymer flocculants, frequently utilized for flocculating efficiency and low cost, recently have been discovered as producing increased risk to human health and the environment. Development of a more efficient and environmentally sound alternative flocculant agent is investigated in this paper. Bioflocculants are produced by microorganisms and may exhibit a high rate of flocculation activity. The bioflocculant ETH-2, with high flocculating activity (2849 mg Kaolin particle/mg ETH-2), produced by strain Enterobacter sp. isolated from activated sludge, was systematically investigated with regard to its production, characterization, and flocculation mechanism. Analyses of microscopic observation, zeta potential and ETH-2 structure demonstrates the bridging mechanism, as opposed to charge neutralization, was responsible for flocculation of the ETH-2. ETH-2 retains high molecular weight (603 to 1820 kDa) and multi-functional groups (hydroxyl, amide and carboxyl) that contributed to flocculation. Polysaccharides mainly composed of mannose, glucose, and galactose, with a molar ratio of 1:2.9:9.8 were identified as the active constituents in bioflocculant. The structure of the long backbone with active sites of polysaccharides was determined as a primary basis for the high flocculation activity. Bioflocculant ETH-2 is cation independent, pH tolerant, and thermally stable, suggesting a potential fit for industrial application. |
| 资助项目 | Science and technology Cooperation Project (Science and Technology office of Guizhou Province)[2013-3] ; Science and technology Cooperation Project (The people's Government of Bijie City)[2013-3] ; Science and technology Cooperation Project (Kunming Institute of Chinese Academy of Sciences)[2013-3] ; National Natural Science Foundation of China[21107091] ; National Natural Science Foundation of China[21377109] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000346907600079 |
| 出版者 | PUBLIC LIBRARY SCIENCE |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/1225]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Song, Liyan |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Environm Microbiol & Ecol, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China 3.Chongqing Univ Technol, Sch Chem & Chem Engn, Chongqing 400054, Peoples R China 4.Zhejiang Univ, Coll Environm & Resource Sci, Key Lab Environm Remediat & Ecosyst Hlth, Minist Educ, Hangzhou 310058, Zhejiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Wei,Song, Liyan,Li, Dou,et al. Production, Characterization, and Flocculation Mechanism of Cation Independent, pH Tolerant, and Thermally Stable Bioflocculant from Enterobacter sp ETH-2[J]. PLOS ONE,2014,9(12):19. |
| APA | Tang, Wei,Song, Liyan,Li, Dou,Qiao, Jing,Zhao, Tiantao,&Zhao, Heping.(2014).Production, Characterization, and Flocculation Mechanism of Cation Independent, pH Tolerant, and Thermally Stable Bioflocculant from Enterobacter sp ETH-2.PLOS ONE,9(12),19. |
| MLA | Tang, Wei,et al."Production, Characterization, and Flocculation Mechanism of Cation Independent, pH Tolerant, and Thermally Stable Bioflocculant from Enterobacter sp ETH-2".PLOS ONE 9.12(2014):19. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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