Design and coagulation mechanism of a new functional composite coagulant in removing humic acid
文献类型：期刊论文
| 作者 | Yue, Ye ; An, Guangyu; Lin, Leiming; Demissie, Hailu; Yang, Xiaofang; Jiao, Ruyuan; Wang, Dongsheng
|
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2022-07-01 |
| 卷号 | 292期号:0页码:121016 |
| 关键词 | NATURAL ORGANIC-MATTER FLOC PROPERTIES POLYALUMINUM CHLORIDE WATER PERFORMANCE ADSORPTION BEHAVIOR POLYMER SIZE AL |
| ISSN号 | 1383-5866 |
| 英文摘要 | The deep removal of organic pollutants is a challenging task for coagulation technology in the drinking water and wastewater treatment plants to satisfy the rising water standards. To obtain high removal efficiency for organic matter (OM), a novel coagulant, Fe-PAA, was developed based on ferric salts and polyacrylic acid (PAA) in this study, which contained long flexible carbon chain and positive coordination sites. The humic acid (HA) was employed as a representative OM target with wide molecular weight range in the coagulation tests. The coagulant Fe-PAA with Fe3+/COOH ratio of 1:1 exhibited the promising coagulation performance meeting with the initial design principle. Compared to ferric chloride, Fe-PAA-1:1 exhibited overall advantages on HA removal, formation of large and compact flocs, and control of residual Fe3+. As a macromolecular coagulant, Fe-PAA-1:1 demonstrated the synergetic advantages of iron hydrolysis components and flexible long-chain polymers. The charge neutralization and bridging effects dominated coagulation process under acidic condition, while complexation and bridging effects were the main driving force of Fe-PAA-1:1 under neutral and alkaline conditions for HA removal. Overall, this study provides revelatory information for the development of a new kind of highly efficient and cost-effective coagulant to satisfy the demand of current water treatment. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47685]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 通讯作者 | An, Guangyu |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Arba Minch Univ, Dept Chem, Arba Minch 021, Ethiopia 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Yangtze River Delta Branch, Yiwu 322000, Zhejiang, Peoples R China 4.Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Peoples R China 5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yue, Ye,An, Guangyu,Lin, Leiming,et al. Design and coagulation mechanism of a new functional composite coagulant in removing humic acid[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,292(0):121016. |
| APA | Yue, Ye.,An, Guangyu.,Lin, Leiming.,Demissie, Hailu.,Yang, Xiaofang.,...&Wang, Dongsheng.(2022).Design and coagulation mechanism of a new functional composite coagulant in removing humic acid.SEPARATION AND PURIFICATION TECHNOLOGY,292(0),121016. |
| MLA | Yue, Ye,et al."Design and coagulation mechanism of a new functional composite coagulant in removing humic acid".SEPARATION AND PURIFICATION TECHNOLOGY 292.0(2022):121016. |
入库方式： OAI收割
来源：生态环境研究中心
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