Hydrous manganese dioxide modified poly(sodium acrylate) hydrogel composite as a novel adsorbent for enhanced removal of tetracycline and lead from water
文献类型：期刊论文
| 作者 | Minale, Mengist; Gu, Zaoli; Guadie, Awoke; Li, Yuan; Wang, Yuan; Meng, Yuan; Wang, Xuejiang |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2021-06 |
| 卷号 | 272页码:- |
| 关键词 | Lead Tetracycline Manganese dioxide Poly(sodium acrylate) Adsorption mechanism |
| ISSN号 | 0045-6535 |
| 英文摘要 | In this study, hydrous manganese dioxide (HMO) modified poly(sodium acrylate) (PSA) hydrogel was produced for the first time to remove tetracycline(TC) and lead(Pb(II)) from water. The as-prepared composite was characterized using various techniques, such as SEM-EDS, FTIR, XRD, BET, and XPS, to elucidate the successful loading of HMO and analyze subsequent sorption mechanisms. Different influencing parameters such as adsorbent dose, initial concentration of adsorbates, reaction time, solution pH, and temperature were also investigated. The adsorption kinetic studies of both TC and Pb(II) removal indicated that equilibriumwas achieved within 12 h, with respective removal rates of 91.9 and 99.5%, and the corresponding adsorption data were fitted to the second-order kinetics model. According to the adsorption isotherm studies, the sorption data of TC best fitted to the Langmuir isotherm model while the adsorption data of Pb(II) were explained by the Freundlich isotherm model. The maximum adsorption capacities of both TC and Pb(II) were found to be 475.8 and 288.7 mg/g, respectively, demonstrating excellent performances of the adsorbent. The uptake capacity of PSA-HMO was significantly influenced by the level of solution pH, in which optimum adsorption amount was realized at pH 4.0 in the TC and Pb(II) systems, respectively. Thermodynamic studies showed the process of TC and Pb(II) adsorptions were endothermic and spontaneous. Overall this study elucidated that PSA-HMO composite can be a promising candidate for antibiotics and heavy metal removal in water treatment applications. (C) 2021 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46119]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 作者单位 | 1.Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China 2.Tongji Univ, Coll Environm Sci & Engn, Inst Environm Sustainable Dev, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China 3.Chinese Acad Sci, Key Lab Environm Biotechnol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 4.Arba Minch Univ, Coll Nat Sci, Dept Biol, Arba Minch 21, Ethiopia |
| 推荐引用方式 GB/T 7714 | Minale, Mengist,Gu, Zaoli,Guadie, Awoke,et al. Hydrous manganese dioxide modified poly(sodium acrylate) hydrogel composite as a novel adsorbent for enhanced removal of tetracycline and lead from water[J]. CHEMOSPHERE,2021,272:-. |
| APA | Minale, Mengist.,Gu, Zaoli.,Guadie, Awoke.,Li, Yuan.,Wang, Yuan.,...&Wang, Xuejiang.(2021).Hydrous manganese dioxide modified poly(sodium acrylate) hydrogel composite as a novel adsorbent for enhanced removal of tetracycline and lead from water.CHEMOSPHERE,272,-. |
| MLA | Minale, Mengist,et al."Hydrous manganese dioxide modified poly(sodium acrylate) hydrogel composite as a novel adsorbent for enhanced removal of tetracycline and lead from water".CHEMOSPHERE 272(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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