KMS Chongqing Institute of Green and Intelligent Technology, CAS
| The research on adsorption efficiency of toxic nickel ion using synthetic α-MnO2 | |
Li, S.1; Yu, L.1; Jiao, B.Q.1; Yin, Y.J.2 ; Li, D.2; Zhao, Z.Q.1
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| 2015 | |
| 摘要 | We discuss the adsorption efficiency of α-MnO2for Ni2+in water under various conditions. The adsorption kinetics of α-MnO2fitted the pseudo-second-order model better than the pseudofirst-order model. The adsorption efficiency increased rapidly at 0-30 minutes, although after 90 minutes, the rate of adsorption efficiency was almost 0. The pH affected the adsorption efficiency significantly. From pH 2 to 4, the adsorption efficiency increased sharply as the pH increased. At pH≥4, the adsorption efficiency was high, and at pH 8, it reached a maximum of 63%. Increasing the temperature also increased the adsorption efficiency, suggesting that the adsorption reaction is endothermic. For reaction systems containing more than 10 mmol α-MnO2, the adsorption efficiency for Ni2+was nearly 100%. © 2015 W. S. Maney & Son Ltd. |
| DOI | 10.1179/1432891715Z.0000000002172 |
| 发表期刊 | Materials Research Innovations
 |
| ISSN | 14328917 |
| 卷号 | 19页码:295-298 |
| 通讯作者 | Jiao, B.Q. (j.binquan@cqu.edu.cn) |
| 收录类别 | EI |
| 语种 | 英语 |
| EISSN | 1433075X |
