| Synthesis of new superabsorbent poly(NIPAAm/AA/N-allylisatin)nanohydrogel for effective removal of As(Ⅴ) and Cd(Ⅱ) toxic metal ions |
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| 作者姓名： | Viran P. Mahida Manish P. Patel |
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| 作者单位： | Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120, India |
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| 基金项目： | the University Grant Commission,New Delhi(Project No.F.39-685/2010(SR)),to whom researches are gratefully acknowledged. |
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| 摘 要： | The present studies highlight the effective removal of As（V） and Cd（II） from aqueous solutions by superabsorbent poly （NIPAAm/AA/N-allylisatin） nanohydrogel. Batch removal studies were performed as a function of treatment time, initial metal ion concentration, pH, and adsorbent dose. TEM micrographs confirm the particle size distribution in the range between 5 nm and 10 rim. The simple and metal ions adsorbed nanohydrogels were characterized by FF-IR, TGA, and EDX analysis. Finally, the equilibrium removal efficiency of the nanohydrogel was analyzed according to the Langmuir and Freundlich adsorption isotherm models which showed the removal of As（V） and Cd（II） metal ions fitted to Freundlich and Langmuir isotherms, respectively. Removal efficiency order of the metal ions is As（V） 〉 Cd（II）.
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| 关 键 词： | 有毒金属离子 NIPAAM 砷（V） Cd（Ⅱ） Langmuir 吸收性 等温线模型 合成 |
| 收稿时间： | 2013-08-02 |
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