Adsorption of Pb(II) by N-methylimidazole modified palygorskite

作者：Chang Yue^*; Liu Hongwei; Zha Fei; Chen Hukui; Ren Xiaoning; Lei Ziqiang

来源：Chemical Engineering Journal, 2011, 167(1): 183-189.

DOI：10.1016/j.cej.2010.10.081

• N-methylimidazole anchored palygorskite
• Lead
• Adsorption
• Kinetics
• Isotherms

In this study, an efficient adsorbent was synthesized by successfully anchoring N-methylimidazole on activated palygorskite and which was then used to investigate the adsorption behavior of Pb(II) ions from aqueous solutions. The FT-IR, thermal analyses and SEM were done to observe the immobilization of N-methylimidazole onto activated palygorskite. The effects of adsorbent dose. pH, contact time, ionic strength and temperature on the adsorption were investigated. The maximum adsorption capacity is 714.29 mg g(-1) at 283 K. The kinetic study indicates that the adsorption is a pseudo-second-order process. The adsorption was well fitted by the Langmuir adsorption isotherm model.

• 出版日期2011-2-15
• 单位西北师范大学