Selective Removal of La(III) Ions Using Super-Paramagnetic Nanosorbent Coated by Saponified sec-Octylphenoxy Acetic Acid

详细信息    查看全文

• 作者：Baohui Zhu ; Dongbei Wu ; Yuhui Yang ; Yonggui Chen ; Wenjun Li ; Junfang Guo ; Qigang Wang
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2012
• 出版时间：February 9, 2012
• 年：2012
• 卷：57
• 期：2
• 页码：553-560
• 全文大小：301K
• 年卷期：v.57,no.2(February 9, 2012)
• ISSN：1520-5134

文摘

Super paramagnetic nanosorbents coated by saponified sec-octylphenoxy acetic acid (MSCA-12) were prepared as a kind of sorbent for magnetically assisted chemical separation of lanthanum(III) ions using a equilibrium batch experiment. The effects of various parameters such as contact time, pH, ion strength, interference ions, and metal ion concentration on the adsorption was investigated. The optimal pH for La(III) ions was equilibrium pH 7.0. The adsorption isotherm followed the Langmuir model with the maximum sorption capacity of 22.0 mg路g^鈥?. The sorbent showed a good affinity toward La(III), and the stability of the sorbent in acidic solutions was also improved by the coating. The recovery of La(III) could be achieved using a 0.01 mol路kg^鈥? HCl solution. The repeated use three times of the adsorbent was possible. The sorbent was shown to have potential in the extraction of La(III) from the lake water, ground waters, and artificial wastewater.