Adsorption for copper(II) ion with chitosan-SP/PET composite adsorbent enhanced by electric field
Adsorption for copper(II) ion with chitosan-SP/PET composite adsorbent enhanced by electric field
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电场增强壳聚糖-SP/PET复合吸附剂对铜(II)离子的吸附
DOI：
10.1177/0263617419825505
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发表时间：
2019-02
影响因子：
2.9
通讯作者：
Li Jianxin
中科院分区：
文献类型：
--
作者：
Song Yunfei;Kong Aiqun;Ji Yanhong;He Benqiao;Wang Hong;Li Jianxin
研究了吸附与电场驱动离子富集相结合去除废水中痕量金属离子的方法。采用非溶剂诱导相分离法将壳聚糖（CS）和植酸钠（SP）负载在聚对苯二甲酸乙二醇酯（PET）无纺布上，制备了复合吸附剂。结果表明，当施加电压从0到1.2 V时，吸附到CS-SP/PET吸附剂上的铜离子（Cu（II））的去除率对于10 mg L − 1的Cu（II）溶液从56%提高到88%。吸附行为符合Langmuir吸附等温式。吸附过程符合准二级动力学方程，表明化学吸附为限速步骤。能耗也很经济，每立方米含10 mg L − 1 Cu（II）的水约为4.35 × 10 − 3 kW·h。结果表明，电场作用下CS-SP/PET吸附剂对Cu（II）的富集作用增强了吸附剂对Cu（II）的吸附性能。本工作为废水中痕量重金属离子的去除提供了一种新的途径。
A method combining adsorption with electric field-driven ion enrichment to remove the trace metal ions in wastewater was investigated. Composite adsorbent prepared from chitosan (CS) and sodium phytate (SP) supported into polyethylene glycol terephthalate (PET) nonwoven fabric by nonsolvent induced phase separation was employed and located near the cathode in a pair of titanium plate electrodes. Results showed the removal rate of copper ions (Cu(II)) adsorbed onto CS-SP/PET adsorbent was increased from 56% to 88% for 10 mg L−1 Cu(II) solution when the applied voltage was from 0 to 1.2 V. The adsorption behavior was well correlated with the Langmuir isotherm model. And adsorption process fitted well for pseudo-second-order kinetic equation, suggesting that chemical adsorption was rate-limiting step. And the energy consumption was economical, about 4.35 × 10−3 kW·h for 1 m3 of water with 10 mg L−1 Cu(II). It was suggested that the adsorption performance for Cu(II) with CS-SP/PET adsorbent was enhanced due to the enrichment of Cu(II) under electric field. This work provides a new way to remove trace heavy metal ions from wastewater.
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影响因子：
9.9
作者：
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通讯作者：
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影响因子：
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作者：
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