Efficient removal of Alizarin Red S from aqueous solution by polyethyleneimine functionalized magnetic carbon nanotubes

被引:49
|
作者
Zhang, Zhifeng [1 ]
Chen, Huijuan [1 ]
Wu, Wenmei [1 ]
Pang, Wenting [1 ]
Yan, Guiqin [1 ]
机构
[1] Shanxi Normal Univ, Linfen 041000, Shanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Magnetic carbon nanotubes; Polyethyleneimine; Removal; Alizarin Red S; ANION-EXCHANGE MEMBRANE; ADSORPTION PERFORMANCE; GRAPHENE OXIDE; WATER; NANOPARTICLES; DEGRADATION; BEHAVIOR; DYE; NANOCOMPOSITE; VIOLET;
D O I
10.1016/j.biortech.2019.122100
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Alizarin Red S (ARS) has been extensively used in the dyeing industry. In order to effectively remove the ARS form dyeing wastewater, polyethyleneimine (PEI)-functionalized magnetic carbon nanotubes (PEI@MCNTs) adsorbent was successfully prepared and its adsorption performances were also investigated in detail. The PEI@ MCNTs could efficiently remove the ARS from acidic aqueous solution (pH < 6.0) within 40 min under room temperature. Benefiting from a large number of adsorption sites and multiple interactions, PEI@MCNTs possessed high selectivity towards ARS with spontaneous adsorption process. The maximum adsorption capacity of PEI@MCNTs for ARS was 196.08 mg g(-1) obtained from Langmuir isotherm, higher than that of available conventional adsorbents. Moreover, the PEI@MCNTs could be easily collected by an external magnet, and then effectively regenerated through 10 mM NaOH solution. The prepared PEI@MCNTs could be considered as the promising adsorbent for the removal of anthraquinone dyes in large-scale wastewater treatment.
引用
收藏
页数:10
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