标题: Enahanced biosorption of Cu(II) by magnetic chitosan microspheres immobilized Aspergillus sydowii (MCMAs) from aqueous solution

作者: Zhang, C (Zhang, Chao); Liu, SY (Liu, Siyao); Li, SX (Li, Shuangxi); Tao, Y (Tao, Yue); Wang, PP (Wang, Panpan); Ma, XY (Ma, Xinyue); Chen, LZ (Chen, Lanzhou)

来源出版物: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS  卷: 581  文献号: 123813  DOI: 10.1016/j.colsurfa.2019.123813  出版年: NOV 20 2019  

摘要: The magnetic chitosan microspheres immobilized Aspergillus sydowii (MCMAs) was prepared and characterized by SEM, BET, XRD and VSM analyses, and used to adsorb Cu(II) from aqueous solution under different influence factors such as contact time, initial Cu(II) concentration and biosorbent dose. Characterization results showed that MCMAs had large specific surface area and were rapidly separated from aqueous solution by using an adscititious magnetic field. Batch adsorption experiments showed that Cu(II) adsorption capacity of MCMAs was up to 119.21 mg g(-1) (under the optimal condition. The CO, OH and NH---) groups played an important role in Cu(II) chelation observed from FTIR spectra. Cu(II) adsorption onto MCMAs was well described by pseudo-second-order kinetics and Langmuir isotherm, and the adsorption process involved surface and intra-particle diffusion. In addition, MCMAs showed good recyclable efficiency after four adsorption-desorption cycles.

入藏号: WOS:000487764400030

语言: English

文献类型: Article

作者关键词: Magnetic chitosan microsphere; Aspergillus sydowii; Immobilization; Cu(II); Adsorption

地址: [Zhang, Chao; Liu, Siyao; Li, Shuangxi; Tao, Yue; Wang, Panpan; Ma, Xinyue; Chen, Lanzhou] Wuhan Univ, Hubei Res Ctr Environm Remediat Technol, Hubei Key Lab Biomass Resources Chem & Environm B, Coll Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.

通讯作者地址: Chen, LZ (通讯作者)，Wuhan Univ, Coll Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.

电子邮件地址: chenlz@whu.edu.cn

影响因子：3.131