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Physicochemical Characterization of Raw and Modified Banana Pseudostem Fibers and Their Adsorption Capacities for Heavy Metal Pb2+ and Cd2+ in Water

文献类型： 外文期刊

作者： Sheng, Zhanwu 1 ; Shen, Yixiao 2 ; Dai, Haofu 4 ; Pan, Siyi 1 ; Ai, Binling 2 ; Zheng, Lili 2 ; Zheng, Xiaoyan 2 ; Xu, Zh 1 ;

作者机构： 1.Huazhong Agr Univ, Coll Food Sci & Technol, Wuhan 430070, Hubei, Peoples R China

2.Chinese Acad Trop Agr Sci, Haikou Key Lab Banana Biol, Haikou Expt Stn, Haikou 570101, Hainan, Peoples R China

3.Louisiana State Univ, Agr Ctr, Sch Nutr & Food Sci, Baton Rouge, LA 70803 USA

4.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Haikou 571101, Hainan, Peoples R China

期刊名称：POLYMER COMPOSITES （ 影响因子：3.171； 五年影响因子：2.877 ）

ISSN： 0272-8397

年卷期： 2018 年 39 卷 6 期

页码：

收录情况： SCI

摘要： The banana pseudostem fiber was modified by steam explosion and cellulose xanthogenation methods to enhance the capacity of absorbing heavy metal ions Pb2+ and Cd2+. The surface morphologies of the steam exploded (SEBF) and cellulose xanthogenate (SEBF-CX) modified fibers were in loose form and had more surface area. The intensity of -CH, -C=O, C=C, or C-O-C group in SEBF or SEBF-CX was lower due to hemicellulose and lignin were reduced after the modification, while the cellulose crystallinity and thermal stability were increased based on X-ray diffraction and thermal analysis. SEBF had higher adsorption capacity at Pb2+ concentration below 100 mg/L. However, SEBF-CX exhibited higher capacity at high concentration of Pb2+. SEBF-CX had higher adsorption capacity of removing Cd2+ as well. The adsorption kinetic of SEBF-CX was fit to the pseudo second-order. In general, SEBF-CX could be used as an economical and efficient absorbent for removing heavy metal ion pollutes in water. (C) 2016 Society of Plastics Engineers

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