Remediation and resource utilization of Cr(Ⅲ),Al(Ⅲ)and Zr(Ⅳ)-containing tannery effluent based on chitosan-carboxymethyl cellulose aerogel  

作　　者：Shuang Liang Xuechuan Wang Chao Wei Long Xie Zhongming Song Xugang Dang 

机构地区：[1]Institute of Biomass and Function Materials&National Demonstration Centre for Experimental Light Chemistry Engineering Education,College of Bioresources Chemistry and Materials Engineering,Shaanxi University of Science and Technology,Xi’an 710021,China [2]Xingye Leather Technology Co.,Ltd.,Jinjiang 362200,China [3]College of Chemistry and Chemical Engineering,Shaanxi University of Science and Technology,Xi’an 710021,China [4]College of Bioresources Chemical and Materials Engineering,National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science and Technology,Xi’an 710021,China

出　　处：《Journal of Bioresources and Bioproducts》2025年第1期77-91,共15页生物质资源与工程(英文)

基　　金：financial support of the Science and Technology Project of Quanzhou City(No.2024G03);Na-tional Natural Science Foundation of China(No.22478235);National Natural Science Foundation of China(No.22078183;No.22108165).

摘　　要：Composite aerogel based on sodium carboxymethyl cellulose(CMC-Na)and chitosan(CS),i.e.,CS/CMC-Na,was prepared through a sol-gel method.Then,CS/CMC-Na was used for simulating the adsorption of metal ions(Cr^(3+),Al^(3+)and Zr^(4+))produced by the tanning industry.The ad-sorption process is consistent with the Langmuir isotherm adsorption model and pseudo-second order kinetics.The maximum fitted adsorption capacities of Cr^(3+),Al^(3+),and Zr^(4+)could reach 250.0,111.1,and 100.0 mg/g,respectively.After metal ion adsorption,the obtained composite materials(CS/CMC-Na-Cr^(3+),CS/CMC-Na-Al^(3+),and CS/CMC-Na-Zr^(4+))were used as re-tanning agents in the re-tanning process to leather.The re-tanning agent could increase the shrinkage temperature of leather by up to 5℃.Compared with the traditional method,the method utilized in this study achieved the integration of mental ions-containing wastewater treatment and waste adsorbent/adsorbates recycling.

关 键 词：Wastewater treatment Biomass resource CHITOSAN Sodium carboxymethyl cellulose Resource utilization 

分 类 号：O64[理学—物理化学]