摘要
以甘蔗渣和马铃薯淀粉为原料,经碱浸泡、碱化、醚化后制得羧甲基纤维素和羧甲基淀粉,然后以此为母体,与单体丙烯酸和丙烯酰胺经接枝聚合制得金属离子吸附树脂。研究了动态法以及静态法树脂吸附的时间、树脂的粒径以及不同的离子浓度对Cd^(2+)吸附量的影响;通过红外光谱、热失重分析、X射线衍射以及扫描电镜等仪器分析手段对原料以及合成的吸附树脂吸附前后进行了表征,证明得到吸附树脂。吸附性能测试实验表明,该吸附树脂对Cd^(2+)具有较强的吸附能力,动态法对质量浓度为476.48 mg/L的Cd^(2+)的去除率可达90.78%。
The production of carboxymethyl cellulose and carboxymethyl starch from sugarcane bagasse and potato starch involved a series of chemical reactions,including alkali soaking,alkalization,and etherification.These monomeric precursors,acrylic acid and acrylamide,served as the building blocks for the subsequent graft polymerization process,which yielded the final metal ion adsorption resins.The investigation encompassed the dynamic and static methods and focused on the impact of the adsorption time of the resin,the particle size of the resin and the differing ion concentrations on the adsorption amount of Cd^(2+).The raw materials and the synthesized adsorbent resins underwent characterization before and after adsorption by means of instrumental analyses such as infrared spectroscopy,heat loss analysis,X-ray diffraction and scanning electron microscopy.The adsorption performance test showed that the adsorbent resin had a strong adsorption capacity for Cd^(2+),and the removal rate of Cd^(2+)at a concentration of 476.48 mg/L could reach 90.78%by the dynamic method.
作者
马先斌
石贤华
王全军
孔辉
亓晓烨
戚凤杰
张如愿
杨永启
MA Xianbin;SHI Xianhua;WANG Quanjun;KONG Hui;QI Xiaoye;QI Fengjie;ZHANG Ruyuan;YANG Yongqi(Rizhao City Bureau of Ecological and Environmental Protection,Ju County Branch,Rizhao 276500,China;Linyi Key Laboratory of Emission Mitigation and Low-Carbon Technologies in Animal Husbandry,Linyi Vocational College,Linyi 276017,China;College of Chemical Engineering and Environment,Weifang University of Science and Technology,Weifang 262700,China)
出处
《山东化工》
2025年第15期34-39,共6页
Shandong Chemical Industry
基金
山东省自然科学基金项目(ZR2020QB084)
教育部高教司产学研协同育人项目(230805042221336)。
关键词
生物质
吸附树脂
二价镉离子
吸附性能
高去除率
biomass
adsorbent resin
divalent cadmium ions
adsorption performance
high removal rate
