木质素水凝胶吸附Zn(II)的研究  

Study on the adsorption of Zn(II)by lignin hydrogels

作　　者：郝一男[1,2] 李梦瑶 王任飞 盛健 遆晓刚 艾桂玲 沈洪霞 王硕[5] HAO Yinan;LI Mengyao;WANG Renfei;SHENG Jian;DI Xiaogang;AI Guiling;SHEN Hongxia;WANG Shuo(College of Material Science and Art Design,Inner Mongolia Agricultural University,Hohhot 010018,China;National Forestry Grassland Engineering Technology Research Center for Efficient Development and Utilization of Sandy Shrubs,Hohhot 010018,China;Inner Mongolia Geology and Mining Ecological Construction Limited Liability Company,Hohhot 010018,China;Erdos Forest Farm,Ordos 014300,China;Woqi Ecological Agriculture Limited of Jungar Banner,Ordos 017100,China)

机构地区：[1]内蒙古农业大学材料科学与艺术设计学院,内蒙古呼和浩特010018 [2]国家林业草原沙生灌木高效开发利用工程技术研究中心,内蒙古呼和浩特010018 [3]内蒙古地矿生态建设有限责任公司,内蒙古呼和浩特010018 [4]鄂尔多斯市造林总场,内蒙古鄂尔多斯014300 [5]准格尔旗沃奇生态农业开发有限公司,内蒙古鄂尔多斯017100

出　　处：《应用化工》2024年第8期1859-1863,1867,共6页Applied Chemical Industry

基　　金：内蒙古自治区科技计划项目(2022YFDZ0045);准格尔旗科技计划项目(2023YY-12)。

摘　　要：通过接枝共聚制得木质素磺酸钠和丙烯酸的聚合物,通过与蒙脱土进行插层结合得到木质素水凝胶,用于探究对Zn(Ⅱ)的吸附性能。结果表明:所制备的水凝胶具有良好的吸附性和pH响应性。在溶液初始浓度为600 mg/L,pH=4.5,吸附温度45℃,吸附时间140 min条件下,吸附量最大达285.39 mg/g,该吸附过程符合准二级动力学模型和Langmuir吸附等温线模型,说明吸附是单分子层吸附。The polymer of sodium lignosulfonate and acrylic acid was prepared by grafting copolymerization,and lignin hydrogel was obtained by the polymer intercalated with montmorillonite,and the adsorption performance of Zn(Ⅱ)by lignin hydrogel was investigated.The results showed that the prepared hydrogels have good adsorbability of Zn(Ⅱ)and pH response.The adsorption capacity reached 285.39 mg/g,under the initial solution concentration of 600 mg/L,pH=4.5,adsorption temperature of 45℃and adsorption time of 140 min,respectively.Modeling of adsorption kinetics indicated good agreement of experimental data with the quasi-second-order kinetic model.Langmuir equilibrium isotherm fitted the experimental data reasonable well,the adsorption is monolayer adsorption.

关 键 词：木质素 蒙脱土 水凝胶 吸附 

分 类 号：TQ424.1[化学工程]