武 梦1，霍凯旋2，徐 斐2，曹 慧2，叶 泰2，袁 敏2，罗春艳2，戴雨皓2，阴凤琴2*
（1.上海理工大学材料与化学学院，上海 200093；
2.上海理工大学健康科学与工程学院，上海食品快速检测工程技术研究中心，上海 200093）
摘要：以N,N,N-三甲基-3-（2-甲基烯丙酰氨基）-1-氯化丙铵为季铵阳离子单体，采用冷冻聚合法制备了一种简单的除砷水凝胶吸附剂p（MPTAC）。p（MPTAC）吸附剂为多孔的疏松结构，对As（V）有良好的吸附效果和较快的传质速率，在pH 9时，As（V）溶液初始浓度为500 mg/L，于25 ℃下吸附30 min即可达到吸附平衡，其最大吸附容量高达103.56 mg/g。吸附材料吸附As（V）离子的热力学符合Langmuir方程，吸附动力学符合准二级动力学方程，且经过五次吸附-解吸循环后，对As（V）去除率能够保持在86.5%以上，具备较好的再生使用性能。该材料可作为潜在的吸附材料用于实际水样微量砷的去除与检测。
关键词：水凝胶；冷冻聚合；As（V）；吸附
中图分类号：O648.17 文献标识码：A 文章编号：1674-506X（2022）05-0008-0006
Preparation of p（MPTAC）Porous Hydrogel and Adsorption Evaluation to As（Ⅴ）
WU Meng1, HUO Kaixuan2, XU Fei2, CAO Hui2, YE Tai2, YUAN Min2, LUO Chunyan2, DAI Yuhao2, YIN Fengqin2*
（1.School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China;
2.School of Health Science and Engineering, Shanghai Engineering Research Center for Food Rapid Detection, University of Shanghai for Science and Technology, Shanghai 200093, China）
Abstract：Using N, N, N-trimethyl-3-(2- methacrylamido)-1-propylammonium chloride as the quaternary ammonium cationic monomer, a simple type of arsenic-removing adsorbent p (MPTAC) hydrogel was prepared by freezing polymerization. The adsorbent p (MPTAC) with porous and loose structure, has good adsorption effect and fast mass transfer rate for As (V). At pH 9，the initial concentration of As (V) solution is 500 mg/L, and the adsorption equilibrium can be reached after 30 minutes at 25 ℃, and its maximum adsorption capacity is up to 103.56 mg/g. The thermodynamics of adsorbing As (V) ions by the adsorbent conforms to the Langmuir equation and the adsorption kinetics conforms to the pseudo- second- order kinetic equation. And after five adsorption-desorption cycles, the removal rate of As (V) can be maintained above 86.5%, showing it has good regeneration performance and is beneficial to the removal and detection of As (V) in the real water.
Keywords：hydrogel; freezing polymerization; As (V); adsorption
doi：10.3969/j.issn.1674-506X.2022.05-002
收稿日期：2022-02-25
基金项目：国家自然科学基金（31671934）；上海市科委（20392001600）
作者简介：武梦（1993-），女，硕士研究生。研究方向：食品质量安全控制。
*通信作者：阴凤琴（1985-），女，博士，讲师。研究方向：食品质量安全控制。
引用格式：武梦,霍凯旋,徐斐,等.p（MPTAC）多孔水凝胶的制备及其对 As（Ⅴ）的吸附[J].食品与发酵科技,2022,58(5):8-13.
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