氧化石墨烯-丙烯酸聚合深度处理水产养殖尾水低浓度氨氮  

Deep Treatment of Low Concentration Ammonia Nitrogen from Aquaculture Tail Water by Graphene Oxide-acrylic Acid Polymer

作　　者：陈思佳 陈铭 刘嘉璇 杨国钻 吴桐 郑凯 CHEN Si-jia;CHEN Ming;LIU Jia-xuan;YANG Guo-zuan;WU Tong;ZHENG Kai(School of Environmental Engineering,Nanjing Insititute of Technology,Jiangsu Nanjing 211167,China)

机构地区：[1]南京工程学院环境工程学院,江苏南京211167

出　　处：《广州化工》2024年第10期39-41,共3页GuangZhou Chemical Industry

基　　金：江苏省高等学校大学生创新创业训练计划项目(No:202211276072Y)。

摘　　要：选择氧化石墨烯和丙烯酸为主要原料,在引发剂和交联剂作用下,通过超声波作用,在50~55℃下,聚合反应得到凝胶产品;傅里叶变换红外光谱分析样品的溴化钾压片,分析结果表明,吸附剂上有仍然键连有羟基、羰基。选择水产养殖水中的氨氮1~5 mg/L为研究参考目标,体积选择20 mL,加入吸附季吸附剂湿重0.5 g, 16 h后,去除率大于等于91%,处理后出水氨氮浓度小于0.5 mg/L,满足地表水一级排放标准。pH对吸附量影响实验,结果表明,pH大于9有利于吸附,此时,氨水的分布系数大于98%,此时溶液中主要存在的是氨水;吸附饱和后的凝胶通过0.1 mol/L的氯化钠可以实现良好的再生。The gel products was made from graphene oxide and acrylic acid used as the main raw materials by means of the action of initiator and crosslinking agent and ultrasonic condition at 50~55℃.Fourier transform infrared spectroscopy was selected to analyze the potassium bromide tablets of samples.The analyzed results indicated that there are still bonded hydroxyl groups on the adsorbent.1~5 mg/L of ammonia nitrogen in aquaculture water was selected as the reference target,the volume was 20 mL,and the wet weight of the adsorbent was 1.0 g.After 16 h,the removal rate was greater than or equal to 91%,and the concentration of ammonia nitrogen in the effluent was less than 0.5 mg/L,which met the primary discharge standard of surface water.The experiment of pH effect on adsorption was carried out,the results showed that it is good for adsorption that pH is larger than 9.At the meantime,the distribution coefficient of ammonia is greater than 98%,ammonia is the main component;the adsorption saturated gel can achieve good regeneration through 0.1 mol/L of sodium chloride.

关 键 词：复合凝胶 吸附 分布系数 氨氮去除率 

分 类 号：X712[环境科学与工程—环境工程]