改良法合成施氏矿物去除废水中洛克沙胂的研究  

Removal of Roxarsone From Wastewater by Schwertmannite Prepared With Modified Synthesis Method

作　　者：臧淑艳[1] 李波[1] 邱立春 袁俊文 刘静祎 周华锋[1] ZANG Shu-yan;LI Bo;QIU Li-chun;YUAN Jun-wen;LIU Jing-yi;ZHOU Hua-feng(Department of Chemistry,School of Science,Shenyang Un iversity of Chemical Technology,Shenyang 110142,China;Ruifbng Environmental Protection Technology Consulting Service Co.,Ltd.,Yingkou 115000,China)

机构地区：[1]沈阳化工大学理学院化学系,沈阳110142 [2]瑞丰环保技术咨询服务有限公司,营口115000

出　　处：《当代化工》2022年第5期1020-1024,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金项目(项目编号:41773136);基础研究项目(项目编号:XXLJ2019007)。

摘　　要：羟基硫酸铁矿物(简称施氏矿物)因其特殊的管状隧道结构表现出很强的吸附性能,并因其成本低而被广泛应用于废水中砷的去除。借助扫描电镜(SEM)、傅里叶红外光谱(FTIR)、X射线衍射(XRD)表征化学法合成的施氏矿物,同时探究其在不同条件下对有机胂ROX吸附性能的影响。结果表明:该方法合成的物质是施氏矿物,该吸附试验的动力学可用拟二级动力学描述。当洛克沙胂质量浓度为10mg·L^(-1),溶液pH为6~7、吸附剂质量浓度为1 g·L^(-1)、温度为25℃时去除效果最好,此时,吸附平衡时间为16 h,ROX的去除率达到99.79%。Because of its special tubular tunnel structure, hydroxyl ferric sulfate minerals(schwertmannite) have strong adsorption performance and low cost, so they are widely used in the removal of arsenic from wastewater.Scanning electron microscopy(SEM), Fourier transform infrared spectroscopy(FTIR) and X-ray diffraction(XRD)were used to characterize the schwertmannite synthesized by chemical method, and the influence of schwertmannite on the adsorption properties of organoarsenine roxarsone under different conditions was explored.The results showed that the material synthesized by this method was schwertmannite, the adsorption kinetics can be described by pseudo second order kinetics. When roxarsone mass concentration was 10 mg·L^(-1), solution pH was 6~7, adsorbents mass concentration was 1 g·L^(-1), and temperature was 25 ℃, the best removal effect was achieved. At this time, the adsorption equilibrium time was 16 h, and the removal rate of roxarsone reached 99.79%.

关 键 词：施氏矿物 ROX 吸附 动力学 

分 类 号：TQ013[化学工程]