天然沸石改性方法及改性条件的研究  

Research on the Modification Method and Modification Conditions of Natural Zeolite

作　　者：霍俊梅[1] Huo Junmei(Tangshan Iron and Steel Group Co.,Ltd.,Tangshan Branch of HBIS Co.,Ltd.,Tangshan 063016,China)

机构地区：[1]唐山钢铁集团有限责任公司,河钢股份有限公司唐山分公司,河北唐山063016

出　　处：《山东化工》2024年第5期41-42,共2页Shandong Chemical Industry

摘　　要：通过对预处理后的天然斜发沸石进行HCl、NaCl、NH_(4)Cl、H_(2)SO_(4)、HDTMA、CH_(3)COOH、NaOH 7种不同方法改性,寻求最佳的改性方法,制得不同类型的改性沸石。实验结果表明,HDTMA改性后的沸石对重金属Cd^(2+)的去除率最高,因此选用HDTMA作为改性剂制备改性沸石,同时研究了HDTMA改性剂溶液的浓度、浸泡时间、体积质量比、焙烧温度等影响改性沸石品质的潜在因素。得出最佳的改性沸石吸附剂的制备条件是:HDTMA溶液的质量浓度5 g/L,浸泡时间12 h,体积质量比10(mL∶g),最佳焙烧温度500℃。Based on natural clinoptilolite after pretreatment then used of hydrochloric acid(HCl),sodium chloride(NaCl),ammonium chloride(NH_(4)Cl),sulfuric acid(H_(2)SO_(4)),hexadecyltrimethylammonium bromide(HDTMA),acetic acid(CH_(3)COOH),sodium hydroxide(NaOH)for 7 different modification methods,to seek out the best modified method,obtained by the different types of modified zeolite.The experimental results show that with hexadecyltrimethylammonium bromide(HDTMA)modified zeolite is the highest removal rate of heavy metal Cd^(2+),so choose HDTMA as modified agents to prepare modified zeolite and HDTMA modifier solution concentration,zeolite immersion time,solid-liquid ratio(modifier solution volume and the quality of zeolite),calcination temperature influence the quality of the modified zeolite potential factors.Obtains the best modified zeolite adsorbent preparation conditions is:HDTMA solution concentration of 5 g/L,zeolite immersion time for 12 h,HDTMA solid-liquid ratio is 10(mL∶g),the optimum calcination temperature of 500℃.

关 键 词：环境工程学 天然沸石 改性方法 改性条件 重金属镉 

分 类 号：TQ424.2[化学工程] X703.1[环境科学与工程—环境工程]