粉煤灰两步水热法制备人工沸石  

Preparation of Artificial Zeolite from Fly Ash by Two-step Hydrothermal Method

作　　者：王海龙[1] 徐中慧[1,2,3] 吴丹丹[1] 谭钦文[1] 谢羽佳[1] 李春林[1] 

机构地区：[1]西南科技大学固体废物处理与资源化教育部重点实验室,四川绵阳621010 [2]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400044 [3]重庆智伦电镀有限公司,重庆402372

出　　处：《化工环保》2013年第3期272-275,共4页Environmental Protection of Chemical Industry

基　　金：煤矿灾害动力学与控制国家重点实验室访问学者基金资助项目(12zs0104);西南科技大学博士基金资助项目(11zx7115);"核废物与环境安全"国防重点学科实验室开放基金资助项目(12zxnp03)

摘　　要：以粉煤灰为原料,采用两步水热法制备人工沸石。SEM、XRD、X射线荧光光谱分析结果表明:制得的人工沸石纯度较高,主要为Na-A型沸石和少量13X型沸石,主要化学成分为SiO2和Al2O3。说明采用两步法制备人工沸石克服了传统水热法杂质含量高的缺陷。采用人工沸石处理初始Mn2+质量浓度为50.00 mg/L的模拟含锰废水,吸附125 min后,Mn2+去除率达98.19%,模拟废水中剩余Mn2+质量浓度为0.90 mg/L。Artificial zeolite was prepared by two-step hydrothermal method using fly ash as raw material.The analysis results of SEM,XRD and X-ray fluorescence spectrometry show that：The artificial zeolite product is pure,its structure is mainly Na-A type and a few 13X type,its major chemical compositions are SiO2 and Al2O3.This indicates that the two-step hydrothermal method can overcome the shortcomings of traditional hydrothermal method with lots of impurities.The simulated wastewater with 50.00 mg/L of Mn2＋ mass concentration was treated with the artificial zeolite product.After 125 min of adsorption,the Mn2＋ removal rate is 98.19% and the mass concentration of Mn2＋in the treated wastewater is 0.90 mg/L.

关 键 词：粉煤灰 两步水热法 人工沸石 吸附剂 废水处理 

分 类 号：TD985[矿业工程—选矿]