Na_2CO_3活化粉煤灰合成沸石及去除Cu^(2+)性能  

Synthesis zeolite from Na_2CO_3 activated flyash for copper ions removal

作　　者：曹月坤[1] 陈文艺[1] 邓慧[1] 白云[1] 张志强[1] 

机构地区：[1]辽宁石油化工大学化学化工环境学部,辽宁抚顺113001

出　　处：《应用化工》2015年第7期1303-1306,共4页Applied Chemical Industry

摘　　要：以粉煤灰为基质材料,Na2CO3为碱性活化试剂,比较了高温熔融法、水热法和加压水热法合成沸石对铜离子的去除效果。研究了水热温度及压力、Na2CO3浓度、液固比、水热时间等因素对Na2CO3碱性活化粉煤灰的影响。结果表明,加压水热法合成的沸石对铜离子的吸附效果最好,温度90℃,自生压0.038 MPa,Na2CO32.0 mol/L,液固比10∶1、水热时间2 h时合成的沸石对初始浓度200 mg/L的铜离子的去除率可达92%,XRD表征说明合成的沸石为Na P型。Zeolites were synthesized through high temperature melting method,hydrothermal method and hydrothermal assisted pressure method based on fly ash as a matrix material with Na2CO3 as alkaline activating reagent,and their removal effect of copper ions were compared. Influence of hydrothermal temperature,autogenous pressure,Na2CO3 concentration,liquid to solid ratio,hydrothermal time and other factors on Na2CO3 alkaline activation of fly ash were investigated. Results showed that the hydrothermal assisted pressure synthesis of zeolite adsorption of copper ions was the best,removal rate for 200 mg / L copper ion reached 92% when temperature was 90 ℃,self-generated pressure was 0. 038 MPa,Na2CO3was2. 0 mol / L,liquid-solid ratio was 10∶ 1 and hydrothermal time was 2 h. XRD and SEM description suggested that synthesic zeolite was Na P.

关 键 词：粉煤灰 Na2CO3活化 加压水热法 沸石 

分 类 号：TQ171.4[化学工程—玻璃工业]