改性沸石对废水中Cu^2＋、Cr^3＋的去除作用研究  

Research on the removing effect of modified clinoptilolite on Cu^(2+) and Cr^(3+) from wastewater

作　　者：张义婕 司志华 胡晓静[1] 石玉坤[1] 朱宝林[1] 郑晓广[1] 黄唯平[1] 

机构地区：[1]南开大学化学学院、金属及分子基材料化学天津市重点实验室,天津300071 [2]山东东昌精细化工科技有限公司,山东东营257091

出　　处：《工业水处理》2014年第12期42-45,共4页Industrial Water Treatment

基　　金：国家自然科学基金项目(21373120,21071086)

摘　　要：用Na OH碱熔-水热法处理得到的改性斜发沸石作为吸附交换剂,对模拟废水中以Cu2+、Cr3+为代表的重金属离子进行吸附处理。研究了不同吸附时间、投加量以及初始浓度条件下,改性斜发沸石对Cu2+、Cr3+的去除效果。实验结果表明:改性沸石与水样中Cu2+、Cr3+的质量比分别为18.75∶1、13.33∶1时,对Cu2+、Cr3+的去除率分别达88.0%、87.4%,且为快速吸附平衡过程。此外,用Na Cl溶液和Na Cl溶液加氨水对吸附Cu2+饱和的改性沸石进行再生实验,再生率较高,改性斜发沸石可以多次重复利用。The modified clinoptilolite,which was obtained by NaOH alkali fusion-hydrothermal treatment process, has been used as an adsorption exchanger. Adsorption treatment of heavy metal ions, represented by Cu^2＋,and Cr^3＋in simulated wastewater is conducted. Under different conditions,such as adsorption time, dosages and initial concentration,the removing effects of modified clinoptilolite on Cu^2＋and Cr^3＋from water samples are studied. The experimental results show that the mass ratio of modified clinoptilolite and Cu^2＋,Cr^3＋in water samples is 18.75∶1 and 13.33∶1,respectively,the Cu^2＋and Cr^3＋removing rates are 88.0%and 87.4%,respectively. It is a rapid adsorption equilibrium process. In addition,the regeneration experiment on modified chinoptilolite,which was saturated with Cu^2＋by sodium chloride solution and sodium chloride solution＋ammonia ,has been accomplished. The regenerating rate is pretty high and modified clinoptilolite can be used repeatedly many times.

关 键 词：改性沸石 重金属离子 吸附 

分 类 号：X703[环境科学与工程—环境工程]