稀土吸附剂处理含铬微污染水研究  

REMOVAL OF CHROME IN SLIGHTLY POLLUTED WATER BY RARE EARTH ADSORBENT

作　　者：李彬[1] 宁平[1] 金建琼 张振龙 

机构地区：[1]昆明理工大学环境科学与工程学院,云南昆明650093 [2]云南环保产业开发中心,云南昆明650021

出　　处：《水处理技术》2006年第4期43-45,52,共4页Technology of Water Treatment

摘　　要：本文采用以分子筛为载体、负载镧制成复合吸附剂处理微污染水体中的铬(VI)。结果表明:研制的稀土吸附剂适于处理弱酸性废水,稀土吸附剂最大静态吸附容量达到2.1651mg/g,升高温度不利于吸附除铬。在含铬浓度为12m g/L、pH值4～6、吸附剂投加量20mg/L、水力停留时间为30min条件下,铬的去除率达99%以上,且出水pH在6～9之间。A new adsorbent with lanthanum（Ⅲ）-loaded molecular sieve was developed to remove chromium（Ⅳ） in slightly polluted water. The resu;t showed that the rare earth elements adsorbent was suitable for purifying weak acid wastewater. The maximum Capacity of the adsorbent was 2.1651 mg/g at static state, and as temperature went up, the capacity went down quickly. Under the conditions of the solution with 12mg/L chrome, pH within 4-6, dosing the adsorbent of 20mg/L and HRT 30min, chrome removal rate could reach to over 99%, while pH of the effluent varied within 6.0-9.0.

关 键 词：稀土 氯化镧 吸附剂 除铬 吸附 

分 类 号：X703.5[环境科学与工程—环境工程]