有机沸石对水中BTEX及铬酸根离子的吸附  

ADSORPTION BEHAVIOR OF ORGANO-ZEOLITE FOR BTEX AND CHROMATE IN WATER

作　　者：刘莺[1] 刘学良[1] 王俊德[1] 

机构地区：[1]中国科学院大连化学物理研究所,大连116012

出　　处：《环境化学》2003年第4期373-376,共4页Environmental Chemistry

基　　金：中国科学院出国留学人员启动基金;大连市回国留学人员科研基金资助

摘　　要：以天然沸石作为对比物 ,考察了有机沸石对水中BTEX (苯、甲苯、乙苯、二甲苯 )及铬酸根离子的吸附性能 .结果表明 :有机沸石对水中BTEX和铬酸根离子的吸附性能较天然沸石有了很大提高 ,在低质量浓度范围 ( 0— 0 2 5g·l- 1 )内呈现良好的线性关系 .对铬酸根离子的吸附符合Langmuir吸附模型 ,1 5℃时的饱和吸附容量为 1 5 97g·kg- 1 .The adsorption behavior of benzene/toluene/ethylbenzene/xylene(BTEX) and chromate to organo zeolite in water was examined and compared to that of natural zeolite.The adsorption curves of organo zeolite for BTEX were well linear in range of 0 g·l -1 to 0 25 g·l -1 .The adsorption isotherm for chromate was accorded with Langmuir equation.The saturation adsorption capacity of organo zeolite to chromate was 1 597 g·kg -1 .Both adsorption quantities of organo zeolite to BTEX and chromate were greatly increased in comparison with that of natural zeolite.

关 键 词：有机沸石 水 BTEX 铬酸根离子 吸附 处理 

分 类 号：O647.3[理学—物理化学]