新型TCAS树脂吸附水中三氯甲烷研究  

REMOVAL OF AQUEOUS CHLOROFORM BY A NOVEL TCAS-ADSORBED RESIN

作　　者：刘婷[1] 刘鸣达[1] 胡晓钧[2] 张品[3] 

机构地区：[1]沈阳农业大学土地与环境学院,辽宁沈阳110161 [2]沈阳大学污染环境的生态修复与资源化技术教育部重点实验室,辽宁沈阳110044 [3]中国科学院沈阳应用生态研究所,辽宁沈阳110016

出　　处：《水处理技术》2010年第4期67-70,共4页Technology of Water Treatment

基　　金：国家高技术发展计划(863)重大项目(2007AA06A405);辽宁省教育厅科学技术研究项目(2008T129)

摘　　要：通过静态吸附试验,研究一种由超分子受体化合物磺化硫杂杯芳烃(TCAS)与树脂结合的产物-新型TCAS树脂对水体中三氯甲烷的吸附去除性能。结果表明,对于25mL质量浓度为1mg·L-1的三氯甲烷污染水,投加0.5gTCAS树脂吸附40min后,去除率可达99%以上。TCAS树脂对三氯甲烷吸附的操作温度应控制在5～15℃左右为最佳。pH是影响TCAS树脂吸附效果的重要因素,在pH=6～8时去除效果较好。Ca2+和Mg2+背景阳离子的存在会加快TCAS树脂对三氯甲烷的吸附速率。在试验范围内,TCAS树脂对三氯甲烷吸附符合Freundlich方程。伪二级反应动力学方程能够较好地描述TCAS树脂对三氯甲烷的吸附过程。Through the static tests, the capacity of a new TCAS-adsorbed resin to remove of aqueous chloroform was investigated. This TCAS-adsorbed resin was made of a novel supramolecular compound named thiacalix[4]arenetetrasulfonate （TCAS） and anion exchange resin. The results indicated that the TCAS-adsorbed resin could effectively adsorb chloroform. The removal rate of chloroform in aqueous solution was up to 99% after 40 min when a 25 mL aqueous solution of chloroform （1.0 mg·L^-1） was adsorbed by 0.5 g TCAS-adsorbed resin.Ca^2＋ and Mg^2＋ accelerated the adsorption. The isothermal adsorption of TCAS-adsorbed resin for chloroform fitted Freundlich equation within the range of experimental concentration. The adsorption of chloroform by TCAS-adsorbed resin followed the pseudo second-order kinetic mode.

关 键 词：吸附 TCAS树脂 三氯甲烷 

分 类 号：TQ322[化学工程—合成树脂塑料工业] TQ424