%0 Journal Article
%T The removal of heptachlor and heptachlor epoxide in trace level from aqueous solution by a novel triolein-embedded composite adsorbent<br>类脂复合吸附剂去除水中微量七氯和环氧七氯的研究
%A RU Ji
%A LIU Huijuan
%A QU Jiuhui
%A DAI Ruihua
%A <br>茹加
%A 刘会娟
%A 曲久辉
%A 代瑞华
%J 环境科学学报
%D 2006
%I 
%X The adsorption behavior of two POPs, heptachlor and heptachlor epoxide, on a novel triolein-embedded composite adsorbent (CA-T) was investigated. Results showed that CA-T seemed to be a promising adsorbent for removing lipophilic heptachlor and heptachlor epoxide in trace amounts from aqueous solutions. After adsorption for 48 h, the removal rates of heptachlor and heptachlor epoxide were 98.79% and 98.08%, respectively. The adsorption isotherms accorded with Freundlich equation. Kinetic data fitted well to the pseudo-second-order reaction model. The adsorption rate, equilibrium adsorption capacity and removal efficiency of heptachlor on CA-T were higher than that of heptachlor epoxide, which might be attributed to the stronger hydrophobicity of heptachlor. Higher removal rates and lower residual concentrations were achieved in CA-T system comparing with granular activated carbon (GAC) under the same operation conditions.
%K triolein
%K activated carbon
%K adsorption
%K persistent organic pollutants (POPs)
%K octanol-water partition coefficient (log K_ ow )
%K drinking water<br>三油酸甘油酯
%K 活性炭
%K 吸附
%K 持久性有机污染物
%K 辛醇-水分配系数
%K 饮用水
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=BD16717F4D08FC9A&yid=37904DC365DD7266&vid=96C778EE049EE47D&iid=708DD6B15D2464E8&sid=43E2C08889D1FABC&eid=ED018FBF5E47A8BD&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=2&reference_num=25