%0 Journal Article
%T Sorption characteristics of surfactant onto bentonite using microwave irradiation<br>微波作用下表面活性剂在膨润土上的吸附行为特征
%A Li Ji-Wu
%A Zhu Li-Zhong
%A Cai Wei-Jian
%A <br>Li JW
%A Zhu LZ
%A Cai WJ
%J 环境科学
%D 2007
%I 
%X The sorption curve of cetylpyridinium chloride (CPC) onto bentonite by microwave irradiation was studied. The effects of microwave reaction time and CPC concentration on interlayer spacing and organic carbon content of organobentonite were tested, respectively. Thermodynamics and kinetics of sorption of CPC onto bentonite by microwave irradiation were studied. The saturated adsorption amount of CPC to bentonite with microwave irradiation time from 90 s to 120 s was equal to that of conventional sorption, up to 0.001 63 mol x g(-1). On the condition of microwave irradiation time with 2 min and concentration of CPC with 1.20 mmol x L(-1), the interlayer spacing was attained to 2.44 nm at the best, and organic carbon content was 23.45%. The atomic force microscopy (AFM) showed that the typical layer morphological structure of bentonite was not devastated by microwave. Contrast to conventional sorption, sorption of CPC onto bentonite was greatly influenced by microwave, velocity constant of sorption reaction was increased 107.6 times, and free energy of sorption reaction system was decreased.
%K microwave
%K bentonite
%K sorption
%K surfactant
%K atomic force microscopy<br>微波
%K 膨润土
%K 吸附
%K 表面活性剂
%K 原子力显微镜
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=BC85E858628321E19F815A3DA0B899E0&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=708DD6B15D2464E8&sid=E148A9F67796031C&eid=E31144666701B795&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=14