%0 Journal Article
%T Separation and Purification of Al13 by Chemical Precipitation and Metathesis<br>化学沉淀分离-置换法提纯Al13的工艺研究
%A LI Guo-hong
%A SHI Bao-you
%A WANG Dong-sheng
%A CUI Ya-li
%A <br>李国红
%A 石宝友
%A 王东升
%A 崔亚莉
%J 环境科学
%D 2007
%I 
%X PACls with different concentrations were prepared by adding sodium carbonate powder into AlCl13 solution. Medium concentration and high Al13 content of PACl was chosen to carry out Al13 separation processes. The influences of SO4/Al molar ratio and the initial total Al concentration on the precipitation reactions of sulfate with different Al species were investigated. The factors influencing the metathesis reaction between solid Al13-SO4 and Ba(NO3)2 were evaluated. Results showed that high Al13 PACl could be obtained at the medium high concentration range of 0.4 - 0.6 mol/L, the optimum SO4/Al ratio was 0.6:1 for precipitation- separation of Al13, Al13 -SO4 precipitates were mostly consisted of tetrahedral crystals. During the metathesis reaction, Ba/SO4 molar ratio of 1:1 is the optimal value. Small range temperature variation and ultrasonic action had no marked influence on metathesis reaction rate and final Al13 concentration. Higher initial Ba(NO3)2 concentration could produce higher concentration Al13 accordingly. The purity of Al13 solution could be reached to 92.1% statistically.
%K polyaluminum chloride
%K Al13
%K separation<br>聚合氯化铝
%K Al13
%K 分离提纯
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=A4986AA56C5718EDE7E1B0D16198E6E8&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=0B39A22176CE99FB&sid=EA64BD0B2FF6E786&eid=FA88DCCE84EA0A56&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=9