Clay surface modification and its coagulation of red tide organisms

查看全文 作　　者：Zhiming [1]Yu;Xiaoxia [1]Sun;Xiuxian [1]Song;Bo [1]Zhang 机构地区：[1]Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 出　　处：《Chinese Science Bulletin》索引1999年第44卷第7期,共4页 摘　　要：Surface modification of montmorillonite by means of Mg²⁺ insertion reaction has been studied and a positively charged montmorillonite has been prepared. The effects of preparation temperature and Mg²⁺ concentration on the positive charge property of the clay and on the clay coagulating Heterosigma akashiwo have been studied. The results showed that the modified clay enhanced the coagulation and the used amount decreased to 1/5—1/10 of the original. The removal rates of Heterosigma akashiwo were correlated positively with positive charge on the clay in accordance with theoretical model. 关 键 词：MONTMORILLONITE modification COAGULATION red TIDE organisms.