| 粘土-MMH体系对赤潮生物的絮凝作用机制研究 |
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| 引用本文： | 孙晓霞,宋秀贤,张波,俞志明.粘土-MMH体系对赤潮生物的絮凝作用机制研究[J].海洋科学,1999,23(2):46-49. |
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| 作者姓名： | 孙晓霞 宋秀贤 张波 俞志明 |
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| 作者单位： | 中国科学院海洋研究所,青岛,266071 |
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| 基金项目： | 国家自然科学基金!49406072号，国家自然科学基金!39790110号 |
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| 摘 要： | 根据粘土表面改性对其絮凝作用影响的理论模型，提出在粘土中引入ＭＭＨ（混合金属层状氢氧化物正电胶体）的改性方法，考察了ＭＭＨ浓度及ｐＨ值对絮凝作用的影响。结果表明，粘土中引和ＭＭＨ后，显著提高了对赤潮异弯藻（Ｈｅｔｅｒｏｓｉｇｍａａｋａｓｈｉｖｏ）和新月菱形藻（Ｎｉｔｚｃｈｉａｃｌｏｓｔｅｒｉｕｍ）的去除效率，二者的适宜配比为ＭＭＨ；粘土＝０．１ｇ：１ｇ，在此基础上，进一步研究了ＭＭＨ促进粘土絮凝作
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| 关 键 词： | 粘土 絮凝作用 赤潮生物 |
| 收稿时间： | 3/4/1998 12:00:00 AM |
| 修稿时间： | 1998/8/20 0:00:00 |
A STUDY ON THE COAGULATION OF CLAY-MMH SYSTEM WITH RED TIDE ORGANISMS |
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| SUN Xiaoxia,SONG Xiuxian,ZHANG Bo,YU Zhiming.A STUDY ON THE COAGULATION OF CLAY-MMH SYSTEM WITH RED TIDE ORGANISMS[J].Marine Sciences,1999,23(2):46-49. |
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| Authors: | SUN Xiaoxia SONG Xiuxian ZHANG Bo YU Zhiming |
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| Abstract: | According to theoretical model on effect of surface modification of clays on coagulation, the improved method adding MMH (Mixed Metal Layered Hydroxide) in clays is proposed. The impacts of MMH concentration and pH are examined. The results show that the removal rates of Helerosigma akashiwo and Nitzchia closterium increase markedly due to addition of MMH and MMH:Clay=0. 1 g: 1 g is thought to be a suitable proportion. The mechanism of MMH promoting the coagulation is studied and the removal rates of H. akashiwo show a positive linear relationship with surface potential of modified clay particles, R~2= 0. 86, which is in accord with the model put forward in the previous papers. |
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| Keywords: | MMH |
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