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本文研究了产自我国江苏吴县的高岭土对我国主要赤潮生物种的絮凝作用。首次发现该高岭土的絮凝作用远远大于蒙脱土,是一种去除赤潮生物更有效的粘土种类。实验和理论计算证明该高岭土的主要成份是埃洛石或变埃洛石,其对赤潮生物细胞的吸引作用大于蒙脱土,故具有较强的絮凝能力。本文还考察了溶液pH、高岭土酸改性等对絮凝作用的影响,并与蒙脱土体系相比较,从理论上做了分析和解释,为其实际应用奠定了基础。
In this paper, the flocculation of kaolins originating from Wuxian County, Jiangsu Province, China on the major red tide biotic species in China was studied. It is the first time to find that the flocculation effect of kaolin is much greater than that of montmorillonite, which is a more effective clay species for removing red tide organisms. Experiments and theoretical calculations show that the main component of kaolin is halloysite or halloysite, whose attraction to red tide biological cells is greater than that of montmorillonite, so it has strong flocculation ability. The effect of solution pH and kaolinite acid modification on flocculation was also investigated in this paper. Compared with the montmorillonite system, the theoretical analysis and interpretation were made, which laid the foundation for its practical application.