Research on the adsorptive properties of organically modified bentonite vs polyacrylamide

doi:10.11894/1005-829x.2003.23.(11).37

Abstract

Abstract:

The removal effect of polyacrylamide(PAM)from oil wastewater by organically modified bentonite has been studied.The type of adsorption isotherm curves of PAM on the two kinds of modified bentonite by cetyltrim-ethylammonium bromide(CTMAB)accord with Langmuir type.The interlayer spacing of modified bentonite is an important factor which affects the adsorption capacity.The removal efficiency of the bentonite modified by7%single-cation reaches the value of more than90%.The saturation adsorption capacities of PAM on the bentonite modified by dual-cation increases with the alkyl-length of CTMAB increasing.

Key words: cetyltrimethylammonium bromide organically, modified bentonite, polyacrylamide

摘要：

研究了有机改性膨润土对石油废水中聚丙烯酰胺(PAM)的去除效果。实验结果表明:由溴化十六烷基三甲铵(CTMAB)阳离子改性的膨润土和双阳离子改性的膨润土对PAM的吸附等温线都符合Langmuir等温吸附曲线,改性膨润土的层间距的大小是影响饱和吸附量的一个重要因素,质量分数为7%的单阳离子改性膨润土对PAM的去除率可达到90%以上;双阳离子改性膨润土对PAM的饱和吸附容量随长碳链表面活性剂CTMAB的增加而增加。

关键词: 溴化十六烷基三甲铵, 有机改性膨润土, 聚丙烯酰胺

CLC Number:

TQ424.24

Fan Liping, Zhao Lin, Tan Xin, Liu Yingchun. Research on the adsorptive properties of organically modified bentonite vs polyacrylamide[J]. INDUSTRIAL WATER TREATMENT, 2003, 23(11): 37-40.

樊丽萍, 赵林, 谭欣, 刘应春. 有机改性膨润土对聚丙烯酰胺吸附性能的研究[J]. 工业水处理, 2003, 23(11): 37-40.

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