抚顺石油学院学报2001，Vol.21Issue(1)：76-79,4.
HDTMA改性沸石对水中铬酸盐的吸附
Adsorption of Chromate Onto HDTMA-Modified Zeolite in Water
陈芳艳 1马延文 1唐玉斌2
作者信息
- 1. 抚顺石油学院环境工程研究所,
- 2. 华东理工大学资 源与环境学院
- 折叠
摘要
Abstract
The zeolite(Ca-type) was modified by hexadecyltrimethylammonium(HDTMA) .The results show that the optimum modifying temperature is 30 ℃, the optimum H D TMA's concentration is 1.5%.In addition, the effect of pH，HDTMA-zeolite amoun t and shaking time on the adsorption were investigated. The adsorption isotherm and the mechanism for the adsorption were investigated respectively. The results indicate d that pH has no influences on the adsorption, and the adsorption efficiency inc r eases with the extension of shaking time and the addition of HDTMA-zeolite amo u nt. The adsorption isotherm appears in double S shape. The mechanism for the ads orpt ion is: ion exchange and the formation of precipitation of HDTMA-Cr (VI) complex salt perform the adsorption.关键词
HDTMA改性沸石/阳离子表面活性剂/离子交换/吸附机 理分类
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陈芳艳,马延文,唐玉斌..HDTMA改性沸石对水中铬酸盐的吸附[J].抚顺石油学院学报,2001,21(1):76-79,4.
