改性硅藻土对水中DDTs的吸附机理

谭凌智; 祁士华; 张家泉; 张小辉; 柯艳萍; 于佳; 陈静; 严春杰

doi:10.3799/dqkx.2012.071

Volume 37 Issue 3

May 2012

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Article Navigation > Earth Science > 2012 > 37(3): 621-626

TAN Ling-zhi, QI Shi-hua, ZHANG Jia-quan, Zhang Xiao-hui, KE Yan-ping, YU Jia, CHEN Jing, YAN Chun-jie, 2012. Removal of DDTs from Water by Modified Diatomite. Earth Science, 37(3): 621-626. doi: 10.3799/dqkx.2012.071

Citation:

TAN Ling-zhi, QI Shi-hua, ZHANG Jia-quan, Zhang Xiao-hui, KE Yan-ping, YU Jia, CHEN Jing, YAN Chun-jie, 2012. Removal of DDTs from Water by Modified Diatomite. Earth Science, 37(3): 621-626. doi: 10.3799/dqkx.2012.071

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Removal of DDTs from Water by Modified Diatomite

doi: 10.3799/dqkx.2012.071

1.
School of Environmental Studies and Key Laboratory of Biogeology and Environmental Geology of Ministry of Education, China University of Geosciences, Wuhan 430074, China
2.
Yangtze Valley Water Environmental Monitoring Center, Wuhan 430010, China
3.
Engineering Research Center of Nano-Geo Materials of Ministry of Education, China University of Geosciences, Wuhan 430074, China

Received Date: 2011-07-23
Available Online: 2021-11-09
Publish Date: 2012-05-01

Abstract

Abstract

This study investigates the adsorption behavior of organochlorine pesticides DDTs (p, p'-DDT, p, p'-DDE and p, p'-DDD) onto organo-diatomite (OD), which was modified by Cetyltrimethylammonium Bromide (CTMAB). The strengthen mechanisms and optimization design of the adsorption process are also discussed. The results show that the cationic surfactant could change the Zeta potential, BET surface area and hydrophobic characteristics of diatomite, which lead to the better adsorption efficiency of DDTs. The adsorption efficiency of the three DDTs onto OD follows the order of p, p'-DDT > p, p'-DDE > p, p'-DDD. According to the value of R², it can be concluded that the Redlich-Peterson model fit best for the adsorption data.
- diatomite,
- organic modification,
- adsorption,
- organochlorine pesticides

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References(22)

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