Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid
	Jia, Chengxia ; You, Chun ; Pan, Gang
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2010
卷号	22 期号:3 页码:355-361
关键词	perfluorooctane sulfonate sorption desorption temperature humic acid
中文摘要	Sorption and desorption of perfluorooctane sulfonate (PFOS) on humic acid at different temperatures were studied. It was found that the sorption process could be modeled with power kinetic equation very well, suggesting that diffusion predominated the sorption of PFOS on the humic acid. The sorption capacity was doubled when the temperature increased from 5 to 35 degrees C, and thermodynamics parameters Delta G(0) was calculated to be -7.11 to -5.04 kJ/mol, Delta H(0) was 14.2 kJ/mol, and Delta S(0) was 69.5 J/(mol.K), indicating that the sorption was a spontaneous, endothermic, and entropy driven process. Desorption hysteresis occurred at all studied temperatures which suggested that humic acid may be an important sink of PFOS in the environment.
WOS记录号	WOS:000275883400005
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/21230]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Jia, Chengxia,You, Chun,Pan, Gang. Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2010,22(3):355-361.
APA	Jia, Chengxia,You, Chun,&Pan, Gang.(2010).Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,22(3),355-361.
MLA	Jia, Chengxia,et al."Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 22.3(2010):355-361.