[Effects of surfactants on adsorption of methyl parathion by neutral alumina].
The sorption of methyl parathion by neutral alumina which was modified by ionic surfactants such as SDS, SDBS and CTMAB was studied. It showed that the adsorbability of alumina to methyl parathion were related to the type and concentration of surfactant and pH of the system. The adsorbabilities of alumina on three kinds of surfactants were different. When pH = 7, the adsorbance of SDS was the largest, but the adsorbance of CTMAB was the smallest. When pH = 4, the adsorbance of SDS or SDBS was increased, while the adsorbance of CTMAB was decreased. The adsorbability of alumina was strengthened, not weakened, by the cooperation of pollutant and anionic surfactant, while the sorption of methyl parathion by alumina with cationic surfactant was weakened. These features had the practical value when neutral alumina is used to remove more than one contaminants from wastewater.
Tang
Can
C
College of Resources and Environment, China Agricultural University, Beijing 100094, China. mengsy3219@sina.com.cn
Zeng
Qing-Ru
QR
Li
Guo-Xue
GX
Yang
Cheng-Jian
CJ
Liao
Bo-Han
BH
D000327:Adsorption; D000537:Aluminum Oxide / Q000737:chemistry*; D008743:Methyl Parathion / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry*
D013501:Surface-Active Agents; D008743:Methyl Parathion; D000537:Aluminum Oxide