Adsorption of phenanthrene by quaternary ammonium surfactant modified peat and the mechanism involved

被引：9
|
作者：
Zhou, Y. B. [1 ]
Chen, L. [1 ]
Wang, X. Q. [1 ]
Xu, Y. X. [1 ]
Lu, J. [1 ]
机构：
[1] E China Univ Sci & Technol, Coll Resource & Environm Engn, Shanghai 200237, Peoples R China
来源：
WATER SCIENCE AND TECHNOLOGY | 2012年 / 66卷 / 04期
基金：
高等学校博士学科点专项科研基金; 中国博士后科学基金;
关键词：
adsorption; biosorbent; modification; PAHs; surfactant; POLYCYCLIC AROMATIC-HYDROCARBONS; SORPTION; REMOVAL; PAHS;
D O I：
10.2166/wst.2012.253
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Removal of phenanthrene (PHE) from aqueous solution by adsorption onto quaternary ammonium surfactant modified peat was studied. The results show that surfactant modification enhanced the PHE adsorption capacity of peat. Low temperature and neutral pH favored PHE adsorption. Peat modified with long carbon chain surfactant performed better than peat modified with short carbon chain surfactant. The magnitude of PHE adsorption capacity followed the order of MP-HPB>MP-HTAB>MP-TBAB>RP, ranged from 924 to 1,228 mu g g(-1). A negative trend between adsorption capacity (y) and (O+N)/C ratio of biosorbent (x) was observed (y = -1,369.6x + 2,176), which confirmed the negative effect of polarity on polycyclic aromatic hydrocarbon (PAH) removal. The study provides a guide to modify raw materials to enhance adsorption of hydrophobic organics.
引用
收藏
页码：810 / 815
页数：6
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