Adsorption of naphthalene onto the carbon adsorbent from waste ion exchange resin: Equilibrium and kinetic characteristics

被引：82

作者：

Long, Chao ^{[1
,2
]}

Lu, JunDong ^{[1
]}

Li, Aimin ^{[1
,2
]}

Hu, Dabo ^{[2
]}

Liu, Fuqiang ^{[1
,2
]}

Zhang, Quanxing ^{[1
,2
]}

机构：

[1] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210038, Peoples R China

[2] Engn Technol Res Ctr Organ Tox Subst Control & Re, Nanjing 210038, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 150卷 / 03期

基金：

中国国家自然科学基金;

关键词：

naphthalene; waste ion exchange resin; adsorption; Polanyi theory; kinetics; POLYCYCLIC AROMATIC-HYDROCARBONS; ACTIVATED CARBONS; SORPTION; PENTACHLOROPHENOL; DEGRADATION; WATER;

D O I：

10.1016/j.jhazmat.2007.05.015

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Polycyclic aromatic hydrocarbons (PAHs) are widespread environmental pollutants that can result in serious health problems and genetic defects in humans. In this research, a spherical microporous carbon adsorbent (CR-1) had been obtained by carbonization and activation of the waste polysulfonated cation exchange resin. Naphthalene was adopted as a model compound to examine the adsorption effectiveness for removing PAHs from the aqueous solution by CR-1. Nonlinear isotherms models, i.e., Freundlich, Langmuir, Brunauer-Emmett-Teller and Polanyi-Dubinin-Manes models were tested to fit experimental data. The adsorption equilibrium data of naphthalene on CR-1 was fitted well by the Polanyi-Dubinin-Manes model. Through both isotherm modeling and constructing "characteristic curve", Polanyi theory was useful to describe the adsorption process of naphthalene by CR-1. providing evidence that a micropore filling phenomenon is involved. In addition, among the tested kinetic models in this study (e.g., pseudo-first-order and pseudo-second-order equations), the pseudo-first-order equation successfully predicted the kinetic adsorption process. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：656 / 661

页数：6

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