Layer structured graphite oxide as a novel adsorbent for humic acid removal from aqueous solution

被引：181

作者：

Hartono, Tri ^{[1
]}

Wang, Shaobin ^{[1
]}

Ma, Qing ^{[2
]}

Zhu, Zhonghua ^{[2
]}

机构：

[1] Curtin Univ Technol, Dept Chem Engn, Perth, WA 6845, Australia

[2] Univ Queensland, Div Chem Engn, St Lucia, Qld 4072, Australia

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2009年 / 333卷 / 01期

关键词：

Graphite; Graphite oxide; Humic acid; Adsorption; ACTIVATED CARBON; FLY-ASH; ORGANIC-MATTER; WASTE MATERIAL; SUBSTANCES; ADSORPTION; COAGULATION; PERFORMANCE; SORPTION; BIOMASS;

D O I：

10.1016/j.jcis.2009.02.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Layer structured graphite oxide (GO) was prepared from graphite using the Hummers-Offeman method, characterised using N-2 adsorption, XRD, XPS, SEM(TEM), and FT-IR, and tested for humic acid (HA) adsorption in aqueous solution. XRD, XPS, and FT-IR measurements indicate the formation of layered structure with strong functional groups of GO. It is also found that the GO exhibits strong and much higher adsorption capacity of HA than graphite. The Maximum adsorption capacity of the GO from the Langmuir isotherm is 190 mg/g, higher than activated carbon. For the adsorption, several parameters will affect the adsorption such as solid loading and pH. HA adsorption will decrease with increasing pH and an optimum GO loading is required for maximum adsorption. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：114 / 119

页数：6

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