Removal of ammonium ions from aqueous solutions with coal-based activated carbons modified by oxidation

被引：69

作者：

Vassileva, P. ^{[1
]}

Tzvetkova, P. ^{[1
]}

Nickolov, R. ^{[1
]}

机构：

[1] Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, Bulgaria

来源：

FUEL | 2009年 / 88卷 / 02期

关键词：

Ammonium removal; Oxidized activated carbon; Adsorption equilibrium; ADSORPTION; VAPOR; NH3;

D O I：

10.1016/j.fuel.2008.08.016

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The main purpose of this work is to study the possibilities for removal of ammonium ions from aqueous solutions by the two coal-based activated carbons (one obtained from Bulgarian lignite from the Chukurovo deposit, and the second, available as commercial product) and their oxidized modifications. The porous texture and surface chemistry of the adsorbents were characterized. Adsorption of NH4+ ions was investigated using solutions with different concentrations in the range 35-280 mg l(-1) in a Static mode. Equilibrium modeling data were fitted to linear Langmuir's and Freundlich's equations and maximum adsorption capacities were calculated. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：387 / 390

页数：4

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