Chromium(VI) adsorption by brown coals

被引：35

作者：

Gode, F ^{[1
]}

Pehlivan, E

机构：

[1] Suleyman Demirel Univ, Dept Chem, TR-32260 Isparta, Turkey

[2] Selcuk Univ, Dept Chem Engn, Konya, Turkey

来源：

ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS | 2006年 / 28卷 / 05期

关键词：

brown coal; adsorption; chromium; Langmuir's;

D O I：

10.1080/009083190927156

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 ability of brown coals (leonardites) to remove chromium(VI) from aqueous solutions was studied as a function of pH, contact time, adsorbent nature, and concentration of metal solutions. The adsorption of Cr(VI) was higher between pH 2.0 and 3.0 for all brown coals and maximum sorption was observed at pH 3.0. The Langmuir adsorption isotherm was used to describe observed sorption phenomena, and the constants were evaluated. The maximum adsorption capacity of 0.92 mmol of Cr(VI)/g for YK, 0.98 mmol of Cr(VI)/g for KK was found from experimental data. KK was the best among the selected adsorbents for the sorption of Cr(VI) at pH 3 and the sorption was 81% out of 100 ppm Cr(VI) after 120 min of stirring.

引用

页码：447 / 457

页数：11

共 21 条

[1] Preconcentration and speciation of chromium in waters using solid-phase extraction and atomic absorption spectrometry [J].

Adriá-Cerezo, DM ;

Llobat-Estellés, M ;

Maurí-Aucejo, AR .

TALANTA, 2000, 51 (03) :531-536

[2] A review of potentially low-cost sorbents for heavy metals [J].

Bailey, SE ;

Olin, TJ ;

Bricka, RM ;

Adrian, DD .

WATER RESEARCH, 1999, 33 (11) :2469-2479

[3] Comparative study of adsorption properties of Turkish fly ashes II. The case of chromium (VI) and cadmium (II) [J].

Bayat, B .

JOURNAL OF HAZARDOUS MATERIALS, 2002, 95 (03) :275-290

[4] Metal removal from wastewater using peat [J].

Brown, PA ;

Gill, SA ;

Allen, SJ .

WATER RESEARCH, 2000, 34 (16) :3907-3916

[5] LIQUID MEMBRANE MULTIPLE EMULSION PROCESS OF CHROMIUM(VI) SEPARATION FROM WASTE-WATERS [J].

CHAKRAVARTI, AK ;

CHOWDHURY, AK ;

CHOWDHURY, SB ;

CHAKRABARTY, S ;

CHAKRABARTY, T ;

MUKHERJEE, DC .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1995, 103 (1-2) :59-71

[6] Removal of toxic cations and Cr(Vi) from aqueous solution by hazelnut shell [J].

Cimino, G ;

Passerini, A ;

Toscano, G .

WATER RESEARCH, 2000, 34 (11) :2955-2962

[7] Selective adsorption of chromium(VI) in industrial wastewater using low-cost abundantly available adsorbents [J].

Dakiky, M ;

Khamis, M ;

Manassra, A ;

Mer'eb, M .

ADVANCES IN ENVIRONMENTAL RESEARCH, 2002, 6 (04) :533-540

[8] Humic acid derivatives (HAD) from low rank Turkish brown coals [J].

Demirbas, A .

ENERGY SOURCES, 2002, 24 (02) :127-133

[9]

DEMIRBAS A, 2000, REV PROCESS CHEM ENG, V3, P175

[10] A comparative study of two chelating ion-exchange resins for the removal of chromium(III) from aqueous solution [J].

Gode, F ;

Pehlivan, E .

JOURNAL OF HAZARDOUS MATERIALS, 2003, 100 (1-3) :231-243

← 1 2 3 →