Activated carbon from bamboo waste modified with iron and its application in the study of the adsorption of arsenite and arsenate

被引：16

作者：

Moreno-Pirajan, Juan C. ^{[1
]}

Giraldo, Liliana ^{[2
]}

机构：

[1] Univ Los Andes, Fac Sci, Dept Chem, Res Grp Porous Solids & Calorimetry, Bogota 111711, Colombia

[2] Univ Nacl Colombia, Dept Chem, Bogota 111711, Colombia

来源：

CENTRAL EUROPEAN JOURNAL OF CHEMISTRY | 2013年 / 11卷 / 02期

关键词：

Activated carbon; Bamboo waste; Isotherms; Freundlich; Langmuir; AQUEOUS-SOLUTIONS; HEAVY-METALS; BONE CHAR; ZINC IONS; SORPTION; REMOVAL; CADMIUM; COPPER; EQUILIBRIUM; POLLUTANTS;

D O I：

10.2478/s11532-012-0138-7

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Activated carbon obtained from bamboo waste was synthesised and modified with iron (BAC-Fe) and used for the removal of arsenic from aqueous solutions. Two different adsorption models were used for analysing the data. The adsorption capacities were determined for BAC-arsenite, BAC-Fe-arsenite, BAC-arsenate and BAC-Fe-arsenate, with a qmax (A mu g g(-1)) of 14.89, 19.19, 22.32 and 27.32 respectively. Adsorption capacity varied as a function of pH and modifications to the sorbent. Adsorption isotherms from an aqueous solution of arsenite and arsenates on activated carbons were determined. These adsorption isotherms were consistent with the Langmuir and Freundlich adsorption models. Adsorption kinetics followed a pseudo-first order rate equation, as did the kinetics for BAC-Fe-arsenite and BAC-Fe-arsenate adsorption.

引用

页码：160 / 170

页数：11

共 29 条

[1] Removal of heavy metals from waste waters by natural and Na-exchanged bentonites [J].

Alvarez-Ayuso, E ;

García-Sánchez, A .

CLAYS AND CLAY MINERALS, 2003, 51 (05) :475-480

[2] Enhancement of copper and cadmium adsorption on kaolin by the presence of humic acids [J].

Arias, M ;

Barral, MT ;

Mejuto, JC .

CHEMOSPHERE, 2002, 48 (10) :1081-1088

[3] ROLE OF BACTERIAL EXTRACELLULAR POLYMERS IN METAL UPTAKE IN PURE BACTERIAL CULTURE AND ACTIVATED-SLUDGE .1. EFFECTS OF METAL CONCENTRATION [J].

BROWN, MJ ;

LESTER, JN .

WATER RESEARCH, 1982, 16 (11) :1539-1548

[4] Sorption of cadmium, copper, and zinc ions onto bone char using Crank diffusion model [J].

Choy, KKH ;

McKay, G .

CHEMOSPHERE, 2005, 60 (08) :1141-1150

[5] Single and competitive adsorption of Cd and Zn onto a granular activated carbon [J].

Gabaldon, C ;

Marzal, P ;

Ferrer, J ;

Seco, A .

WATER RESEARCH, 1996, 30 (12) :3050-3060

[6] Simultaneous sorption of Cd, Cu, Ni, Zn, Pb, and Cr on soils treated with sewage sludge supernatant [J].

Gao, SA ;

Walker, WJ ;

Dahlgren, RA ;

Bold, J .

WATER AIR AND SOIL POLLUTION, 1997, 93 (1-4) :331-345

[7] Pore size determination in modified micro- and mesoporous materials.: Pitfalls and limitations in gas adsorption data analysis [J].

Groen, JC ;

Peffer, LAA ;

Pérez-Ramírez, J .

MICROPOROUS AND MESOPOROUS MATERIALS, 2003, 60 (1-3) :1-17

[8] Equilibrium sorption isotherm for metal ions on tree fern [J].

Ho, YS ;

Huang, CT ;

Huang, HW .

PROCESS BIOCHEMISTRY, 2002, 37 (12) :1421-1430

[9]

Igwe JC, 2005, AFR J BIOTECHNOL, V4, P1109

[10] Batch removal of copper(II) and zinc(II) from aqueous solutions with low-rank Turkish coals [J].

Karabulut, S ;

Karabakan, A ;

Denizli, A ;

Yürüm, Y .

SEPARATION AND PURIFICATION TECHNOLOGY, 2000, 18 (03) :177-184

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