Removal of Brilliant Green Dye from Aqueous Solutions Using Home Made Activated Carbons

被引：104

作者：

Calvete, Tatiana ^{[1
]}

Lima, Eder C. ^{[1
]}

Cardoso, Natali F. ^{[1
]}

Dias, Silvio L. P. ^{[1
]}

Ribeiro, Emerson S. ^{[2
]}

机构：

[1] Univ Fed Rio Grande do Sul, Inst Chem, BR-91501970 Porto Alegre, RS, Brazil

[2] Univ Fed Rio de Janeiro, Inst Chem, Rio De Janeiro, Brazil

来源：

CLEAN-SOIL AIR WATER | 2010年 / 38卷 / 5-6期

关键词：

Activated carbon; Adsorption; Brilliant green; Nonlinear isotherms; PINE-FRUIT SHELL; STATISTICAL DESIGN; METHYLENE-BLUE; BASIC DYE; SORPTION CAPACITY; BATCH CONDITIONS; PECAN NUTSHELL; TOXIC METALS; TEXTILE DYE; ADSORPTION;

D O I：

10.1002/clen.201000027

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Activated carbon materials were prepared from the Brazilian pine-fruit shell (Araucaria angustifolia) by chemically activated carbon (CAC) and chemically and physically activated carbon (CPAC), and tested as adsorbents for the removal of brilliant green (BG) dye from aqueous effluents. The mixed activation process leads to increases in the specific surface area, average porous volume, and average porous diameter of the adsorbent CPAC when compared to CAC. The effects of shaking time, adsorbent dosage and pH on the adsorption capacity were studied. BG uptake was favorable at pH values ranging from 2.0 to 10.0 for both CAC and CPAC. The contact time required to obtain the equilibrium using CAC and CPAC as adsorbents was 4 h at 298 K, respectively. The fractionary-order kinetic model provided the best fit to experimental data compared with other models. Equilibrium data were better fit to the Sips and Redlich-Peterson isotherm models using CAC and CPAC as adsorbents. The enthalpy and entropy of adsorption of BG were obtained from adsorption experiments ranging from 298 to 323 K.

引用

页码：521 / 532

页数：12

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