Kinetic, isothermal and thermodynamic studies of Reactive Black 5 removal using rice husk ashes and powdered activated carbon

被引：3
|
作者：
Cavalcante, Luan C. [1 ]
de Carvalho, Karina Q. [2 ]
Bassetti, Fatima J. [3 ]
Coral, Lucila A. A. [3 ]
机构：
[1] Fed Univ Technol Parana UTFPR, Environm Sci & Technol Grad Program, Deputado Heitor Alencar Furtado St 5000, BR-81280340 Curitiba, Parana, Brazil
[2] Fed Univ Technol Parana UTFPR, Civil Construct Acad Dept, Deputado Heitor Alencar Furtado St 5000, BR-81280340 Curitiba, PR, Brazil
[3] Fed Univ Technol Parana UTFPR, Chem & Biol Acad Dept, Deputado Heitor Alencar Furtado St 5000, BR-81280340 Curitiba, PR, Brazil
来源：
DESALINATION AND WATER TREATMENT | 2024年 / 320卷
关键词：
Water Treatment; Physisorption; Chemisorption; Entropy; ADSORPTIVE REMOVAL; AQUEOUS-SOLUTIONS; BRILLIANT GREEN; DYES ADSORPTION; METHYLENE-BLUE; ADSORBENT; WATER; RED; SLUDGE;
D O I：
10.1016/j.dwt.2024.100606
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The study aimed to evaluate the potential of rice husk ashes (RHA) as an adsorbent for removing Reactive Black 5 (RB5) dye from water by comparing its performance to that of a commercial activated carbon (PAC) through kinetic, isotherm, and thermodynamic studies. The optimal results were obtained at pH 2.0 using PAC and RHA dosages of 0.4 and 15 g L-1, respectively. The pseudo-second-order model best described the kinetic data, with equilibrium reaching 40 min for PAC and 120 min for RHA. Langmuir model best-described isotherm data, with a calculated maximum adsorption capacity of 154.17 for PAC and 8.49 mg g-1 for RHA. Although RHA presented less adsorption capacity than PAC, the results suggest this viable and cost-effective adsorbent is an alternative to commercially available activated carbons for RB5 removal.
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页数：10
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