2020
DOI: 10.1139/cjc-2019-0393
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Kinetic study and Box–Behnken design approach to optimize the sorption process of toxic azo dye onto organo-modified bentonite

Abstract: Kinetic study was applied for sodium bentonite (Na-B) and hexadecylpyridinium bentonite (HDP-B) under different amounts, namely 50% (50HDP-B), 100% (100HDP-B), and 200% (200HDP-B) with respect to cation exchange capacity (CEC). Pseudo first-order and pseudo second-order kinetic models were performed to optimize the sorption of Congo red (CR) dye from aqueous solution. The experimental data fit the pseudo second order kinetic model well. The sorption capacity (qe) of CR dye by the organo-bentonites at equilibri… Show more

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Cited by 8 publications
(2 citation statements)
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“…This requires meeting environmental requirements, as the industry consumes vast amounts of water and generates wastewater with high levels of pollutants, including unfixed dyes (Periyasamy, 2024). Worldwide, the manufacturing and coloring of fabrics release around 140,000 tonnes of toxic substances annually, most of which evade conventional wastewater treatments (Guezzen et al, 2020).…”
Section: Introductionmentioning
confidence: 99%
“…This requires meeting environmental requirements, as the industry consumes vast amounts of water and generates wastewater with high levels of pollutants, including unfixed dyes (Periyasamy, 2024). Worldwide, the manufacturing and coloring of fabrics release around 140,000 tonnes of toxic substances annually, most of which evade conventional wastewater treatments (Guezzen et al, 2020).…”
Section: Introductionmentioning
confidence: 99%
“…Among them, adsorption is the popular method because of its efficiency and economy. The adsorbents which were widely used to remove azo dyes are either inorganic such as activated carbon [3][4][5][6], hydrotalcite [7][8][9][10], diatomite [11][12][13][14][15] and bentonite [16][17][18][19], or organic such as chitosan, alginate, polysaccharide, and polymer materials [20][21][22][23][24][25][26][27][28][29][30][31] and also hybrid and composite material [32][33][34][35][36][37][38][39]. However, the most challenge for the above adsorbents is the low adsorption capacity and efficiency.…”
Section: Introductionmentioning
confidence: 99%