Mechanistic pathways of cationic and anionic surfactants sorption by kaolinite in water
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RESEARCH ARTICLE
Mechanistic pathways of cationic and anionic surfactants sorption by kaolinite in water Mamoun Fellah 1,2 & Naouel Hezil 3,4 & Kamel Guerfi 5 & Ridha Djellabi 6 & Alex Montagne 7 & Alain Iost 7 & Kirill Borodin 8,9 & Aleksei Obrosov 10 Received: 12 May 2020 / Accepted: 30 September 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Surfactants are widely used in many chemical industries and as primary components of cleaning detergents due to their specific characteristics, which in turn results in high pollution of domestic and industrial wastewaters by such substances. In this study, the mechanistic pathways of the adsorption of cationic benzyl-dimethyl-dodecyl ammonium bromide (BDDAB) and anionic sodium dodecyl sulfate (SDS) surfactants on kaolinite clay in water were investigated. The results showed that the adsorption of anionic surfactant (SDS) on kaolinite is better compared with cationic surfactant (BDDAB), wherein the ♦maximum adsorption capacity was found 161.4 μmol g−1 and 234 μmol g−1 for BDDAB and SDS, respectively. Adsorption kinetics were the best suited to pseudo-second-order model for both BDDAB and SDS with an adsorption rate constant of 0.028 g μmol−1 min−1 and 0.023 g μmol−1 min−1, respectively. Meanwhile, the adsorption of BDDAB by kaolinite showed that the isotherm adsorption tended to follow the Langmuir-Freundlich and Freundlich isotherm models. However, the SDS adsorption isotherm obeyed only the Langmuir-Freundlich model. Keywords Surfactant . Adsorption . Kaolinite . Water remediation . Adsorption modeling
Introduction Clay minerals are widely used to remove organic contaminants, heavy metals, and bacteria from waters and wastewaters. Сlay minerals showed excellent adsorptive capacity for water remediation due to their high specific surface area, high
cation exchange capacity, mechanical stability, and negative charges of surfaces (Grekov et al. 2019; Cherian et al. 2018, Djellabi et al. 2014, Djellabi et al. 2020). Further advantage of clay minerals compared with commercial activated carbon is low-cost production (Wang et al. 2017). Clays carry a negative charge due to the broken bonds around the edges of the
Responsible Editor: Tito Roberto Cadaval Jr * Mamoun Fellah [email protected]
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Department of Environmental Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518055, People’s Republic of China
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Mechanical Engineering Department, ABBES Laghrour-University, P.O 1252, 40004 Khenchela, Algeria
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Tribology and Materials Group, Laboratory of Foundry, Badji Mokhtar University, B. O, 12 CP, 23000 Annaba, Algeria
Laboratory of Mechanics Surfaces and Materials Processing, ARTS ET METIERS ParisTech, 8, Boulevard Louis XIV, 59046 Lille Cedex, France
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M. N. Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, 18 S. Kovalevskoi Str., Ekaterinburg, Russian Federation 620108
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Ural Federal University, 19 Mira Str., Yekaterinburg, Russian Federation 620002
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