TY - GEN A1 - Fellah, Mamoun A1 - Hezil, Naouel A1 - Guerfi, Kamel A1 - Djellabi, Ridha A1 - Montagne, Alex A1 - Iost, Alain A1 - Borodin, Kirill A1 - Obrosov, Aleksei T1 - Mechanistic pathways of cationic and anionic surfactants sorption by kaolinite in water T2 - Environmental Science and Pollution Research N2 - 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. KW - Surfactant KW - Adsorption KW - Kaolinite KW - Water remediation KW - Adsorption modeling Y1 - 2020 UR - https://opus4.kobv.de/opus4-UBICO/frontdoor/index/index/docId/26260 UR - https://link.springer.com/article/10.1007/s11356-020-11083-6 SN - 1614-7499 VL - 28 IS - 6 SP - 7307 EP - 7321 ER -