Aydin, AHSahin, EAkçay, G2024-04-242024-04-2420041018-46191610-2304https://hdl.handle.net/11468/21475Colour removal is an important task in textile waste-water treatment. Dodecylammonium bentonite (DOB) was used as sorbent for reactive blue 160 (RB), reactive yellow 84 (RY), direct blue 71 (DB), and direct yellow 50 (DY). Langmuir and Freundlich sorption parameters were calculated and the adsorption data fitted well to the Langmuir isotherm. The monolayer adsorption capacity of DOB increases and follows the orders RB>RY>DB>DY and DB>RB> RY> DY for the dyes at 298 K and 308 K, respectively. The thermodynamical equilibrium constant (KO), standard free energy (DeltaG(0)), enthalpy (DeltaH(0)) and entropy (DeltaS(0)) changes have been also calculated to predict the nature of adsorption.eninfo:eu-repo/semantics/closedAccessAdsorptionOrganic PollutantsOrgano-ClayBentoniteWater TreatmentDye WastewaterThermodynamical ParameterArticle1312B15301535WOS:0002268196000132-s2.0-13444263656N/AQ4