Green and eco-friendly adsorption of dyes with organoclay: isothermal, kinetic and thermodynamic studies. (2nd October 2022)

• Record Type: Journal Article
• Authors: Tariq, Shahzaib; Saeed, Muhammad; Zahid, Usman; Munir, Maimoona; Intisar, Azeem; Asad Riaz, Muhammad; Riaz, Aqsa; Waqas, Muhammad; Abid, Hafiz Muhammad Waqar
• Is Part Of: Toxin reviews. Volume 41:Number 4(2022)
• Page Start: 1105
• Page End: 1114
• Publication Date: 2022-10-02
• Subjects: Montmorillonite -- surfactants -- dyes -- adsorption -- optimization; Toxicology -- Periodicals; Toxins -- Periodicals; 615.905
• DOI: 10.1080/15569543.2021.1975751
• Languages: English
• ISSNs: 1556-9543

Abstract

Abstract: The present study comprises the surfactant-based modified adsorbents as inorgano–organo composites for the removal of dyes. It was depicted that 0.05 g of modified clay could be efficiently used to adsorb >90% of dye (100 mg/L). The kinetic models (pseudo-first order, pseudo-second order, intraparticle diffusion model) and isothermal models (Langmuir, Freundlich, Temkin) were also studied to examine the adsorption mechanism. Pseudo second-order kinetic model and Langmuir isothermal model fitted well with adsorption of dyes. The thermodynamic ( Δ G °, Δ H ° and Δ S ° ) parameters were also studied and negative value of ( Δ G ° ) and positive value of ( Δ S ° ) indicates the spontaneity of adsorption.