Ecologically friendly chitosan-montmorillonite bio-nanocomposite as adsorbent for textile dyes from aqueous solutions

• Main Authors: Jović-Jovičić Nataša, Banković Predrag, Mojović Zorica, Nedić-Vasiljević Bojana, Marinović Sanja, Mudrinić Tihana, Milutinović-Nikolić Aleksandra
• Format: Article
• Language: English
• Published: International Institute for the Science of Sintering, Beograd 2017-01-01
• Series: Science of Sintering
• Subjects: adsorption isotherms; characterization; chitosan-montmorillonite bio-nanocomposite; textile dyes; kinetics
• Online Access: http://www.doiserbia.nb.rs/img/doi/0350-820X/2017/0350-820X1704419J.pdf

The bio-nanocomposite of montmorillonite and natural biopolymer chitosan (C-MM) was synthesized. Intercalation of chitosan in form of monolayer into the interlamellar space of montmorillonite was confirmed by XRD and IR analysis. The adsorption of textile dyes: Acid Yellow 99 (AY99), Acid Orange 10 (AO10) and Reactive Black 5 (RB5) onto C-MM was investigated. The adsorption was performed with the respect to adsorption time, pH and initial dye concentration. The kinetics of adsorption obeyed pseudo-second-order of kinetics and was the most efficient in acidic pH. Langmuir model best described the adsorption of AY99 and AO10 , while RB5 adsorption isotherm was best fitted with Freundlich model. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. Project III 45001]