Biosorption of acid dyes from aqueous solution using Curcumaangustifolia scales

Environmental Health Engineering and Management

卷:3

Selvaraj Suresh¹ 

[1] Department of Chemistry, A.C.T College of Engineering and Technology, Kancheepuram District – 603 107.India;

关键词: Biosorption;    Acid dyes;    Dye removal;    Isotherm;    Kinetics;   

DOI  :  10.15171/EHEM.2016.10

来源: DOAJ

【 摘 要 】

Background: The presence of even a very small quantity of dye in water bodies is undesirable and affectsthe water bodies. Dye removal from industrial waste water is significant; hence in this study, a materialthat is an economical waste product was employed to test its acid dye removing capacity from aqueoussolution.Methods: In this study, batch mode experiments were performed in the sorption process of Acid Red 97(AR 97), Acid Red 114 (AR 114) and Acid Red 151 (AR 151) onto Curcuma angustifolia scales (CS). Also,the effect of process parameters like pH and adsorbent dosage was studied. The experimental data of AR97, AR 114 and AR 151 sorption was fitted to Langmuir, Freundlich and Temkin isotherm models. Kineticresults in AR 97, AR 114 and AR 151 sorption were fitted at various concentrations to pseudo-first order,pseudo-second order, Elovich and Intra-particle diffusion model.Results: The monolayer sorption capacity of the acid dyes was found to be AR 97 (350.87 mg/g), AR 114(202.42 mg/g) and AR 151 (168.91 mg/g). The Pseudo-second order model proved to be the best fit for theacid dyes. Boyd plot, confirms film diffusion in all acid dye sorption processes.Conclusion: The results showed higher dye removal for acid dyes at pH 2. The isotherm data, demonstratedgood sorption capacity with AR 97>AR 114>AR 151. Employing the CS material in this study proves tobe a potential alternative to costlier adsorbents, utilized for the treatment of dye containing industrialwaste water.

【 授权许可】

Unknown