Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Cationic Surfactant-modified Clay as an Adsorbent for the Removal of Synthetic Dyes from Aqueous Solutions

Sat Dec 10 02:26:46 2022

(2018) Cationic Surfactant-modified Clay as an Adsorbent for the Removal of Synthetic Dyes from Aqueous Solutions. International Journal of Chemical Reactor Engineering. p. 14. ISSN 2194-5748

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Abstract

In this study, the potential of hexadecyl trimethyl ammonium bromide modified montmorillonite (HDTMA-Mt) to remove the synthetic dyes Alizarin Red S (ARS) and Bromocresol Green (BCG) from aqueous media was assessed. The effect of different factors including surfactant loading rate onto the clay, contact time, pH, adsorbent dosage and dye concentrations, on the removal of ARS and BCG in batch systems were investigated. The adsorbent was characterized by means of scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometry (XRD). The equilibrium time for ARS and BCG was reached at 40 and 20 min, respectively, under optimized conditions (i.e. pH = 3, adsorbent dosage=1 g/L, surfactant loading rate onto the clay 70 of the cation exchange capacity (CEC) for ARS and 120 of the CEC for BCG, ARS concentration 50 mg/L and BCG concentration 500 mg/L). The adsorption rate of both dyes fitted the pseudo-second-order kinetic model and the equilibrium data was described by the Freundlich isotherm equation. The maximum monolayer adsorption capacities were equal to 666.6 and 1250 mg/g for ARS and BCG, respectively. Therefore, the HDTMA-Mt can be considered as an effective adsorbent for the removal of ARS and BCG from aqueous solutions.

Item Type: Article
Creators:
CreatorsEmail
Biglari, H.UNSPECIFIED
RodrigueziCouto, S.UNSPECIFIED
Khaniabadi, Y. O.UNSPECIFIED
Nourmoradi, H.UNSPECIFIED
Khoshgoftar, M.UNSPECIFIED
Amrane, A.UNSPECIFIED
Vosoughi, M.UNSPECIFIED
Esmaeili, S.UNSPECIFIED
Heydari, R.UNSPECIFIED
Mohammadi, M. J.UNSPECIFIED
Rashidi, R.UNSPECIFIED
Keywords: adsorption montmorillonite Alizarin Red S Bromocresol Green alizarin red-s eriochrome black t modified montmorillonite methyl-orange congo red adsorption behavior activated carbon textile dyes anionic dye waste-water Engineering
Divisions:
Page Range: p. 14
Journal or Publication Title: International Journal of Chemical Reactor Engineering
Journal Index: ISI
Volume: 16
Number: 5
Identification Number: https://doi.org/10.1515/ijcre-2017-0064
ISSN: 2194-5748
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/94

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