NDLI: Sulphate-Crosslinked Chitosan as an Adsorbent for the Removal of Congo Red Dye From Aqueous Solution

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Sulphate-Crosslinked Chitosan as an Adsorbent for the Removal of Congo Red Dye From Aqueous Solution

Content Provider	SAGE Publishing
Author	Jeyaseelan, Christine Chaudhary, Nisha Jugade, Ravin
Copyright Year	2018
Abstract	Dyes are a major cause of concern nowadays as large quantities are being released into water bodies causing pollution. In this article, modified chitosan (sulphate crosslinked) has been studied for the removal of Congo red (a benzidine-based anionic diazo dye) which is a toxic dye introduced into water bodies from textile industries. Sulphate-crosslinked chitosan (SCC) was prepared in the laboratory and the characterization of SCC was done by Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). Various parameters such as pH, contact time, adsorbent dosage, and concentration of adsorbent were optimized. The adsorption capacity was determined at pH 3.0, at which the percentage recovery was about 90% and followed Freundlich adsorption isotherm with an adsorption capacity of 91.8 mg/g. The adsorption followed pseudo-second-order kinetics. Various thermodynamic parameters were also determined for the change in adsorption with temperature. The SCC was regenerated with NaOH and showed good recycling capacity. The modified chitosan was applied for the removal of Congo red from industrial wastewater samples (spiked).
Related Links	https://journals.sagepub.com/doi/pdf/10.1177/1178622118811680?download=true
ISSN	11786221
Volume Number	11
Journal	Air, Soil and Water Research (ASW)
e-ISSN	11786221
DOI	10.1177/1178622118811680
Language	English
Publisher	Sage Publications UK
Publisher Date	2018-11-29
Publisher Place	London
Access Restriction	Open
Rights Holder	© The Author(s) 2018
Subject Keyword	sulphate crosslinking chitosan Congo red Biodegradable polymers spectrophotometer
Content Type	Text
Resource Type	Article
Subject	Environmental Science

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