Title of article
Efficient Removal of Toxic Textile Dye using Petiole Part (Stem) of Nymphaea alba
Author/Authors
Md. Lutfor Rahman, Abul Kalam Department of Chemistry - Jagannath University - Dhaka-1100, Bangladesh , Sarker, Aparna Department of Chemistry - Jagannath University - Dhaka-1100, Bangladesh , Ahmed, Nafees Department of Chemistry - Jagannath University - Dhaka-1100, Bangladesh , Mustofa, Marufa Department of Chemistry - Jagannath University - Dhaka-1100, Bangladesh , Awal, Abdul Department of Chemistry - Jagannath University - Dhaka-1100, Bangladesh
Pages
14
From page
643
To page
656
Abstract
The removal of toxic textile dye, Congo red (CR) an azo based textile dye, was investigated from aqueous solution by low cost, eco-friendly available adsorbents such as petiole part (stem) of water lily (Nymphaea alba) under various experimental conditions. Batch experiment was carried out at varying pH, dye concentration, contact time and particle size as well as doses of the adsorbent. CR was analyzed by a UV-visible spectrophotometer. Optimum pH was found at pH 2 and 6. A relative study was done using sodium chlorite and formaldehyde treated water lily. The maximum removal of CR was obtained 94.68% using untreated water lily (UT-WL). Adsorption increased with the increase of the particle size of the adsorbent. The highest removal of CR was found at a lower dose (62.5 g/g) of the adsorbent. The Freundlich isotherm model was best fitted to equilibrium data obtained from the experiment. The adsorption kinetics successfully fitted to the pseudo-second-order kinetic model.
Keywords
Congo red , Petiole part(stem) , Adsorption isotherm , Adsorption kinetics , Removal efficiency
Journal title
Pollution
Serial Year
2021
Record number
2704075
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