relation: http://eprints.covenantuniversity.edu.ng/13901/
title: Performance of eggshells powder as an adsorbent for adsorption  of hexavalent chromium and cadmium from wastewater
creator: Abatan, Olubunmi G.
creator: Alaba, Peter Adeniyi
creator: Oni, Babalola Aisosa
creator: Akpojevwe, Kelvin
creator: Efeovbokhan, Vincent Enon
creator: Abnisa, Faisal
subject: TP Chemical technology
description: This study explores the kinetic and equilibrium performance of eggshell as an adsorbent for hexavalent chromium and  cadmium ion removal from wastewater. The experimental removal of the two metal ions was performed batch-wise and  the influence of variables like initial metal loading, pH, contact time, and adsorbent dose. Fourier-transform infrared spectroscopy  spectra reveals that chromium and cadmium ion interact with carbonyl, carboxylic, hydroxyl functional groups  in eggshell. The best pH is 6, and the adsorption capacity improves with increasing initial concentration of adsorbate, pH,  contact time and adsorbent dosage for chromium and cadmium ion. Pseudo-second-order kinetics is the most suitable  model for the removal of chromium and cadmium ion, while the equilibrium agrees with Freundlich isotherms. These  outcomes reveal that eggshell is a promising cheap adsorbent for adsorption of toxic heavy metals like chromium and  cadmium ion from aqueous solution.
publisher: Springer Nature Switzerland
date: 2020
type: Article
type: PeerReviewed
format: application/pdf
language: en
identifier: http://eprints.covenantuniversity.edu.ng/13901/1/Abatan2020_Article_PerformanceOfEggshellsPowderAs.pdf
identifier:   Abatan, Olubunmi G. and Alaba, Peter Adeniyi and Oni, Babalola Aisosa and Akpojevwe, Kelvin and Efeovbokhan, Vincent Enon and Abnisa, Faisal  (2020) Performance of eggshells powder as an adsorbent for adsorption of hexavalent chromium and cadmium from wastewater.  SN Applied Sciences.       
relation: https://doi.org/10.1007/s42452-020-03866-w