Start Submission Become a Reviewer

Reading: Kinetics and isotherm studies for the adsorption of Cu(II) from aqueous solution by carbonba...

Download

A- A+
Alt. Display

Research Articles

Kinetics and isotherm studies for the adsorption of Cu(II) from aqueous solution by carbonbased matrix formed using para-nitroacetanilide

Authors:

T. M. M. K. Bandara ,

University of Peradeniya, Peradeniya, 20400, LK
About T. M. M. K.
Department of Chemistry, Faculty of Science
X close

V. N. Seneviratne

University of Peradeniya, Peradeniya, 20400, LK
About V. N.
Department of Chemistry, Faculty of Science
X close

Abstract

Pollution of water is a pragmatic problem in the world today. Contamination by heavy metals and dyes is a major concern of water pollution. This study examines a new adsorbent made by the reaction between para-nitroacetanilide and concentrated sulfuric acid and is the first-ever study carried out to the best of our knowledge. The adsorption of Cu2+ has been studied on this adsorbent as a preliminary study. The prepared material was characterized using Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), X-ray Fluorescence Spectroscopy (XRF), Powder X-ray Diffraction (PXRD) and point of zero charges (pzc) analysis. The average pore diameter obtained from SEM analysis was 2 μm, concluding that the adsorbent has a desirable morphology for better adsorption. The adsorption experiments were carried out as a function of pH, shaking time, initial Cu2+ concentration, and adsorbent dosage. The adsorption kinetics at low concentrations (34.50 mg L-1 = 1.5 10-7 mol m-3) follows pseudo-second-order kinetics with an R2 value of 0.99, suggesting a chemisorption process. The adsorption data agree with the Freundlich isotherm at higher concentrations (varying from 17.21 mg L-1 (7 10-8 mol m-3) to 96.25 mg L-1 (3.6 10-7 mol m-3) revealing multilayer adsorption, amounting to a maximum adsorption capacity of 8.31 mg g-1 at 250C.

How to Cite: Bandara, T. M. M. K., & Seneviratne, V. N. (2022). Kinetics and isotherm studies for the adsorption of Cu(II) from aqueous solution by carbonbased matrix formed using para-nitroacetanilide. Ceylon Journal of Science, 51(5), 521–529. DOI: http://doi.org/10.4038/cjs.v51i5.8079
12
Views
Published on 31 Dec 2022.
Peer Reviewed

Downloads

  • PDF (EN)

    comments powered by Disqus