Jump to main content
Jump to site search

Issue 39, 2015
Previous Article Next Article

Modified phyto-waste Terminalia catappa fruit shells: a reusable adsorbent for the removal of micropollutant diclofenac

Author affiliations

Abstract

This study investigated the preparation of a reusable adsorbent from the phyto-waste Terminalia catappa fruit shells by acid-thermal modification and utilization for the removal of diclofenac from aqueous systems. The structural characteristic features of the modified T. catappa fruit shells (MTCFS) were analysed using Scanning Electron Microscopy, Fourier Transform Infrared Spectroscopy and Brunauer–Emmett–Teller analysis. Batch experiments proved that temperature and pH mainly influenced the adsorption process. The Langmuir and Freundlich isotherms were obeyed for the diclofenac adsorption. The Temkin isotherm model revealed that increasing temperature affected the adsorption of diclofenac. The Dubinin–Radushkevich isotherm indicated that the present adsorption system was achieved through physical interactions. A pseudo-second-order kinetic model was well fitted for the diclofenac adsorption. Intraparticle diffusion results indicated increases in the rate of adsorption and in the boundary layer thickness. The thermodynamic results revealed that increasing the temperature inversely affected the diclofenac adsorption. Recycling experiments confirmed that the MTCFS were found to be quite stable and retained their adsorption efficiency for up to eight cycles of diclofenac removal.

Graphical abstract: Modified phyto-waste Terminalia catappa fruit shells: a reusable adsorbent for the removal of micropollutant diclofenac

Back to tab navigation

Article information


Submitted
10 Oct 2014
Accepted
10 Mar 2015
First published
10 Mar 2015

RSC Adv., 2015,5, 30950-30962
Article type
Paper
Author version available

Modified phyto-waste Terminalia catappa fruit shells: a reusable adsorbent for the removal of micropollutant diclofenac

P. Sathishkumar, M. Arulkumar, V. Ashokkumar, A. R. Mohd Yusoff, K. Murugesan, T. Palvannan, Z. Salam, F. N. Ani and T. Hadibarata, RSC Adv., 2015, 5, 30950
DOI: 10.1039/C4RA11786G

Social activity

Search articles by author

Spotlight

Advertisements