African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12481

Full Length Research Paper

Detoxification of copper fungicide using EDTA-modified cellulosic material

Igwe, J. C.1*, Ekwuruke, A.1, Gbaruko, B. C.2 and Abia, A. A.3
  1Department of Industrial Chemistry, Abia State University, P.M.B. 2000 Uturu, Abia State, Nigeria. 2Department of Chemistry, Jackson State University, Jackson, MS 39217, U.S.A. 3Department of Pure and Industrial Chemistry, University of Port Harcourt, River State, Nigeria.
Email: [email protected]

  •  Accepted: 16 November 2006
  •  Published: 04 February 2009

Abstract

 

Pesticides are poisons and can be particularly dangerous when misused or carelessly disposed. The detoxification of a copper fungicide (KOCIDE 101) using maize cob, a cellulosic material, was studied. Based on copper as the active agent (after a sorption period of 1 h), the concentration of the fungicide reduced from an initial value of 2000 to 206.25 ppm for the unmodified maize cob and to 24.31 ppm for the modified maize cob. The pseudo-first and second order rate equations were used to model the detoxification process. The intraparticle diffusivity and mechanism of the sorption was proposed. Also, equilibrium sorption isotherms were evaluated using the Freundlich, Langmuir and Dubinin-Radushkevich isotherm models. This results show that maize cob is an effective adsorbent for copper fungicide deactivation and detoxification.

 

Key words: Copper fungicide, maize cob, adsorption, mechanism, EDTA, detoxification.

Copyright © 2024 Author(s) retain the copyright of this article.

This article is published under the terms of the Creative Commons Attribution License 4.0

Back to Vol. 8 No. 3
Back to articles
  • Articles on Google by:
SUBSCRIBE TO RSS
SUBMIT MANUSCRIPT
CONFERENCES