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RESEARCH ARTICLE  [Accepted]
DOI: https://doi.org/10.4491/eer.2017.011
Comparative adsorption of crude oil using mango (mangnifera indica) shell and mango shell activated carbon
Babatope Abimbola Olufemi, and Funmilayo Otolorin
University of Lagos, Lagos, Nigeria
Corresponding Author: Babatope Abimbola Olufemi ,Tel: +234-8023162183, Email: bolufemi@yahoo.com
Received: January 23, 2017;  Accepted: May 19, 2017.
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ABSTRACT
Mango shell (MS) and mango shell activated carbon (MSAC) was used to adsorb crude oil from water at various experimental conditions. The MSAC was prepared by carbonization at 450oC and chemical activation using strong H3PO4 acid. The adsorbents were characterized with Fourier transform Infrared (FTIR) spectroscopy. Investigations carried out included the effects of parametric variations of different adsorbate dose, adsorbent dose, time, temperature, pH and mixing speed on the adsorption of crude oil. The equilibrium isotherm for the adsorption process was determined using Langmuir, Freundlich, Temkin and Dubinin Radushkevich isotherm models. Temkin isotherm was found to fit the equilibrium data reasonably well than others. The result demonstrated that MSAC was more effective for crude oil adsorption than raw mango shell. Optimum conditions were also presented. The enhanced effect from activation was justified statistically using ANOVA and Bonferroni-Holm Posthoc significance test. The pseudo first order kinetics gave a better fit for crude oil adsorption with both MS and MSAC.
Keywords: Activated carbon | Adsorption | Crude oil | Mango shell | Optimization
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