Adsorption of Heavy Metals Contaminants in Used Lubricating Oil Using Palm Kernel and Coconut Shells Activated Carbons

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dc.contributor.authorBoadu, Kwasi Opoku
dc.contributor.authorJoel, Ogbonna Friday
dc.contributor.authorEssumang, David Kofi
dc.date.accessioned2023-05-20T21:22:10Z
dc.date.available2023-05-20T21:22:10Z
dc.date.issued2020-03-10
dc.descriptionAmerican Journal of Chemical Engineering VOL 8en_US
dc.description.abstractThis research work investigated the adsorption of some heavy metals contaminants in used lubricating oil using chemically activated carbon adsorbents produced from palm kernel and coconut shells. The adsorption mechanism was able to remove some heavy metals such as zinc, chromium, cadmium and magnesium contaminants from the used lubricating oil to appreciable levels. For instance, zinc from initial concentrations of 16.475±0.950 ppm before to 10.375±0.171 ppm after filtration processes for used lubricating oil sample A. Also, for coconut shell from an initial concentration of 14.575±0.272 ppm to 5.450±0.3000 ppm after filtration processes. It was observed that the coconut shell activated carbons was effective in the removal of lead metals while palm kernel cannot. However, the activated carbons produced from palm kernel and coconut shells are not suitable for the removal of both copper and iron metals. For example, after the filtration process with the palm kernel shell activated carbon, the mean concentration of copper metal increases for virgin (C) 0.001± 0.000 to 0.075±0.013 ppm and used lubricating oil samples (A&B) from 0.150±0.008 to 0.400±0.018 ppm and from 0.220±0.096 to 0.230±0.008 ppm respectively. Also, in the case of the coconut shell activated carbon, the mean concentration of copper in virgin lubricating oil remains the same 0.001±0.000 whereas for used lubricating oils samples (i.e. A&B) it increases from 0.150±0.008 to 0.780±0.014 and from 0.220±0.096 to 0.790±0.026 respectively. Also, the equilibrium adsorption data were analyzed using the Langmuir isotherm model. The fit of this isotherm model to the equilibrium adsorption data was determined, using the linear coefficient of correlation (R 2 ). The following R2 values were obtained; Copper (0.8185), Cadmium (0.8347), Lead (0.9349), Chromium (0.9378), Iron (0.9927), Zinc (0.9953), and Magnesium (0.9997) respectively. From the results obtained and statistics point of view, it can be concluded that the Langmuir model shows a better fit due to the high coefficient of correlation(R 2≈ 1). The recovered oil could be also re-useden_US
dc.description.sponsorshipACE: Oilfield Chemicals Researchen_US
dc.identifier.citationOpoku, B. K., Friday, J. O., Essumang, D. K., & Osa, E. B. (2020). Adsorption of heavy metals contaminants in used lubricating oil using palm kernel and coconut shells activated carbons.en_US
dc.identifier.issn2330-8605
dc.identifier.uri10.11648/j.ajche.20200801.13
dc.identifier.urihttp://hdl.handle.net/123456789/1856
dc.language.isoenen_US
dc.publisherScience Publishing Groupen_US
dc.subjectActivated Carbonsen_US
dc.subjectHeavy Metalsen_US
dc.subjectContaminantsen_US
dc.subjectUsed Lubricating Oilsen_US
dc.subjectAdsorptionen_US
dc.subjectLangmuir Isotherm Modelen_US
dc.subjectCorrelation Co-efficienten_US
dc.subjectSTEMen_US
dc.subjectUniversity of Port Harcourten_US
dc.titleAdsorption of Heavy Metals Contaminants in Used Lubricating Oil Using Palm Kernel and Coconut Shells Activated Carbonsen_US
dc.typeArticleen_US
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