Effectiveness of activated groundnut shells to remove chromium from tannery wastewater

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dc.contributor.authorMwegoha, W. J. S.
dc.contributor.authorLema, M. W. J.
dc.date.accessioned2020-03-20T06:15:51Z
dc.date.available2020-03-20T06:15:51Z
dc.date.issued2016
dc.descriptionFull Text Article. Available at: http://www.openscienceonline.com/journal/ijempen_US
dc.description.abstractThis paper presents results of the investigation of Chromium III removal from tannery wastewater using groundnut shells under laboratory scale batch experiments. The effects of pH, contact time, particle size and dosage of the adsorbent on the adsorption of Cr (III) were studied. Determination of Chromium ion concentration in the wastewater was done using Atomic Absorption Spectrophotometer (AAS). Results show that removal mechanism is dominantly adsorption, which is dependent of the physical and chemical characteristics of the material. The main constituent of groundnut shell is carbon, potentially making it suitable for making activated carbon for adsorption experiments. From the initial concentration of 6.643 ppm, optimum Cr (III) removal was obtained at pH of 4, particle size of 0.25mm, contact time of 180 minutes and adsorbent dosage of 20g, with highest efficiency of 98.013%, corresponding to final concentration of 0.132ppm. The adsorption process was found to obey the Freundlich adsorption isotherm with R2 being 0.9613. Overall, the adsorption capacity of the activated groundnut shell was found to be 2.6172mg/g which ensures that they can be used for the removal of Chromium III from tannery wastewater.en_US
dc.identifier.citationMwegoha, W. J. S., & Lema, M. W. J. (2016). Effectiveness of activated groundnut shells to remove chromium from tannery wastewater. International Journal of Environmental Monitoring and Protection, 3(4). 36-42.en_US
dc.identifier.otherhttp://www.openscienceonline.com/journal/ijemp
dc.identifier.urihttp://hdl.handle.net/20.500.12661/2236
dc.language.isoenen_US
dc.publisherScience Publishing Groupen_US
dc.subjectAdsorptionen_US
dc.subjectGroundnuten_US
dc.subjectWastewateren_US
dc.subjectTanneryen_US
dc.subjectFreundlich adsorptionen_US
dc.subjectGroundnut shellen_US
dc.subjectTannery wastewateren_US
dc.subjectChromium IIIen_US
dc.subjectChromium ionen_US
dc.subjectAtomic Absorptionen_US
dc.titleEffectiveness of activated groundnut shells to remove chromium from tannery wastewateren_US
dc.typeArticleen_US
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