Browsing by Author "Sintayehu Manahilot"

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    Removal of Cr(VI) by Adsorption using Milletta Ferruginea Seed Shell (MFSS)
    (Addis Ababa University, 2024-08) Sintayehu Manahilot; Solomon Mehretie
    Wastewater treatment technologies for the removal of hexavalent chromium are currently one of the challenges in developing countries. An adsorbent prepared from Millettia Ferruginea seed shell (MFSS) was used to assess the adsorption of Cr(VI) ions from synthetic wastewater. Numerous factors, including pH, contact time, initial concentration, and dosage of the adsorbent, were optimized. The parameters for Cr(VI) adsorption on the adsorbent were 10 mg of adsorbent, pH 1 and 40 minutes of contact time. 10.55 mg/g was found to be the highest adsorption capacity, and at constant volume, the maximum percentage removal was 55.97%. The adsorption of Cr(VI) on the MFSS adsorbent was shown to obey pseudo-second order kinetics and to follow the Freundlich isotherm model.