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- W2567007452 abstract "The adsorption of Zn(II) and Cr(VI) ions from aqueous solution by activated sugarcane bagasse (ASB), EDTA modified sugarcane bagasse (MSB) and unmodified sugarcane bagasse (USB) was studied at varying particle sizes, metal ion concentrations, adsorbent dose, contact time, temperature and pH. Batch adsorption studies were used. The three common adsorption equations Temkin, Freundlich and Langmuir adsorption isotherms were used. It was found that the adsorption capacity depends on particle sizes, metal ions concentrations, adsorbent dose, contact time, temperature and pH. The amount of metal ions adsorbed decreased in the other ASB > MSB > USB. The highest percentage of metal adsorbed was achieved using the adsorbent dosage of 0.9 g, particle size of 125 mm passed, pH of 6 - 8, temperature of 60 o C, contact time of 120 min and at an initial concentration of 100 mg/L metal ion. The percentage adsorbed was higher in Cr(VI) ions than Zn(II) ions for ASB > MSB > USB. Zn(II) ions percentage adsorbed increased from 65.30 to 68.92%, 68.26 to 74.91% and 82.89 to 91.48% for USB, MSD and ASB respectively while that of Cr(VI) ions increased from 63.80 to 68.10%, 68.43 to 76.54% and 85.94 to 95.48% for USB, MSD and ASB respectively when the initial adsorbate concentration was increased from 20 to 100 mg/L. Adsorption of Zn(II) and Cr(VI) metal ions onto USB, MSD and ASB with correlation coefficient (R 2 ) values ranged between 0.8939 - 0.9989, 0.7955 - 0.9683 and 0.9120 - 0.9981 for Freundlich, Temkin and" @default.
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- W2567007452 date "2014-01-01" @default.
- W2567007452 modified "2023-09-30" @default.
- W2567007452 title "Adsorption of Zinc and Chromium ions from Aqueous Solution onto Sugarcane Bagasse" @default.
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