ADSORPTION OF CHROMIUM (CR) AND MANGANESE (MN) FROM WATER USING CARBONIZED RAFFIA PALM SEED SHELL, SAMPLE FROM OLUSEGUN AGAGU UNIVERSITY OF SCIENCE AND TECHNOLOGY, OKITIPUPA ONDO STATE.
Abstract
This study investigated the adsorption of chromium (Cr) and manganese (Mn) ions from aqueous solutions using carbonized raffia palm seed shell. Batch adsorption experiments were performed by varying adsorbent dosage of 0.5g, 1.0g, 1.5g, 2.0g, 2.5g, using 50ppm, solution pH of 2.0, 4.0, 6.0, 8.0, 10.0, using 20ppm, contact time of 30mins, 1hour, 1hour30mins, 6hours, 24hours, using 100ppm, temperature of 20°C, 30°C, 40°C, 50°C, 60°C using 100ppm and initial metal concentration of 10ppm, 20ppm, 50ppm, 100ppm, 500ppm. The residual concentrations of Cr and Mn after treatment were determined using Atomic Absorption Spectroscopy (AAS). Fourier Transformed Infrared (FT-IR) spectrometer and scanning Electron Microscopy (SEM) were used to determine bond that existed and surface morphology of the activated carbon made of raffia Palm seed shell before and after adsorbtion. The percentage adsorbed using 1g of carbonized raffia palm seed shell at varried concentration of 10ppm, 20ppm, 50ppm, 100ppm, 500ppm of Cr and Mn solution are 95.2%, 88.5%, 82.1%, 72.8%, 58.5% and 85%, 78%, 65%, 55%, 40% respectively. The data were subjected to Freundich and langmuir isotherm.
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