Performance of Ocimum Gratissimum Leaf Activated Carbon in Water Treatment
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International Journal of Recent Engineering Science (IJRES) |  |
| © 2024 by IJRES Journal | ||
| Volume-11 Issue-2 |
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| Year of Publication : 2024 | ||
| Authors : O. O. Ayeni, O. I. Ndububa, S.O. Oyegoke, A. E. Adetoro |
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| DOI : 10.14445/23497157/IJRES-V11I2P106 |
How to Cite?
O. O. Ayeni, O. I. Ndububa, S.O. Oyegoke, A. E. Adetoro, "Performance of Ocimum Gratissimum Leaf Activated Carbon in Water Treatment," International Journal of Recent Engineering Science, vol. 11, no. 2, pp. 39-50, 2024. Crossref, https://doi.org/10.14445/23497157/IJRES-V11I2P106
Abstract
The study of Scent Leaf (Ocimum gratissimum) as a biomaterial is of great interest not only because of its nutritional, therapeutic, and pharmaceutical tendencies, but in its use as adsorbents in the removal of Turbidity, pH, Lead (Pb2+), Chromium (Cr2+), Cadmium (Cd2+), Iron (Fe2+), and E. coli in water samples used for consumption. Modified Ocimum gratissimum Leaf (OGL) was prepared by carbonizing the dry powdered material at three different temperatures of 350, 450 and 550 degrees Celsius and impregnated in a base (NaOH) to be developed into activated carbon, which was characterized using Fourier Transform Infrared (FT-IR) and Scanning Electron Microscopy coupled with Energy Dispersal Spectroscopy (SEM-EDS) in-order to appraise their functional and morphological groupings. Fixed-bed column adsorption technique was used to assess the remediation potential of the adsorbents when in contact with adsorbate at different flow rates of 15, 30 and 50 ml/min, bed-thicknesses of 1, 2 and 3 cm: contact-time of 5, 15, 30, 45 and 60 mins. Response surface methodology based on Box Behnken Design (BBD) was used to evaluate the impact that the independent variables have on the adsorption capabilities of Turbidity, pH, Pb2+, Cr2+, Cd2+, Fe 2+, and E. coli from well water. The optimum condition for maximum adsorption for the modified Ocimum gratissimum leaf activated carbon was a Flow rate of 46.39 ml/min, adsorbent bed thickness 2.866 cm, and contact time of 60 mins to effectively eliminate Cadmium to 100 %, Turbidity to 98 %, Chromium to 98 %, E.coli to 98%, Fe to 92 % and, Pb to 67 %, while reacted negatively to pH from the initial value of 7.32 to 10.081 (Highly Alkaline).
Keywords
Adsorption, Activated carbons, Fixed-bed column, Ocimum Gratissimum, Response surface methodology.
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