Copper (11) Ions Biosorption from Aqueous Solution Using Modified Moringa Oleiferal Leaves (MMOL)
American Journal of Physical Chemistry
Volume 7, Issue 2, June 2018, Pages: 12-18
Received: Feb. 11, 2018;
Accepted: Mar. 14, 2018;
Published: Jun. 1, 2018
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Adebayo Oluwafemi Lawrence, Department of Chemistry, College of Education, Ikere, Ekiti State, Nigeria
Kenni Amoke Monisola, Department of Chemistry, College of Education, Ikere, Ekiti State, Nigeria
Oyetunde Julius Gbenga, Department of Chemistry, College of Education, Ikere, Ekiti State, Nigeria
Jegede Rufus Oluwafemi, Department of Chemistry, College of Education, Ikere, Ekiti State, Nigeria
Ajayi Margret Grace, Department of Chemistry, College of Education, Ikere, Ekiti State, Nigeria
The present research work demonstrated the ability of MMOL in removing Copper (II) ions from an aqueous solution. The modified (MMOL) and unmodified moringaoleifera (UMOL) was characterized based on PZC and surface area. Isotherm experiments were conducted and the data obtained were fitted to Langmuir and Freundlich isotherm equations. The Freundlich equation gave the best description of the sorption process and the maximum saturated monolayer sorption capacity of the MMOL for CU (II) ions was 78.45 mg g-1. The kinetics of the sorption process was studied by varying the initial CU (II) ions concentrations and the result obtained was analyzed by using pseudo-first-order and pseudo-second-order kinetic models. The pseudo second-order kinetic model was found to fit the experimental data for the entire sorption period with high coefficient of determination (r2). The effects of MMOL dose were studied using batch sorption system. The linear form of the Langmuir equation was used to analyze the data obtained when the sorbent dosage was optimized by method of continuous variation. The results obtained showed that the equilibrium monolayer sorption capacity, qm, of the MMOL for CU (II) ions decreased (78.45 - 38.66 mg g-1) with an increase in sorbent dosage. The result obtained from pH optimization showed that CU(II) ions removal increases with increase in CU(II) ions solution pH.
Adebayo Oluwafemi Lawrence,
Kenni Amoke Monisola,
Oyetunde Julius Gbenga,
Jegede Rufus Oluwafemi,
Ajayi Margret Grace,
Copper (11) Ions Biosorption from Aqueous Solution Using Modified Moringa Oleiferal Leaves (MMOL), American Journal of Physical Chemistry.
Vol. 7, No. 2,
2018, pp. 12-18.
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