The Removal of Cu2+ in Industrial Wastewater Using the Activated Carbon Derived from Mango (Mangifera indica) Leaves
Volume 3 - Issue 6, June 2019 Edition
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Author(s)
REJIE C. MAGNAYE
Keywords
Activated Carbon, Copper, Industrial Wastewater, Mangifera indica leaves
Abstract
The study focused on the test for the potentiality of Mango (Mangifera indica) leaves in producing adsorbent for the removal of Copper (Cu+2) in industrial wastewater. The percent removal of copper was analyzed through Atomic Absorption Spectrometry. The surface morphologies of adsorbent derived from mango leaves as well as of commercial activated carbon were determined through X-ray Diffraction Analysis. Experimental and linear and non-linear regression models were used in the determination of the efficacy of activated carbon from Mango leaves for the removal of copper from industrial wastewater. Two-way Analysis of Variance (ANOVA) and Independent t-test were used to test the validity of the hypothesis. The percent yield of mango leaves after activation was found to be 21.54%. It was also found that Mango leaves that had undergone chemical activation have higher metal adsorption compared to ordinary adsorbent. X-ray diffraction analysis revealed the mean particle size and particle size distribution while experimental method was used to obtain the bulk density and total surface area of the adsorbent from Mango leaves. The results of this study indicated that the uptake of copper metal from industrial wastewater was affected by factors such as dosage and contact time. The optimum condition for the reduction of copper metal was found to be at 0.75 grams’ dosage and 60 minutes’ contact time. At optimum condition, the percent removal of copper was 93.33 %. It was found that the effect of time does not depend on what level of dosage is present. Mathematical modelling was used to describe the capability of activated carbon to adsorb copper metal in industrial wastewater. Using Design of Experiment (DOE) software, the equation generated was Y= 0.1057 – 3.8295E-3*A + 2.5510E-5*B where Y was the percentage copper removal (%), A and B were actual variables for dosage and contact time, respectively. Based from the experimental and mathematical analysis, it had been shown that Mango leaves have potential in removing copper metal from industrial wastewater.
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