alexa Abstract | Decolourisation of Stabilized Landfill Leachate using Cerbera Manghas Activated Carbon Prepared via Microwave Heating Process


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Abstract

The feasibility of converting Cerbera manghas to activated carbon process to remove the color pollutant from landfill leachate was investigated. Thus, the preparation and optimization of Cerbera manghas based activated carbon (SMAC) by microwave induced KOH activation for the adsorptive removal of color from the mature anaerobic landfill leachate was carried out. The leachate was collected from Sahom Landfill site in Perak, Malaysia and the initial concentration of color was measured as 1450 Pt.Co. The preparation conditions such as microwave heating at power range (350-600 W), impregnation of AC with KOH (0.5-3.0) and retention time (6-10 minutes) were evaluated, analyzed and optimized using response surface methodology (RSM). From the analysis of variance (ANOVA), the optimum conditions for preparation of SMAC was obtained at 560 W of activation power, 8.40 min of activation time and 2.10 of impregnation ratio with higher adsorptive removal of color (81%). Equilibrium data was best dealt with the pseudo-second-order kinetic model, while the adsorptive removal of color via SMAC was thoroughly explained by the Langmuir isotherm model. The treatment conditions such as shaking speed, contact time, adsorbent dosage and pH were also fine-tuned in order to optimize the overall treatment process. The findings exemplified the applicability of SMAC as an effective precursor for the removal of pollutant like color from the contaminated landfill leachate.

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Author(s): Areeb Shehzad, Mohammed JK Bashir*, Sumathi Sethupathi, Muhammad Younus, Jun-Wei Lim

Keywords

Mature landfill, leachate treatment, Cerbera manghas, process optimization, RSM, Adsorption., Plant sciences and Environmental sciences

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