Research Article
Acid Activated Biochar Prepared from Avocado Pomace for Remediation of Methyl Orange Contaminated Aqueous Solution
Zeleke Zewde Babanto*
,
Jafer Esmael,
Guta Gonfa
Issue:
Volume 9, Issue 1, June 2025
Pages:
1-12
Received:
24 May 2025
Accepted:
11 June 2025
Published:
30 June 2025
Abstract: This study focused on the remediation of methyl orange (MO) from wastewater by preparation of acid activated biochar from avocado pomace, which was obtained from Jimma Industrial Park, Ethiopia. This avocado pomace was considered as a solid waste and accumulated on waste disposal areas of the industrial park. The optimal temperature of 500 °C was selected for further biochar preparation. Physicochemical properties of the biochar have fixed carbon content (71.15 ± 0.84%), ash content (12.95 ± 0.35%), moisture content (10.40 ± 0.45%), volatile matter content (5.50 ± 0.62%) as well as PZC (7.4 ± 0.85). The acid activated biochar at optimum temperature of before and after adsorption was characterized via FTIR, XRD, and SEM. The main parameters of solution pH (5), initial concentration (60 mg/L), mass of adsorbent (0.5 g), and contact time (120 min) were optimized. Langmuir model was more fitted to experimental data and adsorption mechanism was chemisorption; leads to the formation monolayer on the homogenous active site with maximum adsorption capacity 22.988 mg/g. The adsorption phenomena were consistent with PSO kinetics model (R2=0.9997) and adsorption mechanism was chemisorption. Thus, this low cost environmental friendly industrial waste effectively removes MO dye and solves the problem of industrial wastewater through adsorption. More research finding is recommended to study how well this adsorbent works in real wastewater samples.
Abstract: This study focused on the remediation of methyl orange (MO) from wastewater by preparation of acid activated biochar from avocado pomace, which was obtained from Jimma Industrial Park, Ethiopia. This avocado pomace was considered as a solid waste and accumulated on waste disposal areas of the industrial park. The optimal temperature of 500 °C was ...
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