Removal of Chlorinated Phenol from Aqueous Media by guava seed (Psidium Guajava) Tailored Activated Carbon

• Main Authors: S.M. Anisuzzaman, Collin G. Joseph, Krishnaiah, Duduku, Awang Bono
• Format: Article
• Language: English; English
• Published: Elsevier 2016
• Subjects: QK Botany
• Online Access: https://eprints.ums.edu.my/id/eprint/19141/1/Removal%20of%20Chlorinated%20Phenol%20from%20Aqueous%20Media%20by%20guava%20seed.pdf; https://eprints.ums.edu.my/id/eprint/19141/7/Removal%20of%20chlorinated%20phenol%20from%20aqueous%20media%20by%20guava%20seed%20%28Psidium.pdf; https://eprints.ums.edu.my/id/eprint/19141/; https://doi.org/10.1016/j.wri.2016.10.001

In this study, the activated carbons (ACs) were prepared from guava seeds via two stages activation. The dried guava seeds were semi-carbonized at 300 °C for 1 h, and then the carbonized samples were impregnated with zinc chloride (ZnCl2). The ZnCl2: sample impregnation ratios (w/w) were altered from 1:1 to 5:1. The ACs were characterized by the yield percentage, ash content, moisture content, pH value, adsorption quality of 2,4-dichlorophenol (2,4-DCP) and surface functional groups. The surface area of the best produced AC3 was found to be 919.40 m2 g-1. It was found that AC3 had highest 2,4-DCP adsorption capacity, which was 20.9 mg g-1. The 2,4-DCP adsorption kinetic of prepared AC3 was pseudo-second order with correlation value of 0.995. In addition, the 2,4-DCP adsorption capacity of AC3 was fitted to the Langmuir model with correlation coefficient value of 0.977, indicating that chemisorption was a major contributor to the adsorption process.