Removal of chlorinated phenol from aqueous media by guava seed (Psidium guajava) tailored activated carbon

Water Resources and Industry

S.M. Anisuzzaman¹  D. Krishnaiah¹  A. Bono¹  E. Suali¹  S. Abang¹  Collin G. Joseph²  L.M. Fai² 

[1] Chemical Engineering Programme, Faculty of Engineering, Universiti Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia;Water Research Unit, Faculty of Science and Natural Resources, Universiti Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia;

关键词: Activated carbon;    Two stage self-generated atmosphere;    2,4-Dichlorophenol;    Guava seeds;    Kinetics;   

DOI  :  10.1016/j.wri.2016.10.001

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown