Open AccessRemoval of chlorinated phenol from aqueous media by guava seed ( Psidium guajava ) tailored activated carbon
Author(s) -
S. M. Anisuzzaman,
Collin G. Joseph,
Duduku Krishnaiah,
Awang Bono,
Emma Suali,
Sariah Abang,
L.M. Fai
Publication year - 2016
Publication title -
water resources and industry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.203
H-Index - 34
ISSN - 2212-3717
DOI - 10.1016/j.wri.2016.10.001
Subject(s) - psidium , adsorption , chemistry , activated carbon , carbonization , nuclear chemistry , zinc , aqueous solution , phenol , langmuir , organic chemistry , botany , biology
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 1h, 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 919.40m2g−1. It was found that AC3 had highest 2,4-DCP adsorption capacity, which was 20.9mgg−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
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