期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 175, 期 1-3, 页码 133-137出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2009.09.139
关键词
Oil palm fronds; Activated carbon; Adsorption; Bentazon
资金
- Universiti Sains Malaysia, Penang [6035287]
Oil palm fronds (OPF) were used to prepare activated carbon (PFAC) using physiochemical activation method, which consisted of potassium hydroxide (KOH) treatment and carbon dioxide gasification. The effects of the preparation variables, which were activation temperature, activation time and chemical impregnation ratios (KOH: char by weight), on the carbon yield and bentazon removal were investigated. Based on the central composite design (CCD), two factor interaction (2FI) and quadratic models were, respectively, employed to correlate the PFAC preparation variables to the bentazon removal and carbon yield. From the analysis of variance (ANOVA), the most influential factor on each experimental design response was identified. The optimum conditions for preparing activated carbon from OPF were found as follows: activation temperature of 850 degrees C, activation time of I h and KOH:char ratio of 3.75:1. The predicted and experimental results for removal of bentazon and yield of PFAC were 99.85%, 20.5 and 98.1%, 21.6%, respectively. (C) 2009 Elsevier B.V. All rights reserved.
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