期刊
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
卷 59, 期 -, 页码 275-284出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jtice.2015.07.034
关键词
Nanocomposite; Bromophenol blue; Ultrasonic; Response surface methodology; Genetic algorithm
资金
- Research Council of Islamic Azad University, Arak Branch
- Research Council of Islamic Azad University, Gachsaran Branc
In this study Fe2O3-ZnO-ZnFe2O4/C nanocomposite as an efficient adsorbent according to a simple self propagating solution combustion method was synthesized and subsequently applied for the removal of bromophenol blue (BPB) dye with an ultrasound-assisted method. Carbon is prepared in-situ during the formation of nanocomposite in the form of Pine fruit which act as both fuel and carbon source. The nanocomposites was characterized by various techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray (EDS). The C, Fe, O, and Zn contents in the nanocomposite are found to be 46.14%, 8.56%, 33.24% and 2.64%, respectively. Response surface methodology (RSM) and genetic algorithm (GA) were used for optimization. Using GA, optimum conditions were set at 15, 5.59, 0.005 and 9 for initial dye concentration (mg/L), pH, adsorbent amount (g), and sonication time (min), respectively. Equilibrium isotherm models for description of adsorption capacities of nanocomposite explore better efficiency of Langmuir model with maximum adsorption capacity of 90.91 mg/g. The analysis of adsorption rate at various sonication times displays that dye adsorption followed a pseudo-second order kinetic model. (C) 2015 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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