文章基本信息

标题：Optimization of the catalytic ozonation process using copper oxide nanoparticles for the removal of benzene from aqueous solutions
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作者：L. Mohammadi ; E. Bazrafshan ; M. Noroozifar 等
期刊名称：Global Journal of Environmental Science and Management
印刷版ISSN：2383-3572
电子版ISSN：2383-3866
出版年度：2017
卷号：3
期号：4
页码：403-416
DOI：10.22034/gjesm.2017.03.04.006
语种：English
出版社：Iran Solid Waste Association
其他摘要：The current study aimed to examine the overall feasibility of the use of copper oxide nanoparticles (CuO-NPs) as a catalyst in ozonation process for the removal of benzene from aqueous solutions under experimental conditions. This experimental study was conducted on a laboratory scale reactor in a semi-batch mode. The effect of critical operating parameters such factors as pH, concentration of benzene, reaction time and nano-catalyst dose on the removal of benzene was investigated. The samples included with benzene concentrations (10-200 mg/L), pH (3-13), catalyst dose (0.1-0.5 mg), and ozonation time (5-50 min). Findings indicated that the removal of benzene depended on various utilization parameters. The highest efficiency was achieved at reaction time of 50 min, pH of 12, initial benzene concentration of 10 mg/L and catalyst dose of 0.5 g. Among the studied factors, the maximum and the minimum contributions were made by the dose of nanoparticles (83%) and the reaction time (~73%). The software predicted that use of 0.13 g of the catalyst at pH of 12 and ozonation time of 5 min would lead to a removal efficiency of 68.4%. The catalytic ozonation process was able to remove benzene, and addition of CuO-NPs as a catalyst together with the ozonation process increased the benzene removal efficiency. The values of R² = 0.9972, adjusted R2= 0.9946, and predicted R² =0.9893 indicated that the model was acceptably predicted by the software and fitted the data obtained in the experiments.
其他关键词：aqueous solution ; Benzene ; catalytic ozonation ; Copper oxide nanoparticles (CuO-NPs)