文献类型： 外文期刊
作者： Liu, H. 2 ; Liang, M. Y. 2 ; Liu, C. S. 1 ; Gao, Y. X. 1 ; Zhou, J. M. 1 ;
作者机构： 1.Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, Guangzhou 510650, Guangdong, Peoples R China
2.MEP, S China Inst Environm Sci, Guangzhou 510655, Guangdong, Peoples R China
关键词： Phenolic compounds;Coal ash;Ultrasonic;Catalytic degradation;Fenton-like
期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.273； 五年影响因子：11.529 ）
ISSN： 1385-8947
年卷期： 2009 年 153 卷 1-3 期
页码：
收录情况： SCI
摘要： This Study demonstrated that coal ash, as widely distributed solid waste disposal, would function as a media for organic pollutants removal in the presence or absence of H2O2/O-3 under ultrasonic radiation. Coal ash could act as a catalyst to generate (OH)-O-center dot radicals with the presence of H2O2/O-3 and consequently enhance the phenol degradation. Experimental results showed that when using coal ash as a catalyst under ultrasonic irradiation, 83.4% and 88.8% of phenol was degraded in the presence of H2O2 or O-3, respectively. The degradation rate of phenol would increase with increasing amount of O-3, while there was an optimal concentration of H2O2 (1.5 mM) for phenol degradation. Higher dosage of coal ash could result in higher phenol degradation rates. H2O2/coal ash/ultrasonic system could achieve better performance for phenol degradation under more acidic conditions, while more alkaline condition in O-3/coal ash/ultrasonic system favored phenol degradation. This study provides a new approach for wastewater treatment especially when contaminated with phenolic pollutants. (C) 2009 Elsevier B.V. All rights reserved.
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