The decoloration and mineralization of azo dye CI Acid Red 14 by sonochemical process: Rate improvement via Fenton's reactions

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	The decoloration and mineralization of azo dye CI Acid Red 14 by sonochemical process: Rate improvement via Fenton's reactions
	Lin, JJ; Zhao, XS; Liu, D; Yu, ZG; Zhang, Y; Xu, H; Xu, H, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2008
卷号	157 期号:2-3 页码:541-546
关键词	Azo Dye Low Frequency Fenton's Reaction Cast Iron Mineralization
ISSN号	0304-3894
英文摘要	The degradation of azo dye C.I. Acid Red 14 (AR14) was investigated using cast iron in the absence and presence of low frequency ultrasound (59kHz). The effects of pH, amount of cast iron ([Fe](0)) and initial concentration of AR14 ([dye]) on the degradation of AR14 by cast iron combined with low frequency ultrasound had been assessed. The degradation followed the first-order kinetics model. The first-order rate constant of AR14 degradation by cast iron was 7.50 x 10(-2) min(-1) while that by US-cast iron was 2.58 x 10(-1) min(-1). A 3.4-fold increase in the reaction rate was observed in the presence of ultrasound compared with that of absence of ultrasound. This kinetic effect is quantitatively accounted for a simple kinetic model based on the reaction of Fe(II) from cast iron in aqueous solution with sonochemically produced H2O2 (Fenton's reaction). This latter effect illustrates a simple way of achieving a substantial improvement in the efficiency of sonochemical degradation reactions. It was found that for azo dye AR14, the rate of color decay was the first order with respect to the visible absorption of the dye. The destruction of the naphthalene rings in azo dyes was slower than that of color. A significant mineralization of AR14 was observed. (C) 2008 Elsevier B.V. All rights reserved.
学科主题	Engineering, Environmental ; Engineering, Civil ; Environmental Sciences
语种	英语
WOS记录号	WOS:000258425900042
资助机构	National Key Basic Research and Development Program of China [2004CB418505]; Bureau of Science and Technology of Shenyang Municipality
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54403]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Xu, H, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Lin, JJ,Zhao, XS,Liu, D,et al. The decoloration and mineralization of azo dye CI Acid Red 14 by sonochemical process: Rate improvement via Fenton's reactions[J]. JOURNAL OF HAZARDOUS MATERIALS,2008,157(2-3):541-546.
APA	Lin, JJ.,Zhao, XS.,Liu, D.,Yu, ZG.,Zhang, Y.,...&Xu, H, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China.(2008).The decoloration and mineralization of azo dye CI Acid Red 14 by sonochemical process: Rate improvement via Fenton's reactions.JOURNAL OF HAZARDOUS MATERIALS,157(2-3),541-546.
MLA	Lin, JJ,et al."The decoloration and mineralization of azo dye CI Acid Red 14 by sonochemical process: Rate improvement via Fenton's reactions".JOURNAL OF HAZARDOUS MATERIALS 157.2-3(2008):541-546.