Photo-oxidative degradation of synthetic organic pollutant p-nitrophenol

被引：0
|
作者：
Datta, C [1 ]
Naidu, R [1 ]
Yenkie, MKN [1 ]
机构：
[1] LIT Nagpur Univ, Dept Chem Technol, Nagpur 440033, Maharashtra, India
来源：
JOURNAL OF SCIENTIFIC & INDUSTRIAL RESEARCH | 2004年 / 63卷 / 06期
关键词：
photo-oxidation; hydroxyl radicals; UV light; p-nitrophenol;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present study, photo-oxidation of a hazardous and refractory aromatic compound p-nitrophenol in its aqueous solution by strong oxidizing agent hydrogen peroxide in the presence of UV radiations emitted from UV source is investigated. The UV+H2O2 combination generates hydroxyl radicals having very high oxidation potential which helps in complete mineralisation of the organic pollutants. The photo-oxidative degradation of p-nitrophenol (PNP) is carried out using two different UV sources, namely an 8 W low pressure mercury vapour lamp and a 125 W medium pressure mercury vapour lamp to evaluate its effect on oxidative degradation. Complete degradation of the substrate and decolourisation are achieved in 5 and 2 h with 8 W and 125 W mercury vapour lamp, respectively. The initial substrate concentrate is kept at I x 10(-4) mol/L. The photo-oxidation process is found to be strongly pH dependent.
引用
收藏
页码：518 / 521
页数：4
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