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

页码：518 / 521

页数：4

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