COMPARISON ON SOLAR PHOTOCATALYTIC DEGRADATION OF ORANGE G AND NEW COCCINE USING ZINC OXIDE AS CATALYST

被引：0

作者：

Khalik, Wan Fadhilah ^{[1
]}

Ong, Soon-An ^{[1
]}

Ho, Li-Ngee ^{[2
]}

Wong, Yee-Shian ^{[1
]}

Yusoff, Nik Athirah ^{[1
]}

Ridwan, Fahmi ^{[1
]}

机构：

[1] Univ Malaysia Perlis, Sch Environm Engn, Perlis, Malaysia

[2] Univ Malaysia Perlis, Sch Mat Engn, Perlis, Malaysia

来源：

ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL | 2018年 / 17卷 / 02期

关键词：

new coccine; orange G; solar photocatalysis; sulphonate group; zinc oxide; AZO DYES; PHOTOCHEMICAL DEGRADATION; AQUEOUS SUSPENSION; ZNO; PHOTODEGRADATION; DECOLORIZATION; EFFICIENCY; SIZE;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The mineralization of azo dyes could be realized through solar photocatalytic degradation that is a green method where nonharmful end products are produced. The aim of this study was to investigate the mineralization of Orange G (OG) and New Coccine (NC) using ZnO as catalyst. The degradation of the azo dyes was conducted at different experimental conditions, and parameters such as effect of sunlight to the degradation rate, initial azo dye concentration, amounts of catalyst dosage, pH and effect of aeration to the decolorization of azo dye were investigated. Photocatalytic mineralization of the azo dyes was evaluated through the analysis of UV-Vis spectra, chemical oxygen demand (COD) and ion chromatography (IC) for residual ionic species analysis. The results showed that solar photocatalytic degradation using ZnO was effective for colour removal and the photodegradation rate followed Langmuir-Hinshelwood kinetic model. It was observed that the degradation rate of NC was higher than OG which may be due to the different number of sulphonate ions that are attached on to the azo dye molecule.

引用

页码：391 / 398

页数：8

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