Advanced Chemical Oxidation. ACO Treatment of Dye Wastewater

Photodegradation process This part of study was consisted of a preliminary test and a further photodegradation test. The preliminary test was to examine the basic photodegradaton of sixteen commercial dyes while the further photodegradation test was to explore the reaction pathways and the decay rates of six purified Aromatic Dyes under different conditions. These conditions were aimed at studying including 1) the effect of initial pH 2) the effect of pH buffer 3) the quenching effect in the 

Remediation of Chlorianted Aromatic Dyes (CADs) Polluted Soil by Surfactant Micellar/UV system. 

Hydrophobic dyes such as Chlorinated Aromatic Dyes (CADs) are one of the widely used dyes in dyeing industry today (Mishra G. and Tripathy M., 1993). In general, Hydrophobic compounds like CADs are slightly soluble to water in nature and readily sorbed onto soil or sediment in the disposal sites (Edwards D.A. et. al., 1994 Liu Z. and Shondali L., 1991 Miyamoto J. T., 1979). The remaining dyes escaping from treatment system may be discharged to rivers or harbours and eventually deposited in the sediment. Therefore, contamination of soils and sediments by CADs is an environmental concern. 

Several researches have justified that surfactant solutions can not only use as rinsing agents to effectively desorbing hydrophobic organic pollutants from soil (Edwards D.A. et al., 1994 Liu. Z., 1991 Kile D.E. and Chiou C.T., 1988), but also act as catalysts in photochemical decay reaction of chlorinated organic compounds (Chu W. 

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Advanced Chemical Oxidation (ACO) treatment of dye wastewater, a. Ozonation of Aromatic Dyes... 

CHAPTER 4 RESULTS DISCUSSION ADVANCED CHEMICAL OXIDATION (ACO) TREATMENT OF DYE WASTEWATER - OZONATION OF AROMATIC DYES... 

This research consisted of two parts The first part was the Advanced Chemical Oxidation (ACO) Treatment of dye wastewater which including the ozonation of 6 purified aromatic dyes and photodegradation of 16 commercial aromatic dyes 6 purified aromatic dyes. The second part was the remediation of Chlorinated Aromatic Dyes (CADs) polluted soil by surfactant micellar/UV system which including the photodegradation of Disperse Red 13 and the effect of humics on this system. 

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