THE DIMINISHING OF THE CONTENT OF TEXTILE DIRECT DYES AND AUXILIARY COMPOUNDS DURING THEIR CATALYTIC OXIDATION

• Main Authors: Maria Gonta, Gheorghe Duca, Vera Matveevici, Larisa Mocanu
• Format: Article
• Language: English
• Published: Academy of Sciences of Moldova, Institute of Chemistry 2014-06-01
• Series: Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry
• Subjects: disperses dye; anionic surfactant; textile wastewater; chemical and electrochemical oxidation; adsorption; TiO2; ZrO2
• Online Access: http://www.cjm.asm.md/sites/default/files/article_files/Gonta%2085-92.pdf

Advanced oxidation methods of organic compounds lead to their partial mineralization and increase of the adsorption process efficiency on the surface of oxidized activated carbon. We have studied the oxidation process using model solutions containing mixture of dye direct brown (DB), ethylene glycol (EGL) and sodium lauryl sulfate (SLS) under the action of Fenton reagent, in the presence and absence of UV irradiation or under the action of electric current (in the electrochemical cell). The same studies were performed by replacing the iron (II) ion with titanium dioxide.