title: Influence of dyeing auxiliaries on AB74 dye degradation by UV/H2O2 process.
abstract: The effect of dyeing auxiliaries on UV/H(2)O(2) removal of an indigoid dye, Acid Blue 74 (AB74) from the solution was investigated. The inhibition effect of anions including carbonate, bicarbonate and chloride on the process efficiency was evaluated in terms of color removal and total organic carbon (TOC) abatement. The presence of carbonate, bicarbonate and chloride anions had no considerable effect on the total decolorization time. However, the degradation efficiency of the process was enhanced by bicarbonate anion during the first 80 min of the process. During this period, the formation of active oxygen species such as CO(3)(-),HCO(4)(-)a nd O(2)(-) that participate in the degradation process of AB74 increases the degradation rate, in spite of the consumption of hydroxyl radicals by these anions. After this period, the overall efficiency was considerably decreased. Adding the chloride had less decreasing effect compared to the bicarbonate. The order of anions as AB74 degradation inhibitor in this study could be concluded as: [Formula: see text] .
authors.affiliation: Laboratoire de Génie des Procédés Traitement des Effluents, Ecole Nationale Supérieure de Chimie de Mulhouse, Université de Haute Alsace, 3 rue Alfred Werner, 68093 Mulhouse, France. azam.aleboyeh@uha.fr
authors.forename: Azam
authors.initials: A
authors.lastname: Aleboyeh
authors.forename: Masoud B
authors.initials: MB
authors.lastname: Kasiri
authors.forename: Hamid
authors.initials: H
authors.lastname: Aleboyeh
mesh_terms: D004396:Coloring Agents / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D010777:Photochemistry / Q000379:methods*; D014466:Ultraviolet Rays
chemical_list: D004396:Coloring Agents; D006861:Hydrogen Peroxide