Decolorization of reactive textile dyes using water falling film dielectric barrier discharge.

摘要: Abstract Decolorization of reactive textile dyes Reactive Black 5, Blue 52, Yellow 125 and Green 15 was studied using advanced oxidation processes (AOPs) in a non-thermal plasma reactor, based on coaxial water falling film dielectric barrier discharge (DBD). Used initial dye concentrations the solution were 40.0 80.0 mg/L. The effects different pH solutions, addition homogeneous catalysts (H2O2, Fe2+ Cu2+) decolorization during subsequent recirculation through DBD i.e. applied energy density (45–315 kJ/L) studied. Influence residence time investigated over period 24 h. Change values effect adjustments after each also tested. It found that solutions did not influence decolorization. most effective 97% obtained with 10 mM H2O2 system 80.0 mg/L 5 45 kJ/L, 24 h from treatment. Toxicity evaluated brine shrimp Artemia salina as test organism.