Homogenous and Heterogenous Advanced Oxidation of Two Commercial Reactive Dyes

摘要: Two commercial reactive dyes, the azo dye Reactive Black 5 and copper phythalocyanine Blue 21, have been treated at a concentration of 75 mg l-1 by titanium dioxide mediated photocatalytic (TiO2/UV), dark UV-light assisted Fenton (Fe2+/H2O2) Fenton-like (Fe3+/H2O2) processes in acidic medium. For treatment 5, all investigated advanced oxidation were quite effective terms colour, COD as well TOC removal. Moreover, relative growth inhibition towards marine algae Dunaliella tertiolecta that was initially 70%, did not exhibit an increase during studied reactions complete detoxification end period could be achieved for processes. However, abatement UV-VIS absorbance values mainly due to adsorption on photocatalyst surface and/or coagulative effect Fe3+/Fe2+ ions. Although only limit...