Optimisation of the electrochemical and UV combined treatment to remove colour and organic halogenated compounds of textile effluents

Autor:	M. Riera-Torres, Carmen Gutiérrez-Bouzán
Rok vydání:	2012
Předmět:	Chromatography Chemistry Filtration and Separation Electrolyte Electrochemistry Analytical Chemistry chemistry.chemical_compound Wastewater Electrode Reactive dye Irradiation Dyeing Effluent Nuclear chemistry
Zdroj:	Separation and Purification Technology. 98:375-382
ISSN:	1383-5866
DOI:	10.1016/j.seppur.2012.08.005
Popis:	Different electrochemical oxidation and UV irradiation treatment conditions were studied to improve the removal of colour and organic halogenated compounds of textile effluents wastewater so as to minimise their environmental impact. Synthetic dyeing effluents containing a reactive dye (CI Reactive Black 5, Procion Crimson H-EXL, Procion Navy H-EXL, Procion Yellow H-EXL and Procion Blue H-EXL) and Na2SO4 as dyeing electrolyte were studied. Ti/Pt oxides electrodes at different current densities (3, 6, 12, 24 and 40 mA/cm2) and three UV irradiation lamps (6 and 9 W; 254, 360 and 365 nm maximum emission) were used. Results showed that total colour and organic halogenated compounds removal were achieved by UV irradiation after electrochemical treatment. A clear influence of current density and the type of UV lamp on colour removal was found, being the submerged lamps into the dye solution the most efficient. Kinetic constants of the UV irradiation step were calculated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6debd17355d20948dc5d8cbad1fc3725 https://doi.org/10.1016/j.seppur.2012.08.005 Zobrazit plný text záznamu Full Text from ScienceDirect