Electrocoagulation applied for textile wastewater oxidation using iron slag as electrodes

Autor: Rafaela De Maman, Vilson Conrado da Luz, Laura Behling, Adriana Dervanoski, Clarissa Dalla Rosa, Gean Delise Leal Pasquali
Rok vydání: 2022
Předmět:
Zdroj: Environmental Science and Pollution Research. 29:31713-31722
ISSN: 1614-7499
0944-1344
DOI: 10.1007/s11356-021-18456-5
Popis: The indigo blue dye is widely used in the textile industry, specifically in jeans dyeing, the effluents of which, rich in organic pollutants with recalcitrant characteristics, end up causing several environmental impacts, requiring efficient treatments. Several pieces of research have been conducted in search of effective treatment methods, among which is electrocoagulation. This treatment consists of an electrochemical process that generates its own coagulant by applying an electric current on metallic electrodes, bypassing the use of other chemical products. The purpose of this study was to evaluate the potential use of iron slag in the electrocoagulation of a synthetic effluent containing commercial indigo blue dye and the effluent from a textile factory. The quantified parameters were color, turbidity, pH, electrical conductivity, sludge generation, phenol removal, chemical oxygen demand (COD), and total organic carbon (TOC). The electrocoagulation treatment presented a good efficiency in removing the analyzed parameters, obtaining average removal in the synthetic effluent of 85% of color and 100% of phenol after 25 min of electrolysis. For the effluent from the textile factory, average reductions of 80% of color reaching 177.54 mg Pt CoL
Databáze: OpenAIRE
Externí odkaz: