Assessment of several advanced oxidation processes applied in the treatment of environmental concern constituents from a real hair dye wastewater

Author(s)

Bessegato, Guilherme Garcia ^[1] ; de Souza, Joao Carlos ^[1] ; Cardoso, Juliano Carvalho ^[1] ; Boldrin Zanoni, Maria Valnice ^[1]

Affiliation

^[1] Univ Estadual Paulista Unesp, Inst Quim, Ave Prof Francisco Degni 55, BR-14800060 Araraquara, SP - Brazil

• Document type: Journal article
• Source: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING; v. 6, n. 2, p. 2794-2802, APR 2018.
• Web of Science Citations: 5

Abstract

Currently, little information is available regarding the presence of compounds from raw hair dyeing wastewater. It is known that the most commonly commercial formulations contain components with toxic properties and some by-products may also be mutagenic and carcinogenic. Indeed, virtually no studies can be found in the literature dealing with the treatment of such effluents and identification of environmental concerning substances, such as p-phenylenediamine, resorcinol and Bandrowski's base. The present work sought to evaluate the treatment of real hair dyeing effluent through different combinations of advanced oxidation processes including ozonation (O-3), ozone/UV-C (O-3/UV), ozone/photoelectrocatalysis (O-3/PEC), O-3/UV/H2O2 and O-3/PEC/H2O2. O-3/PEC/H2O2 combination provided almost complete mineralization while ozonation promoted less than 50% after 90 min of treatment. HPLC analysis confirmed the presence of p-phenylenediamine, resorcinol and Bandrowski's base in the raw effluent, which were completely removed in less than 5 min of treatment through the application of the combined O-3/PEC/H2O2 process. A figure of merit, the electric energy per order, was used to compare the different methods, showing that O-3/PEC/H2O2 provides lower energy consumption and higher mineralization, and could thus be an efficient option for wastewater treatment. (AU)

• FAPESP's process: 14/03679-7 - Degradation of hair dyes and salon wastewater by photoelectrocatalysis with modified TiO2 nanotube electrodes and combination with ozonation
• Grantee: Guilherme Garcia Bessegato
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 15/18109-4 - Contribution of Nanostructured Materials in Electroanalysis of pharmaceuticals and dyes, in the oxidation and reduction photoeletrocatalytic process of Inorganic and Organic Pollutants and Water Disinfection.
• Grantee: Maria Valnice Boldrin
• Support Opportunities: Regular Research Grants
• FAPESP's process: 15/12998-1 - Chromatographic and electroanalytical methods applied in determination of p-toluenediamine and p-aminophenol in oxidative medium used in permanent hair dye.
• Grantee: João Carlos de Souza
• Support Opportunities: Scholarships in Brazil - Doctorate