Degradation treatments of textile dyes by oxidative processes of ozonation, photocatalysis and photocatalytic ozonation associated the microbiological treatments

• Grant number: 16/22464-7
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: June 01, 2017
• End date: January 05, 2018
• Field of knowledge: Engineering - Chemical Engineering - Chemical Technology
• Principal Investigator: Carlos Renato Corso
• Grantee: Érica Janaina Rodrigues de Almeida
• Supervisor: Olga Cristina Pastor Nunes
• Host Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
• Institution abroad: Universidade do Porto (UP), Portugal
• Associated to the scholarship: 13/25535-4 - Bioremediation of textile azo dyes using microbiological treatments and advanced oxidation processes, BP.DR

Abstract

The textile industry in Brazil has great value economic, being this sector the second largest employer in the manufacturing industry, with approximately 1.6 million direct employees. In addition the country is the 5th largest producer of textiles. But despite all the benefits, these industries are among the main generators of wastewater with high pollution potential. Textile effluents are mainly produced in the dyeing process of tissues and have the following main features high organic load, intense color and toxic chemicals to humans and the environment.Among these chemical compounds include synthetic dyes, which resist different types of treatment, and thus difficult treatment processes such effluents. These compounds are persistent and can cause major imbalances to the aquatic environment when discarded improperly. As environmental laws are becoming increasingly severe, seek and improve technologies that help in the treatment of these substances is of utmost importance. Thus, biological treatment and advanced oxidation processes, arise as alternatives able to make these substances are persistent and difficult to degradation, and biologically degradable in substances harmless to the environment.In the search for alternative treatments the present study aims to study the degradation of dye Acid Blue 161 and Procion Red MX-5B by oxidative treatment of ozonation, photocatalysis and photocatalytic ozonation associated with biological treatments with the filamentous fungus Aspergillus terreus. The study aims to associate treatments in order to make the most of the benefit of each technique, in order to complete mineralization of these compounds that are so harmful to the aquatic environment when disposed of improperly.