naa a22 4500 510748708 CHVBK 20180411083056.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11270-012-1391-2 doi (NATIONALLICENCE)springer-10.1007/s11270-012-1391-2 Acid Dye Biodegradation Using Saccharomyces cerevisiae Immobilized with Polyethyleneimine-Treated Sugarcane Bagasse [Elektronische Daten] [E. Mitter, C. Corso] Chemical reagents used by the textile industry are very diverse in their composition, ranging from inorganic compounds to polymeric compounds. Strong color is the most notable characteristic of textile effluents, and a large number of processes have been employed for color removal. In recent years, attention has been directed toward various natural solid materials that are able to remove pollutants from contaminated water at low cost, such as sugarcane bagasse. Cell immobilization has emerged as an alternative that offers many advantages in the biodegradation process, including the reuse of immobilized cells and high mechanical strength, which enables metabolic processes to occur under adverse conditions of pH, sterility, and agitation. Support treatment also increases the number of charges on the surface, thereby facilitating cell immobilization processes through adsorption and ionic bonds. Polyethyleneimine (PEI) is a polycationic compound known to have a positive effect on enzyme activity and stability. The aim of the present study was to investigate a low-cost alternative for the biodegradation and bioremediation of textile dyes, analyzing Saccharomyces cerevisiae immobilization in activated bagasse for the promotion of Acid Black 48 dye biodegradation in an aqueous solution. A 1% concentration of a S. cerevisiae suspension was evaluated to determine cell immobilization rates. Once immobilization was established, biodegradation assays with free and immobilized yeast in PEI-treated sugarcane bagasse were evaluated for 240h using UV-vis spectrophotometry. The analysis revealed significant relative absorbance values, indicating the occurrence of biodegradation in both treatments. Therefore, S. cerevisiae immobilized in sugarcane bagasse is very attractive for use in biodegradation processes for the treatment of textile effluents. Springer Science+Business Media Dordrecht, 2012 Sugarcane bagasse nationallicence Textile dyes nationallicence Biodegradation nationallicence Immobilization nationallicence Saccharomyces cerevisiae nationallicence Acid Black 48 nationallicence Mitter E. Campus de Rio Claro, Instituto de Biociências, IB, Departamento de Bioquimica e Microbiologia, UNESP—Univ. Estadual Paulista, Av 24 A 1515 CEP 13506900, Bela Vista, Rio Claro, São Paulo, Brazil aut Corso C. Campus de Rio Claro, Instituto de Biociências, IB, Departamento de Bioquimica e Microbiologia, UNESP—Univ. Estadual Paulista, Av 24 A 1515 CEP 13506900, Bela Vista, Rio Claro, São Paulo, Brazil aut Water, Air, & Soil Pollution Springer Netherlands 224/1(2013-01-01), 1-8 0049-6979 224:1<1 2013 224 11270 https://doi.org/10.1007/s11270-012-1391-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-012-1391-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mitter E. Campus de Rio Claro, Instituto de Biociências, IB, Departamento de Bioquimica e Microbiologia, UNESP—Univ. Estadual Paulista, Av 24 A 1515 CEP 13506900, Bela Vista, Rio Claro, São Paulo, Brazil aut NATIONALLICENCE 700 1- Corso C. Campus de Rio Claro, Instituto de Biociências, IB, Departamento de Bioquimica e Microbiologia, UNESP—Univ. Estadual Paulista, Av 24 A 1515 CEP 13506900, Bela Vista, Rio Claro, São Paulo, Brazil aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/1(2013-01-01), 1-8 0049-6979 224:1<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer