Lima, Diego Roberto de SousaBaeta, Bruno Eduardo LoboSilva, Gilmare Antônia daSilva, Silvana de QueirozAquino, Sergio Francisco de2015-04-092015-04-092014LIMA, D. R. S. et al. Use of multivariate experimental designs for optimizing the reductive degradation of an azo dye in the presence of redox mediators. Química Nova, p. 827-832, 2014. Disponível em: <http://www.scielo.br/scielo.php?pid=S0100-40422014000500012&script=sci_abstract>. Acesso em: 02 fev. 2015.1678-7064http://www.repositorio.ufop.br/handle/123456789/4971The optimization of the anaerobic degradation of the azo dye Remazol golden yellow RNL was performed according to multivariate experimental designs: a 22 full-factorial design and a central composite design (CCD). The CCD revealed that the best incubation conditions (90% color removal) for the degradation of the azo dye (50 mg L–1) were achieved with 350 mg L–1 of yeast extract and 45 mL of anaerobic supernatant (free cell extract) produced from the incubation of 650 mg L–1 of anaerobic microorganisms and 250 mg L–1 of glucose. A first-order kinetics model best fit the experimental data (k = 0.0837 h–1, R2 = 0.9263).en-USAzo dyeExtracellular degradationMultivariate experimental designsUse of multivariate experimental designs for optimizing the reductive degradation of an azo dye in the presence of redox mediators.Artigo publicado em periodicoA Sociedade Brasileira de Química dá permissão à UFOP para reproduzir no RI/UFOP, uma cópia em formato eletrônico dos artigos completos, sem nenhuma edição e/ou modificação, publicados na revista Química Nova, que tenham como autores seus alunos e/ou professores. Fonte: Email do editor de 17 set. 2013.http://dx.doi.org/10.5935/0100-4042.20140133