Author(s): Lopes, Paulo R. M. [UNESP] ; Montagnolli, Renato N. [UNESP] ; Bidoia, Ederio Dino [UNESP]
Date: 2013
Persistent ID: http://hdl.handle.net/11449/20131
Origin: Oasisbr
Subject(s): phenol; photocatalysis; photolysis; TiO(2); toxicity; phenol; phenol; photocatalysis; photocatalysis; photolysis; photolysis; TiO(2); TiO(2); toxicity; toxicity
Made available in DSpace on 2013-08-12T17:58:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-09-01
Made available in DSpace on 2013-09-30T18:47:18Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-09-01
Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:56:19Z No. of bitstreams: 0
Made available in DSpace on 2014-05-20T13:56:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-09-01
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Fundação para o Desenvolvimento da UNESP (FUNDUNESP)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
The aim of the study was to propose a treatment of simulated wastewater containing phenol by photocatalytic and photolytic processes and analyze the toxicity of these phenolic solutions. Two treatment systems were performed with UV radiation, solid electrodes and electric potential. In the first system (S1) phenol concentration was determined by UV direct spectrophotometry (269 nm) and in the second (S2) by direct photometric method (4-aminoantipyrine). Toxicological tests were carried out using two microorganisms: Escherichia coli and Saccharomyces cerevisiae. S1 results showed that erroneous conclusions can be drawn by absorbance values increase at phenol peak. Nevertheless, direct photometric method was able to identify phenol reduction in S2 and the proposed treatments degraded phenol in solution. Also, in treatment using high energy ultraviolet radiation (UVC), the phenol degradation was mainly due to the photolytic process.
Univ Estadual Paulista, Dept Bioquim & Microbiol, Inst Biociencias, Rio Claro, SP, Brazil
Univ Estadual Paulista, Dept Bioquim & Microbiol, Inst Biociencias, Rio Claro, SP, Brazil
UNESP/Rio Claro: PRH-05
