REMOVAL OF TRIBUTYL PHOSPHATE FROM AQUEOUS SOLUTIONS BY TiO2 HETEROGENEOUS PHOTOCATALYSIS SUPPORTED OVER A NEW METAL PLATE WITH KINETIC STUDY
AUTOR(ES)
Rocha, Otidene R. S. da
FONTE
Braz. J. Chem. Eng.
DATA DE PUBLICAÇÃO
30/09/2019
RESUMO
Abstract The aim of this investigation was to study the degradation of tributyl phosphate (TBP) in aqueous solution by heterogeneous photocatalysis (UV-C/TiO2). To perform the investigation, aqueous solutions containing the contaminant were exposed to UV radiation in the absence or presence of TiO2 in suspension or supported on a Fe-Cr metal alloy plate. TBP analyses before and after the treatment were performed by Ultra-Performance Liquid Chromatography (UPLC) in order to quantify the contaminant degradation. The results showed that the TiO2 photocatalytic system was able to remove TBP from the solution and the formation of some by-products was observed. TiO2 photocatalytic systems were able to reduce acute toxicity in an Artemia Salina bioassay according to the increase in LC50 from 10.2 ± 0.5%(v/v) to 16.9 ± 0.6 %(v/v) for the immobilized system and to levels which were not possible to detect by the applied method any more for the suspension system.
Documentos Relacionados
- N and F Codoped TiO2 Thin Films on Stainless Steel for Photoelectrocatalytic Removal of Cyanide Ions in Aqueous Solutions
- Photo-assisted electrochemical copper removal from cyanide solutions using porous TiO2 thin film photo-anodes
- Modification and immobilization of TiO2 aiming the degradation of organic pollutant compounds by heterogeneous photocatalysis process
- TiO2 nanocrystals: relationship between morphological, structural parameters and photocatalysis
- Tratamento de efluentes por energia solar : fotocatalise heterogenea eletro-assistida utilizando eletrodos de TiO2 nanocristalino e celulas solares