Data/hora: 23/06/2024 13:02:26

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 28/11/2019
Data da última atualização: | 29/11/2019
Autoria: | DONAIRE, P. P. R.; ASSALIN, M. R.; DURAN, N.
Afiliação: | PATRICIA PULCINI ROSVALD DONAIRE, UFABC; MARCIA REGINA ASSALIN, CNPMA; NELSON DURAN, UNICAMP.
Título: | Toxicity removal by Daphinia similis assay in BTEX contaminated groundwater using nanometric TiO2/ZrO2 film and black light.
Ano de publicação: | 2019
Fonte/Imprenta: | Journal of Physics: Conference Series, v. 1323, n. 1, 2019. Edition of the Proceedings of VI NanoSAFE International Conference, Grenoble, Nov. 2018. Article 012012.
ISSN: | 1742-6596
DOI: | 10.1088/1742-6596/1323/1/012012
Idioma: | Inglês
Conteúdo: | Abstract: In this work, a photocatalytic tubular reactor, with a nanometric TiO2/ZrO2film, immobilized on glass substrate, was developed in order to investigate the degradation of volatile organic compounds, such as, benzene, toluene, ethylbenzene and xylene (BTEX ) in groundwater sample, under black light irradiation (365nm). The BTEX compound were determined by solid phase microextraction (SPME) technique and analyzed by Gas Chromatography - Ionization Flame Detection (CG -FID). The efficiency of photocatalytic process was evaluated by determination of BTEX removal and toxicity, using Daphnia similis as organism-test. The influence of the initial concentration of BTEX in the degradation process was investigated. The degradation process of sample groundwater contaminated with BTEX (145? g/L) from gasoline, resulted in 90% of efficiency after 120 minutes of treatment. The toxicity (EC50-48 h) of the groundwater sample to Daphnia similis was 14.1% (10.5-19.0) for untreated samples. After 30 min of treatment, the EC50-48 h was of 84.3 (71-100%).The benzene efficiency removal was reduced in function of the increase of its initial concentrations that observation was not found for the other compounds studied.
Thesagro: | Águas Subterrâneas; Composto Orgânico; Poluição da Água; Toxidez.
Thesaurus Nal: | Benzene; BTEX (benzene, toluene, ethylbenzene, xylene); Groundwater contamination; Organic compounds; Toluene; Toxicity.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/205799/1/Assalin-Toxicity-Daphnia-2019.pdf
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16539-1) - UPC - AP - DD -  -  -  - DIS