Micropollutants
Mostrando 1-12 de 15 artigos, teses e dissertações.
-
1. Exploring Polypyrrole as Extraction Phase for Disposable Pipette Extraction Method for Multiclass Organic Micro-Pollutant Determination in River and Tap Water Using Gas Chromatography-Mass Spectrometry
The use of a polypyrrole (PPy) is described as an efficient extraction phase for disposable pipette extraction (DPX), in a fast and ruggedized analytical method for simultaneous determination of 18 organic micro-pollutants in water using gas chromatography-mass spectrometry (GC-MS). The DPX-blank pipettes were filled with PPy, a material produced through the
J. Braz. Chem. Soc.. Publicado em: 2020-10
-
2. Synthesis, Characterization, and Synergic Photocatalytic Activity of Amorphous TiO2/Chitosan Carbon Microspheres
In this work, we report the synthesis and characterization of new amorphous graphene-like TiO2/chitosan carbon microspheres and its performance as photocatalyst. Four different carbon chitosan microspheres materials were obtained based on the distinctive procedure to incorporate TiO2 and TiOSO4 to chitosan structure by pyrolysis at 600 °C. Detailed characte
J. Braz. Chem. Soc.. Publicado em: 2020-06
-
3. Enhanced removal of emerging micropollutants by applying microaeration to an anaerobic reactor
RESUMO O presente trabalho teve como objetivo avaliar o impacto da microaeração tanto no desempenho de remoção de alguns micropoluentes emergentes (fármacos, hormônios e bisfenol A) quanto na estrutura da comunidade microbiana de um reator anaeróbio tratando uma água residuária sintética. Sob condições anaeróbias, as eficiências de remoção do
Eng. Sanit. Ambient.. Publicado em: 03/10/2019
-
4. Removal of synthetic sex hormones by hydrothermal carbonization
ABSTRACT One of the most prominent fields of environmental chemistry is the study and the removal of micro-pollutants from aqueous matrices. Analytical techniques for their identification and quantification are becoming more sensitive and comprehensive and, as a result, an increasing number of drugs have been detected in environmental samples. However, the l
An. Acad. Bras. Ciênc.. Publicado em: 14/05/2018
-
5. CHARACTERIZATION OF ENALAPRIL AND RANITIDINE CHLORINATION BY-PRODUCTS BY LIQUID CHROMATOGRAPHY/HIGH-RESOLUTION MASS SPECTROMETRY AND THEIR TOXICITY EVALUATION
Due to its low cost, its capability for disinfection and oxidation, chlorination using gaseous chlorine or hypochlorite salts, has also been commonly applied in water treatment plants for oxidation and disinfection purposes. Little is known about the identity and toxicity of by-products resulting from the chlorination of pharmaceutical micropollutants, such
Quím. Nova. Publicado em: 2017-08
-
6. Desenvolvimento de eletrodos cilíndricos de diamante para tratamento de águas / Cylindrical diamond electrodes for wastewater treatment
Cylindrical diamond electrodes are developed with area up to 75 cm2 and were applied in electrochemical degradation of organic pollutants in wastewater. Systematic study was carried out to deposit conductive and well-adherent diamond onto several materials. These electrodes were characterized in term of their material and electrochemical properties by scanni
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/03/2012
-
7. Degradação de poluentes emergentes por processos Fenton e foto-Fenton
A continuous photochemical treatment system was developed for aiming the treatment of aqueous solutions containing relevant micro-pollutants (microcystin-LR, sulfamethoxazole and 17-b estradiol). The continuous photo-Fenton process provided high degradation efficiency. However, contact time between samples and the irradiated region is short relative to total
Química Nova. Publicado em: 2012
-
8. DeterminaÃÃo de Micropoluentes Emergentes em Esgoto SanitÃrio, Hospitalar e Ãguas Superficiais / Determination of Emerging Micropollutants in Sewage, and Surface Water Hospital
No Brasil, estudos de avaliaÃÃo de micropoluentes emergentes em matrizes ambientais como esgotos sanitÃrios e hospitalares, e corpos de Ãgua, ainda sÃo bastante incipientes, assim como a remoÃÃo desses compostos em EstaÃÃes de Tratamento de Esgotos (ETEs) de baixo custo como lagoas de estabilizaÃÃo, assim como em sistemas de lodos ativados e siste
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/11/2011
-
9. ESTABELECIMENTO DE CONDIÇÕES ANALÍTICAS PARA DETERMINAÇÃO DE HORMÔNIOS ESTRÓGENOS EM ÁGUA POTÁVEL DISTRIBUÍDA NA CIDADE DE SÃO LUÍS-MA / ESTABLISHMENT OF ANALYTICAL CONDITIONS FOR DETERMINATION Of THE HORMONE ESTROGEN DISTRIBUTED IN DRINKING WATER CITY OF SÃO LUIS-MA
Given the humanity perception of necessity to preserve the environment and the incessant search for sustainable development, today the preservation of natural water sources is by far one of the most worrying factors for the preservation of life. Besides the most common aquatics pollutants, also there is one called emerging pollutants, which in recent decades
Publicado em: 2009
-
10. Desreguladores endócrinos no meio ambiente: efeitos e conseqüências
There is an increasing interest in micropollutants in the environment that can interfere with the endocrine system, affecting health, growth and reproduction of animals and humans. These substances are known as Endocrine Disrupting Chemicals (EDCs) and can be found in domestic sewage, domestic wastewater treatment plant effluents, and in natural and potable
Química Nova. Publicado em: 2007-06
-
11. Determination of organochlorine compounds and polycyclic aromatic hidrocarbons in Lagoa de Carapicuiba- SP / Determinação de compostos organoclorados e hidrocarbonetos poliaromáticos na Lagoa de Carapicuíba - SP
In 2002, started the workmanships of widening and deepening of the gutter of the river Tietê in the metropolitan area of Sao Paulo, as a tool to prevent the periodic floods that happen in this region. A large amount of sediment, rocks and garbage have been removed from the river and this same material has been deposited in the lagoa de Carapicuíba, which s
Publicado em: 2007
-
12. Distribuição de hidrocarbonetos policíclicos aromáticos em solos na região da serra catarinense o comparação entre metodologias de extração e avaliação do impacto ambiental
The purpose of this work went to compare the efficiency of extraction of PHA in soil, applying the methodologies of the ultrasound, soxhlet and shaking besides to verify the distribution, occurrence and the amounts of polycyclic aromatic hydrocarbons (PHA) in superficial layers of the soil near to an industry of biomass in the city of Lages, mountain region
Publicado em: 2006