Banca de QUALIFICAÇÃO: ISIS GABRIELLA DA SILVA BATISTA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : ISIS GABRIELLA DA SILVA BATISTA
DATE: 06/05/2022
TIME: 14:00
LOCAL: Videoconferência - Teams
TITLE:

Development of a portable sampler to capture exhaust emissions from diesel cycle vehicles

KEY WORDS:

Portable vehicular sampler, prototyping, atmospheric emissions, carbon dioxide.

PAGES: 68
BIG AREA: Engenharias
AREA: Engenharia Ambiental
SUMMARY:

In recent years, it has been recognized that vehicular emissions have played a fundamental role in climate change, air pollution and the causes of human diseases linked to the emissions of pollutants such as: nitrogen oxides (NOx), carbon dioxide (CO2), volatile organic compounds (VOC), carbon monoxide (CO), and carbon black (BC). These emissions come mainly from heavy vehicles, powered by diesel oil. Due to the rapid growth of the vehicle fleet in the world and the strong dependence on the road modal for the transport of cargo and passengers, gas emissions in developing countries have been growing strongly, which is negatively affecting many populations. The control and inspection of emissions in this segment is ineffective, since there is not enough manpower or the use of analytical methods capable of identifying and quantifying all pollutants emitted via vehicle exhaust during the evaluation of vehicle conditions. In view of this, this work proposed the development of a portable sampler to capture exhaust emissions from diesel cycle vehicles, both for sampling the gaseous fraction and the particulate fraction, in order to allow the identification and quantification of the compounds present in both phases. . As a model analyte for the development and optimization of sampling conditions, carbon dioxide gas was selected, as it is a greenhouse gas and is in high concentration in this emission. Based on research in the literature and vehicle evaluation standards, different models for the sampler were designed until reaching a model to be prototyped. Real application tests were carried out with the CEFET-MG prototype on buses to optimize the sampling. A method of CO2 determination by gas chromatography with a dielectric barrier discharge ionization detector (GC-BID) was developed. The validation of the method will still be carried out, as well as some tests to check the stability of the sample at different storage times.

BANKING MEMBERS:
Presidente - ADRIANA AKEMI OKUMA
Externo ao Programa - EMERSON FERNANDES PEDROSO