Avaliação de técnicas analíticas na determinação de contaminantes orgânicos em cascalhos de perfuração
The oil has been very important to humanity in the last century. But its production results in contamination of soils and waters due to the variety of constituents, ranging from organic matter to heavy metals. Thus, it is necessary to use methods and materials to treat contaminants, which can be...
Na minha lista:
| Autor principal: | |
|---|---|
| Outros Autores: | |
| Formato: | bachelorThesis |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
|
| Assuntos: | |
| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/38872 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: | The oil has been very important to humanity in the last century. But its production
results in contamination of soils and waters due to the variety of constituents, ranging
from organic matter to heavy metals. Thus, it is necessary to use methods and
materials to treat contaminants, which can be organic or inorganic, from oil without
harm the environment. Contamination can happen due to drill cuttings, which are
originated from the cuts in the rock formation made by the drill bit. Since there is a
large volume of drill cuttings generated per year during the drilling of oil wells, is
expected to also have a fair amount of contaminants that come with it. In this way,
promising solutions, such as the use of surfactants, adsorption and microwave
processes, have grown to prominence. The organic contaminants can be removed
from the drill cuttings by the solid-liquid extraction operation and detected by a variety
of techniques to evaluate the Total Petroleum Hydrocarbons (TPH). This work had as
general objective to verify which of the techniques studied – content of oils and greases
(TOG), Infrared (IR) spectroscopy, Spectrophotometry UV-Vis absorption, Gravimetry,
Thermogravimetry and Gas Chromatography with Flame Ionization Detector (CG-FID)
– can be used for the determination of TPH from the organic contaminants in cuttings,
treated with microemulsions systems, that can be formed from the surfactants and
have advantages such as low cost and its biodegradability. Microemulsions systems
were then used to remove the contaminants from the drill cuttings and, later, this
cuttings were evaluated as to the amount still present of TPH. The results, therefore,
showed that the best technique for quantification of TPH is the Gas Chromatography
and, in qualitative terms, the Infrared and Thermogravimetry can be used as an
alternative. |
|---|