Evaluation of the ability of calcite, bentonite and barite to enhance oil dispersion under arctic conditions.
Mar Pollut Bull
; 127: 626-636, 2018 Feb.
Article
em En
| MEDLINE
| ID: mdl-29475706
ABSTRACT
A test program was conducted at laboratory and pilot scale to assess the ability of clays used in drilling mud (calcite, bentonite and barite) to create oil-mineral aggregates and disperse crude oil under arctic conditions. Laboratory tests were performed in order to determine the most efficient conditions (type of clay, MOR (Mineral/Oil Ratio), mixing energy) for OMA (Oil Mineral Aggregate) formation. The dispersion rates of four crude oils were assessed at two salinities. Dispersion was characterized in terms of oil concentration in the water column and median OMA size. Calcite appeared to be the best candidate at a MOR of 25. High mixing energy was required to initiate OMA formation and low energy was then necessary to prevent the OMAs from resurfacing. Oil dispersion using Corexit 9500 was compared with oil dispersion using mineral fines.
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Texto completo:
1
Coleções:
01-internacional
Temas:
Agentes_cancerigenos
Base de dados:
MEDLINE
Assunto principal:
Sulfato de Bário
/
Poluentes Químicos da Água
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Bentonita
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Carbonato de Cálcio
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Petróleo
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Poluição por Petróleo
Idioma:
En
Revista:
Mar Pollut Bull
Ano de publicação:
2018
Tipo de documento:
Article