CORK BYPRODUCTS AS SORBENTS OF MINERAL OIL IN OIL-IN-WATER EMULSIONS

CORK BYPRODUCTS AS SORBENTS OF MINERAL OIL IN OIL-IN-WATER EMULSIONS

SOUZA, R. S.; PINTOR, A.; BOAVENTURA, R. A. A.; VILAR, V. J. P.

Artigo:

This study evaluates the use of cork granulates as sorbents of oil and grease (OAndamp;G) in mineral oil-in-water emulsions. Regranulated cork granules showed faster kinetics and higher sorption capacities than raw cork granules for mineral oil; this can be associated to the increase of carbon content due to the thermal treatment (350-400ºC), leading to the extraction of phenolic compounds and increment of the surface hydrophobicity. Sorption kinetic studies indicated that oil sorption onto the surface of regranulated cork is favoured in acidic conditions. A partition/linear model was able to describe well the equilibrium data, achieving organic-carbon-normalized partition coefficients between (pH = 6.0) 3.3 Andlt; log KOC Andlt; 4.1 (pH = 2.0). The maximum regranulated cork experimental sorption capacity at pH 4.0 was 270 mg g

This study evaluates the use of cork granulates as sorbents of oil and grease (OAndamp;G) in mineral oil-in-water emulsions. Regranulated cork granules showed faster kinetics and higher sorption capacities than raw cork granules for mineral oil; this can be associated to the increase of carbon content due to the thermal treatment (350-400ºC), leading to the extraction of phenolic compounds and increment of the surface hydrophobicity. Sorption kinetic studies indicated that oil sorption onto the surface of regranulated cork is favoured in acidic conditions. A partition/linear model was able to describe well the equilibrium data, achieving organic-carbon-normalized partition coefficients between (pH = 6.0) 3.3 Andlt; log KOC Andlt; 4.1 (pH = 2.0). The maximum regranulated cork experimental sorption capacity at pH 4.0 was 270 mg g

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DOI: 10.5151/chemeng-cobeq2014-0588-24815-156230

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Como citar:

SOUZA, R. S.; PINTOR, A.; BOAVENTURA, R. A. A.; VILAR, V. J. P.; "CORK BYPRODUCTS AS SORBENTS OF MINERAL OIL IN OIL-IN-WATER EMULSIONS", p-7314-7321. In: Anais do XX Congresso Brasileiro de Engenharia Química - COBEQ 2014 [= Blucher Chemical Engineering Proceedings, v.1, n.2]. São Paulo: Blucher, 2015.
ISSN 23591757, DOI 10.5151/chemeng-cobeq2014-0588-24815-156230