Exam Question
With reference to the following two types of dispersants explain what they are, and where are used:
(a) Conventional dispersant
(b) Concentrate dispersant
Class 2 (2nd Engineer)
SSEP
📅 Jan 2023
Reference Answer
Conventional Dispersants
Conventional dispersants, also known as second-generation or Type 1 dispersants, are mixtures of surfactants and one or more solvents. They are specifically formulated to break up oil slicks into tiny droplets that disperse into the water column, preventing the oil from reaching shorelines. These dispersants are applied undiluted (neat) from vessels and use non-aromatic hydrocarbons as their solvent. The recommended dosage for conventional dispersants is 30–100% of the oil's volume.
Concentrate Dispersants
Concentrate dispersants are a more modern form, categorized as third-generation or Type 2 and Type 3 . Like conventional dispersants, they're used to break up oil slicks. However, their application and composition differ slightly.
Conventional dispersants, also known as second-generation or Type 1 dispersants, are mixtures of surfactants and one or more solvents. They are specifically formulated to break up oil slicks into tiny droplets that disperse into the water column, preventing the oil from reaching shorelines. These dispersants are applied undiluted (neat) from vessels and use non-aromatic hydrocarbons as their solvent. The recommended dosage for conventional dispersants is 30–100% of the oil's volume.
Concentrate Dispersants
Concentrate dispersants are a more modern form, categorized as third-generation or Type 2 and Type 3 . Like conventional dispersants, they're used to break up oil slicks. However, their application and composition differ slightly.
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