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Environmental fate & pathways

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The distribution in a sewage treatment plant (STP) has been estimated using the SimpleTreat model (implemented in EUSES 2.1.2), see table below.

Table: Distribution modelling for STP

Fraction of emission directed to air by STP



Fraction of emission directed to water by STP



Fraction of emission directed to sludge by STP



Fraction of the emission degraded in STP



D6 is not expected to undergo any significant biodegradation, and has very high measured Henry’s Law constant and log Kow and high predicted log Koc. Sludge is the main compartments to which it is expected to partition in a sewage treatment plant, with partition to air and water also being significant.