The Environmental Protection Department has launched a nine-month trial in which five local ferries will switch to a cleaner ultra low sulphur diesel to cut sulphur dioxide and particulate emissions.
If the switch is later fully implemented, it is expected to cut sulphur dioxide emissions by 90% and particulate emissions 10%.
The department said domestic ferries are a major source of local maritime air-pollution emissions, accounting for 40% to 70% of the air pollutants emitted from all local vessels. The sulphur content of ultra low sulphur diesel is about 1% of that of the marine light diesel the ferries now use.
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