Australia-first grain ship to test biofuel’s economic and green credentials
By Sourced Externally
January 9, 2022
The country’s first grain ship powered by biofuel is set to leave port on Sunday, only the second time the renewable fuel alternative has been used in an Australian export ship.
A ship running on 20pc vegetable oil is leaving port, the second trial of its kind in Australia
Critics say biofuel cannot replace fossil fuels in shipping entirely, with hydrogen a likely long-term alternative
However biofuel may serve as a useful transition fuel as it is cheaper and can power existing ships
Edwine Oldendorff is carrying 30,000 tonnes of malting barley from Albany in WA for Vietnam in a trial commissioned by grain handling cooperative CBH.
“We’ll be measuring carbon emissions during this trip. We’re targeting a 15 per cent reduction,” CBH chief trading officer Jason Craig said.
The ship was narrowly beaten to the Australia-first milestone by a biofuel-run ship that left Gladstone in December.
Ironically that ship, which reduced its emissions by 9 per cent, was carrying 160,000 tonnes of coal to India for steel manufacturing.
Both trials used recycled vegetable oil blended with bunker oil, the fossil fuel that powers almost all of global shipping.
What is bunker oil? What is biofuel?
Bunker oil has a think consistency similar to tar. It is the heaviest and least-refined fossil fuel derived from crude oil.
“When you treat crude oil and refine it, the last two grades are road tar and [bunker] fuel oil. Diesel is a more refined form of fuel oil,” Oldendorff Carriers WA port captain Gautam Malhotra said.
As the cheapest fuel available, it is used extensively by commercial ships.
Ships like Edwine Oldendorff burn around 29 to 30 tonnes of fuel a day, Mr Malhotra said.
“I’ve seen large container ships use up to 70 or 80 tonnes a day.”
William Reinsch, the chair of international business at the US-based Center for Strategic and International Studies, said the shift away from bunker fuel was both desirable and inevitable.
Biofuels like ethanol and biodiesel are produced from natural biomass — this could be vegetable oils, sugar cane, corn or animal waste products.
These fuels burn cleaner than fossil fuels but still produce emissions.
Not a huge step forward’
“Biofuel as a supplement is not a huge step forward, but on the other hand, bunker oil is heavier and the emissions are greater,” Mr Reinsch said.
The amount of biofuel which can be blended for use in existing engines is limited. It is hoped trials like the Edwine Oldendorff’s will reveal just how much can be used and how much emissions can be reduced.
“At this stage, it’s hard to tell [how efficient the fuel will be],” Mr Malhotra said.
Mr Craig confirmed CBH had paid a premium to fund the trial but did not reveal how much more expensive the vegetable oil blend was than regular bunker oil.