Renewables In­no­va­tion Award

Element - - Sustainable Businesses -

Win­ner: Gull / DB Brew­eries

The brew­ers call it DB Ex­port Brewtroleum. It’s what you get when you take the left­over waste from making beer, turn it into ethanol, and blend it with petrol.

The mix won DB Brew­eries and Gull the Renewables In­no­va­tion cat­e­gory at this year’s awards.

Cor­po­rate re­la­tions ad­vi­sor Si­mon Smith says the brew­ery at Otahuhu pro­duces al­most 600,000 litres of yeast slurry a year.

The bulk of it goes as stock feed, but the brew­ers wanted to find an alternate use for the bal­ance.

They stock­piled enough for a run through the re­fin­ery to pro­duce 30,000 litres of ethanol, which was mixed into 300,000 litres of petrol – re­plac­ing Gull Force 10 at the pumps for about six weeks dur­ing July and Au­gust.

“Our tagline was ‘drink more DB Ex­port and save the world’,” Smith says.

“We’re look­ing at do­ing it again next year now we have shown it is fea­si­ble.”

Bio­fu­els have an 8 per cent lower car­bon emis­sions tally than other per­for­mance fu­els, so DB Ex­port Brewtroleum is cred­ited with saving about 55 tonnes of CO2 emis­sions.

In to­tal, Gull’s sales of 24 mil­lion litres of bio­fuel over the past eight years has re­duced New Zealand’s po­ten­tial CO2 emis­sions by 57,000 tonnes.

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