Pupils' biotech venture spurred by waste aim

Kaikorai Valley College pupils and Kaika Energy directors (from left) Johanna Hall, Regan Gilchrist, Paige Gilder, Deanna Teremoana (all 17), Kate Shaw (18) and Sophia Taing (17) toss food waste into the school's Urban Digestor, which can turn food scraps
Kaikorai Valley College pupils and Kaika Energy directors (from left) Johanna Hall, Regan Gilchrist, Paige Gilder, Deanna Teremoana (all 17), Kate Shaw (18) and Sophia Taing (17) toss food waste into the school's Urban Digestor, which can turn food scraps into biofuel and fertiliser. Photo by Peter McIntosh.
Next time you come across a rotten apple, a loaf of mouldy bread or some stinky overdue yoghurt, try not to lob it into a rubbish bin.

Kaikorai Valley College will have it.

Young Enterprise Scheme pupils from the school have established Kaika Energy, a biotechnology company which aims to turn food waste into biofuel and fertiliser, which could one day power the school's heating system.

The initiative was inspired by research which shows an estimated $900 million worth of food (120,000 tonnes) is wasted annually by New Zealand households.

Most of it is dumped in landfills, where it produces damaging greenhouse gases which are released into the atmosphere.

Kaika Energy managing director Sophia Taing said the company hoped to change that statistic with a self-sustaining machine called an Urban Digestor, which transforms food waste into biofuel and liquid fertiliser.

The Urban Digestor goes through a 21-day process, and to continue the process it needs 30kg-60kg of food waste put into it every day.

Sophia said the company was in the process of contacting Dunedin supermarkets, restaurants, stores and even the school's canteen to ask them to provide food waste.

Eventually, the company planned to take food waste from Dunedin homes, and in the future expand the collection service across New Zealand, as well as developing Pacific countries such as the Cook Islands.

Sophia said the initial goal of Kaika Energy was to create enough fertiliser and biofuel to satisfy the needs of the school's urban farm, but eventually it was hoped the products could be used to fuel the school tractor and power the school's heating system.

''These bioproducts will have a positive environmental benefit for Dunedin, and will ensure that in the coming years Dunedin will retain its beautiful image and the clean green perception that New Zealand is known for.

''It will also create an environmental awareness as well as a safe environmentally friendly product that people can proudly say they contributed to.''

The company had already forged many strong connections with community organisations, including Keep Dunedin Beautiful, the Fonterra Grass Roots Fund, Food Share and the Dunedin City Council, which were supporting the project, she said.

Anyone wanting to provide food waste should contact the company first on kaikaenergy@gmail.com.

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