What idea will you
contribute to a
zero-waste future?

The Challenge

We challenge you to come up with a business idea or a prototype that contributes to circular biobased economy. Will you pick up the gauntlet?

It could anything from a new material made out of biomass, a new technology to extract valuable products from biomass residue, to a more efficient production process or services that bring zero-waste future one step closer.

From January until June 2023, with the support of top experts, you will develop your idea into a their idea into a solid business proposition, ready to pitch to the jury and potential investors. Do you want to create positive impact and to get a taste of what it means to be an entrepreneur?

Join the Challenge now!
WUR Campus

Take up the Challenge, make a difference!

At Wageningen University & Research top scientists and students from all over the world join forces to work on projects that make a difference to the quality of life. As the call for a circular, biobased economy is getting louder and louder we are working on solutions to make a reality. We run applied research programmes, support the transition in private-public partnership projects and offer numerous bio-economy courses. Now we invite you to make change happen with us. Join the ReThink Waste Challenge and make a difference!

Important Dates

Registration deadline

1 January 2023
Kick-off event

End January
First selection

End February
Sprint day

Half March
Sprint day

Half April
Second selection

End May
Grand Finals

End June

Partners & participants about the Challenge


Clean aviation fuel from waste wood and tomato stems

The aviation sector must work hard to reduce CO2 emissions. One way to achieve this is to replace standard aviation fuel (kerosene) with sustainable fuel. Wageningen Food & Biobased Research is working with private sector partners on developing...

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After the challenge - Winnie Akara

For nine months Winnie and her team SAHARA worked on their project PAWABOX and reached the Grand Finale, emerging 3rd out of the total 6 participants in the prototype division of the challenge. How does life go after the Re-Think Protein Challenge&...

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Winners UGC: “After nine months of working together, friendships for life have been forged”

Their Masters graduation thesis mentor asked them if they were interested to participate in the Urban Greenhouse Challenge. And then, one day in September 2021, Eren Gözde Anil and Sarah Hoogenboom met with seven other students who responded t...

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The ReThink Waste is organized by Wageningen University & Research with support of a broad network of partners.