Student - March 29, 2007

Lettinga awarded Tyler Prize

Emeritus chair of Environmental Technology Professor Gatze Lettinga will receive the Tyler Prize in Los Angeles on Friday 20 April. He was awarded the prize – 200 thousand dollars and a gold medal – for his contribution to environmental protection.

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Lettinga is pleased with the award. ‘It is recognition for all the work we have done. I hope that it’s also a sign of a trend in America towards using more sustainable environmental technology,’ says Lettinga. His research on anaerobic water treatment and biogas production has led to efficient and environment-friendly technology being used all over the world for treating waste and wastewater.

Lettinga is known for designing the Upflow Anaerobic Sludge Blanket (UASB) reactor, which treats industrial wastewater anaerobically. There are now more than two thousand of these reactors and its successor the Expanded Granular Sludge Bed (EGSB) in use throughout the world.

Most of the prize money will be transferred to the Lettinga Associates Foundation (LeAF), which promotes the development and implementation of sustainable waste processing technology. Lettinga: ‘I shall make sure that as little as possible goes to the taxman.’

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