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AMBIENTE: Casas de banho ecológicas podem salvar vidas (1) infographic
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Bill Gates quer reinventar a casa de banho

11/08/2018
Graphic News

November 6, 2018 -- Bill Gates tem vindo a promover novas abordagens para esterilizar os resíduos humanos na Exposição da Casa de Banho Reinventada em Pequim. Uma alternativa é o sistema de tratamento de resíduos domésticos e águas sujas em ciclo fechado da Caltech – um recente vencedor do prémio “Reinventar a Casa de Banho” da sua fundação.

The Bill & Melinda Gates Foundation has spent $200 million over the last seven years, funding sanitation research projects, including 20 toilet and sludge-processing designs that convert human waste into clean water and fertiliser.

Gates finds one approach from the California Institute of Technology particularly interesting. It’s an electrochemical reactor which can break down water and human waste into fertiliser and hydrogen – which in turn can can be stored in fuel cells as energy.

For every dollar invested in sanitation, about $5.50 is returned to the global economiy, according to the World Health Organisation.


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