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    Home»World»Bill Gates gets serious about crap

    Bill Gates gets serious about crap

    World By Agency Staff6 November 2018
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    Bill Gates

    Bill Gates thinks toilets are a serious business, and he’s betting big that a reinvention of this most essential of conveniences can save a half million lives and deliver US$200-billion-plus in savings.

    The billionaire philanthropist, whose Bill & Melinda Gates Foundation spent $200-million over seven years funding sanitation research, showcased some 20 novel toilet and sludge-processing designs that eliminate harmful pathogens and convert bodily waste into clean water and fertiliser.

    “The technologies you’ll see here are the most significant advances in sanitation in nearly 200 years,” Gates, 63, told the Reinvented Toilet Expo in Beijing on Tuesday.

    I never thought that Melinda would have to tell me to stop talking about toilets and fecal sludge at the dinner table

    Holding a beaker of human excreta that, Gates said, contained as many as 200 trillion rotavirus cells, 20 billion Shigella bacteria, and 100 000 parasitic worm eggs, the Microsoft co-founder explained to a 400-strong crowd that new approaches for sterilising human waste may help end almost 500 000 infant deaths and save $233-billion annually in costs linked to diarrhoea, cholera and other diseases caused by poor water, sanitation and hygiene.

    One approach from the California Institute of Technology that Gates said he finds “super interesting” integrates an electrochemical reactor to break down water and human waste into fertiliser and hydrogen, which can be stored in hydrogen fuel cells as energy.

    Without cost-effective alternatives to sewers and waste-treatment facilities, urbanisation and population growth will add to the burden. In some cities, more than half the volume of human waste escapes into the environment untreated. Every dollar invested in sanitation yields about $5.50 in global economic returns, according to the World Health Organisation.

    ‘Health benefits’

    “Human waste that is properly handled can be a very economically attractive investment due to the health benefits,” said Guy Hutton, a senior adviser for water, sanitation and hygiene with Unicef in New York, in an interview. “Given the unmet need of 2.3 billion people still without basic sanitation, there is a potentially very substantial market and economic gain to be had.”

    The reinvented toilet market, which has attracted companies including Japan’s LIXIL Group, could generate $6-billion/year worldwide by 2030, according to Gates.

    “Innovative companies have a golden opportunity to do well by doing good,” LIXIL President Kinya Seto said in a statement. “We can help jump-start a new era of safe sanitation for the 21st century by developing solutions that can leapfrog today’s existing infrastructure, functioning anywhere and everywhere.”

    “The value of those outputs exceeds the operating cost. So you’ll actually be looking for sources of biomass that keep it fully busy

    The initial demand for the reinvented toilet will be in places like schools, apartment buildings and community bathroom facilities. As adoption of these multi-unit toilets increases, and costs decline, a new category of reinvented household toilets will become available, the Gates Foundation said.

    “Our goal is to be at $0.05/day of cost,” Gates said in a telephone interview before the exhibition. Small-scale waste treatment plants, called omni-processors, may be suited for uses beyond human waste management — such as for managing effluent from intensive livestock production — because of its low marginal running costs relative to the value of the fertilizer and clean water it produces, he said.

    “The value of those outputs exceeds the operating cost,” Gates said. “So you’ll actually be looking for sources of biomass that keep it fully busy.”

    Gates, who with wife Melinda has given more than $35.8-billion to the foundation since 1994, said he became interested in sanitation about a decade ago after he stopped working full time at Microsoft.

    “I never imagined that I’d know so much about poop,” Gates said in remarks prepared for the Beijing event. “And I definitely never thought that Melinda would have to tell me to stop talking about toilets and fecal sludge at the dinner table.”  — Reported by Jason Gale, (c) 2018 Bloomberg LP

    Bill Gates Melinda Gates Microsoft
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