石墨烯薄片让污水瞬间变成可饮用水

waterok

来自澳大利亚的研究组织 CSIRO发明了通过使用石墨烯薄片特性的简易污水过滤方式，利用微观纳米通道能让水通过，但能阻隔污染物的特性净化污水。目前科学家通过全新设计的石墨烯材料已经把悉尼港的污水净化成可安全饮用的水，而且这种滤水方式相对传统方式要便宜、快速和环保。

Could you soon drink from Sydney Harbour? Scientist develop ingenious way to purify the polluted water

• CSIRO scientists have developed a new way to purify polluted water
• In a single step the technology can create clean drinking water
• The new technology could be life saving for billions around the world
  
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By Australian Associated Press and Sahar Mourad For Daily Mail Australia

PUBLISHED: 02:18 GMT, 15 February 2018 | UPDATED: 10:10 GMT, 15 February 2018

Drinking from Sydney Harbour could soon be a reality as CSIRO scientists have developed a new way to purify water that could save lives all around the world.

CSIRO scientists developed a new water filter membrane known as Graphene which is so effective that water samples from the harbour were safe to drink after passing through it.

The graphene membrane is made of a single layer of carbon and could eventually replace current multi-stage processes with just a single step.

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Dr Seo and his team developed new technology which can purify polluted water

The Graphair creates clean drinking water in a single step

'Our team’s ultimate goal is to use Graphair to create a single step water purification technology that works regardless of what the contaminant is and how much of it is there is,' Dr Seo told Daily Mail Australia.

'We came up with the idea for the new graphene membrane by pure chance.

'Usually, graphene films are known to be impermeable to water, but we detected water passing through our special graphene film known as 'GraphAir' in 2016.

'This paved the way for the experiments that have now shown this remarkable and entirely unexpected membrane performance.'

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Looking for a challenge, Dr Seo and his colleagues took a water sample from Sydney Harbour to test Graphair.

Researchers from QUT, University of Sydney, UTS, and Victoria University then tested and analysed the the water's purification qualities, and confirmed Graphair's water purification qualities.

It was found that when the Graphair was added, the membrane filtered even more contaminants faster.

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CSIRO scientists tested Graphair with Sydney Harbour water with results showing purification qualities

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The Graphair membrane can save billions of lives around the world

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A State of the Beaches annual report released in October 2017, showed one in six areas sampled in the greater Sydney area had enough enterococci bacteria to be graded fair to very poor.

The report also revealed estuarine beaches in Sydney such as Rose Bay and Riverview's Tambourine Bay, have recorded poor ratings, due to issues with contaminants flushed out after heavy rainfall or sewerage problems.  

Dr Seo hopes this breakthrough research can be developed for use as a town's water supply filtering system.

With almost 2.1 billion people around the world, a third of the world's population, this research could be life saving as a result of providing clean water.

'Eventually, we’d like the technology to be able to filter a home or even town’s water supply,' Dr Seo said.

'As it’s a simpler, quicker and more effective way to remove water it could be of great benefit to less developed communities that struggle with providing clean water.'

The CSIRO team is hoping to commence more trials in a developing-world community next year.   

The breakthrough research was published on Thursday in Nature Communications.

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Read more: http://www.dailymail.co.uk/news/article-5393579/CSIRO-scientists-develop-new-way-purify-polluted-water.html#ixzz57XIlTKAq
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