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| Version 1 | Version 2 |
|---|---|
| Machine turns sweat into drinking water for Unicef | Machine turns sweat into drinking water for Unicef |
| (about 17 hours later) | |
| A machine that takes sweat-laden clothes and turns the moisture into drinking water is in use in Sweden. | A machine that takes sweat-laden clothes and turns the moisture into drinking water is in use in Sweden. |
| The device spins and heats the material to remove the sweat, and then passes the vapour through a special membrane designed to only let water molecules get through. | The device spins and heats the material to remove the sweat, and then passes the vapour through a special membrane designed to only let water molecules get through. |
| Since its Monday launch, its creators say more than 1,000 people have "drunk other's sweat" in Gothenburg. | Since its Monday launch, its creators say more than 1,000 people have "drunk other's sweat" in Gothenburg. |
| They add the liquid is cleaner than local tap water. | They add the liquid is cleaner than local tap water. |
| The device was built for the United Nation's child-focused charity Unicef to promote a campaign highlighting the fact that 780 million people in the world lack access to clean water. | The device was built for the United Nation's child-focused charity Unicef to promote a campaign highlighting the fact that 780 million people in the world lack access to clean water. |
| Moist cyclists | Moist cyclists |
| The machine was designed and built by engineer Andreas Hammar, known locally for his appearances on TV tech show Mekatronik. | The machine was designed and built by engineer Andreas Hammar, known locally for his appearances on TV tech show Mekatronik. |
| He said the critical part of the sweat machine was a new water purification component developed by a company named HVR in collaboration with Sweden's Royal Institute of Technology. | He said the critical part of the sweat machine was a new water purification component developed by a company named HVR in collaboration with Sweden's Royal Institute of Technology. |
| "It uses a technique called membrane distillation," he told the BBC. | "It uses a technique called membrane distillation," he told the BBC. |
| "We use a substance that's a bit like Goretex that only lets steam through but keeps bacteria, salts, clothing fibres and other substances out. | |
| "They have something similar on the [International] Space Station to treat astronaut's urine - but our machine was cheaper to build. | "They have something similar on the [International] Space Station to treat astronaut's urine - but our machine was cheaper to build. |
| "The amount of water it produces depends on how sweaty the person is - but one person's T-shirt typically produces 10ml [0.3oz], roughly a mouthful." | "The amount of water it produces depends on how sweaty the person is - but one person's T-shirt typically produces 10ml [0.3oz], roughly a mouthful." |
| The kit has been put on show at the Gothia Cup - the world's largest international youth football tournament. | The kit has been put on show at the Gothia Cup - the world's largest international youth football tournament. |
| Mattias Ronge, chief executive of Stockholm-based advertising agency Deportivo - which organised the stunt - said the machine had helped raise awareness for Unicef, but in reality had its limitations. | Mattias Ronge, chief executive of Stockholm-based advertising agency Deportivo - which organised the stunt - said the machine had helped raise awareness for Unicef, but in reality had its limitations. |
| "People haven't produced as much sweat as we hoped - right now the weather in Gothenburg is lousy," he said. | "People haven't produced as much sweat as we hoped - right now the weather in Gothenburg is lousy," he said. |
| "So we've installed exercise bikes alongside the machine and volunteers are cycling like crazy. | "So we've installed exercise bikes alongside the machine and volunteers are cycling like crazy. |
| "Even so, the demand for sweat is greater than the supply. And the machine will never be mass produced - there are better solutions out there such as water purifying pills." | "Even so, the demand for sweat is greater than the supply. And the machine will never be mass produced - there are better solutions out there such as water purifying pills." |