The ash of incinerated sewage sludge can be made into synthetic stone, says
Tsukishima Kikai Company of Tokyo. The ash is blended with up to 20 per cent
silica, alumina and lime, and then mixed and degassed at 1200 to 1300 °C to
produce glass-like stones. Subsequent reheating converts the material to
Ecorock, a building material that can withstand up to 4.5 times as much bending
force as granite or marble. The company is building a $25 million plant
at Suwa to make Ecorock commercially.
More from New ¾«¶«´«Ã½
Explore the latest news, articles and features
Popular articles
Trending New ¾«¶«´«Ã½ articles
1
The Selfish Gene at 50: Why Dawkins’s evolution classic still holds up
2
Photos reveal unexpected details from the world's first atomic test
3
Mystery of the ancient giant stone jars of Laos may have been solved
4
After news about Oliver Sacks's "lies", we revisit his best-loved book
5
Can we harness quantum effects to create a new kind of healthcare?
6
We may finally know why dinosaurs like T. rex evolved tiny arms
7
The ‘doomsday’ glacier’s giant ice shelf is about to break away
8
Less nostalgia, more pain: scientists study 1763 Eurovision songs
9
The distant world that is our best hope of finding alien life
10
Women’s body temperature rises from age 18 to 42 but we don’t know why