This is hot. aerial photo of explosive Viti crater in Iceland near the Krafla geothermal field well.
W.Elders et al., Geothermal 49 (January 2014) © 2013 Elsevier Ltd.
Ranges The host some of the most contaminated soils of the planet. toxic lead and copper lost balls can leach into the ground, threatening the ground water, killing germs and poison plants. Cleaning the soil is often too expensive for operators of military and private channels. Now Korean scientists have created a natural blend that sops up almost all metals: pulverized oyster shells and fly ash, soot particles spewed by burning. Korea dumps accumulate over 250,000 tons of oyster shells per year, while coal power plants churn as much fly ash. By combining the two waste products creates a rich concoction of minerals that hinder the metal ions in tight molecular bonds, the reports of the team this month in Environmental geochemistry and health . By mixing different ratios of ingredients firing range of highly contaminated soil now nearly seven times the amount of lead considered hazardous by the US Environmental Protection Agency researchers identified a unique blend that encloses 98% of lead contamination leachable and 96% copper. Other floor-scrubbing techniques exist, but the approach shells and-ash is much cheaper and more sustainable, the scientists say.
See Science Shots.
0 Komentar