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Tag: recycled

Recycled concrete could reduce pressure on landfills

Recycled concrete could reduce pressure on landfills

Science
Nov. 30 (UPI) -- In a new study, researchers have confirmed recycled concrete works just as well as concrete, and for some purposes, even better. The findings, published Monday in the journal Construction and Building Materials, could help keep rubble out the landfill. Advertisement For the study, engineers poured recycled cement to lay a building's foundation and a pave a municipal sidewalk. Researchers kept tabs on the material structures over a five year period. Both the foundation and sidewalk proved as strong and durable as similar structures built using traditional cement. "We live in a world where we are constantly in search of sustainable solutions that remove waste from our landfills," lead researcher Shahria Alam said in a news release. "A number of countries around the world h...
Aged, recycled urine may be safe alternative to traditional fertilizer

Aged, recycled urine may be safe alternative to traditional fertilizer

Science
Jan. 24 (UPI) -- Recycled and aged human urine is a safe alternative to traditional fertilizers. According to new research from the University of Michigan, bacteria in recycled and aged urine can't transfer antibiotic resistance capabilities to bacteria in the soil, making it potentially usable. Traditional fertilizers like nitrogen and phosphorous contribute to water pollution. When the fertilizers are washed into local waterways, the nutrient overload can trigger algal blooms that produce toxins and depress oxygen levels. The production of traditional fertilizers is also expensive and energy intensive. Recycled urine could be used as a more eco-friendly alternative to traditional fertilizers, but safety concerns remain, researcher say. "Urine contains compounds that contain nitrogen, ...
Recycled packaging 'may end up in landfill', warns watchdog

Recycled packaging 'may end up in landfill', warns watchdog

Science
You try to be virtuous, wiping the curdling yoghurt off a plastic pot, then putting it in the recycling bin. Perhaps you envisage the pot eventually re-incarnated as a frisbee or maybe even a plastic bench.But don’t rest easy. Your pot might get burned or buried in landfill, and you’d never know.The National Audit Office (NAO) says over half of the packaging reported as recycled is actually being sent abroad to be processed. As a result, it says, the government has little idea of whether the recyclables are getting turned into new products, buried in landfill or burned. While an illusion of success has been created by the UK’s system for recycling packaging, the NAO says, the reality may be quite different.Its r...
Improperly recycled refrigerators not enough to explain rise in ozone-eating gas

Improperly recycled refrigerators not enough to explain rise in ozone-eating gas

Science
May 24 (UPI) -- Despite reports that improperly recycled refrigerators in China could explain a recent uptick in chlorofluorocarbon emissions, NOAA scientist Steve Montzka suggests the new mystery source of CFC-11 remains unaccounted for. Earlier this month, Montzka and his colleagues identified rising levels of CFC-11, a common chlorofluorocarbon, in air samples collected in Hawaii. Emissions had been dropping globally over the last two decades. The rise in CFC-11 concentrations first showed up in 2013, suggesting the chemical's proliferation can be explained by a new source -- a source scientists think is located somewhere in East Asia. Chlorofluorocarbons like CFC-11 were used in a variety products, including refrigerators and air-conditioners, for decades before being phased out beca...
SpaceX has launched recycled spacecraft

SpaceX has launched recycled spacecraft

Technology
SpaceX has launched its first ever completely recycled spacecraft from Cape Canaveral in Florida.The technology company broke new ground by flying a Falcon 9 rocket and Dragon spacecraft that had both been used before.The recycled rocket doesn't add any extra risk, according to NASA's International Space Station manager, Kirk Shireman.But the launch was "still a dangerous business", he said, and although the Falcon 9 has been extensively inspected by NASA's experts, there is never "zero risk" when it comes to rocket launches.Minutes after launch, the Falcon 9 first stage landed successfully after delivering the Dragon into orbit. Its landing back at Cape Canaveral marked SpaceX's 20th recovery of a first stage booster.Image:The Falcon 9 first stage landed successfully. Pic: SpaceXThis was ...