Tag: "chlorine" at biology news
Helping chlorine-eating bacteria clean up toxic waste
... trichloroethylene (TCE). They do this by removing chlorine
atoms from molecules and leaving less-toxic compounds behind. But D. ethenogenes strains work well at some sites and not so well at others, and nobody knows for sure why. In fact, very little is understood about how these organisms live and breath...
New UD technology removes viruses from drinking water
...cess, this natural organic material can react with chlorine
to produce a variety of toxic chemicals called disinfection byproducts. "Our iron-based technology can help ensure drinking-water safety by reducing microbial pathogens and disinfection byproducts simultaneously," Chiu noted. Applications in a...
Record ozone loss during 2006 over South Pole
...f polar stratospheric clouds leads to splitting of chlorine
compounds into highly ozone-reactive radicals that... individual oxygen molecules. A single molecule of chlorine
has the potential to break down thousands of molecules of ozone. The ozone hole, first recognised...
Researchers develop technologies to devour food pathogens
... as current technology. A second innovation uses chlorine
dioxide gas to kill pathogens on produce, fresh fr...wn interest in Bhunia's technology, as well as the chlorine
dioxide work done by Linton and the project's co-leader, Mark Morgan, a professor of food science. ...
UCI scientists find chlorine may contribute to ozone formation
...of predicting air pollution don't take atmospheric chlorine
into account, but the chemical could be responsibl...e area over a two-month period showed that daytime chlorine
gas levels typically measured five parts per trillion or less, but occasionally reached as high as 1...
Scientists find Antarctic ozone hole to recover later than expected
...e Southern Hemisphere. The ozone hole is caused by chlorine
and bromine gases in the stratosphere, an upper la...me, a model combines estimates of future Antarctic chlorine
and bromine levels based on current amounts as captured from NASA satellite observations, NOAA groun...
Anthrax spores may survive water treatment
...nthrax spores in a drinking water system that uses chlorine
as a disinfectant. Though researchers have some k...ve in water with a concentration of 1 milligram of chlorine
per liter (typical tap water has a concentration of 1 to 2 milligrams per liter). After 60 minutes ...
NASA's AURA satellite peers into Earth's ozone hole
..., the ozone hole has gotten larger. Human-produced chlorine
and bromine chemicals can lead to the destruction of ozone in the stratosphere. By international agreement, these damaging chemicals were banned in 1995, and their levels in the atmosphere are decreasing. Another important factor in how much ozone i...
Major new UNC-based drinking water study suggests pregnancy fears may be overstated
...ducts resulting from purifying drinking water with chlorine
boost the chances that pregnant women will miscarry were not supported by the results of a major new study. If such threats exist at all, which is uncertain, they likely are modest, it concludes. The national study, directed by University of North C...