News tagged with heavy metals
Researchers identify mysterious life forms in the extreme deep sea (w/ video)
(PhysOrg.com) -- A summer research expedition organized by scientists at Scripps Institution of Oceanography at UC San Diego has led to the identification of gigantic amoebas at one of the deepest locations ...
Space & Earth / Earth Sciences
Oct 23, 2011 |
4.7 / 5 (23) |
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Novel device removes heavy metals from water
An unfortunate consequence of many industrial and manufacturing practices, from textile factories to metalworking operations, is the release of heavy metals in waterways. Those metals can remain for decades, even centuries, ...
Dec 16, 2011 |
5 / 5 (13) |
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Inventors say Hydra offers clean water, hope for villages
The hose took brownish water from the scummy Schuylkill River in Philadelphia to a strange apparatus on the bank -- a trailer with a solar panel, a hydrogen tank, and other odd parts with flashing digital readouts.
Jul 05, 2010 |
4.1 / 5 (14) |
3
Researcher uses bacteria to make radioactive metals inert
The Lost Orphan Mine below the Grand Canyon hasn't produced uranium since the 1960s, but radioactive residue still contaminates the area. Cleaning the region takes an expensive process that is only done in ...
Sep 08, 2009 |
4.1 / 5 (14) |
16
World's first magnetic soap produced
Scientists from the University of Bristol have developed a soap, composed of iron rich salts dissolved in water, that responds to a magnetic field when placed in solution. The soap's magnetic properties were ...
Jan 23, 2012 |
4.9 / 5 (10) |
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World's most efficient flexible OLED on plastic created
(PhysOrg.com) -- Engineering researchers at the University of Toronto have developed the world's most efficient organic light-emitting diodes (OLEDs) on plastic. This result enables a flexible form factor, not to mention ...
Oct 31, 2011 |
4.8 / 5 (10) |
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Researchers transform carbon dioxide into methanol
Scientists at Singapore's Institute of Bioengineering and Nanotechnology (IBN) have succeeded in unlocking the potential of carbon dioxide - a common greenhouse gas - by converting it into a more useful product.
Apr 16, 2009 |
3.8 / 5 (11) |
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Disposal of spilled coal ash a long, winding trip
(AP) -- More than a year after a Tennessee coal ash spill created one of the worst environmental disasters of its kind in U.S. history, the problem is seeping into several other states.
Mar 05, 2010 |
4.7 / 5 (9) |
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Scientists urge halt to road through Serengeti
(PhysOrg.com) -- Scientists have appealed for a halt to plans to build a road through the Serengeti National Park in Tanzania in 2012, saying it will be an environmental disaster.
Sep 17, 2010 |
3.6 / 5 (11) |
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China rice laced with heavy metals: report
Up to 10 percent of rice grown in China is contaminated with harmful heavy metals but little has been done to highlight the possible public health risks, a report said.
Feb 16, 2011 |
5 / 5 (7) |
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To boldly go where no glass has gone before
QUT's first foray into space is bound to be a giant step for mankind. Dr Martin Castillo from Queensland University of Technology's (QUT) Science and Engineering Faculty, and researcher for the university's ...
Mar 30, 2012 |
4.7 / 5 (7) |
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The worm that turned on heavy metal
Researchers in South America have studied the viability of using earthworms to process hazardous material containing high concentrations of heavy metal for the bioremediation of old industrial sites, landfill and other potentially ...
Dec 06, 2010 |
5 / 5 (6) |
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Banana peels get a second life as water purifier
To the surprisingly inventive uses for banana peels — which include polishing silverware, leather shoes, and the leaves of house plants — scientists have added purification of drinking water contaminated with potentially ...
Mar 09, 2011 |
5 / 5 (6) |
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Bacteria from the deep can clean up heavy metals
A species of bacteria, isolated from sediments deep under the Pacific Ocean, could provide a powerful clean-up tool for heavy metal pollution.
Jun 05, 2009 |
4.8 / 5 (6) |
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Suzaku spies treasure trove of intergalactic metal
Every cook knows the ingredients for making bread: flour, water, yeast, and time. But what chemical elements are in the recipe of our universe?
Dec 02, 2009 |
4.7 / 5 (6) |
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Heavy metal (chemistry)
A heavy metal is a member of an ill-defined subset of elements that exhibit metallic properties, which would mainly include the transition metals, some metalloids, lanthanides, and actinides. Many different definitions have been proposed—some based on density, some on atomic number or atomic weight, and some on chemical properties or toxicity. The term heavy metal has been called "meaningless and misleading" in an IUPAC technical report due to the contradictory definitions and its lack of a "coherent scientific basis". There is an alternative term toxic metal, for which no consensus of exact definition exists either. As discussed below, depending on context, heavy metal can include elements lighter than carbon and can exclude some of the heaviest metals. Heavy metals occur naturally in the ecosystem with large variations in concentration. Nowadays anthropogenic sources of heavy metals, i.e. pollution, have been introduced to the ecosystem. Waste derived fuels are especially prone to contain heavy metals so they should be a central concern in a consideration of their use.
For more information about Heavy metal (chemistry), read the full article at
Wikipedia.
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