Quantcast

Latest Sulfide Stories

2011-08-02 19:31:07

Hydrogen sulfide is a foul-smelling gas with an odor resembling that of rotten eggs. Sometimes called "swamp gas," this toxic substance is generally associated with decaying vegetation, sewers and noxious industrial emissions. And "” as odd as it may seem "” it also plays a critical role in protecting blood vessels from the complications of diabetes, according to a new study from the University of Texas Medical Branch at Galveston. In the last few years, work from several...

2011-03-11 14:38:22

ASSR could reduce amount of heat needed in purification process Natural gas extracted from the nation's coal beds and methane-rich geologic features must first be purged of hydrogen sulfide before it can be used as fuel. Until now, processing methods have often proved to be inefficient, requiring large amounts of heat. But a team of Battelle researchers at the Department of Energy's Pacific Northwest National Laboratory has discovered a method that could dramatically cut the amount of heat...

8430c27116714d8127a9f7a14f6b7e8c
2011-01-11 08:30:00

New findings from UC Riverside-led team alter traditional ideas about ancient ocean chemistry Geologists at the University of California, Riverside have found chemical evidence in 2.6-billion-year-old rocks that indicates that Earth's ancient oceans were oxygen-free and, surprisingly, contained abundant hydrogen sulfide in some areas. "We are the first to show that ample hydrogen sulfide in the ocean was possible this early in Earth's history," said Timothy Lyons, a professor of...

2010-10-21 14:58:17

Converting acid rain chemicals into useful products Power plants that burn fossil fuels remain the main source of electricity generation across the globe. Modern power plants have scrubbers to remove sulfur compounds from their flue gases, which has helped reduce the problem of acid rain. Now, researchers in India have devised a way to convert the waste material produced by the scrubbing process into value-added products. They describe details in the International Journal of Environment and...

158eaa961059ec8da8f0194a488c7e041
2010-03-20 13:19:20

Composites are combinations of materials that produce properties inaccessible in any one material. A classic example of a composite is fiberglass "“ plastic fibers woven with glass to add strength to hockey sticks or the hull of a boat. Unlike the well-established techniques for producing fiberglass and other macroscale composites, however, there aren't general schemes available for making nanoscale composites. Now,  researchers at Berkeley Lab's Molecular Foundry, in collaboration...

030243e0fb0406baf279267b037ec8121
2010-02-12 07:46:41

Stratified marine basin sheds new light on early animal evolution, UC Riverside scientists say A research team led by biogeochemists at the University of California, Riverside has developed a detailed and dynamic three-dimensional model of Earth's early ocean chemistry that can significantly advance our understanding of how early animal life evolved on the planet. Working on rock samples from the Doushantuo Formation of South China, one of the oldest fossil beds and long viewed by...

2009-11-24 15:27:00

NEEDHAM, Mass., Nov. 24 /PRNewswire/ -- Environmental Health & Engineering Inc. (EH&E), a leading Massachusetts-based engineering consulting firm, has completed a major indoor air quality study for the U.S. government which found a strong association between the presence of Chinese drywall, low level concentrations of hydrogen sulfide, and corrosion of metals in homes. The drywall issue has affected thousands of homes in the United States for more than two years. The five-month...

2009-08-19 14:47:06

U.S. scientists say they've found organic matter in water and sediment apparently play a key role in helping microbes convert mercury into a dangerous form. The finding by Duke University environmental engineers is said to be important because it could change the way mercury in the environment is measured and therefore regulated. The particular harmful form of the element, known as methylmercury, is a potent toxin for nerve cells, researchers said. When ingested by organisms, it is not...

2009-07-20 14:05:23

University of Leicester researcher probes role of hydrogen sulphide Scientists at the University of Leicester are investigating how the stuff of stink bombs and flatulence could play a critical role in the human reproductive system. Hydrogen sulphide "“partially responsible for the foul odor of stink bombs- is also a toxic gas and has been used for chemical warfare. But research at the University of Leicester is now looking at beneficial effects it has in the body- and the potentially...

2009-03-30 11:31:00

A new, environmentally friendly coating that protects metals against corrosion in seawater has been developed by a team of researchers from Sheffield Hallam University. At the Society for General Microbiology meeting in Harrogate today, (Monday 30 March), Jeanette Gittens and colleagues described how they had encapsulated spores from a bacterium into a sol-gel coating which then protected an aluminium alloy from microbial corrosion.Microbially-influenced corrosion (MIC) of metals at sea is a...


Latest Sulfide Reference Libraries

28_f61a133ae4dae9735d482110e636dcfe
2005-05-26 10:59:49

Galena is a lead ore. This article describes Galena's mineral properties. In its chemically purified form, Galena is known as Lead Sulfide; refer to that article for chemical and industrial uses. Galena is one of the most abundant and widely distributed sulfide minerals, and is the most common ore of lead. Crystals are usually cubic, sometimes octahedral. It is often associated with the minerals sphalerite and fluorite. Galena deposits sometimes contain significant amounts of silver as an...

0_9636208b7e9cc634b05f1e909433c8e6
2005-05-26 08:33:21

Pentlandite is a iron-nickel sulfide, (Fe,Ni)9S8. Pentlandite usually has a Ni:Fe ratio of close to 1:1. It also contains minor cobalt. Pentlandite forms isometric crystals, but is normally found in massive granular aggregates. It is brittle with a hardness of 3.5 - 4 and specific gravity of 4.6 - 5.0 and is non-magnetic. It has a yellowish bronze color. Pentlandite is the chief ore of nickel. Typically associated with pyrrhotite, niccolite, biotite, millerite, pyrite, and chalcopyrite...

28_64ba43868fe5d784d85bf5846bb539ad
2005-05-25 17:25:52

Silver is a chemical element in the periodic table that has the symbol Ag (from the traditional abbreviation from the Latin Argentum) and atomic number 47. A soft white lustrous transition metal, silver has the highest electrical and thermal conductivity of any metal and occurs in minerals and in free form. This metal is used in coins, jewelry, tableware, and photography. Notable characteristics Silver is a very ductile and malleable (slightly harder than gold) univalent coinage metal...

28_1fdafa4c0019ae04c8831263c611c6b5
2005-05-25 11:50:09

Tennantite is a copper arsenic sulfide mineral. Its chemical formula is Cu12As4S13. It is found in hydrothermal veins and contact metamorphic deposits. A closely related mineral, tetrahedrite (Cu12Sb4S13) has antimony substituting for arsenic and the two form a solid solution series. The two have very similiar properties and is often difficult to distinguish between tennantite and tetrahedrite. Iron, zinc, and silver substitute up to about 15% for the copper site. The mineral was named...

More Articles (4 articles) »
Word of the Day
barghest
  • A goblin in English folklore, often appearing in the shape of a large dog and believed to portend imminent death or misfortune.
  • A ghost, wraith, hobgoblin, elf, or spirit.
The origin of 'barghest' is not known, but it may be from perhaps burh-ghest, town-ghost, or German Berg-geist (mountain spirit) or Bär-geist (bear-spirit).
Related