Ví dụ về việc sử dụng Acid mine drainage trong Tiếng anh và bản dịch của chúng sang Tiếng việt
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Acid mine drainage in the Rio Tinto River.
Metagenomic study of acid mine drainage.
For this reason, acid mine drainage is considered a serious long-term environmental problem associated with mining.
This break down is the main driver of acid mine drainage.
Rocks stained by acid mine drainage on Shamokin Creek.
Lithotrophs also associate with the modern-day issue of acid mine drainage.
List of selected acid mine drainage sites worldwide.
Thus, copper mines are often major culprits of acid mine drainage.
This list includes both mines producing acid mine drainage and river systems significantly affected by such drainage. .
They would besuitable for relatively small flows or less complex acid mine drainage.
Recycling scrap metal also reduces acid mine drainage, a form of water pollution.
Thus, issues associated with mining like can be avoided, like acid mine drainage.
Although a host of chemical processes contribute to acid mine drainage, pyrite oxidation is by far the greatest contributor.
Cation exchange processes havepreviously been investigated as a potential treatment for acid mine drainage.
In this application,a slurry of lime is dispersed into a tank containing acid mine drainage and recycled sludge to increase water pH to about 9.
Tailings piles or ponds, mine waste rock dumps,[3]and coal spoils are also an important source of acid mine drainage.
By far,the most commonly used commercial process for treating acid mine drainage is lime precipitation in a high-density sludge(HDS) process.
Historically, the acidic discharges from active orabandoned mines were called acid mine drainage, or AMD.
In Canada, work to reduce the effects of acid mine drainage is concentrated under the Mine Environment Neutral Drainage(MEND) program.
In that vessel, clean water will overflow for release, whereas settled metal precipitates(sludge)will be recycled to the acid mine drainage treatment tank, with a sludge-wasting side stream.
Our knowledge of acidophiles in acid mine drainage remains rudimentary: we know of many more species associated with ARD than we can establish roles and functions.
With the advance of Large-scale sequencing strategies,genomes of microorganisms in the acid mine drainage community are directly sequenced from the environment.
Organisms which cause acid mine drainage can thrive in waters with pH very close to zero. Negative pH occurs when water evaporates from already acidic pools thereby increasing the concentration of hydrogen ions.
However, the archaea that do this, such as Sulfolobus, produce sulfuric acid as a waste product,and the growth of these organisms in abandoned mines can contribute to acid mine drainage and other environmental damage.
Acid mine drainage, acid and metalliferous drainage(AMD), oracid rock drainage(ARD) refers to the outflow of acidic water from metal mines or coal mines. .
The nearly full genomic constructs allows new understanding of the community and able to reconstruct their metabolic pathways.[25]Our knowledge of Acidophiles in acid mine drainage remains rudimentary: we know of many more species associated with ARD than we can establish roles and functions.
When the pH of acid mine drainage is raised above 3, either through contact with fresh water or neutralizing minerals, previously soluble iron(III) ions precipitate as iron(III) hydroxide, a yellow-orange solid colloquially known as yellow boy.
When the pH of acid mine drainage is raised past 3, either through contact with fresh water or neutralizing minerals, previously soluble iron(III) ions precipitate as iron(III) hydroxide, a yellow-orange solid colloquially known as yellow boy.[10] Other types of iron precipitates are possible, including iron oxides and oxyhydroxides.
About half of the coal mine discharges in Pennsylvania have pH under 5.[9] However,a significant portion of mine drainage in both the bituminous and anthracite regions of Pennsylvania is alkaline, because limestone in the overburden neutralizes acid before the drainage emanates.
For example, government officials have determined that acid drainage at the Golden Sunlight mine will continue for thousands of years.