Sentences with phrase «of fly ash»

According to Wikipedia, it's a type of drywall manufactured in China out of fly ash from coal - fired power plants.

3 % of the fly ash gets into the air.

Fine particulate matter (PM10 and PM2.5) is released into the air in the form of fly ash.

For every tonne of fly ash used for a tonne of portland cement (the most common type of cement in general use around the world) approximately one tonne of carbon dioxide is prevented from entering the earth's atmosphere.

Project Drawdown defines alternative cement as: the use of an increased percentage of fly ash instead of Portland cement in concrete.

U.S. power plants produce millions of tons of fly ash annually, which is usually dumped in landfills.

But there are wider and more long - lived traces too, in the form of changed patterns of carbon isotopes (absorbed by every living thing) and in tiny, virtually indestructible particles of fly ash released from furnaces and chimneys.

Tens of billions of tons of concrete are part of that signature, along with vast amounts of smelted aluminum and more exotic alloys, distinctive spherical particles of fly ash from power plants, bomb radioisotopes, 6 billion tons (and counting) of plastic, and so much more.

Plants grown with smaller amounts of fly ash have fared much better.

Crops grown in quantities of fly ash ranging from 5 to 20 percent of soil weight absorbed toxic metals, according to a study by Indiana State University researchers.

The company uses 250 tons of fly ash per day to mix with bio-solids, said Raymond Mayo, Florida N - Viro plant manager.

The U.S. Geological Survey (USGS) maintains an online database of fly ash — based uranium content for sites across the U.S..

In a 1978 paper for Science, J. P. McBride at Oak Ridge National Laboratory (ORNL) and his colleagues looked at the uranium and thorium content of fly ash from coal - fired power plants in Tennessee and Alabama.

The walls are of concrete block with a high content of fly ash, a waste product of coal - fired electric power generation that can be recycled as a replacement for portland cement.

Not exact matches

Its last remaining scheduled carrier, Air Canada Jazz (created, ironically, from the ashes of Air Ontario), had essentially given up on it, flying fewer than 100,000 passengers through it annually.

It's got ta compete with agriculture, transportation (transporting the fly - ash isn't free either), other forms of manufacturing.

It is possible that the creation of cement will not be as bad as the pollution from coal - mining; however, in regards to «With the elimination of fly - ash alternatives, cement creation will quickly be the leading cause of green house gases» — If it is a top creator now, and we increase the usage, would you not expect it to climb the list?

With the elimination of fly - ash alternatives, cement creation will quickly be the leading cause of green house gases.

For those not aware, fly - ash is a biproduct of coal mining that is used as a substitute for cement in concrete mixes.

Fly - ash's chemical reaction is much less aggressive than that of cement, and so sets up significantly slower.

You're suggesting the end of fly - ash in cement production will make it leap frog electricity, agriculture, transportation, and more.

While straight cement is definitely a stronger mix, fly - ash mixes get the job done easily surpassing code requirements; and, from a finisher's perspective, are much easier to get on grade, stay ahead of, and put a good finish on.

A large issue is the production of fly - ash.

Because of the incident, Stokes has not flown to Australia with the England squad in October for the current Ashes series as the England and Wales Cricket Board (ECB) said the player would not be selected «at this stage».

View a slide show of the world's first carbon capture and storage facility in operation The small stream of flue gas travels to the carbon - capture unit through plastic pipes reinforced with fiberglass and is cooled to between — 1 and 21 degrees Celsius from the 55 - degree C temperature at which it emerges from the other environmental technology add - ons that strip out the fly ash, sulfur dioxide and nitrogen oxides.

The sentence marked with an asterisk was changed from «In fact, fly ash — a by - product from burning coal for power — and other coal waste contains up to 100 times more radiation than nuclear waste» to «In fact, the fly ash emitted by a power plant — a by - product from burning coal for electricity — carries into the surrounding environment 100 times more radiation than a nuclear power plant producing the same amount of energy.»

At one extreme, the scientists estimated fly ash radiation in individuals» bones at around 18 millirems (thousandths of a rem, a unit for measuring doses of ionizing radiation) a year.

Fly ash is also disposed of in landfills and abandoned mines and quarries, posing a potential risk to people living around those areas.

Robert Finkelman, a former USGS coordinator of coal quality who oversaw research on uranium in fly ash in the 1990s, says that for the average person the by - product accounts for a miniscule amount of background radiation, probably less than 0.1 percent of total background radiation exposure.

«In the very top of these sediment cores we take, we get these fly ash indicators,» explains Leeds geologist Graeme Swindles, lead author of a paper published in Scientific Reports on May 28 (Scientific American and Scientific Reports are part of Nature Publishing Group.)

Scientists drilling ice cores out of Greenland have found lead from fly ash, a byproduct of coal combustion, dating back to the era.

That soot, fly ash or whatever you want to call it is borne aloft by the hot gases of combustion before settling gently back to Earth in lungs, into lakes and the sea or onto the landscape.

«Traces of pollution, fly ash particles coming in, evidence of recent climate change — all the records from that site basically look like hockey sticks.»

To reduce use on Portland cement, the material responsible for 7 percent of global CO2 emissions, Bullitt uses fly ash (a waste product of coal burning) to create cement.

Saudi Arabia doesn't have any fly ash, but it has mountains of pozzolan.»

Prata says sensors like those he is developing at the Norwegian Institute for Air Research (NILU) in Kjeller could keep planes flying by letting them finesse the educated guesses of models to reveal ash - free patches and routes.

On June 17 the volcano began hurling clouds of ash and billowing smoke 20,000 feet into the atmosphere; chunks of molten rock, some of them reportedly the size of cars, flew hundreds of feet.

Most solutions involve pumping some combination of mud or fly ash combined with an inert gas or water, but the mixture does not always flow thoroughly enough to cover the burning coal, and it can crack when dried, allowing oxygen to get back in.

Landfills in Korea accumulate more than 250,000 tons of oyster shells each year, while coal - fired power plants churn out just as much fly ash.

For some of the captured contaminants, like fly ash, this is a straightforward matter of burying the waste in a landfill.

The Polk plant captures all its fly ash, 98 percent of its sulfur — which causes acid rain — and nearly all its nitrogen oxides, the main component of the brown haze that hangs over many cities.

The zircon flies out of the crust in a luminous whirlwind of hot gas and rock and is dumped in a thick layer of volcanic ash.

However, fly ash contains various amounts of toxic metals.

Fly ash is a fine powder recovered from gases created by the burning of coal.

In addition to traditional asphalt concrete and cement concrete, the researchers also assessed several other material alternatives, such as reflective coatings and the use of industrial waste products like slag and fly ash, to replace some of the energy - intensive cement in cement concrete.

Fly Ash Bricks In the process of generating electricity, U.S. coal plants spew more than 70 million tons a year of a radioactive waste called fly aFly Ash Bricks In the process of generating electricity, U.S. coal plants spew more than 70 million tons a year of a radioactive waste called fly afly ash.

That, despite the fact that a 2005 study by James Sherwood, director of the University of Massachusetts Lowell Baseball Research Center, found no evidence that a baseball hit by a maple bat flew farther than a baseball hit by an ash bat.

«Much of the research to date and the state - of - practice pertaining to sustainable use of structural concrete has focused on the partial replacement of cement with industrial byproducts, such as fly ash, slag and silica fume,» Kurama said.

The proposed technology is also designed to be part of a vitrification process for coal fly ash to reduce metal leaching.

Using the Saharan Air Layer as a proxy for volcanic ash, the test aircraft will now fly over the Atlantic Ocean west of Morocco to prove the equipment can detect the fine particles of sand at altitudes of up to 20,000 feet and a distance of around 100 km.