Sentences with phrase «in coal combustion»

Notably, anticipated growth in coal combustion, steel production, gold mining, and disposal of Hg - containing devices may considerably escalate Hg emissions in Asia.

Chemicals called amines can bind to carbon dioxide and to hydrogen sulfide, another pollutant in coal combustion.

Air pollution control devices called scrubbers use a sprayed slurry of ground limestone and water to remove sulfur dioxide from gases formed in coal combustion, said Tom Schmaltz, environmental director for Headwaters Resources, a world leader in coal combustion products.

Not exact matches

Second, many states actively favor renewables in electricity generation, and even in places that don't, the word has gotten out that coal combustion is far deadlier to humans than any other electric generation source — including natural gas.

The analyses show that coal combustion is the single largest source of air pollution - related health impact, contributing to some 366,000 premature deaths in China in 2013, with industry and household combustion as major contributors as well.

Second, analysis of isotopes, which can distinguish among sources of emissions, demonstrates that the majority of the increase in carbon dioxide comes from combustion of fossil fuels (coal, oil and natural gas).

Pretreating with thermal depolymerization also makes coal more friable, so less energy is needed to crush it before combustion in electricity - generating plants.

In a modeling study of coal, oil, and natural gas, Zhang and Caldeira compared the warming caused by combustion to the warming caused by the carbon dioxide released by a single instance of burning, such as one lump of coal, and by a power plant that is continuously burning fuel.

In addition, the extraction of coal, from West Virginia to Wyoming, devastates the physical environment, and its processing and combustion produce gigantic volumes of waste.

Another study, published last year in Reviews of Geophysics, lists the man - made aerosols as coming from sulfates, nitrate and black carbon emitted by internal combustion engines, coal - fired power plants, slash - and - burn agricultural practices, and smoke from cooking.

«As the Clean Air Act and amendments have taken effect there has been a reduction in sulfur emissions from coal combustion, so that the amount of atmospheric sulfur deposited each year is only 25 percent of what it used to be.

Until recently, however, soot's role in warming has been muddied by the effects of another pollutant, sulfate particles generated by coal and petroleum combustion.

The parent compounds involved in this research are polycyclic aromatic hydrocarbons, or PAHs, formed naturally as the result of almost any type of combustion, from a wood stove to an automobile engine, cigarette or a coal - fired power plant.

Diesel combustion in vehicles or coal in power plants creates soot particles, which also contribute to global warming, albeit only briefly as they disappear quickly from the atmosphere.

EnBW participates in the project to further reduce CO2 emission of coal combustion as a bridge technology.

Vattenfall, a Swedish firm, is backing a technology called oxyfuel combustion, which burns coal in a nitrogen - free atmosphere.

The Northwestern development could lead to new thermoelectric devices with potential applications in the automobile industry, glass - and brick - making factories, refineries, coal - and gas - fired power plants, and places where large combustion engines operate continuously (such as in large ships and tankers).

It is the largest component of coal combustion waste, totaling around 70 million tons annually in the United States.

The source of that rain, say the researchers, was coal combustion — the main source of power in southwestern China.

«(B) the nonemissive use, in 2012 or later, of petroleum - based or coal - based liquid or gaseous fuel, petroleum coke, natural gas liquid, or natural gas as a feedstock, if allowances or offset credits were retired for the greenhouse gases that would have been emitted from their combustion; and

In addition, gas combustion is not carbon - free, producing about 60 % of the CO2 produced by coal for the same electrical generation.

The new study, published last week in the journal Environmental Research Letters, showed that emissions of sulfur dioxide, a common air pollutant released during coal and fossil fuel combustion, increased from 2000 to 2006, after which they started to decline.

Paul Epstein, associate director of the Center for Health and the Global Environment at Harvard Medical School, details the economic, health and environmental costs associated with each stage in the life cycle of coal — extraction, transportation, processing, and combustion.

Or you could just quote the relevant sections of Arthur Holmes's standard textbook «Principles of Physical Geology» that spells out a century's worth of observations, a calculation of CO2 rise due to oil and coal combustion, a 12 degree F temperature rise, and the resulting impact on glaciers and sea level — all published in the 1960s.

There's also the inescapable truth that, even you assume for sake of argument that the electricity you stick in your Model S is 0 % renewable and 100 % coal, you are at least keeping the poisonous side - effects of combustion away from urban centres and are not dragging a potpourri of contaminants down high streets and past schools or sitting in a fuggy 25 mile tailback of them.

If those interpretations are correct, then I'm thinking the burden of this discussion is that the authors think that «thermogenic» carbon is necessary to account for the PETM — in line with the somewhat well - known idea of volcanic combustion of coal beds, as mentioned a couple of times in Mark Lynas's «Six Degrees.»

His rapid - fire mind allowed us to fit in a long list of issues, from the ebbing and surging of China's power over the centuries to the merits of Honda Civics and a low - meat diet, from the persistent threat of terrorism and nuclear war to what he says is the fantasy of capturing and burying carbon dioxide from coal combustion at a scale the atmosphere might notice.

Third, the recent paper by Samset et al in GRL found that the loss of the cooling anthropogenic aerosols (primarily sulphates) emitted with fossil fuels combustion (mostly from coal and bunker fuels) would result in a near real - time warming of 0.5 C to 1.1 C.

Raypierre makes the case very clear in the current Chicago Int» l Law J. that closed system combustion with oxygen can avoid much of the externalization of costs built into current plants; I imagine it can even contain the uranium and thorium fallout from coal (which is worse than that from a properly operated fission plant).

The comment, made during a Jan. 17 interview with the editorial board of The San Francisco Chronicle, essentially explains how the kind of cap and trade mechanism sought by both Mr. Obama and Senator John McCain (the latter at least in his platform, if not on the stump) would make coal combustion ever more costly (unless the world finally gets serious about investing in large - scale testing and deployment of systems for capturing and burying carbon dioxide).

It's good old fashioned black carbon soot — a visible pollutant with measurable effects on human health both in poor places, where it comes from cooking or heating using coal, firewood or dung, and rich countries, where it is produced mainly through the combustion of diesel and similar fuels and from some industries.

He explained that an article I wrote in 2002 about fires, both natural and human caused, smoldering in coal seams around the world, inspired him, while he was completing a doctorate at the University of California, Berkeley, to switch from studying risks posed by smoldering combustion in spacecraft to those back on Earth.

Ma also calculated the expected number of premature deaths in China in the future if the country meets its current targets to restrict coal combustion and emissions through a combination of energy policies and pollution controls.

If someone in India dies from air pollution related diseases because India insists on cheap energy, so passes on the need for cleaning up coal combustion.

Just a quick note to those seeking a rapid decline in emissions of greenhouse gases (and other pollution) from coal combustion: The challenge, in a world with rising populations and energy appetites, is getting harder by the day.

The problem, of course, is that coal combustion remains king in industrial and industrializing economies, with China's coal plans being the dominant factor in greenhouse projections for decades to come.

Or you could just quote the relevant sections of Arthur Holmes's standard textbook «Principles of Physical Geology» that spells out a century's worth of observations, a calculation of CO2 rise due to oil and coal combustion, a 12 degree F temperature rise, and the resulting impact on glaciers and sea level — all published in the 1960s.

Carbon capture is costly in part because it requires additional energy to capture and separate CO2 from a heterogeneous mix — as emerges from the stack of a coal combustion facility for example.

So the chemistry of coal combustion has changed in the last 100 years?

At present, an estimated 2.8 million people die prematurely each year because of the smoky environments caused by burning solid biomass in inefficient stoves or from combustion of kerosene or coal for cooking.

That project would include the closure of DEP's existing 379 MW Asheville 1 and 2 coal units and construction of about 752 MW of natural gas - fired generation (two 280 MW combined cycle units proposed to commence operations in 2019 and an optional 192 MW combustion turbine unit proposed to commence operations in 2023).

What this means in plain English is, for example, that making coal or crude oil combustion more efficient could count as climate finance.

Flint Creek Power Plant ranked number 96 on the list, with 221,456 pounds of coal combustion waste released to surface impoundments in 2006.

How CHP works is by using the heat that would otherwise be wasted in exhaust gases from fossil combustion systems, such as flue gases from a coal - or biomass - fueled boiler or exhaust from a gas turbine or reciprocating engine, to produce steam and / or hot water for various industrial or commercial needs.

In the U.S., a range of legislation and regulation at the federal and state levels governs miner safety, coal mine reclamation, coal plant siting, thermal pollution from coal plant cooling, coal combustion emissions, and disposal of coal waste.

While those emissions have continued to decline in the West, returns, from a brightening standpoint, have diminished, just as coal combustion ramped up in Asia.

«Although there has been much reporting about metals contained in fly ash pond waters, including arsenic, copper and mercury, the ponds are designed to safely contain these metals which naturally exist in coal and remain in coal ash after combustion,» Sznajderman said in an email.

The NRDC cites the «2016 State of the Market» report by PJM, the largest grid operator in North America, as showing that «new entrant natural gas - fired combined cycle plants, combustion turbine plants, and solar are economical, but that new coal and nuclear plants are not.»

At power plants, combustion of coal produces a medley of air pollutants, especially in older plants that lack modern emissions control equipment.

The billions of tons of coal combustion waste produced by power plants needs to be stored somewhere, often in waste sites that are inadequately engineered to avoid dangerous spills or leaching of hazardous chemicals into groundwater supplies.