Not exact matches
Hydrogen can be combined with
carbon from agricultural
biomass to produce
fuel, fertilizer and other products.
Black
carbon aerosols — particles of
carbon that rise into the atmosphere when
biomass, agricultural waste, and fossil
fuels are burned in an incomplete way — are important for understanding climate change, as they absorb sunlight, leading to higher atmospheric temperatures, and can also coat Arctic snow with a darker layer, reducing its reflectivity and leading to increased melting.
These «second - generation» bioenergy crops are often seen as the future of bioenergy because, as perennials, they are far better at storing
carbon in the soil and in their
biomass than traditional
fuel crops like corn and canola.
Saikawa, a specialist in atmospheric chemistry, is also studying levels of black
carbon emissions in the outdoor environment generated by the burning of
biomass fuels like yak dung.
«Under those conditions you get a very high conversion of all the
carbon in the
biomass into various gaseous products,» says Arie Geertsema, Range
Fuel's chief technical officer.
«Today atmospheric
carbon dioxide emissions from burning fossil
fuels are implicated in climate change, and
carbon sequestered in forest
biomass reduces
carbon dioxide in the atmosphere.
Making liquid
fuels from gasified
carbon - rich matter isn't actually a new idea, but it has never before been practical for
biomass.
As with any
biomass fuel, any
carbon dioxide produced when the reed is burnt was extracted from the air when it grew, so producing and burning it does not add
carbon dioxide to the atmosphere.
Abstract: Black
carbon (BC) from
biomass and fossil
fuel combustion alters chemical and physical properties of the atmosphere and snow albedo, yet little is known about its emission or deposition histories.
If sufficient hydrogen is available, nearly all of the
carbon in the coal or
biomass feedstock to a Fischer - Tropsch plant would end up in the
fuel products and not in the air, eliminating the need to capture and sequester
carbon dioxide, the authors said.
As a matter of fact, if you burn every little bit of fossile
fuel and all the free
carbons and any thing of
biomass origin, you would exactly exhaust all oxygen and render the atmosphere back to the lifeless and oxygen depleted primordial environment.
Coal - to - liquid
fuels with
carbon capture and storage could replace about 15 — 20 % of current
fuel consumption in the transportation sector (2 — 3 million barrels per day; the lower estimate holds if coal is also used to produce coal - and -
biomass - to - liquid
fuels) and would have lifecycle CO2 emissions similar to petroleum - based
fuels.
Tesoro Corporation plans to foster the development of biocrude, made from renewable
biomass, which can be co-processed in its existing refineries along with conventional fossil crude oil to produce lower -
carbon drop - in
fuels.
Black
carbon is the term used for sooty particles produced by fossil
fuel combustion and come from things such as automobile exhaust and
biomass burning.
The amount of energy required to power this shipping process can account for 25 % of the total
carbon emissions associated with
biomass -
fueled energy generation in Europe.
AvantiRenewables provides customers with flexible and tailored lower
carbon fuel choices and one of its first offerings uses
biomass technology to deliver heating and hot water for businesses.
There are 3 major reservoirs for
carbon — the atmosphere,
biomass (living organisms) and fossil
fuels.
The candidate, I imagine, hits the «stop button» and asks «I know that converting
biomass to fossil
fuels is a long - term process and thus can't mitigate global warming, but won't
biomass pick up the slack and remove
carbon from the atmosphere.
Most
carbon life cycle analysis, using published computer simulations, show that the emissions given off by trying to contain fire actually exceed those from the fire itself given in order to influence fire behavior fossil
fuels are used to drive logging trucks, operate machinery, air tankers, and transport wood products, including
biomass to
fuels.
The topic is about
carbon in
biomass and in fossil
fuels, and about CO2 released in burning them, not about the hypothetical super vivano eruption, like the yellow stone.
As a matter of fact, if you burn every little bit of fossile
fuel and all the free
carbons and any thing of
biomass origin, you would exactly exhaust all oxygen and render the atmosphere back to the lifeless and oxygen depleted primordial environment.
The team also observed that GHG Avoided [GHGA = (1 - GHGI) · (lifecycle GHG emissions for the displaced fossil
fuels] for BTL - RC - CCS is 56 % higher than that of EtOH - CCS largely because 56 % of the
biomass carbon is stored underground for BTL - RC - CCS compared to only 15 % for EtOH - CCS.
Biomass (or bioenergy)
carbon offset projects vary depending on whether they are methane avoidance projects, reducing deforestation, or avoiding fossil
fuel use; some projects may deliver more than one of these.
As
biomass is a
carbon neutral
fuel, the power generation will have zero GHG emissions.
«Even if we were able to use productive plants such as poplar trees or switchgrass, and store 50 % of the
carbon contained in their
biomass, in the business - as - usual scenario of continued, unconstrained fossil
fuel use, the sheer size of the plantations for staying at or below 2 °C of warming would cause devastating environmental consequences,» Boysen says.
They say that the assertion that
fuels made from
biomass can be counted as
carbon neutral is wrong.
There was some bad news for Drax recently as the UK government decided that
biomass subsidies would not keep climbing as the «
carbon price floor» — levied on fossil
fuel production (and due to rise further)-- on electricity consumption has caused a backlash from manufacturers, consumer groups and energy suppliers who are concerned that the «tax will push up prices, make the UK uncompetitive and force the premature closure of coal - fired power plants, increasing the risk of blackouts.»
The sink swallowed up roughly 0.77 gigaton of
carbon per year, persisting despite a significant increase in
biomass burning emissions that occurred during the dry season of 2011,
fueled by the rapid growth of vegetation that year.
«Cutting trees for
fuel is antithetical to the important role that forests play as a sink for CO2 that might otherwise accumulate in the atmosphere,» Schlesinger writes in an article published yesterday in the journal Science, adding later that
carbon neutrality «is only achieved» if harvested forests are allowed to regrow more
biomass than was lost.
But most calculations claiming that bioenergy reduces greenhouse gas emissions relative to burning fossil
fuels do not include the
carbon dioxide released when
biomass is burned.
This option would minimize the complexity of assessing the lifecycle
carbon of each
fuel by source and process by taxing identical biofuel and
biomass products within each category at the same rate.
Similarly, a decision by EPA to classify
biomass fuels as «
carbon neutral» in its Clean Power Plan regulations would boost that sector more than a well - designed and hefty
carbon tax would shrink it.
Nevertheless, a
carbon tax shouldn't compound these perverse incentives by further incentivizing biofuels and
biomass to replace fossil
fuels.
In some cases, bioenergy appears to offer net climate benefits compared to fossil
fuels because of
carbon sequestration by plants grown for biofuel and
biomass.
In fact, burning
biomass directly emits a bit more
carbon dioxide than fossil
fuels for the same amount of generated energy.
One obstacle to subjecting combustion and / or production of biofuels and
biomass to
carbon taxation is the complexity of estimating
carbon emissions from each
fuel stream.
Using plant waste this way means you couldn't simply burn it for
fuel, reducing the world's
biomass potential; and there are the
carbon costs of transporting it and processing it and such like.
In fact, burning
biomass emits at least a little more
carbon dioxide than fossil
fuels for the same amount of generated energy.
Natural gas is added to the
biomass feedstock to create a two - to - one hydrogen - to -
carbon ratio necessary for «drop - in» transportation
fuels that can be used in today's engines.
Burning
biomass, whether directly as wood or in the form of ethanol or biodiesel, emits
carbon dioxide, just like burning fossil
fuels.
The latest controversy centers on EPA's proposed rule to characterize
biomass burning as a
carbon - neutral replacement for fossil
fuels under the Clean Power Plan — an issue covered smartly in June 2016 by the Washington Post and in October 2016 by New York Times economic columnist Eduardo Porter.
According to the U.S. Department of Energy, cellulosic
biomass has the potential to reduce
carbon dioxide emissions by up to 86 percent compared to petroleum - based
fuels, if it can be produced on a large - scale basis.
Solar jet
fuel would be
carbon - neutral assuming the CO2 is captured from atmospheric air (or comes from
biomass) because the CO2 used in the
fuel production is equivalent to the CO2 released in combustion.
BC FF is for black
carbon from fossil
fuel and biofuel, POA FF is for primary organic aerosol from fossil
fuel and biofuel, BB is for
biomass burning aerosols and SOA is for secondary organic aerosols.»
Since the Local Stakeholder Consultation meeting, ECOTRUST has been included under the Improved Cook Stoves for East Africa (ICSEA) Programme of Activities (PoA) which recently added a new methodology to allow ECOTRUST members to earn more
carbon credits for shifting from a dependence on non-renewable
biomass fuel to the use of renewable
biomass as their primary source of
fuel.
Biological options - Biological options for mitigation of climate change involve one or more of the three strategies: conservation - conserving an existing
carbon pool, thereby preventing CO2 emissions to the atmosphere; sequestration — increasing the size of existing
carbon pools, thereby extracting CO2 from the atmosphere; substitution - substituting
biomass for fossil
fuels or energy - intensive products, thereby reducing CO2 emissions.
During a 10 - year investigation detailed in the latest issue of the Journal of Geophysical Research, Stanford University scientist Mark Jacobson isolated the widespread warming effects from all sources of soot â $» the visible residue of burned wood, crops, oil,
biomass and other
fuels â $» from the climate impacts caused by greenhouse gases such as
carbon dioxide and methane.
Forest
biomass for energy can release three times more
carbon than fossil
fuels.
Studies of the global
carbon cycle often identify
biomass energy as being among the most important potential benefits associated with the forest industry value chain...» They then go on to worry that the use of paper fiber (
biomass) for
fuel would cause ``... - market - distorting public policies that disproportionately favor the use of these materials for their
fuel value, - public policies that fail to recognize the direct and indirect economic and social benefits associated with using
biomass as a feed stock for forest products manufacturing,...».
Enviva's claim is only possible because of a UK and EU «policy loophole» — which does not apply in America — classing
biomass fuel such as wood pellets as «zero
carbon».