Using corn crop residue to make ethanol and
other biofuels reduces soil carbon and can generate more greenhouse gases than gasoline, according to a study published today in the journal Nature Climate Change.
Not exact matches
«It is unlikely that historically low rates of deforestation can persist in the face of growing pressures to clear land due to increases in population, demand for wood and charcoal, cropping with
reduced fallow periods leading to soil degradation, and international interests in large scale land investments for oil,
biofuel and
other crops,» the study states.
«Boeing believes that
biofuels and
other types of alternative fuel sources are a near - term solution to
reduce carbon emissions,» Boeing senior manager Robert Stevenson told the committee.
They've demonstrated how to design and genetically engineer enzyme surfaces so they bind less to corn stalks and
other cellulosic biomass,
reducing enzyme costs in
biofuels production, according to a study published this month on the cover of the journal ACS Sustainable Chemistry & Engineering.
That, in turn, could obviate the need for making
biofuels from corn, sugar, and
other food crops and thereby
reduce the need for using prime agricultural land to grow
biofuels.
The bill zeroes out a $ 118 million initiative for
biofuels research, for example, and
reduces the size of a program for research on fruits, vegetables, and
other specialty crops from $ 230 million a year to $ 200 million.
The new analysis found that conventional crops such as corn had the highest yield of biomass that can be turned into
biofuel on marginal lands, although their ability to
reduce CO2 is harmed by tilling, fertilizing and
other CO2 - producing activities necessary to turn them into fuel.
In contrast, the grasses and
other flowers and plants that grow naturally when such lands are left fallow — species such as goldenrod, frost aster, and couch grass, among
others — can deliver roughly the same amount of
biofuel energy per hectare per year if fertilized, yet also
reducing CO2 by more than twice as much as corn.
-- Climate impacts: global temperatures, ice cap melting, ocean currents, ENSO, volcanic impacts, tipping points, severe weather events — Environment impacts: ecosystem changes, disease vectors, coastal flooding, marine ecosystem, agricultural system — Government actions: US political views, world - wide political views, carbon tax / cap - and - trade restrictions, state and city efforts —
Reducing GHGs: + electric power systems: fossil fuel use, conservation, solar, wind, geothermal, nuclear, tidal,
other + transportation sector: conservation, mass transit, high speed rail, air travel, auto / truck (mileage issues, PHEVs, EVs,
biofuels, hydrogen) + architectural structure design: home / office energy use, home / office conservation, passive solar,
other
Two
other catalysts have been reported in the last year, but the USA is staying mired in a mess with bioethanol and
other useless
biofuels programs that just recycle carbon dioxide rather ineffectively and do nothing to actually
reduce some of the overload of that gas already in the atmosphere.
Let's reword all this and say that we want to improve energy efficiency and
reduce waste and real pollution wherever we can, we want to move away from ever scarcer and costlier fossil fuels, particularly those that have to be imported from a price - fixing cartel of nations that are generally hostile to us and we want to develop new domestic sources of energy, be that shale oil and gas, new
biofuels (not silly corn - to - ethanol schemes) and
other renewable energy sources, etc..
It's now well - established that large - scale U.S. production of
biofuels such as ethanol from corn has accomplished little or nothing (or even negative) in its stated goals of
reducing oil dependence and cutting emissions of greenhouse gases, and has functioned instead as a full - employment program for agribusiness (and a political production racket for Iowa and
other corn - growing states).
surface was clearly
reduced for both
biofuels in comparison to the
other fuels.
He then offered a strategy aimed at, among
other things,
reducing oil imports by one - third by 2025, partly by increasing domestic production but largely by producing more efficient vehicles and by moving advanced
biofuels from the laboratory to commercial production.
Other factors may
reduce demand on forests for energy production, for example, technological problems with liquid cellulosic
biofuel production and transportation - related constraints.
Provides opportunities for refineries to comply by blending
biofuels, purchasing credits from utilities and
others that sell electricity for EVs,
reducing emissions associated with refining, and more
Indeed, corn is not the optimal basis for providing all the ethanol fuel we will need, but, as the President says,
biofuels are needed to
reduce our addiction to oil and to slow climate change — and the emerging
biofuels market is spurring major investments in using biomass
other than corn to make ethanol.
(For fossil fuels, tax assessed preferably at the mine or well, to
reduce paperwork and make enforcement efficient (as opposed to the exhaust pipe)-- but then a compensating credit for fossil C used in materials unlikely to be oxidized, etc, with compensating tariff / subsidy for trade between nations with differing policies; attempt at least approximate CO2eq tax for
other sources so as to not distort the market (don't encourage too much deforestation for
biofuels, don't forget about cement production, don't forget about cows, etc.)-RRB-.
According to a new report from the Organization for Economic Cooperation and Development, «Economic Assessment of
Biofuel Support Policies», not only is public support of
biofuels costly it has little impact on
reducing greenhouse gas emissions: All the tax incentives, blending targets and
other public support policies in the EU, US, and Canada total $ 25 billion per year, but will ultimately result in less than a 1 % reduction in emissions from transport by 2015.