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what are the benefits of biofuels over hydrogen fuel?
10 Answers
- ?Lv 74 years ago
There is no easy source of hydrogen for fueling. It has to be stripped out of something else.
- Anonymous4 years ago
none
- ?Lv 74 years ago
No real benefits. We can get Hydrogen by hydrolyzing water by running an electrical current through it, it's a good storage method for solar, wind and other intermittent energy sources.
- Anonymous4 years ago
Hydrogen takes a huge amount of energy to create, most of this energy comes from electricity which in turn is created using a dirty inefficient coal fired generator.
The carbon released by burning biofuels has already been taken from the atmosphere when the crop was growing, so the emissions are recycled rather than being released from fossil fuels.
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- 4 years ago
Hydrogen is the most common element and is part of the basis of most biofuels. Burning hydrogen in an oxygen atmosphere produces only water. But hydrogen combines so readily with most other elements that you need energy to split hydrogen from those elements. While we could obtain hydrogen from water one of the cheapest and easiest ways to obtain free hydrogen is from fossil fuels and this is the most likely source. A "hydrogen car" then in today's economy would almost certainly be dependent upon fossil fuels.
Bio-fuels are often very similar to fossil fuels which also have an organic and solar energy basis. Typically they combine carbon with hydrogen in some way. Like fossil fuels they will have a residue of carbon and other elements once the energy is extracted. Unlike fossil fuels they will be using carbon that is part of today's carbon cycle.
Most bio-fuels are dependent upon some variation of photosynthesis to use energy from the sun to split hydrogen from water and combine the hydrogen with carbon from the air. Unlike our efforts with hydrogen alone the biological process is long established and very common.
Bio-fuels have also been used for thousands of years in the form of wood, grasses, and dung so they are a low tech energy supply available to the poorest people.
As a part of the environment bio-fuels are natural but limited. Industrial development of bio-fuels tends to eventually compete with food production and other natural resources. Today many natural forests are being cleared for the production of palm oil.
In summary: availability, low tech approach, part of the natural carbon cycle.
- 4 years ago
Bio-fuels are extracted from wasted plants and crops that means they are helpful in reducing pollution at some extent.Although hydrogen fuel is also renewable.The two main processes of hydrogen extraction are extremely expensive. hydrogen is hugely flammable,it lacks smell, which makes any leak detection almost impossible.
- Anonymous4 years ago
Biofuels are easier to contain and transport and are less dangerous. They also are renewable and cheaper than hydrogen. Hydrogen can be renewable, but it is cheaper to crack fossil fuels to get it than to produce hydrogen from renewable sources. Fossil fuels tend to create less NOx emissions and are carbon neutral, canceling out CO2 emissions, but Hydrogen would create CO2 emissions if not made from a renewable source, and in internal combustion engines Hydrogen as a fuel easily creates more NOx emissions. Fossil fuels, though, would create more CO, HC and VOC emissions than hydrogen. If hydrogen were made from a renewable source and were burned at low temperatures, such as in a fuel cell, it would be virtually emission free.
- 4 years ago
Biofuels can use the existing infrastructure (refineries, pipelines, gas station pumps, engines, etc). Hydrogen needs entirely new infrastructure.
Biofeuls are carbon-neutral. Although there are other ways of doing it, right now the vast majority of Hydrogen is produced by cracking natural gas, which is a non-renewable resource and not carbon-neutral.
- Anonymous4 years ago
Less pollution, more quantity in the nature etc.