Posts Tagged ‘Biofuel’
Advantages and Disadvantages of Biofuels – The Energy Source of Our Future
With all of the talk about our dependency on foreign oil and its economic and environmental costs people are very hungry a cheaper alternative that is also good for our atmosphere and biofuels could be that next energy source. We should however analyze the advantages and disadvantages of using biofuel to replace gasoline as the dominant fuel source not just in our country but globally.
Advantages of biofuel
1. It is a very green friendly fuel that can help to halt and even in some cases reverse our current rising levels of green house gas that oil has had a major contributing factor in.
2. It can be made from many sources such as plant material, fungi and algae and since these source are available in abundance and can potentially reproduced on a massive scale they are an energy source that is potentially unlimited.
3. It will end our need to depend on opec and other foreign countries for our energy needs and can potentially help to bring world peace.
4. Biofuels can also help to stimulate jobs locally and can thus have the potential to turn around a global economy that has been slumping for a while now. They are also much safer to handle than gasoline and therefore cause lesser long term health effects on the human body.
As you can see these are all very good advantages in favor of this awesome new fuel source but just like all others, there are also some negative factors involved here.
Disadvantages of biofuel
1. As of right now even though biofuels produce much lesser green house gases the machines that are used to cultivate and produce them still have some problems with carbon emissions so we still need to work on newer ways to produce them in a more greener way.
2. Our technological process to produce biofuels are way to costly for us to be able to afford on a massive scale. We still need billions of dollars of research money into having a manufacturing process that will produce them at a cheaper rate.
3. We still don’t have anywhere near the amount of biofuel converted cars to be able to take advantage of this fuel source. We will need to invest trillions of dollars to change the automobile infrastructure to allow us to take advantage of this awesome natural fuel.
4. Once we are able to build large manufacturing plants we will need to find a way to deal with the very bad smell that is the outcome of the biofuel production cycle and large towns will not want to put up with this bad odor produced.
While there are some disadvantages to biofuel the potential is just to great to ignore and push forward with. This is the energy source of the future so the sooner we can get it to the manufacturing process and made available to the masses the faster we will be able to solve the problems we are now facing with gasoline only lasting another 20 to 30 years.
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gaeus, technically a modified Toyota Prius is one of the first of its kind to run on a mixture of algae based fuel. The company spokespeople have said that the car gets about 150 miles per gallon. Algae could turn out to be the biofuel of the future.
The Algaeus was premiered in San Francisco, California with plans to eventually drive it across the country using only algae based fuel. Right now the ratio of algae in the tank is about five percent but even that is huge strides in the right direction toward an alternative fuel source without negative impact. The algae are supplied in the form of green crude from a company called Sapphire Energy.
In the future, there will be more algae powered vehicles; however for now the company will continue to make an increased amount of algae based jet fuel. The goal is a production of over two million liters of algae jet fuel in the next two years. In addition, it will continue to make algae based fuels for alternative cars and other vehicles as well.
Any move that can change the way that the country looks at fuel and fuel production should be considered to be positive, however, the algae based fuel may be in the distant future as there are other considerations to keep in mind with this and any other fuel source. How will it be transported, and how will it be stored once it gets to different locations for instance. Are there any side effects to the refining of the algae for fuel? Are there dangers to consider? Will the car be eventually all algae powered or will it continue to only use a percentage of this green crude? What is the power capability of a car being run on five percent algae? Every question that can be answered in the present will have a new one to be worked on in the future it seems.
If the Algaeus does make it across the country, (the trip was meant to be from California to New York) there will be millions of questions that are likely to arise. How well the questions can be answered will be important not only for this type of alternative fuels, but for all others as well. For some people, any failure in the alternative fuel market might be a failure across the board however one minded that might be.
Biomass as an Alternative Fuel: Are You Prepared?
The oil crisis and world overdependence on fossil fuels have paved the way for new developments in alternative energy sources. One of these alternative sources is biomass, which certainly has the potential of being considered a good substitute for fossil fuel. Seeds of fortune are often planted in the throes of a crisis. Biomass may just be that seed of fortune you are looking for.
Biomass is a natural and renewable energy source that is derived from recently dead biological matter and is used as a biofuel. It usually comes from plants, but it also comes from animal matter and other agricultural biodegradable waste. Examples of plants that can be used as biomass are corn, sugar cane, wheat, and switchgrass. Waste matter from plants like coconut husks, rice hulls, and bagasse (waste from sugar cane) are also examples of biomass. However, biomass excludes organic material which has been transformed by geological processes into substances such as coal or petroleum. In general, biomass can be used in either raw form or some sort of modified, blended form.
Biomass works like this. It is burned to produce heat that makes hot water, which then produces steam that can power turbines. Since biomass is also carbon-based like traditional fossil fuel, it has a comparable burning rate that makes it suitable as an energy source for small-scale power generation. But unlike fossil fuels, biomass absorbs carbon dioxide from the atmosphere during its growing lifetime. After its life, the carbon in biomass recycles to the atmosphere as a mixture of CO2 and methane (CH4), depending on the ultimate fate of the biomass material. CH4 converts to CO2 in the atmosphere, completing the cycle. In contrast to biomass carbon, the carbon in fossil fuels is locked away in geological storage forever, unless extracted.
Biomass has become a popular alternative source of energy in farming areas and other areas where there is a huge amount of agricultural waste. Farmers have used biomass to power their equipment and for post-harvest processing of agricultural crops.
As an energy source, biomass has many applications depending on the type of material used, the location, and the processing that it has to undergo to make it usable. The simplest biomass application is agricultural fertilizers. Biomass materials can also be used for fiber or building material. Further chemical processing, such as hydrogenation, can produce a biomass that makes it a suitable fuel source. Biomass is also sometimes used for space heating applications.
Biomass is also scalable. Already there are biomass power plants operating with 11,000 megawatts (MW) installed capacity, representing the second largest amount of renewable energy in the United States, next to geothermal energy. These power plants burn wood and agricultural wood wastes. Aside from burning the biomass to produce heat, gases like methane can also be extracted, which can then be used as fuel for generators, turbines, and fuel cells.
Some environmentalists argue that biomass is part of the carbon cycle and as such emits greenhouse gases that contribute to global warning. That said, biomass emits 50% less than emissions from burning fossil fuel. Furthermore, the disadvantage of having carbon dioxide emission can be offset by the fact that biomass is often sourced from recycled waste materials, therefore significantly reducing solid waste. This helps to classify it as an efficient and cost-effective energy source.
In addition to this environmental concern, biomass raises another critical issue in the food vs. fuel debate. Some argue that using biomass for energy instead of using it as an edible food is unconscionable. This argument has been magnified by the more recent oil and food price crises, where critics point out that biomass could have helped create or at least magnify the rising cost of food staples. However, some studies suggest the amount of crops that go to biofuel production may not be significant enough to tip the food demand.
While the conversion to biomass fuels is probably inevitable, some are concerned about how the conversion will take place: The timing and cost of the conversion is still not clear. Also total direct and indirect costs and what groups benefit and which groups suffer are major concerns. With congressional leadership favoring an acceleration of greener energy in a way that benefits their constituents and lobbyists, the conversion to biomass will create winners and losers.
What the biomass discussion is pointing to is the urgency for industries to begin planning NOW for the inevitability of a greener world. Will you be prepared?