When it comes to producing ethanol, sugar is the key component. The sugar base can vary widely with current plants often using corn, soybeans or cane sugar. In an attempt to use biomass that has no food value, researchers have perfected a way to transform waste biomass, like wood chips into ethanol. Other common alternative sugar sources include switchgrass.

The focus on cellulosic biofuels peaked during the Bush years of the United States. According to then President Bush, the United States would produce 35 million gallons of ethanol by 2017. The most popular method of production uses corn starch which is limited to about 15 billion gallons per year. So, where were the remaining 20 billion gallons going to come from? The answer is cellulosic biomass.

Throughout World War I and World War II, cellulosic biofuels were used as an alternative form of energy. The plants created to manufacture the fuels were not profitable during either war and thus they were closed. These plants used acid to treat wood before pulling out the sugars needed to produce ethanol. The process yielded 50 gallons of fuel per ton of biomass in optimal conditions and used more energy during the manufacturing process than the resulting energy yielded.

Technology changes and the use of enzymes to treat biomass have revolutionized the process and thus the promise made by the former President of the United States. More than $350 million in funding was provided to start the production process. The two types of production funded included thermo-chemical and cellulosic.

Biofuels are derived from the decomposition of biological or organic waste. Most biofuels are formed from plant matter. They are found in liquid, solid or gas states.

Biofuels differ from fossil fuels in some important ways.

• They are a completely renewable energy type

• They emit much fewer pollution-causing green house gases

• They can be produced in one crop season, unlike fossil years which took MILLIONS of years to form

There are different “generations” of biofuels. Let’s look at each.

• First generation biofuels come from sugar, other starches, as well as animal and vegetable oils. Examples include biodiesel and biogas.

• Second generation oils are derived from industrial waste products, such as wood chips. Ethanol biofuel, other alcohols and diesels fall into this classification.

• Algae biofuel is the third generation. These are highly renewable because the algae can be easily grown on a large scale and they decompose quickly and easily.

• Micro-organisms are utilized in forth generation biofuels. Like third generation, they decompose quickly and so have a low carbon footprint.

Now that we have learned about the various types, let’s examine biofuel advantages.

As previously stated, all biofuels are extremely renewable. They are therefore able to lessen our reliance on non-renewable fossil fuels.

Compared to the extraction, processing and transporting of fossil fuels, manufacturing biofuels is much less expensive. Everyone is looking for home energy saving tips these days.

Biofuels are more environmentally friendly. Less green house gasses are emitted from them than from fossil fuels.

Biofuel Disadvantages:

In the creation of first generation biofuels, huge amounts of land are needed. The crops tend to be lesser varieties of the original, say of corn, for example, making it unsuitable for human consumption. This reduces acreage for good food crops and shrinks food production. The price of edible corn has therefore gone up in recent years. This has been a topic of heated discussion with many arguments on both sides. The belief by those who protest large-scale production of food crops for biofuels is that food should be solely for eating. They maintain that many poor people have already been negatively impacted by the production of biofuels.

Biofuel creation also requires enormous amounts of material. With much land devoted to this, less is available for growing edible food crops. So, as more and more land is used for both food crops and for biofuels, there is less and less natural habit for ecosystems of plants and animals.

Another issue is that most biofuels are produced in relatively small quantities compared to the large-scale production of coal, oil and natural gas. It’s difficult to maintain a regular supply of biofuel, so it cannot always be counted on unless you have a reliable source.

For these reasons, many feel the best future use of biofuels will be in developing countries. Here, where fossil fuels may be in short supply or unaffordable, small-scale biofuel production may be a viable renewable energy type. In the Indian state of Bihar, for example, the resourceful citizens are converting biomass from human waste into biogas for electricity.

Weighing the advantages and disadvantages of biofuels, we can see that they are not the perfect green energy source. If you are lucky enough to live close to some kind of manufacturing facility where waste is produced which could be turned into biofuel, then that would be terrific.

If you’re looking for home energy saving tips though, you’ll probably want to take a closer look at wind and solar power solutions. The energy-conscious home owner will find many savings with these.

A review of alternative energy approaches will show the significant advantages of biomass, and a key characteristic is that combustion does not add to carbon cycle in the unsustainable way that fossil fuels do. As the levels of carbon dioxide, a major greenhouse gas, continue to rise, the need to address the sources is urgent the world is to avoid irreversible climate change.

As a material drawn from a broad range of organic sources, biomass fits the renewable energy category and can be deployed for generating power. Among the sources available are tree roots, branches, wood chips and shavings together with various agricultural wastes like crop residues, manure and silage. A biomass reactor can also be fuelled by specially grown grasses like miscanthus, switch grass and hemp or from trees like poplar and willow, or using wood pellet by-products.

Clearly one of the significant advantages of biomass is the capacity significantly to reduce the burning of fossil fuels to generate heat, steam and electricity in residential, industrial and farming settings. There is also the fact that biomass is highly available relative to other fuels. As it is possible to continuously replant biomass sources, this fuel is reasonably described as renewable, because carbon released during the burning process is sequestered when plants grow, and so this source is also properly described as carbon neutral.

Using wastes from crops such as straw and husks as a by-product to produce biomass fuel actually increases the value of the original source crops. When carbon dioxide is released during the combustion process, a carbon sink to sequester this greenhouse gas will start with replanting and oxygen will also be released into the atmosphere as photosynthesis proceeds.

With the ever present pressure on landfill sites to take municipal waste streams, the idea of getting biomass from these sites will ultimately see a cut in waste volumes accumulating in these locations, which are the cause of significant releases of methane, a greenhouse gas with over twenty times the potency of carbon dioxide.

An alternative to combustion of biomass is their use in a way that has a lesser impact on the environment. The process called anaerobic digestion, where municipal and animal wastes are converted into gases, is another way of driving turbines to generate electricity. This is an alternative to burning the biomass with the need to plant enough fast growing trees as a carbon sink to make the process carbon neutral.

Ethanol sourced from biomass can be used in a range of new biofuel blends, with the extra benefit of being cleaner burning than the mainstream fossil fuels, as well as the improved efficiency of combustion efficiency in road vehicles. It’s clear that biomass derived fuels can be employed to generate heat and electricity as well as an alternative fuel to petroleum distillates.

It seems governments across the world see the growth of new renewable energy plants as one way to address the twin challenges of energy security and climate change. A key consideration, however, is the need for a sufficient and steady level of baseload supply, as it is not enough to just provide extra capacity to meet peak demands. Sometimes the wind doesn’t blow and the sun does not always shine, and the tides have to turn, all are periods when no electricity can be produced, while the advantages of biomass sources is that they do not have this constraint.

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The recent breathtaking spike in oil prices has finally awakened professionals in the energy field to the very real need for alternatives. As a result, we are seeing liquid fuels developed from plant materials entering the market. Sugar components of various plant materials if fermented will yield an alcohol called bioethanol. Even cellulosic biomass (trees and grasses, for instance) can be used to produce this kind of biofuel. Ethanol, widely used in Brazil as well as in the United States, can, actually, be used in a pure form; however, it is used more as an additive to boost octane in addition to reducing emissions.

Biodiesel, on the other hand, is made from oils–vegetable or animal. Very often, greases are recycled and used for biodiesel. Like ethanol, it can be used in its pure form for diesel engines but is more often treated as an additive. This is the most common biofuel in Europe. The process for producing it from fats and oils is called transesterification.

In 2008, 1.8% of the world’s transport fuel was biofuel. Investment in the production of this new approach to fueling transportation vehicles for the world is expanding rapidly. It was $4 billion in 2007. The liquid biofuels are the most popular ones for these purposes because they can be pumped, and they can directly replace gasoline. Not only do internal combustion engines run cleaner on biofuels, but pollution is also minimized. Biofuels are generally classified as first generation, second generation, and third generation.

First generation biofuels are made from sugar, starch, vegetable oil, or animal fats. Grains such as wheat are fermented into bioethanol; sunflower seeds are pressed to yield vegetable oil for biodiesel. The most common first generation biofuels:

- Bioalcohols

- Biodiesel

- Vegetable Oil

- Bioethers

- Biogas

- Syngas

- Solid biofuels

Second generation biofuels are made from non-food crops such as waste biomass, stalks of wheat, corn, wood, and certain grasses. To avoid the political issues that have arisen from the use of food that is needed for humans and animals to produce fuel, the pressure is on to develop more of these sources. Some of the second-generation biofuels under development:

- Biohydrogen

- Biomethanol

- DMF

- Vio-DME

- Fischer-Tropsch Diesel

- Biohydrogen Diesel

- Mixed Alcohols

- Wood Diesel

Third-generation biofuels are made primarily from algae, which can produce up to 30 times more energy per acre than land crops such as soybeans. However, they have not yet been produced commercially. These are biodegradable and will not harm the environment if they happen to be spilled. Algae can be grown agriculturally. It’s estimated that 15,000 square miles of algae would meet all the needs for petroleum fuel in the United States.

- Agricultural Algae

- Ethanol from Living Algae

- Helioculture (collection of carbon dioxide from the air using solar power)

For the non-scientist, this seems somewhat complicated, but more and more professionals in the appropriate fields are switching to this quickly-emerging industry, and we can hope that many of the problems the world faces now in obtaining energy without jeopardizing our environments will see solutions in the coming years.

Today’s world is facing the dilemma of food shortage. Population growth, alternate use of edibles, the skirmishes between the food program workers and the hungry warring factions, climate changes due to pollution, shortage of supply and above all the energy crises are the issues that are not only difficult to solve but also reversely affect each other. If one issue is resolved the other is catalyzed by this redemption. If we try control the pollution by using the corn and other edibles the ozone layer is saved but the humanity is harmed due to shortage of food. The water scarcity and energy supply are two major factors that are behind the price hike. If enough water is attained from the underground water resources the already falling water table goes more into abyss. The food issue is so perplexed that a concerted action is needed to over come the food shortage and food supply.

There are two billion people in the world who are not able to get enough food that can mitigate their hunger. World Food Program estimates that 850m people all over the world are already famished. The reasons behind this malnutrition are scarcity of food items and high food prices. The economists all over the world are warning persistently to the governments and donor agencies alike to take some urgent steps to avert these crises. Many of them are of the view that the crisis could be as serious as climate change and may hit sooner than climate disasters. According to the facts and figures collected by the world food program the food reserved for period of predicament is now enough only for 50 days.

The world population indicators show that present population of the world that consists of more than 6.5 billion people would touch the figure of nine billion by 2050. On the other hand there is no other earth or piece of land that could be the source of commodities like food and water for this extra population. This earth is the only place to live and get food from it. This population explosion is exerting huge pressure on food supplies and producing food shortage.

Ultimate effects of poverty alleviation are of a great concern for the economists of the future. The uplifted standard of the people of the most populated countries like India and China would pull them out of poverty but put them in the hole of shortage of food.

The low rainfall and the low yield are already affecting the economy of the world.160 million people depend on the 15% of the global food articles that are grown with underground sources of water and these resources are reducing rapidly. The water table in China and India is falling disastrously.
The river waters are also drying and making the bad situation worse.

There is a conglomerate of the causes behind this food scarcity.

If we root out one cause it gives rise to another one. We know that energy is the driving force of life. Life is running with energy. All the crops need some kind of supplement in the shape of fertilizers or pesticides. These things need a lot of energy for their synthesis. If proper quantity of energy is not available the needs of the crops could not be fulfilled and that gives rise to the shortage of yield and high price. People cannot buy the enough food and starve.

The use of food crops for producing the biofuel is becoming the main cause of price hike. The biofuel are atmosphere friendly but hazardous for the people as far as the food supply is concerned. American have set target of 35bn gallons of biofuel by 2017 to decrease dependency on oil imports. 800 million vehicle owners of the world and the two billion starved people are competing for the food crops for their respective use.

The unusual weathers due to pollution are badly affecting the flora and fauna of our earth. The water that was supplied by the rains is not available and drought is deserting the fertile lands. The only way to avert climate disasters is the use of biofuels but in this way people would not be able to get eatables. The maize that was used as fodder for the animals or as a food articles will be used for preparing the biofuel.

Policies of the states are the also one cause of these food crises. The capitalist governments often waste their products but do not distribute it among the poor just for maintaining the price level. The world economic forum devises policies to exacerbate the food crises but without any solid results.The world social forum demands the free food supply for all the people that are also impossible. The need of the hour is the median path that should not harm both the people and the industrialists.

There is no simple solution to this problem. The scientists should double the efforts to tackle this problem on emergency basis. The world can be saved by the sagacious application of all the methods of food and energy production. The people of the future could be feed only if the population and pollution are controlled. The water resources are saved and alternate sources of energy are discovered that are environment and people friendly. Fair and uniform economic policies all over the world can help humanity in averting the looming food crises. Above all a soft corner for the humanity will help us a lot to save our earth and its inhabitants from disaster.

Biofuels are alternative sources of energy that can be used to power heating systems and gas powered engines. These sources are created from feedstock which can include corn, soybeans and algae. The automobile industry is slowly converting to this alternative choice and the change is making a definitive impact on the environment. How is that impact reduction measured?

Fossil fuels commonly used to make gasoline and heating oils emits gases and chemicals when burned. These collect in the atmosphere and quicken the natural global warming process. While the Earth historically goes through a roller coaster of temperatures ranging from the deep cold freeze of the Ice Age to much hotter climates, the gases black heat that is bounced off the Earth from escaping back into space. Right now, the Earth is at a comfortable temperature, but without change and a reduction in these fatal emissions, the warming will eventually spell the end the life on Earth.

The benefits of biofuels are a strong reduction in greenhouse gases. The fuels burn more cleanly and emit less CO2 into the atmosphere, among other gases and chemicals. With every bit less, the global warming process slows just a bit. It is important to understand that the current benefits of biofuels are measured based on the current population. If the Earth’s population continues to rise, the output of greenhouse gases from biofuels may still have a strong impact on the Earth’s temperature so even cleaner alternative are always being researched. The end goal is to create a fuel that burns with 0 emissions.

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You might have heard a lot about biodiesel. Biodiesel is diesel than can power up your car that is made from vegetable oils and other natural sources. It does not come from the regular crude oil that usually has to be imported from oil-producing countries.

Biodiesel can be considered a new technology, taking into account all the years consumers have had to settle for traditional diesel. Using biodiesel for your car has many advantages:

1. Biodiesel is not harmful to the environment. Unlike its counterpart, a car using biodiesel produces fewer emissions. If a vehicle uses traditional diesel, the vehicle emits black, stinky smoke. With biodiesel, the smoke becomes very clean indeed.

2. Biodiesel may not require an engine modification. Some cars can take advantage of biodiesel without the need to undergo engine alterations. Some mix 20% biodiesel with regular diesel. Doing so enables the car to benefit from the good points of biodiesel without the hassle.

3. Biodiesel is cheap. You can even make biodiesel in your backyard. If your engine can work with biodiesel fuel alone, then you really need not go to the gas station to buy fuel. You can just manufacture some for your own personal use.

4. Biodiesel can make the vehicle perform better. It is noted that biodiesel has a cetane number of over 100. Cetane number is used to measure the quality of the fuel’s ignition. If your fuel has a high cetane number, you can be sure that what you get is a very easy cold starting coupled with a low idle noise.

5. Biodiesel can make your car last longer. Because of the clarity and the purity of biodiesel, you can be sure it will not have too many impurities to harm your car. It is actually more lubrication. A car’s power output is unaffected by this type of diesel.

6. Biodiesel reduces the environmental effect of a waste product. Because biodiesel is made out of waste products itself, it does not contribute to nature’s garbage at all. Biodiesel can be made out of used cooking oils and lards. So instead of throwing these substances away, the ability to turn them into biodiesel becomes more than welcome.

7. Biodiesel is energy efficient. If the production of biodiesel is compared with the production of the regular type, producing the latter consumes more energy. Biodiesel does not need to be drilled, transported, or refined like petroleum diesel. Producing biodiesel is easier and is less time consuming.

8. Biodiesel is produced locally. A locally produced fuel will be more cost efficient. There is no need to pay tariffs or similar taxes to the countries from which oil and petroleum diesel are sourced. Every country has the ability to produce biodiesel.

Biodiesel is surely a viable fuel alternative. Moreover, it is also a sustainable fuel. Using biodiesel not only helps maintain our environment, it also helps in keeping the people around us healthy.

The production of biodiesel all over the world is now being looked upon favorably. In Europe, many biodiesel stations have been set up already. There is also a move to convert or make cars compatible with biodiesel fuel in the near future.

Biodiesel can surely change the way vehicles are manufactured and used. It is surely the best substitute right now, and everyone should consider ways to take advantage of the benefits of biodiesel.

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Lately researchers are looking for every possible alternative energy source, this due largely to the world’s energy crisis and the condition of the environment. The top of the list is replacing traditional fossil fuels with alternative and renewable energy.

The main contenders for fuel substitutes are biomass fuels. Biomass fuels are derived from organic plant matter. Ethanol-based bio fuels are extracted from corn. Biodiesel is made up primarily of used vegetable oil and grease. Jatropha oil, which comes from seeds from the Jatropha plant, is also being used to make biofuels. Now added to the list is cellulosic biofuel.

Cellulosic biofuel is very revolutionary in biofuels; this is because it is not plant specific as with Jatropha and and can be generated from both living and dead organic plant matter rather than requiring crops to be grown specifically for the purpose of cellulosic biofuel production, such as ethanol needs corn.

The carbon content in cellulose is what makes it such a good candidate in the quest for biofuel. Cellulose is the most abundant carbon form present in biomass and accounts for around 50% of its weight. Cellulose can be found in most plant matter without the need for land space or water for irrigation giving cellulose biofuel its appeal.

Cellulose is a polysaccharide comprised of a six sugar carbon polymer. Because of its composition and its abundance, cellulosic biofuel is an attractive possibility for mass biofuel production.

The researchers at NASA are further exploring cellulosic biofuel as a viable fuel source. They are researching more efficient processes to convert cellulose to sugar. Once cellulose is converted to its sugar-based form it can be used for other purposes such as chemical agents, food and cellulosic biofuel.

However, the conversion to sugar is requires around 50 hours for the process to take place. You take labor costs and the energy to covert it, and you can see how costly it can become. With time also comes higher production costs. If it would be pssible to cut this process down to 5 hours it would see cellulosic biofuel become cost effective enough to be competitive in a global market.

What scientists hope to accomplish is to refine the process for easier extraction of the complex sugars from cellulose. Because the plant cell walls were designed in nature to be robust and to stand up to the elements, it makes it difficult to break down and extract. Researchers hope to make extraction easier by engineering plant cell walls.

Another hurdle in the production of cellulosic biofuel involves the improvement in enzyme efficiency. They plan to mimic enzyme behavior from animals that are the most efficient at breaking down cell walls such as herbivores like cows and sheep which they believe is the key to cost effective cellulosic biofuel production.

Some of the things we can do to help protect ourselves from increasing oil prices is to conserve what we have now, to use less, and to alter our energy consuming patterns. We need to look into alternative energy sources when they become available to us. If we do these things, cellulosic biofuel could be on the market in as little as 5 years.

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Do you want to know the advantages and disadvantages of alternative energy solutions, and how you too can harness this energy for home use? There are many different alternative energy sources ranging from renewable to non-renewable ones, with some being much more sustainable than others. Nevertheless, it has become the topic of conversation for many people as more people are becoming more environmentally conscious.

1. What Are Some Examples Of Alternative Energy Sources That You Can Use At Home?

One of the most powerful forms of renewable energy that can be harnessed at home is solar power. Wind turbines can also be built to harness wind energy and convert it to electricity for home use. Other forms of renewable fuel can be wood that can be renewed with the re-growing of trees, sea, crops and waste products. But rapid usage can still deplete these resources easily.

2. What Are The Advantages Of Alternative Energy Sources?

Alternate energy sources, especially those that are renewable, are seen as the long term solution to deal with the problem of high carbon emissions and climate change.

3. What Are Some Disadvantages Of Alternative Energy Sources?

There are still some disadvantages when considering the use of renewable energy. The harnessing and production of renewable energy can be very expensive when compared to using fossil fuel plants. It is also very difficult to make a lot of energy quickly in a short period of time, and the cost to make the same amount of energy when using renewable power sources like wind turbines is much higher compared to using a coal or oil power station.

Thousands of people have already eliminated their own home electricity bills with a free energy system. They learned how to build it by downloading a step-by-step guide online. You can find out more about how to build this homemade power system at the website link below.

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Biofuel or bio-organic fuel is any plant or animal matter which can be combusted and used as a fuel. Biofuels are one of the new range of renewable energy sources in the world today. So, what are the advantages and disadvantages of biofuels?

The main advantage that biofuel has over other energy sources is the cost factor. With the ever increasing prices of crude oil, biofuel offers a cheaper solution to our energy needs. One of the main reasons for this low cost is that biofuels are made from plant and animal waste. Also, being natural products, they are biodegradable and do not harm the environment when combusted. They are also comparatively lot less polluting. Lesser carbon emissions means that these fuels are environment friendly which is the need of the world today. For conventional fuels it takes years to regenerate whereas there is no such problem for biofuels.

However, biofuels also suffer from many disadvantages, the chief amongst them being the low energy output of the fuels. Doubts have been raised whether biofuels will ever be able to replace the conventional fuels because critics argue that they do not the heat capacity to do it. Also, due to the novelty, the production cost of the fuel is very high currently. Also, certain food crops like maize are needed to make them which may lead to an imbalance. There is a huge quantity of water required which may affect the local water resources.

So, considering the advantages and disadvantages of biofuels, it may not be the best possible solution after all.

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