• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

What is Biofuel?

Extracts from this document...

Introduction

BIOFUELS Biofuels are produced from vegetable matter and they account for 15% of the world's energy production. These are mainly used in LEDC's(Less economically developed countries) for cooking and heating. For example oilseed rape can be converted into biodiesel fuel. Now scientists are interested in biofuels for transport.Italy produces some of it's diesel form rape seed oil,and 5% of Australia's diesel is biodiesel. * Sugar cane and wheat can be fermented to produce ethanol which can be either used on its own or blended with petrol.Seeing that the world's supplies of oil are going to run out by the end of the Twenty-first century another possibility is Hydrogen (derived from water) ...read more.

Middle

* Another problem is how to carry hydrogen around, since to stay liquid and occupy a convenient volume it needs to be stored below -253�c. * On the bright side more efficient solar cells might provide energy to split water to electrolysis. * Also one promising area of research is the use of metal hydrides, which are solid compounds of a metal and hydrogen and the hydrogen could be produced from them as needed by heating.As mentioned before storing hydrogen means cooling it to -253�c which cots four times more than making the equivalent amount petrol. * One possible method is storing hydrogen as a solid.This doesn't mean freezing it, it means combining it as a metal hydride. ...read more.

Conclusion

And in regards to the heavy weight of the hydrides chemist's are looking at alloy hydrides which don't weigh as much. A fuel is a substance that releases energy that can do work. Most fuels release this energy during combustion reactions. And they release their energy when they make bonds with oxygen. So what properties make an ideal fuel? ...Petrol is a popular fuel but is it ideal? For it's mass petrol produces a lot of energy, which makes the expense of transporting and storing it worthwhile. It doesn't produce solid waste that needs to be dumped. But an ideal fuel produces no harmful by-product when it burns and petrol does (CO2) .Even if it's just CO2 and water we know that CO2 is a harmful greenhouse gas and it's continued output today will lead to global warming. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Organic Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Organic Chemistry essays

  1. This is a mini-project on fuel - topics include petrol and fossil fuels.

    Gas deposits are also a source of helium. Helium is used to fill balloons because it is very light and does not burn. Air is another source of useful gases. Carbon dioxide, the gas that makes the bubbles in fizzy drinks, comes from air. Air also contains a little neon gas.

  2. Do fuel cell systems offer a feasible alternative to combustion engines in minimizing the ...

    Also, how does a fuel cell battery compete with a combustion engine? This paper looks at the kind of alternative the fuel cell system would be. 3. Background. A fuel cell is an electrochemical device in which a chemical reaction takes place.

  1. What is crude oil?

    The difference in oxygen pressure in the lungs and in the parts of the body needing oxygen is very slight. The haemoglobin is very finely tuned to absorb and release oxygen at just the right times. Carbon monoxide, on the other hand, binds very strongly to the iron in haemoglobin.

  2. GCSE Chemistry Revision Notes - everything!

    Collect several jars of gas When you bubble carbon dioxide through limewater, a white precipitate forms. Carbon dioxide as a gas is colourless, denser than air and fairly soluble in water. Carbon dioxide is a solid below -78°C. Reactions of carbon dioxide Carbon dioxide reacts with water to give a solution of a weak acid, carbonic acid.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work