biogas is an eco friendly fuel
Answers
Answered by
7
yes, biogas is an eco friendly fuel...
Answered by
6
Compressed Natural Gas (CNG) is a fossil fuel and as such, its burning increases the net amount of CO2 in the atmosphere.
On the other hand, biogas is not a fossil fuel, it´s a renewable form of energy and its burning does not increase the net amount of CO2 in the atmosphere.

That´s at least the simple and short response. The reality is a bit more complex, especially if you take a look at the whole processes.
If one generates the biogas out of cow dung for example, in that case, the positive impact can be even greater since the alternative is usually that the cow dung decomposes naturally liberating to the atmosphere CO2 and methane. A molecule of methane is about 23 times more potent in generating global warming than a molecule of CO2, therefore, capturing the methane in a biodigester/gasometer and burning it, converting the methane into CO2, reduces the global warming factor.
On the other hand, if the biogas originates from crops (with the use of fertilizers and pesticides) which were purposely planted to generate biogas, in that case, the impact is significantly worse. Luckily, however, most of the time this does not apply and if vegetal matter does get used, it´s normally a waste product.
Biogas is normally produced in much smaller quantities than CNG and is used locally. Thus the impact of transportation is generally small.
Natural gas can also be liquefied and transported for example in huge ships. The conversion between states, gas to liquid, however, requires a significant input of energy
On the other hand, biogas is not a fossil fuel, it´s a renewable form of energy and its burning does not increase the net amount of CO2 in the atmosphere.

That´s at least the simple and short response. The reality is a bit more complex, especially if you take a look at the whole processes.
If one generates the biogas out of cow dung for example, in that case, the positive impact can be even greater since the alternative is usually that the cow dung decomposes naturally liberating to the atmosphere CO2 and methane. A molecule of methane is about 23 times more potent in generating global warming than a molecule of CO2, therefore, capturing the methane in a biodigester/gasometer and burning it, converting the methane into CO2, reduces the global warming factor.
On the other hand, if the biogas originates from crops (with the use of fertilizers and pesticides) which were purposely planted to generate biogas, in that case, the impact is significantly worse. Luckily, however, most of the time this does not apply and if vegetal matter does get used, it´s normally a waste product.
Biogas is normally produced in much smaller quantities than CNG and is used locally. Thus the impact of transportation is generally small.
Natural gas can also be liquefied and transported for example in huge ships. The conversion between states, gas to liquid, however, requires a significant input of energy
Similar questions