Question

Place the following energy sources in order of their least net carbon dixide emission into the atmosphere, where 1. = lowest net carbon, and 5. = highest net carbon.

In your calculation, take into account:

1. How much carbon dioxide (or CO2 equivalent) is emitted per unit energy generated.
2. If the source is renewable, how much carbon dixide (or CO2 equivalent) is removed from the atmosphere each year by that resource.
3. How much energy is needed to produce and deliver that energy source.

      -       1.       2.       3.       4.       5.         

Biodiesel (Algae-based)

      -       1.       2.       3.       4.       5.         

Biodeisel (soybean oil based).

      -       1.       2.       3.       4.       5.         

Grain Ethanol

      -       1.       2.       3.       4.       5.         

Biodeisel (waste oil based)

      -       1.       2.       3.       4.       5.         

Biogas (recovered biogenic methane="landfill methane")

Answer 1

a) Biodiesel

Green growth fuel, algal biofuel, or algal oil is an option in contrast to fluid non-renewable energy sources that utilizes green growth as its wellspring of vitality rich oils. Likewise, green growth powers are an option to regularly known biofuel sources, for example, corn and sugarcane. At the point when produced using kelp (macroalgae) it tends to be known as ocean growth fuel or kelp oil.

A few organizations and government offices are subsidizing endeavors to lessen capital and working expenses and make green growth fuel creation monetarily feasible. Like non-renewable energy source, green growth fuel discharges CO2 when copied, however dissimilar to petroleum derivative, green growth fuel and different biofuels just discharge CO2 as of late expelled from the air by means of photosynthesis as the green growth or plant developed. The vitality emergency and the world nourishment emergency have lighted enthusiasm for algaculture (cultivating green growth) for making biodiesel and different biofuels utilizing land inadmissible for farming. Among algal energizes' appealing attributes are that they can be developed with insignificant effect on crisp water assets, can be created utilizing saline and wastewater, have a high glimmer point, and are biodegradable and moderately innocuous to the earth whenever spilled. Green growth cost more per unit mass than other second-age biofuel crops because of high capital and working expenses, however are professed to yield somewhere in the range of 10 and multiple times more fuel per unit region.

So according to me it should be placed at number 2

b) Biodeisel (soybean oil based)

Soy biodiesel is better for the earth since it is produced using sustainable assets and has lower discharges contrasted with oil diesel. The utilization of biodiesel in a regular diesel motor outcomes in generous decrease of unburned hydrocarbons, carbon monoxide, and sediment. The utilization of biodiesel doesn't build the CO2 level in the climate, since developing soybeans devours likewise CO2. Biodiesel is additionally more biodegradable than traditional diesel.

So this should be placed at 2

c) Grain ethanol - the figures at 22% less CO2 outflows underway and use for corn ethanol contrasted with fuel and a 56% decrease for cane ethanol. Carmaker Ford reports a 70% decrease in CO2 outflows with bioethanol contrasted with petroleum for one of their adaptable fuel vehicles.

hence it can be put at number 3

d) Biodeisel (waste oil based) -

Probably the most earth agreeable biodiesel feedstocks are utilized cooking oil and waste oil and grease.

Squander oil and grease is regularly viewed as waste. It is commonly discarded at wastewater treatment plants and landfills, albeit in some cases it is gathered by rendering organizations to be decontaminated and sold for nonedible applications, for example, burner fuel.

This waste-based biofuel offers essentially lower carbon dioxide and ozone depleting substance outflows than those from petroleum products, lessening ecological contamination, sparing space in landfill and diminishing the expenses of looking after seepage/water treatment systems.

hence it can be put at number 3

e ) Biogas - Biogas is basically methane (CH4) and carbon dioxide (CO2) and may have modest quantities of hydrogen sulfide (H2S), dampness and siloxanes. The gases present in biogas like methane, hydrogen, and carbon monoxide (CO) can be combusted or oxidized with oxygen. This vitality discharge permits biogas to be utilized as a fuel; it tends to be utilized for any warming reason, for example, cooking. It can likewise be utilized in a gas motor to change over the vitality in the gas into power and warmth.

so it can be put at number 5 because much carbon dioxide is produced and the net carbon is also high.