Is Biomass Really a Clean Energy Resource?
As we strive to find alternative energy resources, many potential solutions are on the table. Biomass energy is one such solution or is it?
Biomass energy is unique in that it has existed in primitive forms since the early days of mankind. Burning wood in a cave is a form of biomass energy, which is simply the conversion of an organic material in a manner that produces heat. For example, a fire converts the organic wood into heat. Therein, however, lays the problem.
Global warming is a much debated issue with everyone having a strong opinion and no one seemingly willing to listen to the other side. Whatever your view on this subject, what is clear is we are producing an absolute ton of carbon-based gases in our modern civilization. This is a key issue since the amount of carbon in the atmosphere is a key factor in climate regulation on our planet.
To understand the problems of biomass as an energy form, one has to understand the biomass cycle that occurs on the planet. Simplified, the biomass cycle regulates the amount of carbon in our atmosphere. The biomass, primarily in the form of plants, uses carbon to grow and the biosphere effectively acts as a sponge for carbon.
This sponge effect, however, has limits. As with a sponge in your kitchen, the biomass can only suck up so much carbon at one time. When there is too much carbon in the atmosphere or we shrink our “sponge” with deforestation and such, we run the risk of overwhelming the atmosphere with carbon gases.
If our atmosphere has excessive carbon, heat is trapped and all hell begins to break loose. From a practical standpoint, this means our relatively mild climate on Earth will start becoming more chaotic. After the most recent hurricane season, that definitely is not a good thing.
Taking the biomass cycle into consideration, the negatives of all biomass energy production are that they create more carbon gases. A caveman sitting next to a fire in a cave is using biomass energy to produce heat, but the black smoke is a very nasty carbon pollutant. In modern terms, biomass energy doesn’t really resolve the amount of carbon we are putting into the atmosphere. Yet, there is an argument on the other side of the biomass coin.
Proponents of biomass argue it is a better energy source than fossil fuels. The basis of this argument is that plants [biomass] have taken in much smaller amounts of carbon gases over a shorter period of time than fossil fuels.
Thus, burning them is a carbon neutral situation. The problem, of course, is that even if this concept is correct, we are not cutting down our carbon emissions. At this point in time, we need to be reducing carbon gasses, not maintaining our current output.
It is undisputable biomass has its problems. It is a better alternative than fossil fuels, but how much so?
Why Use Biomass for Our Energy Needs: The Pros
The primary positive aspect of biomass is it is part of the biocycle of life. This means it isn’t toxic to the environment because it is more or less the environment. An additional benefit is the fact biomass almost always breaks down relatively quickly to its natural elements. This means a biomass fuel spill would be far less damaging than an oil spill, particularly in the long run.
The burning of biomass does kick out carbon dioxide among other gases. Carbon dioxide, of course, is a greenhouse gas. Proponents of biomass energy, however, argue that the gases produced are not really a problem because they are part of the current biocycle. By this, they are arguing that carbon dioxide is a natural element produced in nature and they are correct.
Fossil fuels, on the other hand, are outside of the natural biocycle in the world because they are buried in the ground, which effectively means they are not part of naturally occurring phases. As we dig and drill fossil fuels out of the ground, we are adding the harmful elements found in them to a system that cannot withstand the massive influx.
We already use many biomass fuels in our daily lives. The first cavemen used them to light fires for warmth, protection and cooking. Today, we use them to power our automobiles in the form of biodiesal and bioethanol.
Whether you realize it or not, these two fuels have been going into our cars at gas stations since 1990 in parts of the country. The reason is they are used as additives in gasoline for the purpose of cutting harmful carbon dioxide emissions. In fact, federal law mandates their use in certain cities such as Los Angeles as well as in most government vehicles.
Carbon dioxide produced from vehicles makes up over a third of all the greenhouse gases produced in our country. Bioethanol made from corn cuts these emissions by over 20 percent compared to your basic gasoline. Biodiesel made from soybeans cuts emissions by as much as 80 percent. Any way you cut it, using biomass fuel is a step in the right direction.
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