In today’s article covering alternative forms of energy I would like to cover two of the more popular options that have been emerging for some time now.
Ethanol (C2H5OH):
Ethanol is a flammable, colorless chemical compound typically produced from the fermentation of vegetables and grains. It is best known as the alcohol found in alcoholic beverages, but has many other uses such as solvents, sterilizing agents and fuel. There a benefits to Ethanol in that it is a renewable source of fuel and burns very cleanly releasing few waste gasses as pollutants. However, there are some serious drawbacks to relying on ethanol as a primary fuel source.
Ethanol is a much cleaner burning hydrocarbon than most forms of petroleum fuel including compressed natural gas. It can be produced from a wide variety of plant stocks including: corn, grain, potatoes and practically any kind of fruit or vegetable with a wide range of efficiency. Some plants produce Ethanol much more efficiently than others while some are virtually impossible to ferment into alcohol. Currently the most commonly used plants are corn, grain and sugar cane.
There are several problems with the widespread use of Ethanol.
One such issue that most people do not take into consideration is that the primary waste product of the fermentation process used to create Ethanol is carbon dioxide (CO2). When the yeast metabolizes the natural sugars during the fermentation process, they release CO2 as a by product. This is the very gas we are supposed to avoid releasing into the atmosphere by using alternative fuels.
Another problem with ethanol is the massive amount of food quantities that are required to produce usable Ethanol. Even the most alcohol resistant yeast can only survive in about a 15% alcohol mixture. To be usable as fuel, large amounts of food stocks have to be fermented at 15% efficiency and then the Ethanol has to be distilled out of the remaining liquid. This severely impacts the availability and cost of basic food categories such as corn, grain and sugar. This price impacts other food products that rely on these products as base ingredients. Already this year we have seen increased prices of corn, grain, beef, milk, bread and many other products that rely heavily on these Ethanol producing items as a base feedstock. Increased production of Ethanol based on these base food stocks, threatens to cause increased demand for these products and limited supplies. Corn and grain are staple food products and could seriously impact all areas of food, thus severely increasing prices and making some items unavailable.
The final consideration of Ethanol is its horrible efficiency as a fuel. It takes massive amounts of energy to plant, harvest and transport the materials required to produce Ethanol. The fermentation and distillation process adds to this energy cost considerably. Once we have a burnable fuels source, we find that when added to gasoline, even at an 85/15 mixture (85% gas, 15% Ethanol) it severely decreases the CAFÉ standards of the engine burning the Ethanol.
Cellulosic ethanol uses certain waste products that it converts into complex sugars and then ferments those sugars. While this process is has the potential for reusing waste products for fuel, it does not address any of the other problems with Ethanol.
Therefore, the question still remains with Ethanol due to its manufacturing cost in energy and the release of massive amounts of CO2 in the process, the cost increases of its base products and the inneffency of the fuel itself, are we actually doing more harm than good by pushing for increased Ethanol production?
Hybrid Vehicles:
Fuel efficiency is paramount to reducing the amount of emissions that we release into the atmosphere. Along those lines, we have seen the rapid development of Hybrid vehicles over the last few years. These vehicles boast some of the best fuel efficiency on the road, but have dark secrets that no one wants to hear.
While the fuel efficiency of some Hybrid vehicles is impressive, most cannot achieve CAFÉ standards much over what small efficient gasoline only vehicles can produce. This efficiency comes at a sever cost, however. For a Hybrid vehicle to function there are essentially two engines that operate a symbiotic form of propulsion. Each vehicle contains an internal combustion engine and an electric one. As the gasoline portion of the engine operates, it charges large batteries which in turn operate the vehicle when not under gas power and assist the gasoline engine when needed.
To be efficient, these vehicles must be light weight and store large amounts of energy while charging on the gasoline engines. The light weight is achieved by using more plastic and exotic lightweight alloys in their construction. This makes the vehicles less safe and less able to protect their occupants from injury during a crash. All the additional plastic used to lighten the vehicles currently comes from petroleum sources and these exotic alloys use massive amounts of energy in their production. This not only increases the cost monetary of the vehicles but the energy and environmental costs as well.
The final dirty little secret about Hybrid vehicles is the massive amount of environmental damage caused during the manufacturing of the batteries they operate on. All Hybrid vehicles currently use nickel based batteries in their design. These batteries retain a memory and eventually must be replaced. They cause massive amounts of pollution to produce, must be replaced every three to five years, cannot be reconditioned or reused once they are replaced and cannot easily be disposed of. I recently wrote an article illustrating the massive amounts of pollution that the nickel mining and refining process causes and the overall environmental damage that hybrid vehicles cause. You may read the entire article here: The Hybrid Lie. In the study cited in this article, most Hybrid vehicles scored worse than 90% of gasoline powered vehicles on environmental damage due to the damage done in their manufacturing process, including my Ford F-150 and my wife’s Ford Expedition.
The only thing you can conclude from the data in the “Dust to Dust” study from the above article is that if you truly care for the environment, you will not purchase a hybrid vehicle.
Tomorrow I will cover two more variations of alternative energy. One which has great potential that we have unfortunately not developed to its full potential over the past three decades.