Crown Capital Eco Management Green Energy | Biofuels
Green energy could come from such sources available in our environment that are naturally replenished and efficient like tides, wind, sunlight and geothermal heat. It is very different from low-carbon energy as the former does not add to the amount of carbon dioxide in the atmosphere at all, thus, coming with minimal environmental harm and greenhouse gas.
Concerns in climate change and increasing oil prices are some of the contributing factors in drawing the spotlight to renewable energy and its potential for commercialization. Green energy can effectively replace our conventional fuel of today in all its main uses, which are in heating, vehicle fuel and electricity generation sectors. In fact, 19% of the electricity generated around the world today comes from renewable sources. Furthermore, since the emergence of biofuels in the United States 6 years ago, consumption of conventional oil has decreased significantly.
For a green energy resource or technology to be sustainable, it has to give the maximum environmental advantage while still serving its purpose.
BIOMASS AS a fuel for BOILERs
The future of biomass in boilersdepends upon the development of the markets for fossil fuels and on policy decisionsregarding the biomass market.
Biomass for energy often mean plant base material although can equally apply to both animal and vegetable draw from material. Biomass is actually a biological material derive form living or recently living organisms. Biomass chemical composition is carbon based and is composed of a mixture of organic molecules containing hydrogen, usually including atoms of oxygen, often nitrogen and also small quantities of other atoms, including alkali, alkaline earth and heavy metals, metals are often found in functional molecules such as the porphyrins which include chlorophyll which contains magnesium.
5 basic categories of material of biomass such as:
•Virgin wood- from forestry, arboriculture activities or from wood processing.
•Energy crops- high yield crops grown specifically for energy applications
•Agricultural residues- residues from agriculture harvesting or processing
• Food waste- from food and drink manufacture, preparation and processing, and post-consumer waste
•Industrial waste and co-products- from manufacturing and industrial processes.
The Pros and Cons
Advantage: financial net saving, conservation of fossil fuel resources, job opportunities creation and CO2 and NOx emissions reduction.
Disadvantage: environmental impacts of biomass such as land and water resources, soil erosion, loss of biodiversity and deforestation. Problems associated when burning biomass in boilers are fouling, marketing, low heating value, storage and collections and handling.
*boiler = “a closed vessel in which water or other liquid is heated, steam or vapor is generated, steam is superheated, or any combination thereof, under pressure or vacuum, for use external to itself, by the direct application of energy from the combustion of fuels, from electricity or nuclear energy.”
*biomass = one of the earliest ever discovered sources of energy but only comes with specific properties