contains a reduced amount of carbon and higher hydrogen and oxygen content than fossil diesel
Biofuel and its importance
PRESENTATION ON BIOFUEL BYMd. Shahinur Rahaman
INTRODUCTION Two hundred years ago, the world experienced an energy revolution that launched the Industrial Age. After two hundreds years, the industrialized worlds thirst for energy had increased tremendously, that causes a serious energy crisis.
WHY RENEWABLE ENERGY?The fast growing population, rapid modernization and industrialization have relentlessly increased the demand of energy in developing countries like Bangladesh. The current demand of energy in Bangladesh is mostly met from non-renewable resources such as natural gas and coal. Since these sources are non-renewable in nature, the reserve will be depleted one day. In addition, the dependency on these fossil fuels, which are largely been imported, has serious implications on economy and environment. Fossil fuels are coming to the end, scientist say that up to 2040,all the resources of fossil fuels will be finished. So for this reason scientist are focus their view on the alternative renewable energy resource such as solar energy, biogas, biodiesel, wind power, tidal energy etc.
WHAT IS BIOFUEL? A biofuel is a type of fuel whose energy is derived from biological carbon fixation. In other words, Fuel which produced from renewable biological resources such as plant biomass and treated municipal and industrial waste.
WHY BIOFUELS?Therefore, there are many reasons why we are interested in biofuels: To reduce our dependence on fossil fuels To reduce reliance on foreign oil To lower emissions of greenhouse gases To bring business to rural economics
ADVANTAGES OF BIOFUELS1.There is no emission of hazardous gases2.Locally available in every region of the world.3.Friendly with the environment, so they do not cause global warming4.The energy release per unit mass of biofuel is greater than the energy released from the unit mass of fossil fuels.
TWO METHODS TO FORM BIOFUEL :A) SUGAR CROPS AND STARCH AREGROWN AND THROUGH PROCESSOF FERMENTATION, ETHANOL ISPRODUCED.
B) PLANTS ARE GROWN NATURALLY TOPRODUCE OIL LIKE ALGAE.- OILS ARE HEATED TO REDUCEVISCOSITY, THEN DIRECTLY USE ASFUEL FOR DIESEL ENGINES
THEY CAN BE DIVIDED INTO THREECATEGORIES First generation Biofuel • Made from sugar, starch, and vegetable oil. Second generation Biofuel • Made from non-edible plant materials. Third generation Biofuel • Made from algae and microbes.
BIODIESEL Biodiesel is a famous biofuel in Europe Produced from oils or fats using trans-esterification after mixing the biomass with methanol and sodium hydroxide. methanol and sodium hyrox Produced after mixing the biomass with methanol and sodium hyroxide Used for car diesel engiPrProduced after mixing the biomass with methanol and sodium hyroxide Used for car diesel enginesoduced after mixing the biomass with methanol and sodium hyroxide Used for car diesel engines
MAKING BIODIESELInputs: Fat/Vegetable Oil (“Feedstock”) Methanol/Ethanol Catalyst - “Lye” (Sodium Hydroxide or Potassium Hydroxide) WaterOutputs: Biodiesel Dirty Water Glycerine
APPLICATION OF BIODIESEL car diesel engine effective solvent oxygenated fuel
ADVANTAGES OF BIODIESEL Biodiesel can be termed clean fuel as it does not contain carcinogens and its sulphur content is also lesser than the mineral diesel. It possesses high biodegradability and lubricating property Improves engine efficiency and operating life cycle. Domestic resource, Readily mixes with petroleum diesel fuel in any ratio Higher flash point makes it safer in transport and storage; Greatly reduces particulate matter and carbon monoxide emissions.
DISADVANTAGES OF BIODIESELHigher production cost.Biodiesel is more likely than petroleum dieselto attract moisture.Poor low temperature properties.
BIOALCOHOLS Biologically produced alcohols, most commonly ethanol, and less commonly propanol and butanol. Synthesis: Bioalcohols are produced by the action of microorganisms and enzymes through the fermentation of sugars or starches (easiest), or cellulose (which is more difficult).
APPLICATION OF BIO-ETHANOL Petrol engines as a replacement for gasoline fireplaces fuel for vehicles Ethanol fuel is the most commonly used bio-fuel in the world and particularly in Brazil