Lecture Handout 16 - BIOT 101 Handout 16 Biofuels and...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
BIOT 101 Handout 16 Biofuels and Bioenergy Vocabulary Algae Anaerobic digestion B2 / B5 / B20 / B100 Biodiesel Bioenergy Biofuel Biogas Biohydrogen Cellulase Cellulose Cellulosic ethanol E10 / E85 Ethanol Fermentation First generation biofuel Flex-fuel vehicle Hydrogenase Methanogenesis Second generation biofuel Third generation biofuel Transesterification Objectives Understand the meanings of bioenergy and biofuel. Understand the arguments for the use of bioenergy and biofuels. Understand what first, second, and third generation biofuels are. Be aware of some of the limitations in the production of these fuels. Be aware of how modern biotechnology is impacting the production of these fuels. Understand how biodiesel is produced. Understand how ethanol is produced. Know how biotechnology is involved in utilizing biomass to produce cellulosic ethanol. Understand other approaches to producing bioenergy from biomass. Understand other approaches to producing sustainable fuels. Understand the roles of living organisms in these processes. 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
BIOT 101 Handout 16 Biofuels and Bioenergy I. As energy prices continue to rise, consumers and entrepreneurs alike are looking at bioenergy to decrease costs as well as provide investment opportunities. Bioenergy is the general term for any form of renewable energy made from organic materials. Biofuels are one form of bioenergy. Specifically, biofuels are transportation fuels, including ethanol and biodiesel, which are produced from two sources: agricultural crops (corn, soybeans, and sugar cane) and biomass (agricultural, wood, animal, and municipal wastes). Other forms of bioenergy are used to produce electricity. Biofuels are not made from petroleum; therefore they are much friendlier for the environment. They contain very little sulfur and no toxic chemicals. Use of biofuels can reduce hydrocarbon and carbon monoxide emissions. Production of biofuels in the United States will stimulate economic development and open new markets for domestic agricultural products. Bioenergy and biofuels provide an opportunity to immediately address energy (and national) security issues by using domestic crops to produce fuel and renewable waste to create energy, thereby lowering our dependence on foreign oil from hostile suppliers. II. First generation biofuels are produced using sugar, starch, vegetable oil or animal fats using conventional technologies. The feedstocks are crops that are rich in simple sugars and starches as well as seeds that can be used as a source for vegetable oils. The two main biofuels produced are ethanol and biodiesel. A. Simple sugars are extracted from crops can be used directly in the production of ethanol by fermentation . The value of corn as a feedstocks for ethanol production is due to the large amount of carbohydrates, specifically starch, present in corn. Carbohydrates such as starch must be prepared prior to fermentation. Acids and enzymes are used to convert the starch into its individual monosaccharides, like glucose, which are subsequently fermented
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/07/2009 for the course BIOT 101 taught by Professor Don during the Fall '09 term at Ivy Tech Community College.

Page1 / 8

Lecture Handout 16 - BIOT 101 Handout 16 Biofuels and...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online