New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

BioFuels and Wind/Hydropower

by: Carina Sauter

BioFuels and Wind/Hydropower Ecology 1000

Marketplace > University of Georgia > Ecology > Ecology 1000 > BioFuels and Wind Hydropower
Carina Sauter
GPA 3.79

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

These notes discuss biomass fuels and bioenergy derived from solar energy. Also in this lecture, we continued the discussion of alternative energy with wind and hydropower. We discussed the advan...
Introduction to Environmental Issues
Class Notes
25 ?




Popular in Introduction to Environmental Issues

Popular in Ecology

This 4 page Class Notes was uploaded by Carina Sauter on Sunday October 2, 2016. The Class Notes belongs to Ecology 1000 at University of Georgia taught by Connelly in Fall 2016. Since its upload, it has received 9 views. For similar materials see Introduction to Environmental Issues in Ecology at University of Georgia.


Reviews for BioFuels and Wind/Hydropower


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 10/02/16
Biofuels • Biomass Fuels o Bioenergy: energy contained in firewood and other plant matter o Derived from solar energy o Traditional fuels: wood, charcoal, animal dung o Fossil fuel takes carbon out of coal, oil and natural gas deposits whereas biofuel § Where does the CO2 come from? • CO2 used to make ethanol from trees comes from the air, not the ground – when it is burned, it does not increase the net amount of CO2 in the air o Ex. Corn § Great source of energy when you burn it § BUT why waste food for our cars and machinery? • waste of land and fertilizer o Ex. Kudzu § Weedy, fast growing plant originally used to stop roadside erosion § Epidemic – can’t stop it from growing and it is beginning to harm other plants all over the south • Kudzunol o Process the plant into ethanol o Ex. Switchgrass § Advantages: • Native to US • No CO2 • Needs little fertilizer/water • Comes back every year § Disadvantages: • Not produced on a large scale – slow • No government subsidy available • Enzymes are expensive – chemicals that help to break it down) o Ex. Algae § Oceans, lakes, any sitting water – the surface turs green (algae) and we can use this to turn into fuel § Helps to absorb CO2 – place near power plants(!!) o Biofuel Advantages: § Can recycle sewage as fertilizer § Carbon neutral – not pumping more CO2 into atmosphere (no additional from burning fuel) § Lower NOx and Sox § Abundant § Widely distributed in world § Domestic o Biofuel Disadvantages: § Is it really carbon neutral? • Observe from cradle to grave • Are you suing energy to produce it before you burn it? § Costs • transportation, processing, fertilizers, water, etc. § Net gain is not much à No single biofuel is appropriate everywhere Alternative Energy: Wind and Hydropower • Wind Power o The windmill serves as the original model of the wind turbine o How it works: § The blade works like an airplane wing, and turns a generator using gears to produce energy § Uneven heating on earth makes cool air move to warmer air à wind; winds from high to low pressure o Where is the greatest potential? § Higher = windier § Deserts near mountains § Prairies § Oceans o Denmark § World power of wind energy • 20% of nations power with a goal of 50% by 2030 • Denmark also commands 60% of the global market for wind turbines • Jobs and profit o Nationally § 2/3 of wind power in US: Texas, California, Iowa, Minnesota, and Washington § Wind Farms = cluster of turbines § Currently produce less than .5% of global electricity needs § ~6% of the total renewable energy § But, fastest growing renewable sector (10x increase in last decade) o Advantages: § No fuel need – no drilling, wastes, etc.; very clean § No pollutants released (CO2, NO2, SO2) § Domestic energy source § Not subject to disruptions of single energy plants – if one breaks, the other 19 still work o Disadvantages: § Bird/bat deaths from migration (may interfere with bird movement corridors because they tend to follow the easiest path of wind) § Aesthetics – not the prettiest (oceans) § Intermittent wind; not very predictable – use offshore locations § Windy areas usually not near urban areas where we need energy • Hydropower o Capturing the energy of water moving under the force of gravity o 1. Impoundment plants (Dams) § ex. Buford Dam and Lake Lanier o 2. Run-of-River plants § no walls, less costly, less ecologically disruptive BUT dependent on sustained and predictable flow o Globally § 16% of global demand of electricity § 2% of global energy § China, Brazil, and Canada are the world’s largest producers § Norway and Paraguay rely 100% on hydropower for their electricity needs o Advantages: § Fossil fuel no needed § No pollutants emmited § Energy cheap to produce (after expense of plant construction) § Power produced can be matched to demand § Das also used for flood control § Water retention (recreation and water supply) o Disadvantages: § Effect on environment and human communities (Ex. Three Gorges Dam in China) § Ecosystem alteration and flow changes § Peak flows no longer seasonal § Sediment accumulation and transport altered § Temperature and oxygen in stream changed § Natural disaster/ flood risk


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Janice Dongeun University of Washington

"I used the money I made selling my notes & study guides to pay for spring break in Olympia, Washington...which was Sweet!"

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.