Carolina EcoKits – Ethanol Biofuel EcoKit (with prepaid coupon)

Bio Fuels Facts

  • Learn about alcohol fermentation and the role of enzymes
  • Investigate the ethanol production process with enzymatic digestion
  • Use scientific methodology to compare yeast fermentation of different concentrations
  • Includes prepaid coupon to request living material at your convenience

Grades 9-12. Students apply scientific methodology to investigate enzyme digestion of cellulose and yeast alcohol fermentation in the presence of different concentrations of glucose. They then generate a standard curve to determine the concentration of glucose in solution. After understanding the reactions taking place, students discuss advantages and disadvantages of various sources of ethanol. Kit accommodates a class of 32 students working in 8 groups of 4.
Kit includes:

  • Cellulase, 5 g
  • 4 Pieces of Tubing, 12″
  • 40 Syringes, 1 mL
  • 40 Pipets, 1 mL
  • 60 Medicine Cups
  • Glucose, 5 g
  • Cellulose, 5 g
  • Buffer Solution, pH 5
  • Packet of Activated Dry Yeast, 7 g
  • 24 Test Tubes, 15 mL
  • 17 Weigh Boats
  • 16 Transfer Pipets
  • Teacher’s Manual and Reproducible Student Guide

Needed but not included: Deionized or Distilled Water, Flask, 500 mL, 2 Flasks, 250 mL, 4 Flasks with Caps or Parafilm®, 100 mL, Graduated Cylinder, 100 mL, 8 Test Tube Racks, Scale, Clock or Stopwatch, Thermometer, 8 Marking Pens, Microwave or Hot Plate (optional), Shaking Incubator or Incubator (optional).

List Price: $ 104.95

Price: [wpramaprice asin=”B006B9785E”]

Biomass is both Man’s Oldest Renewable Energy Source and Newest

Man started to use biomass for energy on the day that our ancestors discovered fire, and used it for cooking. Biomass is actually just another word for biological-mass. Biomass is anything that has been grown or has lived, except for fossil fuels (coal, oil, natural gas etc). Fossil fuels were of course created by the decay of living organisms many millennia ago in pre-history and are biomass in that sense, but these are not included within the term ‘biomass’ as used by renewable energy experts.

Biomass takes many forms, some of the most well known are wood, straw, biowaste, wood chip, waste paper, organic slurries from the processing of foodstuffs, livestock farming, sewage treatment, chicken litter etc. I guess that most of us can think of a hundred or more examples of biomass with a little thought, and they can all be burnt, or fermented and digested to provide energy. They all contain energy from the sun, which was bound up into their carbon chemistry while they were alive, and that energy can be released for man’s use without increasing the net additional carbon dioxide (greenhouse gas) burden on our planet, as long as we continually replant, breed and re-grow replacement biomass sources in place of those we use.

So biomass can also be grown as a crop for use as fuel. If the biomass is to be grown it will need to be selected to be of high calorific value (give of lots of heat when burnt), grow fast, need little fertilizing or watering, require low power requirements during growing and be cheaply harvested. However, the growing of biomass to use as biofuel on a large scale would have the effect of reducing available land for food crops. This could be a bad thing for the poor, if the cost of food rose.

So where can we find sustainable renewable biomass without taking up good food producing farmland?

Well, as we hinted earlier there is a huge, largely untapped source of biomass, in the waste produced by modern society. Why not use that? (Some purists would say that some waste – like plastics is made from fossil fuel (oil) sources. I would respond that these should, in principle, be removed from the biomass before use, and recycled.)

Biomass can also be separated at source by the public by the rapidly increasing number of councils which provide a separate collection for biowaste, including food waste which is the highest heat producing waste of them all when burnt or digested, and these days comprises between 15% and 25% of all household (domestic) waste by weight. Western societies do throw away an awful lot of food, and in many nations the amount of food discarded is continuing to rise, although overall tonnages of waste created year by year by the public have nearly stabilised.

So society must now rediscover biomass as a significant energy source. We think that we have progressed far away from the simple log fire, which used biomass. In truth we have not. By using fossil fuels in massive quantities, we have simply been raiding the bank, we have been stealing oxygen from the earth’s atmosphere and replacing the oxygen with the greenhouse gas, and global warming gas, carbon dioxide.

We simply cannot go on doing this without reaping climate change disaster on the earth.

We can change our ways. It is possible, but we need thoughtful people like you. People who read articles like this one, to understand this truth, and appreciate the great urgency for change to renewable fuels. The planet needs all of us that do understand to keep ourselves informed and to influence our friends, and persuade them of the value of using biomass as a fuel, and in particular waste biomass is one of the best ways of doing this.

If you want to be one of those that understand renewable energy and what the adoption of renewables can do to help future generations to survive climate change, please do visit our web site.

Our web site is The Renewable Energy News Blog, an upcoming and growing site, with a great deal to say about, and report upon in the renewable energy sector. Be part of the massive sustainable energy challenge!

In particular we think that you would find this article interesting Governments Must Start Now to Put Real Research Money Into Anaerobic Digestion.

Steve also writes for this dog breed web site at The Dog Breeds Compendium.

Article Source:
http://EzineArticles.com/?expert=Steve_Last

Agriculture-Based Biofuels: Overview and Emerging Issues

Bio Fuels Facts

Since the late 1970s, U.S. policymakers at both the federal and state levels have enacted a variety of incentives, regulations, and programs to encourage the production and use of agriculture-based biofuels. Initially, federal biofuels policies were developed to help kick-start the biofuels industry during its early development, when neither production capacity nor a market for the finished product was widely available. Federal policy has played a key role in helping to close the price gap between biofuels and cheaper petroleum fuels. Now, as the industry has evolved, other policy goals (e.g., national energy security, climate change concerns, support for rural economies) are cited by proponents as justification for continuing policy support.

The U.S. biofuels sector has responded to these government incentives by expanding output every year since 1996, with important implications for the domestic and international food and fuel sectors. The production of ethanol (the primary biofuel produced in the United States) has risen from about 175 million gallons in 1980 to 10.7 billion gallons per year in 2009. U.S. biodiesel production is much smaller than its ethanol counterpart, but has also shown strong growth, rising from 0.5 million gallons in 1999 to an estimated 776 million gallons in 2008 before being impeded by the nationwide financial crisis.

Despite this rapid growth, total agriculture-based biofuels production accounted for only about 4.3% of total U.S. transportation fuel consumption in 2009. Federal biofuels policies have had costs, including unintended market and environmental consequences and large federal outlays (estimated at to billion in 2009). Despite the direct and indirect costs of federal biofuels policy and the small role of biofuels as an energy source, the U.S. biofuels sector continues to push for greater federal involvement. But critics of federal policy intervention in the biofuels sector have also emerged.

Current issues and policy developments related to the U.S. biofuels sector that are of interest to Congress include the following:

• Many federal biofuels policies (e.g., tax credits and import tariffs) require routine congressional monitoring and occasional reconsideration in the form of reauthorization or new appropriations funding.

• The 10% ethanol-to-gasoline blend ratio—known as the “blend wall”—poses a barrier to expansion of ethanol use. The Environmental Protection Agency (EPA), in October 2010, issued a waiver to allow ethanol blending (per gallon of gasoline) for standard engines of up to 15% for use in model year 2007 and newer light-duty motor vehicles. However, the vehicle limitation to newer models, coupled with infrastructure issues, is likely to limit rapid expansion of blending rates.

• The evolution of EPA’s methodology for estimating lifecycle greenhouse gas emission reductions of different biofuels production paths (relative to their petroleum counterparts) and the treatment of indirect land use changes will determine which biofuels qualify under the Renewable Fuel Standard.

The slow development of cellulosic biofuels has raised concerns about the industry’s ability to meet large federal usage mandates, which, in turn, has raised the potential for future EPA waivers of mandated biofuel volumes and has contributed to a cycle of slow investment in and development of the sector.Since the late 1970s, U.S. policymakers at both the federal and state levels have enacted a variety of incentives, regulations, and programs to encourage the production and use of agriculture-based biofuels. Initially, federal biofuels policies were developed to help kick-start the biofuels industry during its early development, when neither production capacity nor a market for the finished product was widely available. Federal policy has played a key role in helping to close the price gap between biofuels and cheaper petroleum fuels. Now, as the industry has evolved, other policy goals (e.g., national energy security, climate change concerns, support for rural economies) are cited by proponents as justification for continuing policy support.

The U.S. biofuels sector has responded to these government incentives by expanding output every year since 1996, with important implications for the domestic and international food and fuel sectors. The production of ethanol (the primary biofuel produced in the United States) has risen from about 175 million gallons in 1980 to 10.7 billion gallons per year in 2009. U.S. biodiesel production is much smaller than its ethanol counterpart, but has also shown strong growth, rising from 0.5 million gallons in 1999 to an estimated 776 million gallons in 2008 before being impeded by the nationwide financial crisis.

Despite this rapid growth, total agriculture-based biofuels production accounted for only about 4.3% of total U.S. transportation fuel consumption in 2009. Federal biofuels policies have had costs, including unintended market and environmental consequences and large federal outlays (estimated at to billion in 2009). Despite the direct and indirect costs of federal biofuels policy and the small role of biofuels as an energy source, the U.S. biofuels sector continues to push for greater federal involvement. But critics of federal policy intervention in the biofuels sector have also emerged.

Current issues and policy developments related to the U.S. biofuels sector that are of interest to Congress include the following:

• Many federal biofuels policies (e.g., tax credits and import tariffs) require routine congressional monitoring and occasional reconsideration in the form of reauthorization or new appropriations funding.

• The 10% ethanol-to-gasoline blend ratio—known as the “blend wall”—poses a barrier to expansion of ethanol use. The Environmental Protection Agency (EPA), in October 2010, issued a waiver to allow ethanol blending (per gallon of gasoline) for standard engines of up to 15% for use in model year 2007 and newer light-duty motor vehicles. However, the vehicle limitation to newer models, coupled with infrastructure issues, is likely to limit rapid expansion of blending rates.

• The evolution of EPA’s methodology for estimating lifecycle greenhouse gas emission reductions of different biofuels production paths (relative to their petroleum counterparts) and the treatment of indirect land use changes will determine which biofuels qualify under the Renewable Fuel Standard.

The slow development of cellulosic biofuels has raised concerns about the industry’s ability to meet large federal usage mandates, which, in turn, has raised the potential for future EPA waivers of mandated biofuel volumes and has contributed to a cycle of slow investment in and development of the sector.

List Price: $ 0.99

Price: [wpramaprice asin=”B0064P23WS”]