Cellulosic biofuel - fuel options

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Cellulosic biofuel

Ethanol is traditionally made from food crops like corn and sugarcane, but it can also be made from cellulosic feedstocks, non-food crops or inedible waste products. Examples of sources for cellulosic biofuel are: crop residues, Miscanthus grass, switch grass, paper pulp, packaging, cardboard, sawdust, wood chips, rice hulls, corn stover and the byproducts of lawn and tree maintenance. Once the raw material to make the cellulosic biofuel is broken down with enzymes, it can be fermented to make ethanol. This chart shows how cellulosic biofuel, and other alternative fuels, can be used to reduce greenhouse gasses:

Coal And Biomass Co Converstion To Transportation Fuels

There are tons of cellulose containing raw materials that could be used to produce ethanol that are simply thrown away each year in the U.S. alone. Examples of this are over 100 million dry tons of urban wood wastes and forest residues and over 150 million dry tons of corn stover and wheat straw. That material plus just a fraction of the other paper, wood and plant products that could be used to create ethanol instead of garbage would be enough to make the U.S. independent of foreign oil if processed into ethanol and used. This theme is true in other parts of the world as well.

Financial concerns stop cellulosic biofuel from really taking off and providing a consistent source of fuel. This type of ethanol production involves an additional step, the breakdown of the raw material into glucose with enzymes, which translates into a higher cost. However, the raw material is abundant, and the reduction of greenhouse gas emissions from cellulosic biofuel can be up to 90% compared to fossil fuel petroleum, significantly greater than those obtained from traditional 1st generation biofuels. Cellulosic raw material can be easily grown in land marginal for actual agriculture, or simply be diverted from landfills, reducing the costs associated with landfills, in order to make the production of cellulosic biofuel more cost-effective. Cost-effective processes, such as using inexpensive enzymes to break down the cellulose, are being researched and developed as well.

Please see: renewable energy: biomass and biofuel

Green Urban Planning

Today, green urban planning is more important than ever. We provide facts about seven cities that are focused on utilizing various approaches to sustainable development. You can find out about many sources of renewable energy here.

City planning committees around the globe are becoming more focused on the importance of using sources of renewable energy, rather than fossil fuels and other finite resources. Our goal is to teach our readers about eight of the greenest cities in the world. As you peruse this site, you will gain insight into the worlds of renewable energy, urban planning, green building and sustainable mass transit. For instance, you will learn about an example of a bus system, located in Curitiba, Brazil, that serves as a standard of efficiency for other metropolises throughout the world...

 

Sustainability Trends

Ideas for a Greener Home

  • Reduce, reuse, recycle
  • Use eco-friendly cleaning supplies
  • Favor cloth over paper products
  • Chlorine-free baby diapers/ wipes
  • Choose natural lawn care - stop using pesticides and synthetic fertilizers
  • Use biodegradable detergent and oxygen bleach
  • For clean, safe drinking water without all of the waste - use a water filter and a reusable bottle
  • Install low-flow toilets

 

Energy Saving Ideas

  • Use CFL or LED light bulbs
  • Use Energy Star labeled equipment
  • Turn off all home and office equipment when not in use
  • Turn off lights when not in use
  • Turn down the thermostat - lowering it by just one degree can reduce heating energy costs significantly
  • Avoid "phantom loads" (electrical equipment that still uses energy even after turned off) by using a power strip
  • Reduce your water heater temperature from 140 degrees to 120 degrees
  • Install double-pane windows