Alternative Technologies
Alternative technologies include the following:
- Anaerobic digestion
- Composting
- Fuel cells
- Fuels for automobiles (besides gasoline and diesel)
- Alcohol (either ethanol or methanol)
- Biodiesel
- Vegetable oil
- Greywater
- Solar panels
- Silicon-based
- Photosynthetic "Gratzel cells" (Titanium dioxide)
- Landfill gas extraction from landfills
- Mechanical biological treatment
- Recycling
- Wind generators
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Famous quotes containing the word alternative:
“If the alternative is to keep all just men in prison, or give up war and slavery, the State will not hesitate which to choose.”
—Henry David Thoreau (1817–1862)