Copy of Food Waste
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PRESENTATION OUTLINE
A Global Issue
(NYTimes, Feb. 2015)
1/3 of all food produced in the world is never consumed.
About 60 million metric tons of food is wasted a year in the US, and about 32 million metric tons of it end up in municipal landfills.
1/3 of all food produced in the world is never consumed.
About 60 million metric tons of food is wasted a year in the US, and about 32 million metric tons of it end up in municipal landfills.
Photo by Mark Seton
Food Waste in Landfills
(NYTimes, Feb. 2015).
Most food waste is thrown away in landfills, where it decomposes and emits methane and carbon dioxide.
Globally, it creates 3.3 billion metric tons of greenhouse gases annually, about 7% of the total emissions, according to the report.
Most food waste is thrown away in landfills, where it decomposes and emits methane and carbon dioxide.
Globally, it creates 3.3 billion metric tons of greenhouse gases annually, about 7% of the total emissions, according to the report.
Photo by jritch77
Decomposition
(Article published by EPA)
Food waste is comprised of cellulose and hemicellulos.
These compounds are converted to CH4 and CO2 by bacteria under anaerobic conditions.
Food waste is comprised of cellulose and hemicellulos.
These compounds are converted to CH4 and CO2 by bacteria under anaerobic conditions.
