Energy and waste discussion. Once again.

Interesting article in the Guardian today on waste management and use of biowaste for energy.

Ban food waste from landfill for renewable energy, urges thinktank.

And the original article:

How to get the anaerobic digestion sector moving.

It would be most interesting to actually study the waste-energy infrastructure of several cities in a comparative fashion, taking into account surface area (built up area), population density and other waste sources (farm/industry where relevant). And then see what is feasible in each circumstance, and whether any solution can be rolled out to more locations. Interestingly, comments to the post on the guardian website show people looking at their own front yard recycling bins and local recycling centres, undoubtedly feeling more is better. Hardly anyone probably knows what the energy consequence (output/input) of recycling or waste management is in their area. Having lived in cities with all manner of recycling and hardly any, waste incinerators and landfills, I have no clue what is best. However, I have learned that for some forms of recycling to work, you need pure stuff. That is, not confused citizens  who dump whatever wherever. And if that is the case, the cost (and energy demand) of transporting and sorting the waste is probably not worth it.

How about in the long run? Do individual city constraints simply hinder all progress? A comparative study across cities could provide further insight.

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