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... not necessary because with a good vent pipe it dries fast enough anyway. All composting toilets eventually need some end-product removal. A full-size composting toilet does not need to have solids removed ...
... pools that concentrate dissolved solids through evaporation. The use of evaporation ponds to obtain salt from sea water is one of the oldest applications of solar energy. Modern uses include concentrating ...
Battery recycling is a recycling activity that aims to reduce the number of batteries being disposed as municipal solid waste. It is widely promoted by environmentalists concerned about contamination, ...
Recursive Recycling is a technique where a function, in order to accomplish a task, calls itself with some part of the task or output from a previous step. In municipal solid waste and waste reclamation ...
... profit. Unfortunately government subsidies are necessary to make buy-back centres a viable enterprise, as according to the United States Nation Solid Wastes Management Association it costs on average US$50 ...
Taxonomy by Zaragoza Online