Green engineering for waste management
"Green engineering" is based on the idea of designing, selling and using processes and products that are technically and economically viable while, at the same time, minimizing pollution, as well as health and environmental risks. This is expressed in twelve principles that were formulated nearly a quarter of a century ago by the United States Environmental Protection Agency, and which the engineering and research firm Demede Engineering & Technology attempts to apply in all of its work. Its most recent development, a pilot plant for the anaerobic digestion of organic waste that was commissioned by the Universidad de Cadiz, is going to be used for research in the field of biogas production using wastewater, sludge and organic waste from landfills and purification plants.