Few places in the U.S. are as well suited to developing renewable energy as the contaminated sites known as “brownfields.” But as communities from Philadelphia to California are discovering, government support is critical to enable solar and wind entrepreneurs to make use of these abandoned lands.
The production of waste, especially with many countries emerging into powerful economies, has become a problem of such dimensions that something definite has to be done.Many new technologies are being developed to process, recycle and reuse waste, some combining waste treatment processes in the same plant to produce a variety of useful products such as electrical energy, diesel, heat, carbon black and other recyclable materials. Latest estimates show that there are 431 waste-to-energy (WTE) plants in Europe and 89 in the United States (2004). The U.S. recycles 14 percent of its trash in WTE plants.
