Toward a nonpolluting energy system
Article Abstract:
Advances in fuel cell and photovoltaic technologies promise to bring pollution-free energy sources closer to reality. While cheap fossil fuel and entrenched infrastructure have made it difficult for these innovative technologies to penetrate the market, public policy and increasing research expenditures are working towards the greater adoption of these technologies. In the short- to medium-term, photovoltaic technology is projected to become a major source of electric power. In the longer term, hydrogen will steadily become the nonpolluting alternative to liquid fuels used by motor vehicles and aircraft.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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Rotating ion-exchange system removes perchlorate
Article Abstract:
Calgon Carbon Corp. of Pittsburgh, PA, has developed process for treating drinking water contaminated with small amounts of perchlorate. The method, probably among the first research studies to be marketed, employs an ion-exchange procedure primarily used in displacing nitrate from waste streams. The process also uses a continuously rotating countercurrent system that brings much lesser brine waste, according to Raman Venkatesh, a company senior research engineer. The Calgon technology is yet to be confirmed economical by drinking water services.
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Has developed process for treating drinking water contaminated with small amounts of perchlorate
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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Tapping energy from the sediment-water interface
Article Abstract:
A fuel cell prototype used for underwater monitoring applications is described. The fuel cell utilizes a variable load connection of an anode embedded in seafloor sediment to a cathode exposed to seawater. This electrode configuration allows organic detritus in the sediment to be used as fuel and dissolved oxygen in the seawater to be used as an oxidant.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 2001
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