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The long haul?

Article Abstract:

Ethanol produced from corn is increasingly used as fuel in the United States. It is suggested that the net gains in converting corn ethanol into fuel is minimal, and cellulose ethanol that can be produced from cornstalks and other grasses are a better and more effective source of renewable energy leading to a cleaner environment than corn.

Author: Wald, Matthew L.
Publisher: Scientific American, Inc.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 2007
Production management, Manufacturing processes, Industrial organic chemicals, not elsewhere classified, Corn, Corn Farming, Ethanol, Ethyl Alcohol Manufacturing, Production processes, Alcohol, Alcohol industry, Alcohol, Denatured

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Water filters

Article Abstract:

Most water filters do not provide a total filtration of water. Instead, the filters remove specific molecules and ions from the water, thereby prolonging the filters' lifespans and producing selectively purer water.

Author: Bloomfield, Louis A.
Publisher: Scientific American, Inc.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1999
Water, Water treatment, Filters (Separation), Liquid filtration

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Subjects list: United States, Usage
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