In the article, C&EN senior editor Marc S. Reisch explains that the technology termed membrane filtration also removes bacteria and chlorine-resistant parasites such as Cryptosporidium and Giardia. Starting with highly contaminated water, membrane filtration can produce potable water that can be purer than water from pristine reservoirs or deep artesian wells, the article notes.
Reisch describes a growing market for membrane filtration in Florida, Texas, California and other locales that must treat brackish water. Much of the demand in the United States results from increasingly stringent Federal regulations for drinking water drawn from surface sources. Demand for the technology also is strong abroad, especially in areas such as the Middle East that face severe water shortages and produce drinking water by desalination of sea water. A related C&EN story focuses on global chemical industry efforts to make safe, secure sources of drinking water more widely available.
ARTICLE # 5 EMBARGOED FOR 9 A.M., EASTERN TIME, April 23, 2007 "Filtering out the bad stuff: Polymeric membranes are increasingly being used to clean up water for drinking and industrial use"
These stories will be available on April 23 at:
Keeeping It Clean (Pat Short)
http://pubs.acs.org/cen/coverstory/85/8517cover.html
Filtering Out the Bad Stuff (Marc Reisch)
http://pubs.acs.org/cen/coverstory/85/8517cover2.html
FOR ADVANCE INFORMATION, CONTACT:
Michael Bernstein
ACS News Service
Phone: 202-872-6042
Fax: 202-872-4370
Email: m_bernstein@acs.org