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Algae a ?Green? Alternative for Improving Water Quality

Unlike me, Microbiologist Walter Mulbry is hands on. He works at the ARS Environmental Management and Byproduct Utilization Research Unit in Beltsville,

In 2003, Mulbry set up four algal turf scrubber (ATS) raceways outside dairy barns. The shallow 100-foot raceways were covered with nylon netting that created a scaffold where the algae could grow.

Within two to three weeks after the ATS system was started up every spring, the raceways supported thriving colonies of green filamentous algae.

Mulbry and his partners harvested wet algae every four to 12 days, dried it, and then analyzed the dried biomass for nitrogen and phosphorus levels. His results indicate that the ATS system recovered 60 to 90 percent of the nitrogen and 70 to 100 percent of the phosphorus from the manure effluents.

More http://www.ars.usda.gov/is/pr/2010/100507.htm
Fri May 07 2010 10:48:09 PM by Manohar algae water quality 1112 views
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