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Algae Turf Scrubber Research by ARS Scientists 7

Algae?already being used for biofuel production. It could also be used to remove nitrogen and phosphorus in livestock manure runoff. Researchers at the ARS Environmental Management and Byproduct Utilization Research Unit work on algae turf scrubber to reduce nutrient load (nitrogen and phosphorous)in manure effluent using raceway ponds.

The results of their experiment include:

1. Algae productivity was highest in the spring and declined during the summer
2. High water temperature in summer leads to contamination with snails and midge larve
3. ATS system recovered 60 to 90 percent of the nitrogen and 70 to 100 percent of the phosphorus from the manure effluents.
4. Cost for this capture was comparable to other manure management practices?around $5 to $6 for each pound of nitrogen that was recovered and around $25 for each pound of phosphorus that was recovered.
Tue May 11 2010 01:34:14 AM by Parkavi 1979 views

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