Navigation Links
Algae advances as a 'green' alternative for improving water quality
Date:5/7/2010

This press release is available in Spanish.

Algae--already being eyed for biofuel production--could be put to use right away to remove nitrogen and phosphorus in livestock manure runoff, according to an Agricultural Research Service (ARS) scientist. That could give resource managers a new eco-friendly option for reducing the level of agricultural pollutants that contaminate water quality in the Chesapeake Bay.

Microbiologist Walter Mulbry works at the ARS Environmental Management and Byproduct Utilization Research Unit in Beltsville, Md., which is located in the Chesapeake Bay watershed. In 2003, Mulbry set up four algal turf scrubber (ATS) raceways outside dairy barns in Beltsville. The shallow 100-foot raceways were covered with nylon netting that created a scaffold where the algae could grow.

For the next three years, from April until December, a submerged water pump at one end of the raceways circulated a mix of fresh water and raw or anaerobically digested dairy manure effluent over the algae. Within two to three weeks after the ATS system was started up every spring, the raceways supported thriving colonies of green filamentous algae.

Algae productivity was highest in the spring and declined during the summer, in part because of higher water temperatures and also because the raceways provided snails and midge larvae ample opportunity to graze on the 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. They also calculated that the 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.


'/>"/>

Contact: Ann Perry
ann.perry@ars.usda.gov
301-504-1628
United States Department of Agriculture-Research, Education, and Economics
Source:Eurekalert

Related biology news :

1. Study involving more than 100 scientists provides new insights on green algae
2. Green algae -- the nexus of plant/animal ancestry
3. Montana State University researcher finds renewed interest in turning algae into fuel
4. Algae could one day be major hydrogen fuel source
5. Harmful algae taking advantage of global warming
6. Algae from the ocean a sustainable energy source of the future
7. Montana State researchers receive grant to study algae as a source of biofuel
8. Engineering algae to make fuel instead of sugar
9. Success for first outdoor, large-scale algae-to-biofuel research project in Nevada
10. Study links seabird deaths to soap-like foam produced by red-tide algae
11. Dust deposited in oceans may carry elements toxic to marine algae
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/19/2017)... York , April 19, 2017 ... as its vendor landscape is marked by the presence ... market is however held by five major players - ... Together these companies accounted for nearly 61% of the ... the leading companies in the global military biometrics market ...
(Date:4/17/2017)... 17, 2017 NXT-ID, Inc. (NASDAQ: NXTD ... filing of its 2016 Annual Report on Form 10-K on Thursday ... ... available in the Investor Relations section of the Company,s website at ... website at http://www.sec.gov . 2016 Year Highlights: ...
(Date:4/13/2017)... 2017 According to a new market research report ... Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, and Region ... expected to grow from USD 14.30 Billion in 2017 to USD 31.75 ... ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:8/23/2017)... ... 2017 , ... NDA Partners Chairman Carl Peck, MD , announced today ... at the FDA’s Center for Devices and Radiological Health and recognized leader in the ... , Prior to his FDA experience, Dr. Sheets served in senior technical leadership roles ...
(Date:8/22/2017)... , ... August 22, 2017 , ... ... pipeline built upon patented KBioBox technology, the extended GUIDE-Seq ananlysis. KBioBox has adapted ... computation pipeline to be provide scientists with easy to understand reports, extended indel ...
(Date:8/21/2017)... , ... August 21, 2017 , ... ... a leading Chinese bio security firm, to bring its proprietary CANARY pathogen detection ... of the relationship, the Chinese firm has purchased an undisclosed number of PathSensors’ ...
(Date:8/18/2017)... ... August 18, 2017 , ... Producers of the ... Hybrids, Inc. in an upcoming episode, scheduled to broadcast fourth quarter 2017. American ... Federal Hybrids, the independent, family-owned seed company. Educating audiences about its broad portfolio ...
Breaking Biology Technology: