Research Article
Mar 1975
Nutrient Transformations in Mass Cultures of Marine Algae
Authors: Joel C. Goldman and John H. RytherAuthor Affiliations
Publication: Journal of the Environmental Engineering Division
Volume 101, Issue 3
Abstract
Two mass cultures of marine algae were maintained for 24 continuous weeks on mixtures of secondarily treated wastewater and seawater. Nitrogen removal and algal growth were related to both nitrogen loading in the form of variations in the waste-seawater mixture and changes in the dilution rate. Nitrogen assimilation was limited to about 4 mg/l. High nitrogen removals were associated with a combination of algal assimilation and ammonia evolution at the high pond pH values attained. Algal concentrations represented as both particulate carbon (PC) and particulate nitrogen (PN) decreased linearly with increases in the dilution rate. Maximum algal yields of 6 g PC m2 day1 occurred at a dilution rate of 0.75 day1.
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Published In
Journal of the Environmental Engineering Division
Volume 101 • Issue 3 • March 1975
Pages: 351 - 364
Copyright
© 1975 American Society of Civil Engineers.
History
Published in print: Mar 1975
Published online: Feb 11, 2021
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Joel C. Goldman
Asst. Scientist, Dept. of Biology, Woods Hole Oceanographic Instit., Woods Hole, Mass.
John H. Ryther
Sr. Scientist, Dept. of Biology, Woods Hole Oceanographic Instit., Woods Hole, Mass.
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