Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 8, Pages 5076-5082Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.02.014
Keywords
Microalgae; Neochloris; Ettlia; Anaerobic digestion; Biodiesel
Funding
- US Department of Energy [DE-FG36-08GO88025]
- Worcester Polytechnic Institute
- Arkansas Biosciences Institute
- Phycological Society of America
- EPSCoR
- Office Of The Director [1003970] Funding Source: National Science Foundation
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The feasibility of growth and oil production by Ettlia oleoabundans fed with anaerobic digester effluents of three agriculture wastes from the Arkansas Delta, catfish processing waste, soybean field waste, and rice hulls, was studied. Compared to standard BBM medium, all three effluents were deficient in phosphate and nitrate, but rich in ammonia and urea. Best growth was on 2% (v/v) soy effluent, but scant oil was produced on any of the effluents. When the three effluents were mixed, growth did not substantially increase, but oil content increased up to sixfold, depending on age of the effluent. Similar to growth in BBM, the main fatty acids produced were palmitic, oleic, and linoleic. These results show that anaerobically digested agricultural wastes can potentially support both growth and high oil productivity in E. oleoabundans. (C) 2011 Elsevier Ltd. All rights reserved.
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