Low algal diversity systems are a promising method for biodiesel production in wastewater fed open reactors

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dc.citation.firstpage67en_US
dc.citation.issueNumber1en_US
dc.citation.journalTitleAlgaeen_US
dc.citation.lastpage79en_US
dc.citation.volumeNumber30en_US
dc.contributor.authorBhattacharjee, Meenakshien_US
dc.contributor.authorSiemann, Evanen_US
dc.date.accessioned2015-05-11T16:08:48Zen_US
dc.date.available2015-05-11T16:08:48Zen_US
dc.date.issued2015en_US
dc.description.abstractPlanktivorous fish which limit zooplankton grazing have been predicted to increase algal biodiesel production in wastewater fed open reactors. In addition, tanks with higher algal diversity have been predicted to be more stable, more productive, and to more fully remove nutrients from wastewater. To test these predictions, we conducted a 14-week exﾭperiment in Houston, TX using twelve 2,270-L open tanks continuously supplied with wastewater. Tanks received algal composition (monocultures or diverse assemblage) and trophic (fish or no fish) treatments in a full-factorial design. Monocultures produced more algal and fatty acid methyl ester (FAME) mass than diverse tanks. More than 80% of lipids were converted to FAME indicating potentially high production for conversion to biodiesel (up to 0.9 T ha-1 y-1). Prolific algal growth lowered temperature and levels of total dissolved solids in the tanks and increased pH and dissolved oxygen compared to supply water. Algae in the tanks removed 91% of nitrate-N and 53% of phosphorus from wastewater. Monoﾭcultures were not invaded by other algal species. Fish did not affect any variables. Our results indicated that algae can be grown in open tank bioreactors using wastewater as a nutrient source. The stable productivity of monocultures suggests that this may be a viable production method to procure algal biomass for biodiesel production.en_US
dc.identifier.citationBhattacharjee, Meenakshi and Siemann, Evan. "Low algal diversity systems are a promising method for biodiesel production in wastewater fed open reactors." <i>Algae,</i> 30, no. 1 (2015) The Korean Society of Phycology: 67-79. http://dx.doi.org/10.4490/algae.2015.30.1.067.en_US
dc.identifier.doihttp://dx.doi.org/10.4490/algae.2015.30.1.067en_US
dc.identifier.urihttps://hdl.handle.net/1911/80199en_US
dc.language.isoengen_US
dc.publisherThe Korean Society of Phycologyen_US
dc.relation.urihttp://creativecommons.org/licenses/by-nc/3.0/en_US
dc.rightsThis is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.en_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/en_US
dc.subject.keywordbiofuelen_US
dc.subject.keywordfatty acid methyl esteren_US
dc.subject.keywordmonocultureen_US
dc.subject.keywordopen reactoren_US
dc.subject.keywordwastewateren_US
dc.titleLow algal diversity systems are a promising method for biodiesel production in wastewater fed open reactorsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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