title: A novel horizontal photobioreactor for high-density cultivation of microalgae.
abstract: Microalgae are a promising source of biofuels and bioproducts, as they consume CO2 to grow, multiply quickly, and can be cultivated in wastewater and on marginal land. Development of low-cost and high-efficiency microalgal cultivation systems is important to the cost-competitiveness of algae. A floating horizontal photobioreactor (HBR) was developed that is inexpensive and scalable, as it is manufactured from inexpensive plastic film and is modular. Its performance was successfully tested using the marine microalgae Nannochloris atomus Butcher CCAP 251/4A in a 65-L prototype unit. High biomass concentration of 4.0 g L(-1) and productivity of 12.9 g m(-2)d(-1) was achieved indoors under artificial illumination of 31.3 klux (435 μmol m(-2)s(-1)). Outdoors, during semi-continuous operation in Florida, the HBR achieved over the course of 165 days a maximum biomass concentration of 4.3 g L(-1) and an average biomass productivity of 18.2 g m(-2)d(-1) without any contamination issues.
authors.affiliation: Patel College of Global Sustainability, University of South Florida, 4202 East Fowler Avenue, CGS 101, Tampa, FL 33620, USA.
authors.forename: Ioannis
authors.initials: I
authors.lastname: Dogaris
authors.affiliation: Patel College of Global Sustainability, University of South Florida, 4202 East Fowler Avenue, CGS 101, Tampa, FL 33620, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Welch
authors.affiliation: Culture Fuels Inc., 500 7th Avenue, Suite 17A, New York, NY 10018, USA.
authors.forename: Andreas
authors.initials: A
authors.lastname: Meiser
authors.affiliation: Culture Fuels Inc., 500 7th Avenue, Suite 17A, New York, NY 10018, USA.
authors.forename: Lawrence
authors.initials: L
authors.lastname: Walmsley
authors.affiliation: Patel College of Global Sustainability, University of South Florida, 4202 East Fowler Avenue, CGS 101, Tampa, FL 33620, USA. Electronic address: gphilippidis@usf.edu.
authors.forename: George
authors.initials: G
authors.lastname: Philippidis
mesh_terms: D056804:Biofuels; D018533:Biomass; D058086:Microalgae / Q000254:growth & development*; D058433:Photobioreactors; D062065:Wastewater
chemical_list: D056804:Biofuels; D062065:Wastewater
keywords: Microalgae cultivation; Nannochloris atomus; Photobioreactor design