title: Algal polycultures enhance coproduct recycling from hydrothermal liquefaction.
abstract: The aim of this study was to determine if polycultures of algae could enhance tolerance to aqueous-phase coproduct (ACP) from hydrothermal liquefaction (HTL) of algal biomass to produce biocrude. The growth of algal monocultures and polycultures was characterized across a range ACP concentrations and sources. All of the monocultures were either killed or inhibited by 2% ACP, but polycultures of the same species were viable at up to 10%. The addition of ACP increased the growth rate (up to 25%) and biomass production (53%) of polycultures, several of which were more productive in ACP than any monoculture was in the presence or absence of ACP. These results suggest that a cultivation process that applies biodiversity to nutrient recycling could produce more algae with less fertilizer consumption.
authors.affiliation: School of Natural Resources and Environment, University of Michigan, 440 Church Street, Ann Arbor, MI 48109, USA. Electronic address: cgodwin@umich.edu.
authors.forename: Casey M
authors.initials: CM
authors.lastname: Godwin
authors.affiliation: Department of Chemical Engineering, University of Michigan, 2300 Hayward Street, Ann Arbor, MI 48109, USA.
authors.forename: David C
authors.initials: DC
authors.lastname: Hietala
authors.affiliation: School of Natural Resources and Environment, University of Michigan, 440 Church Street, Ann Arbor, MI 48109, USA.
authors.forename: Aubrey R
authors.initials: AR
authors.lastname: Lashaway
authors.affiliation: School of Natural Resources and Environment, University of Michigan, 440 Church Street, Ann Arbor, MI 48109, USA.
authors.forename: Anita
authors.initials: A
authors.lastname: Narwani
authors.affiliation: Department of Chemical Engineering, University of Michigan, 2300 Hayward Street, Ann Arbor, MI 48109, USA; Department of Chemical Engineering, Pennsylvania State University, 158 Fenske Laboratory, University Park, PA 16802, USA.
authors.forename: Phillip E
authors.initials: PE
authors.lastname: Savage
authors.affiliation: School of Natural Resources and Environment, University of Michigan, 440 Church Street, Ann Arbor, MI 48109, USA.
authors.forename: Bradley J
authors.initials: BJ
authors.lastname: Cardinale
mesh_terms: D044822:Biodiversity; D056804:Biofuels; D018533:Biomass; D001709:Biotechnology / Q000379:methods; D000460:Chlorophyta / Q000502:physiology*; D018920:Coculture Techniques; D059027:Recycling; D014867:Water
chemical_list: D056804:Biofuels; D014867:Water
keywords: Algal biofuels; Biodiversity; Coproduct recycling; Hydrothermal liquefaction; Nutrient recycling