title: Algal bioproducts derived from suspended solids in intensive land-based aquaculture.
abstract: Land-based aquaculture produces suspended solids in culture pond and settlement pond waters that could be harvested as a bioresource. Suspended solids were quantified, characterised and harvested from these two sources to assess their suitability for conversion to bioproducts. The suspended solids of settlement ponds were less concentrated (87.6±24.7mgL(-1)) than those of culture ponds (131.8±8.8mgL(-1)), but had a higher concentration of microalgae (27.5±4.0%) and consequently higher particulate organic carbon (24.8±4.7%) and particulate nitrogen (4.0±0.8%). The microalgal community also differed between sources with a higher concentration of fatty acids in the biomass from settlement ponds. Consequently, biochar produced from biomass harvested from settlement ponds was higher in organic carbon and nitrogen, with a lower cation exchange capacity. In conclusion, we characterised a renewable and potentially valuable bioresource for algal bioproducts derived from suspended solids in intensive land-based aquaculture.
authors: AIMS@JCU, Australian Institute of Marine Science and School of Marine and Tropical Biology & Centre for Sustainable Tropical Fisheries and Aquaculture, James Cook University, Townsville, Queensland, Australia. s.castine@cgiar.org
authors: Sarah A
authors: SA
authors: Castine
authors: Nicholas A
authors: NA
authors: Paul
authors: Marie
authors: M
authors: Magnusson
authors: Michael I
authors: MI
authors: Bird
authors: Rocky
authors: R
authors: de Nys
mesh_terms: D017756:Aquaculture / Q000379:methods*; D002244:Carbon / Q000302:isolation & purification* / Q000378:metabolism*; D058086:Microalgae / Q000145:classification / Q000378:metabolism*; D059013:Microbial Consortia / Q000502:physiology*; D009584:Nitrogen / Q000302:isolation & purification* / Q000378:metabolism*; D013045:Species Specificity; D013535:Suspensions
chemical_list: D013535:Suspensions; D002244:Carbon; D009584:Nitrogen