title: Biodiesel production potential of wastewater treatment high rate algal pond biomass.
abstract: This study investigates the year-round production potential and quality of biodiesel from wastewater treatment high rate algal pond (WWT HRAP) biomass and how it is affected by CO2addition to the culture. The mean monthly pond biomass and lipid productivities varied between 2.0±0.3 and 11.1±2.5gVSS/m2/d, and between 0.5±0.1 and 2.6±1.1g/m2/d, respectively. The biomass fatty acid methyl esters were highly complex which led to produce low-quality biodiesel so that it cannot be used directly as a transportation fuel. Overall, 0.9±0.1g/m2/d (3.2±0.5ton/ha/year) low-quality biodiesel could be produced from WWT HRAP biomass which could be further increased to 1.1±0.1g/m2/d (4.0ton/ha/year) by lowering culture pH to 6-7 during warm summer months. CO2addition, had little effect on both the biomass lipid content and profile and consequently did not change the quality of biodiesel.
authors.affiliation: Chemical and Materials Engineering Department, University of Auckland, New Zealand. Electronic address: ameh820@aucklanduni.ac.nz.
authors.forename: Abbas
authors.initials: A
authors.lastname: Mehrabadi
authors.affiliation: National Institute of Water and Atmospheric Research Ltd. (NIWA), PO Box 11-115, Hamilton 3200, New Zealand. Electronic address: Rupert.Craggs@niwa.co.nz.
authors.forename: Rupert
authors.initials: R
authors.lastname: Craggs
authors.affiliation: Chemical and Materials Engineering Department, University of Auckland, New Zealand. Electronic address: m.farid@auckland.ac.nz.
authors.forename: Mohammed M
authors.initials: MM
authors.lastname: Farid
mesh_terms: D056804:Biofuels / Q000032:analysis; D018533:Biomass; D002245:Carbon Dioxide / Q000378:metabolism; D000460:Chlorophyta / Q000378:metabolism; D005227:Fatty Acids / Q000737:chemistry / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D050356:Lipid Metabolism; D058086:Microalgae / Q000378:metabolism*; D061005:Ponds; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry
chemical_list: D056804:Biofuels; D002245:Carbon Dioxide; D005227:Fatty Acids; D062065:Wastewater
keywords: Biodiesel; CO(2) addition; High rate algal pond; Low-cost biofuel; Microalgae