title: Microalgal Cultivation in Treating Liquid Digestate from Biogas Systems.
abstract: Biogas production via anaerobic digestion (AD) has rapidly developed in recent years. In addition to biogas, digestate is an important byproduct. Liquid digestate is the major fraction of digestate and may contain high levels of ammonia nitrogen. Traditional processing technologies (such as land application) require significant energy inputs and raise environmental risks (such as eutrophication). Alternatively, microalgae can efficiently remove the nutrients from digestate while producing high-value biomass that can be used for the production of biochemicals and biofuels. Both inorganic and organic carbon sources derived from biogas production can significantly improve microalgal production. Land requirement for microalgal cultivation is estimated as 3% of traditional direct land application of digestate.
authors.affiliation: MaREI Centre, Environmental Research Institute, University College Cork, Cork, Ireland; Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400044, China.
authors.forename: Ao
authors.initials: A
authors.lastname: Xia
authors.affiliation: MaREI Centre, Environmental Research Institute, University College Cork, Cork, Ireland; School of Engineering, University College Cork, Cork, Ireland. Electronic address: jerry.murphy@ucc.ie.
authors.forename: Jerry D
authors.initials: JD
authors.lastname: Murphy
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D002244:Carbon / Q000378:metabolism; D007220:Industrial Waste; D058086:Microalgae / Q000254:growth & development* / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism; D018505:Waste Management
chemical_list: D056804:Biofuels; D007220:Industrial Waste; D002244:Carbon; D009584:Nitrogen
keywords: biogas; carbon dioxide; digestate; microalgae; nutrient removal