TY - JOUR T1 - Enhancement of nutrient removal from swine wastewater digestate coupled to biogas purification by microalgae Scenedesmus spp. AU - Prandini,Jean Michel, AU - da Silva,Márcio Luís Busi, AU - Mezzari,Melissa Paola, AU - Pirolli,Mateus, AU - Michelon,William, AU - Soares,Hugo Moreira, Y1 - 2015/12/05/ PY - 2015/10/07/received PY - 2015/11/25/revised PY - 2015/11/28/accepted PY - 2015/12/25/entrez PY - 2015/12/25/pubmed PY - 2016/12/27/medline KW - Biogas purification KW - Microalgae KW - Piggery wastewater KW - Tertiary treatment SP - 67 EP - 75 JF - Bioresource technology JO - Bioresour Technol VL - 202 N2 - This work investigated the effects of swine wastewater-derived biogas on microalgae biomass production and nutrient removal rates from piggery wastewater concomitantly with biogas filtration. Photobioreactors with dominant Scenedesmus spp. were prepared using non-sterile digestate and exposed to different photoperiods. In the presence of biogas and autotrophic conditions microalgae yield of 1.1±0.2 g L(-1) (growth rate of 141.8±3.5 mg L(-1) d(-1)) was obtained leading to faster N-NH3 and P-PO4(3-) assimilation rate of 21.2±1.2 and 3.5±2.5 mg L(-1) d(-1), respectively. H2S up to 3000 ppmv was not inhibitory and completely removed. Maximum CO2 assimilation of 219±4.8 mg L(-1) d(-1) was achieved. Biological consumption of CH4 up to 18% v/v was verified. O2 up to 22% v/v was controlled by adding acetate to exacerbate oxygen demand by microorganisms. Microalgae-based wastewater treatment coupled to biogas purification accelerates nutrient removal concomitantly producing valuable biomass and biomethane. SN - 1873-2976 UR - https://www.unboundmedicine.com/medline/citation/26700760/Enhancement_of_nutrient_removal_from_swine_wastewater_digestate_coupled_to_biogas_purification_by_microalgae_Scenedesmus_spp_ DB - PRIME DP - Unbound Medicine ER -