PMID- 27595701 OWN - NLM STAT- MEDLINE DCOM- 20170209 LR - 20221207 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 220 DP - 2016 Nov TI - Techno-economic and life-cycle assessment of an attached growth algal biorefinery. PG - 360-368 LID - S0960-8524(16)31219-6 [pii] LID - 10.1016/j.biortech.2016.08.091 [doi] AB - This study examined the sustainability of generating renewable diesel via hydrothermal liquefaction (HTL) of biomass from a rotating algal biofilm reactor. Pilot-scale growth studies and laboratory-scale HTL experiments were used to validate an engineering system model. The engineering system model served as the foundation to evaluate the economic feasibility and environmental impact of the system at full scale. Techno-economic results indicate that biomass feedstock costs dominated the minimum fuel selling price (MFSP), with a base case of $104.31per gallon. Life-cycle assessment results show a base-case global warming potential (GWP) of 80gCO2-eMJ(-1) and net energy ratio (NER) of 1.65 based on a well-to-product system boundary. Optimization of the system reduces MFSP, GWP and NER to $11.90Gal(-1), -44gCO2-eMJ(-1), and 0.33, respectively. The systems-level impacts of integrating algae cultivation with wastewater treatment were found to significantly reduce environmental impact. Sensitivity analysis showed that algal productivity most significantly affected fuel selling price, emphasizing the importance of optimizing biomass productivity. CI - Copyright (c) 2016 Elsevier Ltd. All rights reserved. FAU - Barlow, Jay AU - Barlow J AD - Biological Engineering, 4130 Old Main Hill, Utah State University, Logan, UT 84322, USA. FAU - Sims, Ronald C AU - Sims RC AD - Biological Engineering, 4130 Old Main Hill, Utah State University, Logan, UT 84322, USA. FAU - Quinn, Jason C AU - Quinn JC AD - Mechanical & Aerospace Engineering, 4130 Old Main Hill, Logan, UT 84322-4130, USA. Electronic address: jason.quinn@colostate.edu. LA - eng PT - Journal Article PT - Validation Study DEP - 20160826 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Biofuels) RN - 0 (Waste Water) SB - IM MH - Biofilms/growth & development MH - *Biofuels MH - Biomass MH - *Bioreactors MH - Biotechnology/economics MH - Costs and Cost Analysis MH - Models, Theoretical MH - Pilot Projects MH - Wastewater/analysis OTO - NOTNLM OT - Algal biofilm OT - Greenhouse gas emissions OT - Hydrothermal liquefaction OT - Net energy ratio OT - Renewable fuel OT - Sustainability OT - Wastewater treatment EDAT- 2016/09/07 06:00 MHDA- 2017/02/10 06:00 CRDT- 2016/09/07 06:00 PHST- 2016/07/19 00:00 [received] PHST- 2016/08/23 00:00 [revised] PHST- 2016/08/24 00:00 [accepted] PHST- 2016/09/07 06:00 [entrez] PHST- 2016/09/07 06:00 [pubmed] PHST- 2017/02/10 06:00 [medline] AID - S0960-8524(16)31219-6 [pii] AID - 10.1016/j.biortech.2016.08.091 [doi] PST - ppublish SO - Bioresour Technol. 2016 Nov;220:360-368. doi: 10.1016/j.biortech.2016.08.091. Epub 2016 Aug 26.