title: Evaluation of hydrolysis-esterification biodiesel production from wet microalgae.
abstract: Wet microalgae hydrolysis-esterification route has the advantage to avoid the energy-intensive units (e.g. drying and lipid extraction) in the biodiesel production process. In this study, techno-economic evaluation of hydrolysis-esterification biodiesel production process was carried out and compared with conventional (usually including drying, lipid extraction, esterification and transesterification) biodiesel production process. Energy and material balance of the conventional and hydrolysis-esterification processes was evaluated by Aspen Plus. The simulation results indicated that drying (2.36MJ/L biodiesel) and triolein transesterification (1.89MJ/L biodiesel) are the dominant energy-intensive stages in the conventional route (5.42MJ/L biodiesel). By contrast, the total energy consumption of hydrolysis-esterification route can be reduced to 1.81MJ/L biodiesel, and approximately 3.61MJ can be saved to produce per liter biodiesel.
authors.affiliation: Tianjin Key Laboratory of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, PR China; Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education, Tianjin 300072, China.
authors.forename: Chunfeng
authors.initials: C
authors.lastname: Song
authors.affiliation: Tianjin Key Laboratory of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, PR China.
authors.forename: Qingling
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Tianjin Key Laboratory of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, PR China.
authors.forename: Na
authors.initials: N
authors.lastname: Ji
authors.affiliation: Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education, Tianjin 300072, China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Deng
authors.affiliation: Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education, Tianjin 300072, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Tianjin Food Safety & Low Carbon Manufacturing Collaborative Innovation Center, College of Food Engineering and Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China. Electronic address: lsh@tust.edu.cn.
authors.forename: Shuhong
authors.initials: S
authors.lastname: Li
authors.affiliation: Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Kitamura
mesh_terms: D056804:Biofuels; D001709:Biotechnology; D002241:Carbohydrates / Q000737:chemistry; D002708:Chlorella / Q000378:metabolism; D003890:Desiccation; D004951:Esterification; D006358:Hot Temperature; D006868:Hydrolysis; D008055:Lipids / Q000737:chemistry; D058086:Microalgae / Q000378:metabolism*; D019301:Oleic Acid / Q000737:chemistry; D013816:Thermodynamics; D014304:Triolein / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D056804:Biofuels; D002241:Carbohydrates; D008055:Lipids; D014867:Water; D014304:Triolein; D019301:Oleic Acid
keywords: Biodiesel; Energy consumption; Esterification; Hydrolysis; Microalgae