title: Biomethane production system: Energetic analysis of various scenarios.
abstract: The energy consumption models of biomethane production system were established, which are more rigorous and universal than the empirical data reported by previous biomethane system energetic assessment work. The energy efficiencies of different scenarios considering factors such as two digestion modes, two heating modes of digester, with or without heat exchange between slurry and feedstock, and four crude biogas upgrading technologies were evaluated. Results showed the scenario employing thermophilic digestion and high pressure water scrubbing technology, with heat exchange between feedstock and slurry, and heat demand of digester supplied by the energy source outside the system has the highest energy efficiency (46.5%) and lowest energy consumption (13.46 MJth/Nm(3) CH4), while scenario employing mesophilic digestion and pressure swing adsorption technology, without heat exchange and heat demand of digester supplied by combusting the biogas produced inside the system has the lowest energy efficiency (15.8%) and highest energy consumption (34.90 MJth/Nm(3) CH4).
authors: Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
authors: Bin
authors: B
authors: Wu
authors: Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: xpzhang@ipe.ac.cn.
authors: Xiangping
authors: X
authors: Zhang
authors: Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
authors: Di
authors: D
authors: Bao
authors: Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
authors: Yajing
authors: Y
authors: Xu
authors: Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
authors: Suojiang
authors: S
authors: Zhang
authors: Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim 7491, Norway.
authors: Liyuan
authors: L
authors: Deng
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D019149:Bioreactors / Q000382:microbiology; D001709:Biotechnology / Q000379:methods*; D008697:Methane / Q000378:metabolism*; D008962:Models, Theoretical; D013816:Thermodynamics
chemical_list: D056804:Biofuels; D008697:Methane
keywords: Biomethane system; Energetic assessment; Energy efficiency; Energy flow; Material flow