title: Application of ADM1 for modeling of biogas production from anaerobic digestion of Hydrilla verticillata.
abstract: The present study focused on the application of anaerobic digestion model no. 1 (ADM1) to simulate biogas production from Hydrilla verticillata. Model simulation was carried out by implementing ADM1 in AQUASIM 2.0 software. Sensitivity analysis was used to select the most sensitive parameters for estimation using the absolute-relative sensitivity function. Among all the kinetic parameters, disintegration constant (kdis), hydrolysis constant of protein (khyd_pr), Monod maximum specific substrate uptake rate (km_aa, km_ac, km_h2) and half-saturation constants (Ks_aa, Ks_ac) affect biogas production significantly, which were optimized by fitting of the model equations to the data obtained from batch experiments. The ADM1 model after parameter estimation was able to well predict the experimental results of daily biogas production and biogas composition. The simulation results of evolution of organic acids, bacteria concentrations and inhibition effects also helped to get insight into the reaction mechanisms.
authors.affiliation: China-Eu Institute for Clean and Renewable Energy, Huazhong University of Science & Technology, Wuhan 430074, China.
authors.forename: Xiaojuan
authors.initials: X
authors.lastname: Chen
authors.affiliation: School of Environmental Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China.
authors.forename: Zhihua
authors.initials: Z
authors.lastname: Chen
authors.affiliation: School of Environmental Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China.
authors.forename: Xun
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Environmental Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China.
authors.forename: Chan
authors.initials: C
authors.lastname: Huo
authors.affiliation: School of Environmental Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China.
authors.forename: Zhiquan
authors.initials: Z
authors.lastname: Hu
authors.affiliation: School of Environmental Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Xiao
authors.affiliation: School of Environmental Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China.
authors.forename: Mian
authors.initials: M
authors.lastname: Hu
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D019149:Bioreactors; D031321:Hydrocharitaceae / Q000737:chemistry / Q000378:metabolism*; D006868:Hydrolysis; D007700:Kinetics; D008962:Models, Theoretical
chemical_list: D056804:Biofuels
keywords: ADM1; Anaerobic digestion; Hydrilla verticillata; Simulation