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The Dynamic Anaerobic Reactor & Integrated Energy System (DARIES) Model: Model Development, Validation, and Sensitivity Analysis
Author(s) -
Brouwer A.F.,
Grimberg S.J.,
Powers S.E.
Publication year - 2012
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143012x13415215907059
Subject(s) - biogas , anaerobic exercise , environmental science , chemical oxygen demand , electricity generation , waste management , anaerobic digestion , hydraulic retention time , environmental engineering , wastewater , engineering , process engineering , chemistry , power (physics) , methane , physiology , physics , organic chemistry , quantum mechanics , biology
The Dynamic Anaerobic Reactor & Integrated Energy System (DARIES) model has been developed as a biogas and electricity production model of a dairy farm anaerobic digester system. DARIES, which incorporates the Anaerobic Digester Model No. 1 (ADM1) and simulations of both combined heat and power (CHP) and digester heating systems, may be run in either completely mixed or plug flow reactor configurations. DARIES biogas predictions were shown to be statistically coincident with measured data from eighteen full‐scale dairy operations in the northeastern United States. DARIES biogas predictions were more accurate than predictions made by the U.S. AgSTAR model FarmWare 3.4. DARIES electricity production predictions were verified against data collected by the NYSERDA DG/CHP Integrated Data System. Preliminary sensitivity analysis demonstrated that DARIES output was most sensitive to influent flow rate, chemical oxygen demand (COD), and biodegradability, and somewhat sensitive to hydraulic retention time and digester temperature.