TY - JOUR
T1 - Application of Anaerobic Digestion Model No. 1 to describe the syntrophic acetate oxidation of poultry litter in thermophilic anaerobic digestion
AU - Rivera-Salvador, Víctor
AU - López-Cruz, Irineo L.
AU - Espinosa-Solares, Teodoro
AU - Aranda-Barradas, Juan S.
AU - Huber, David H.
AU - Sharma, Deepak
AU - Toledo, J. Ulises
N1 - Funding Information:
The authors wish to acknowledge the financial support from West Virginia State University (USA) , USDA Grant 2010-02276 (USA), Gus R. Douglass Institute’s Agricultural and Environmental Research Station (USA) and Consejo Nacional de Ciencia y Tecnología (México) . Furthermore express their gratitude to Dr. Christian Rosen and to Dr. Ulf Jeppsson for providing the initial Matlab implementation of ADM1.
PY - 2014/9
Y1 - 2014/9
N2 - A molecular analysis found that poultry litter anaerobic digestion was dominated by hydrogenotrophic methanogens which suggests that bacterial acetate oxidation is the primary pathway in the thermophilic digestion of poultry litter. IWA Anaerobic Digestion Model No. 1 (ADM1) was modified to include the bacterial acetate oxidation process in the thermophilic anaerobic digestion (TAD). Two methods for ADM1 parameter estimation were applied: manual calibration with non-linear least squares (MC-NLLS) and an automatic calibration using differential evolution algorithms (DEA). In terms of kinetic parameters for acetate oxidizing bacteria, estimation by MC-NLLS and DEA were, respectively, km 1.12 and 3.25±0.56kgCODkgCOD-1d-1, KS 0.20 and 0.29±0.018kgCODm-3 and Yac-st 0.14 and 0.10±0.016kgCODkgCOD-1. Experimental and predicted volatile fatty acids and biogas composition were in good agreement. Values of BIAS, MSE or INDEX demonstrate that both methods (MC-NLLS and DEA) increased ADM1 accuracy.
AB - A molecular analysis found that poultry litter anaerobic digestion was dominated by hydrogenotrophic methanogens which suggests that bacterial acetate oxidation is the primary pathway in the thermophilic digestion of poultry litter. IWA Anaerobic Digestion Model No. 1 (ADM1) was modified to include the bacterial acetate oxidation process in the thermophilic anaerobic digestion (TAD). Two methods for ADM1 parameter estimation were applied: manual calibration with non-linear least squares (MC-NLLS) and an automatic calibration using differential evolution algorithms (DEA). In terms of kinetic parameters for acetate oxidizing bacteria, estimation by MC-NLLS and DEA were, respectively, km 1.12 and 3.25±0.56kgCODkgCOD-1d-1, KS 0.20 and 0.29±0.018kgCODm-3 and Yac-st 0.14 and 0.10±0.016kgCODkgCOD-1. Experimental and predicted volatile fatty acids and biogas composition were in good agreement. Values of BIAS, MSE or INDEX demonstrate that both methods (MC-NLLS and DEA) increased ADM1 accuracy.
KW - Anaerobic digestion model
KW - Differential evolution algorithms
KW - Kinetic parameters
KW - Non-linear least squares
KW - Parameter estimation
UR - http://www.scopus.com/inward/record.url?scp=84903903775&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2014.06.008
DO - 10.1016/j.biortech.2014.06.008
M3 - Artículo
SN - 0960-8524
VL - 167
SP - 495
EP - 502
JO - Bioresource Technology
JF - Bioresource Technology
ER -