Browsing by Author "Velichkova P."

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    DEVELOPMENT OF SIMPLIFIED MODELS FOR OPTIMIZATION OF BIOCHEMICAL METHANE POTENTIAL PROCEDURE
    (2022-01-01) Velichkova P.; Ivanov T.; Lalov I.
    Anaerobic digestion (AD) can be used to convert biomass materials into methane for energy recovery and achieve waste stabilization and environment stress reduction. The effect of substrate/inoculum ratio, temperature and trace elements on the biochemical methane potential (BMP) was evaluated through the calculation of performance parameters by using three simplified mathematical models. The Modified Gompertz equation, the Logistic equation and Reaction curve (Transference) models were all used with experimental data from the BMP determination. The substrate was vinasse with COD 216 g O2 L-1, obtained as by-product in wine distillation process. The lag time phase, maximum rate of biogas production and maximal potential biogas production was estimated in each experiment by application of mathematical models. The obtained results indicate that the use of models allow accurate determination of parameters in BMP determination. In case with vinasse the modified Gompertz model fits better than others.