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Modeling and simulation of existing biogas plants with SIMBA#Biogas
Linköpings universitet, Institutionen för fysik, kemi och biologi, Teknisk biologi.
2017 (engelsk)Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
Abstract [en]

The main purpose of this project was an attempt to modulate and simulate two existing biogas plant, situated in Lidköping and Katrineholm, Sweden and evaluate how the process reacts to certain conditions regarding feeding, layout and substrate mixture. The main goal was to optimize the existing processes to better performance. Both the modeling and simulation were executed in SIMBA#Biogas with accordance to the real conditions at the plant in question. The simulation of each model was validated against data containing measurements of, CH4 yield, CH4 production, TS, VS, NH4-N concentration and N-total concentration. The data was obtained from each plant in accordance with scheduled follow ups. Both models were statistically validated for several predictions. Predictions of N-total and NH4-N concentration failed for some cases. Both plants were tested with new process lay outs, where promising results were obtained. The Lidköping model was provided with a post-hygienization step to handle ABPs. The Katrineholm model was provided with a dewatering unit, where 35% of the centrate was recirculated back to the system. Both setups was configured to yield the highest CH4 production. This study suggests that SIMBA#Biogas can be a tool for predictions and optimizations of the biogas process.

sted, utgiver, år, opplag, sider
2017. , s. 45
Emneord [en]
Biogas, SIMBA#Biogas, Anaerobic digestion
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-138638ISRN: LITH-IFM-A-EX—17/3393—SEOAI: oai:DiVA.org:liu-138638DiVA, id: diva2:1112474
Eksternt samarbeid
Gasum AB
Fag / kurs
Biotechnology
Veileder
Examiner
Tilgjengelig fra: 2017-06-22 Laget: 2017-06-20 Sist oppdatert: 2017-06-22bibliografisk kontrollert

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