Modeling and simulation of multi-stage continuous high cell density culture to disposer-based food waste treatment (HEROS) and VFA production for fuels and chemicals = Multi-Stage Continuous High Cell Density Culture 기술에 의한 분쇄기 이용 음식물쓰레기 처리 와 연료 및 화학품을 위한 VFA 생산에 대한 모델링 및 시뮬레이션 연구

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HEROS and VFA production system is modeled by modifying standard ASM1 and ADM1. The accuracy of modified model is demonstrated by dynamic simulation and comparing with experimental data. The improvement of current system by MSC-HCDC is tested by simulation. Type B HEROS reactor for 45 households is modeled as two aerobic packed bed and aerobic CSTR and its dynamic states are simulated to demonstrate its distinguished performance. Fully aerated model shows that final BOD ranges from zero to 90 mg/L. The air supply model is modified as oxygen inhibited model to represent more actual system. Oxygen inhibited model exhibits that final BOD ranges from 75 ~ 150 mg/L. When simulated with 50 % amplitude sine input, the final BOD varies from 25 ~ 160 mg/L. The result fits well with experimental data of actual effluent BOD data of HEROS. When $2n^{nd}$ reactor is extended, final BOD becomes 0 ~ 123 mg/L and thoroughly satisfy the effluent BOD regulation, 125.8 mg/L. When MSC-HCDC is applied to the extended model, final BOD slightly drops to 118 mg/L. In 45 households HEORS system, implementation of MSC-HCDC is difficult because it should treat high loading rate of BOD in relatively short HRT with oxygen inhibition. VFA production for biofuel is modeled with modified ADM1 standard model. Methane production is inhibited in the model. In singe stage continuous production, VFA concentration was 9.565 g/L and it is half of experimental data which is conducted with food waste. In single stage batch production, VFA concentration is 8.74 g/L and the result coincide with experimental data of untreated MSW/SS. Modified ADM1 model can be used to model and simulation for untreated MSW biomass. For future research, modified ADM1 model can be utilized to simulate effect of MSC-HCDC in series of reactors.
Advisors
Chang, Ho-Namresearcher장호남researcher
Description
한국과학기술원 : 생명화학공학과,
Publisher
한국과학기술원
Issue Date
2010
Identifier
419021/325007  / 020083553
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2010.2, [ ix, 76 p. ]

Keywords

VFA; HEROS; disposer-based food waste treatment; MSC-HCDC; 다단계 연속 세포고농도배양; 휘발성 유기산; 해로스; 분쇄기 이용 음식물처리

URI
http://hdl.handle.net/10203/29490
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=419021&flag=dissertation
Appears in Collection
CBE-Theses_Master(석사논문)
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