Modeliranje procesov anaerobne in aerobne razgradnje z modeloma ADM1 in ASM1

magistrsko delo

Leon Lang (Author), Lidija Čuček (Mentor), Zdravko Kravanja (Co-mentor), Tomislav Pukšec (Co-mentor)

Abstract

Anaerobna razgradnja je kompleksen večstopenjski proces, ki ga uporabljamo za razgradnjo organskih komponent v metan in ogljikov dioksid v odsotnosti kisika, hkrati pa proces lahko uporabimo za proizvodnjo obnovljive energije. Gre torej za enega izmed načinov, s katerim bi lahko omejili uporabo fosilnih goriv in tako prispevali k trajnostnemu razvoju. Aerobna razgradnja po drugi strani poteka v prisotnosti kisika, kjer mikroorganizmi v oksidacijskem procesu pretvorijo organske snovi v ogljikov dioksid, vodo, nitrate in sulfate. Proces aerobne razgradnje najpogosteje najdemo v čistilnih napravah za čiščenje odpadnih vod. V namene boljšega razumevanja ter nadaljnjega raziskovanja procesov anaerobne in aerobne razgradnje so raziskovalci razvili splošna modela anaerobne razgradnje ADM1 (Anaerobic Digestion Model No. 1) in aktivnega blata ASM1 (Activated Sludge Model No. 1). V magistrskem delu smo izvedli simulacije teh dveh procesov z osnovnima modeloma ADM1 in ASM1 ter nato še z modificiranim modelom ADM1. Magistrsko delo je tako razdeljeno na tri dele. V prvem delu smo izvedli simulacijo osnovnega modela ADM1, v drugem delu simulacijo modela ASM1 in v tretjem delu simulacijo modificiranega modela ADM1. Vse simulacije so bile izvedene v programu MATLAB. Na podlagi izvedenih simulacij smo naredili primerjavo z rezultati simulacij iz literature in na koncu še primerjavo z eksperimentalnimi rezultati iz literature. Ugotovili smo, da modela ADM1 in ASM1 dobro opišeta kinetiko procesov anaerobne in aerobne razgradnje. Pri rezultatih simulacij in eksperimentalnih rezultatov je prišlo do nekaterih odstopanj zaradi kompleksne narave biološko aktivnih sistemov in uporabe modelov z že vnaprej definiranimi procesi, s katerimi želimo oceniti kinetične parametre, ki so specifični za naš sistem. Kljub temu ti modeli prestavljajo dobro izhodišče za nadaljnje laboratorijske raziskave.

Keywords

anaerobna razgradnja;aerobna razgradnja;ADM1;ASM1;matematično modeliranje;MATLAB;magistrske naloge;

Data

Language:	Slovenian
Year of publishing:	2019
Typology:	2.09 - Master's Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[L. Lang]
UDC:	66.011:66.098(043.2)
COBISS:	22336022
Views:	1472
Downloads:	114
Average score:	0 (0 votes)
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Other data

Secondary language:	English
Secondary title:	Modeling of anaerobic and aerobic digestion processes using ADM1 and ASM1 model
Secondary abstract:	Anaerobic digestion is a complex multistage process used for degradation of organic compounds into methane and carbon dioxide in the absence of oxygen; at the same time, the process can also be used to produce renewable energy. It is therefore among the possibilities, by which it is possible to limit the use of fossil fuels and thus contribute to sustainability. Aerobic degradation, on the other hand, takes place in the presence of oxygen, where microorganisms in the oxidation process convert organic matter into carbon dioxide, water, nitrates and sulphates. The aerobic degradation process is most often found in wastewater treatment plants. For the purposes of better understanding and further research of anaerobic and aerobic degradation, researchers have developed general models of anaerobic digestion ADM1 (Anaerobic Digestion Model No. 1) and activated sludge ASM1 (Activated Sludge Model No. 1). During research for this master’s thesis, simulations of these two processes with the basic ADM1 and ASM1 models, as well as with the modified ADM1 model have been performed. The master's thesis is divided into three parts. In the first part, the basic ADM1 model is simulated; in the second part, the ASM1 model is simulated, and in the third part the modified ADM1 model is simulated. All the simulations were performed in MATLAB software. Based on the completed simulations, a comparison of results from the simulations with the literature was performed, and finally a comparison with the experimental results was made. It was found that ADM1 and ASM1 models function well in describing the kinetics of anaerobic and aerobic degradation processes. Given the complex nature of biologically active systems, some deviations between simulation results and experimental research were obtained. After all, models with already predefined processes were used, and the values of kinetic parameters were estimated, which are specific to our systems. Nevertheless, the models could be a good starting point for further laboratory research.
Secondary keywords:	anaerobic digestion;aerobic digestion;ADM1;ASM1;mathematical modelling;MATLAB;
URN:	URN:SI:UM:
Type (COBISS):	Master's thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	XI, 86 str.
ID:	11074930