Terlouw, Ruben (2022) Generation of biogas by the anaerobic digestion of food waste. Master's Thesis / Essay, Chemical Engineering.
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Abstract
This study aimed at the investigation of food waste (FW) conversion to biogas by anaerobic digestion (AD) and biogas that should be converted to an energy source. The main goal of this project is to obtain the most efficient energy conversion technology for optimal use of FW converted by anaerobic digestion to biogas. This is pursued by doing laboratory experiments on the AD of FW with the addition of trace elements (TEs) and the theoretical upscaling of two pilot plant reactors available at the ENTEG-building in Groningen. A biogas conversion to different energy sources like heat and energy, green gas and proteins with the addition of economic analysis are added to complete the research. The most important results from laboratory experiments are that the addition of FW with an organic loading rate (OLR) of 5 g VS/L/day and a hydraulic retention time (HRT) of 24 days in combination with TEs give promising results. However, microbial adaption seems to impact the AD of FW and acidification occurs at an early stage. A literature review in combination with experiments and the above-mentioned process settings results in a volumetric biogas production (VBP) of 3.75 m3 biogas/m3/day with a methane fraction of 58%. The output of the AD of FW in combination with the upgrading of biogas to green gas will give a good working process with an approximate profit of €6500 per year.
| Item Type: | Thesis (Master's Thesis / Essay) |
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| Supervisor name: | Euverink, G.J.W. and Sleutels, T.H.J.A. and Purushothaman Vellayani, A. |
| Degree programme: | Chemical Engineering |
| Thesis type: | Master's Thesis / Essay |
| Language: | English |
| Date Deposited: | 01 Nov 2022 12:35 |
| Last Modified: | 01 Nov 2022 12:35 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/28908 |
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