Continuous biogas production from sugarcane as sole substrate
| Autor: | J. Zang, Athaydes Francisco Leite, K. Hoffstadt, Warde Antonieta da Fonseca-Zang, S. Paulsen, S. Krafft, I. Kuperjans |
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| Rok vydání: | 2020 |
| Předmět: |
Space-time load
020209 energy Industrial fermentation Continuous tests 02 engineering and technology chemistry.chemical_compound 020401 chemical engineering Biogas Anaerobic digestion ddc:330 0202 electrical engineering electronic engineering information engineering Ammonium Dry matter 0204 chemical engineering chemistry.chemical_classification Substrate (chemistry) Sugarcane Biogas production Pulp and paper industry General Energy chemistry Volume (thermodynamics) lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:TK1-9971 Organic acid |
| Zdroj: | Energy Reports, Vol 6, Iss, Pp 153-158 (2020) |
| ISSN: | 2352-4847 |
| DOI: | 10.1016/j.egyr.2019.08.035 |
| Popis: | A German–Brazilian research project investigates sugarcane as an energy plant in anaerobic digestion for biogas production. The aim of the project is a continuous, efficient, and stable biogas process with sugarcane as the substrate. Tests are carried out in a fermenter with a volume of 10 l.In order to optimize the space–time load to achieve a stable process, a continuous process in laboratory scale has been devised. The daily feed in quantity and the harvest time of the substrate sugarcane has been varied. Analyses of the digester content were conducted twice per week to monitor the process: The ratio of inorganic carbon content to volatile organic acid content (VFA/TAC), the concentration of short-chain fatty acids, the organic dry matter, the pH value, and the total nitrogen, phosphate, and ammonium concentrations were monitored. In addition, the gas quality (the percentages of CO2, CH4, and H2) and the quantity of the produced gas were analyzed.The investigations have exhibited feasible and economical production of biogas in a continuous process with energy cane as substrate. With a daily feeding rate of 1.68 gVS/l*d the average specific gas formation rate was 0.5 m3/kgVS. The long-term study demonstrates a surprisingly fast metabolism of short-chain fatty acids. This indicates a stable and less susceptible process compared to other substrates. Keywords: Anaerobic digestion, Biogas production, Continuous tests, Space–time load, Sugarcane |
| Databáze: | OpenAIRE |
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