Continuous biogas production from sugarcane as sole substrate

  • 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 1.68gᵥₛ/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.

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Metadaten
Author:Svea Paulsen, Kevin HoffstadtORCiD, Simone KrafftORCiD, A. Leite, J. Zang, W. Fonseca-Zang, Isabel KuperjansORCiD
DOI:https://doi.org/10.1016/j.egyr.2019.08.035
Parent Title (English):Energy Reports
Publisher:Elsevier
Document Type:Conference Proceeding
Language:English
Year of Completion:2020
Date of the Publication (Server):2020/04/14
Volume:6
Issue:Supplement 1
First Page:153
Last Page:158
Note:
6th International Conference on Energy and Environment Research, ICEER 2019, 22–25 July, University of Aveiro, Portugal
Link:https://doi.org/10.1016/j.egyr.2019.08.035
Zugriffsart:weltweit
Institutes:FH Aachen / Fachbereich Energietechnik
FH Aachen / Nowum-Energy
open_access (DINI-Set):open_access
collections:Verlag / Elsevier
Open Access / Gold
Licence (German): Creative Commons - Namensnennung-Nicht kommerziell-Keine Bearbeitung