Design and evaluation of a gas, temperature profiling and data acquisition system to monitor the performance of a batch fixed dome biogas digester.

Autor: Obileke K; Department of Physics, Renewable Energy Research Group, University of Fort Hare, Alice, South Africa. KObileke@ufh.ac.za.; Fort Hare Institute of Technology, University of Fort Hare, Alice, South Africa. KObileke@ufh.ac.za., Meyer EL; Fort Hare Institute of Technology, University of Fort Hare, Alice, South Africa., Mamphweli S; Centres of Renewable and Sustainable Energy Studies, Stellenbosch University, Stellenbosch, South Africa., Makaka G; Department of Physics, Renewable Energy Research Group, University of Fort Hare, Alice, South Africa.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Oct 23; Vol. 14 (1), pp. 24960. Date of Electronic Publication: 2024 Oct 23.
DOI: 10.1038/s41598-024-76080-y
Abstrakt: Recovering energy from biomass and treating organic waste can be done effectively through a biogas digester system. However, monitoring the performance and control of the system to produce biogas is possible through the online process. Therefore, this study developed a novel low-cost gas and temperature profiling system (GTPS) and data acquisition system (DAS) used in biogas digester. The GTPS is designed to monitor and record the amount of methane (CH 4 ) and carbon dioxide (CO 2 ), the main constituent of biogas, from 0 to 100% and to measure the slurry temperature in the digester using a K-type thermocouple. To test the developed monitoring system, the biogas yield (%) and temperature were monitored, and the result obtained agreed with that reported and obtained in the literature (50-70% and 30-40%) for CH 4 and CO 2 , respectively, followed by the desired mesophilic temperature condition for biogas production (20-35 °C). The study employed an RS-232/RS-485 converter for data communication and a low-cost thermocouple module (isolated analog input) that was installed in the data acquisition system. Interestingly, the application of the converter equipment has never been used in any study on monitoring a biogas digester.
(© 2024. The Author(s).)
Databáze: MEDLINE
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