E3S Web of Conf.
Volume 405, 20232023 International Conference on Sustainable Technologies in Civil and Environmental Engineering (ICSTCE 2023)
|Number of page(s)||12|
|Section||Renewable Energy & Electrical Technology|
|Published online||26 July 2023|
Study of Different Parameters of Mixing on Biogas Production from Food Waste
Department of Chemical Engineering, Vishwakarma Institute of Technology, Pune – 411037, India
* Corresponding author: firstname.lastname@example.org
Food waste generation is an increasing issue, and the disposal of it is controversial. It raises food prices, and the municipal solid waste contains 8.4% food waste by weight. The current study generates a pilot plant for converting food waste to biogas production as an energy source for tremendous paths. The present work deals with the study of the effect of mixing on biogas production from food waste in the pilot-scale digesters. A propeller agitator was employed for mixing in an anaerobic digester. Multiple experimental trials were addressed to optimize the parameters participating in the process of biogas production in semi-continuous operation at mesophilic conditions. Different mixing duration and mixing frequency was studied at the mixing speed of 5 rpm and a comparison was carried out with reference to the digester without a mixing facility. The highest biogas production of 0.12 m3/(kg dry mass) was observed at the mixing time of 5 min compared with the duration of 10 min and 15 min and without mixing conditions. Mixing once in a day obtained biogas production in the range 0.048 to 0.071 m3/(kg dry mass) while mixing at two times in a day obtained biogas production in the range of 0.019 to 0.0357 m3/(kg dry mass). Hence, mixing frequency once a day provided almost double biogas production. Effect of temperature and pH was also studied with different mixing duration and found that mixing duration of 5 min was the best for biogas production from food waste. Minimum mixing of 5 min is required once a day in semi-continuous digestion for stable biogas production. The study concluded to a point that mixing is important for stable processes and maximum biogas production.
Key words: Biogas production / mixing effect / mesophilic digestion / pilot scale / food waste
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.