A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Factors influencing solid-state anaerobic digestion
AbstractTwo 80 m3 solid-state batch reactors constructed mainly from flexible, less expensive materials were investigated from the viewpoint of gas production and process stability for semi-continuous operation. A mixture of agricultural wastes (25% beef cattle manure, 75% corn stalks with husks and leaves) with high solids concentration (approx. 27%) served as feed for the digestion. The heat to maintain the adequate microbial activity was derived from the aerobic stage. The stability of this phase for continuous biogas production was ensured by active aeration. The gas production rates were dependent on the fermentation insulation, and showed a 30% increase when the winter type insulation was used. The volumetric gas productivities of the digester with more efficient insulation varied between 2·5 and 0·7 m3 m−3 day−1. During the required 30 days of batch fermentation, the reactor temperature slowly decreased from 55°C to under 35°C. The storage of already mixed raw materials for a 3 week period had an adverse effect on digester performance, and decreased the total gas production by approximately 20%.
Factors influencing solid-state anaerobic digestion
AbstractTwo 80 m3 solid-state batch reactors constructed mainly from flexible, less expensive materials were investigated from the viewpoint of gas production and process stability for semi-continuous operation. A mixture of agricultural wastes (25% beef cattle manure, 75% corn stalks with husks and leaves) with high solids concentration (approx. 27%) served as feed for the digestion. The heat to maintain the adequate microbial activity was derived from the aerobic stage. The stability of this phase for continuous biogas production was ensured by active aeration. The gas production rates were dependent on the fermentation insulation, and showed a 30% increase when the winter type insulation was used. The volumetric gas productivities of the digester with more efficient insulation varied between 2·5 and 0·7 m3 m−3 day−1. During the required 30 days of batch fermentation, the reactor temperature slowly decreased from 55°C to under 35°C. The storage of already mixed raw materials for a 3 week period had an adverse effect on digester performance, and decreased the total gas production by approximately 20%.
Factors influencing solid-state anaerobic digestion
Molnar, L. (author) / Bartha, I. (author)
Biological Wastes ; 28 ; 15-24
1988-08-02
10 pages
Article (Journal)
Electronic Resource
English
| Wiley | 2019
Impacts of Anaerobic Co-Digestion on Different Influencing Parameters: A Critical Review
| DOAJ | 2022
| American Institute of Physics | 2015