Title:
Mono-Fermentation of Chicken Manure: Competing with Ammonia Inhibition and a High Content of Inorganic Solids
Author(s):
Schäfer, F., Müller, L., Reiter, R., Himmelstoss, A., Pröter, J.
Document(s):
Paper
Slide presentation
Abstract:
This study investigates the biogas production from chicken manure under different process temperatures, varying from psychrophilic to mesophilic conditions. While at lower total ammonia nitrogen (TAN) concentrations the mesophilic reactor showed a higher specific methane production rate (SMP) compared to lower process temperatures, the SMP decreased by increasing the organic loading rate and therewith the TAN concentration. Under high TAN concentrations psychrophilic and lower mesophilic reactors showed a stable biogas production. A further approach dealt with the generation of a stable hydrolysis of chicken manure, which could be a solution for separation of inorganic solids in preparation of the methanogenesis stage. Without an additional supplementation of phosphoric acid it was not possible to achieve pH values typical for hydrolysis. Recirculation of digestate, however, led to accumulation of volatile fatty acids, but didn’t result in acidification.
Keywords:
ammonia, anaerobic digestion, biogas, manure, hydrolysis
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Anaerobic digestion for biogas production
Event:
25th European Biomass Conference and Exhibition
Session:
2DO.1.3
Pages:
516 - 520
ISBN:
978-88-89407-17-2
Paper DOI:
10.5071/25thEUBCE2017-2DO.1.3
Price:
FREE
