10.5071/20THEUBCE2012-2DV.3.12
Luste, S.
S.
Luste
Soininen, H.
H.
Soininen
Anaerobic Co-Digestion of Chicken Manure - Effect of Material Relations in Feed Mixture and Hygienisation on Biogas Production
ETA-Florence Renewable Energies
2012
Conference paper
Biomass
2012
en
978-88-89407-54-7
5 Pages
application/pdf
Proceedings of the 20th European Biomass Conference and Exhibition, 18-22 June 2012, pp. 1429-1433
Anaerobic digestion of chicken manure (CM) is challenging due to the high nitrogen content of the material. Co¬digestion of CM with cattle slurry (CS) and vegetable wastes (VW) from a food industry dilutes the feed material and enhances the buffering capasity towards the pH increase. Anaerobic co¬digestion of CM, CS and VW from a food industry was studied in the wet weight (W.W.) relations of A) 10:70:20 (hygienised mixture A*; 70 °C/1 hour), B) 13:76:11, C) 15:82:03 and D) 25:50:25 at 33 ±2 °C. The objective of the present study was the characterisation and optimisation of anaerobic co¬digestion process treating CM with the ultimate aim to enhance the methane (CH4) production. Highest content of CM in the feed mixture (25%) was tolerated, when it was buffered with the adequate amounth of VW. The highest CH4 production (300 m3 of CH4 /t volatile solids; VS) was achieved with the mixture D. The synergistic effect of co-digestion was achieved, and process produced more CH4 than calculated theoretically. Hygienisation enhanced the biological CH4 potential (BMP) by 43% from A*, when compared to the untreated mixture A.
Proceedings of the 20th European Biomass Conference and Exhibition, 18-22 June 2012, Milan, Italy, pp. 1429-1433