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Article
Impacts of Temperatures on Biogas Production in Dairy Manure Anaerobic Digestion
International Journal of Engineering and Technology
  • Pramod K. Pandey, Iowa State University
  • Michelle L. Soupir, Iowa State University
Document Type
Article
Publication Date
10-1-2012
DOI
10.7763/IJET.2012.V4.448
Abstract

Batch anaerobic digestion of dairy manure was performed at low (25ºC), mesophilic (37ºC), and thermophilic (52.5ºC) temperatures to determine the influences of temperatures on biogas production. The experiment was runfor 76, 40 and 29 days at 25, 37, and 52.5ºC, respectively. The biogas production was measured daily at each temperature. To estimate the solid reductions, we measured total solids (TS) andvolatile solids (VS) over time. The biogas production at 52.5ºCand 37ºC were 49 and 17 times higher than that at 25ºC. Over incubation periods, the TS reduction at 25, 37, and 52.5ºC were5.6, 57, 34%, respectively. The VS reductions were 127, 58.4, 42.5%, respectively. At 25 and 37 ºC, pH was reduced, while at52.5 ºC pH was increased. The Oxidation Reduction Potential (ORP) values at 37 and 52.5ºC were negative over the incubation period. But at 25ºC, however, the ORP values were positive after Day 19. Findings from this study are useful for enhancing anaerobic digesters’ performance.

Comments

This article is from International Journal of Engineering and Technology 4 (2012): 629–631, doi:10.7763/IJET.2012.V4.448. Posted with permission.

Copyright Owner
International Association of Computer Science and Information Technology Press
Language
en
Date Available
2014-09-06
File Format
application/pdf
Citation Information
Pramod K. Pandey and Michelle L. Soupir. "Impacts of Temperatures on Biogas Production in Dairy Manure Anaerobic Digestion" International Journal of Engineering and Technology Vol. 4 Iss. 5 (2012) p. 629 - 631
Available at: http://works.bepress.com/michelle_soupir/20/