Agricultural and Biosystems Engineering Publications

Document Type

Article

Publication Date

10-2012

Journal or Book Title

International Journal of Engineering and Technology

Volume

4

Issue

5

First Page

629

Last Page

631

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.

Access

Open

Copyright Owner

International Association of Computer Science and Information Technology Press

Language

en

File Format

application/pdf

Download

Share

COinS