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The effects of digestion temperature and temperature shock on the biogas yields from the mesophilic anaerobic digestion of swine manure.
Bioresour Technol. 2008 Jan; 99(1):1-6.BT

Abstract

In order to obtain basic design criteria for anaerobic digesters of swine manure, the effects of different digesting temperatures, temperature shocks and feed loads, on the biogas yields and methane content were evaluated. The digester temperatures were set at 25, 30 and 35 degrees C, with four feed loads of 5%, 10%, 20% and 40% (feed volume/digester volume). At a temperature of 30 degrees C, the methane yield was reduced by only 3% compared to 35 degrees C, while a 17.4% reduction was observed when the digestion was performed at 25 degrees C. Ultimate methane yields of 327, 389 and 403 mL CH(4)/g VS(added) were obtained at 25, 30 and 35 degrees C, respectively; with moderate feed loads from 5% to 20% (V/V). From the elemental analysis of swine manure, the theoretical biogas and methane yields at standard temperature and pressure were 1.12L biogas/g VS(destroyed) and 0.724 L CH(4)/g VS(destroyed), respectively. Also, the methane content increased with increasing digestion temperatures, but only to a small degree. Temperature shocks from 35 to 30 degrees C and again from 30 to 32 degrees C led to a decrease in the biogas production rate, but it rapidly resumed the value of the control reactor. In addition, no lasting damage was observed for the digestion performance, once it had recovered.

Authors+Show Affiliations

Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-dong, Buk-gu, Gwangju, South Korea.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17306978

Citation

Chae, K J., et al. "The Effects of Digestion Temperature and Temperature Shock On the Biogas Yields From the Mesophilic Anaerobic Digestion of Swine Manure." Bioresource Technology, vol. 99, no. 1, 2008, pp. 1-6.
Chae KJ, Jang A, Yim SK, et al. The effects of digestion temperature and temperature shock on the biogas yields from the mesophilic anaerobic digestion of swine manure. Bioresour Technol. 2008;99(1):1-6.
Chae, K. J., Jang, A., Yim, S. K., & Kim, I. S. (2008). The effects of digestion temperature and temperature shock on the biogas yields from the mesophilic anaerobic digestion of swine manure. Bioresource Technology, 99(1), 1-6.
Chae KJ, et al. The Effects of Digestion Temperature and Temperature Shock On the Biogas Yields From the Mesophilic Anaerobic Digestion of Swine Manure. Bioresour Technol. 2008;99(1):1-6. PubMed PMID: 17306978.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effects of digestion temperature and temperature shock on the biogas yields from the mesophilic anaerobic digestion of swine manure. AU - Chae,K J, AU - Jang,Am, AU - Yim,S K, AU - Kim,In S, Y1 - 2007/02/16/ PY - 2004/07/05/received PY - 2006/09/14/revised PY - 2006/11/25/accepted PY - 2007/2/20/pubmed PY - 2007/12/8/medline PY - 2007/2/20/entrez SP - 1 EP - 6 JF - Bioresource technology JO - Bioresour Technol VL - 99 IS - 1 N2 - In order to obtain basic design criteria for anaerobic digesters of swine manure, the effects of different digesting temperatures, temperature shocks and feed loads, on the biogas yields and methane content were evaluated. The digester temperatures were set at 25, 30 and 35 degrees C, with four feed loads of 5%, 10%, 20% and 40% (feed volume/digester volume). At a temperature of 30 degrees C, the methane yield was reduced by only 3% compared to 35 degrees C, while a 17.4% reduction was observed when the digestion was performed at 25 degrees C. Ultimate methane yields of 327, 389 and 403 mL CH(4)/g VS(added) were obtained at 25, 30 and 35 degrees C, respectively; with moderate feed loads from 5% to 20% (V/V). From the elemental analysis of swine manure, the theoretical biogas and methane yields at standard temperature and pressure were 1.12L biogas/g VS(destroyed) and 0.724 L CH(4)/g VS(destroyed), respectively. Also, the methane content increased with increasing digestion temperatures, but only to a small degree. Temperature shocks from 35 to 30 degrees C and again from 30 to 32 degrees C led to a decrease in the biogas production rate, but it rapidly resumed the value of the control reactor. In addition, no lasting damage was observed for the digestion performance, once it had recovered. SN - 0960-8524 UR - https://www.unboundmedicine.com/medline/citation/17306978/The_effects_of_digestion_temperature_and_temperature_shock_on_the_biogas_yields_from_the_mesophilic_anaerobic_digestion_of_swine_manure_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(07)00003-X DB - PRIME DP - Unbound Medicine ER -