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Journal of Biosystems Engineering

, Volume 23, Issue 1, pp 37–40 | Cite as

Evaluation of Biogas Production Performance During the Anaerobic Digestion of Lipids with Four or More Double Bonds

  • Min-Jee Kim
  • Sang-Hun KimEmail author
Review Article
  • 5 Downloads

Abstract

Purpose

The purpose of this study was to investigate the influence of the feed to microorganism ratio (F/M ratio) on the biogas production during the high-efficiency anaerobic digestion of lipids, where 50% of lipids contained four or more double bonds.

Methods

Biochemical methane potential tests were performed at five different F/M ratios, 0.2, 0.4, 0.6, 0.8, and 1.0, under mesophilic conditions. The biogas production patterns, lag-phase, total volatile fatty acids to volatile solid ratio (VFA/VS ratio), and time required for 90% biogas production (T90) were used to evaluate biogas production based on the biochemical methane potential tests.

Results

Biogas production started after 4 days of digestion in all the digesters. The biogas production pattern at an F/M ratio of 1.0 was observed to be different to that previously reported. The methane content was in the stabilized range of more than 50% at all F/M ratios. The T90 was reduced at F/M ratios lower than 0.6.

Conclusions

The lag-phase of anaerobic digestion of lipid with four or more double bonds could be reduced by using an F/M ratio lower than 0.6 and an initial VFA/VS ratio lower than 11%.

Keywords

Anaerobic digestion Biogas production Long chain fatty acid BMP test Lag-phase 

Notes

Funding Information

This study was supported by 2017 Research Grant from Kangwon National University (520170195) and partially supported by BK 21 plus (No. 31Z20130013003) and NRF-2017R1A2B4010015.

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interests.

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Copyright information

© The Korean Society for Agricultural Machinery 2019

Authors and Affiliations

  1. 1.Department of Biosystems Engineering, College of Agriculture and Life SciencesKangwon National UniversityChuncheonRepublic of Korea

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