Enhanced anaerobic co-digestion of fat, oil, and grease by calcium addition: Boost of biomethane production and microbial community shift

El Sayed Salama, Byong Hun Jeon, Mayur B. Kurade, Swapnil M. Patil, Muhammad Usman, Xiangkai Li, Hankwon Lim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This work focused on the application of calcium (0.1–1% w/v) to overcome the inhibition caused by the high loadings (2% v/v) of fat, oil, and grease (FOG) in the context of biomethane production, organic removal, and microbial community shift. Addition of 0.5% calcium showed maximum biomethane production (6-fold increase); biomethane production decreased following the addition of calcium (>0.5%). The highest organic removal rates were 83 and 89% upon the addition of 0.3 and 0.5% calcium, respectively. Addition of calcium facilitated the growth of bacteria of phylum Firmicutes from the Clostridium, Syntrophomonas, and Sedimentibacter genera. The population of members from the genus Methanosaeta increased after the addition of 0.5% calcium, which is one of the factors responsible for high biomethane production. This study demonstrated that addition of calcium is an attractive strategy to avoid the inhibition of the growth of anaerobic microflora due to the presence of high FOG concentrations.

Original languageEnglish
Article number122353
JournalBioresource Technology
Volume296
DOIs
StatePublished - 2020 Jan

Fingerprint

Lubricating greases
Oils and fats
fat
digestion
microbial community
Calcium
calcium
oil
Clostridium
Bacteria
fold
bacterium

Keywords

  • Anaerobic co-digestion
  • Biomethane
  • Calcium pretreatment
  • Fat, oil, and grease
  • Microbial community

Cite this

Salama, El Sayed ; Jeon, Byong Hun ; Kurade, Mayur B. ; Patil, Swapnil M. ; Usman, Muhammad ; Li, Xiangkai ; Lim, Hankwon. / Enhanced anaerobic co-digestion of fat, oil, and grease by calcium addition : Boost of biomethane production and microbial community shift. In: Bioresource Technology. 2020 ; Vol. 296.
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Enhanced anaerobic co-digestion of fat, oil, and grease by calcium addition : Boost of biomethane production and microbial community shift. / Salama, El Sayed; Jeon, Byong Hun; Kurade, Mayur B.; Patil, Swapnil M.; Usman, Muhammad; Li, Xiangkai; Lim, Hankwon.

In: Bioresource Technology, Vol. 296, 122353, 01.2020.

Research output: Contribution to journalArticle

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