Effects of supplement additives on anaerobic biogas production

Minsoo Kim, Dan Li, Okkyoung Choi, Byoung-In Sang, Pen Chi Chiang, Hyunook Kim

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Anaerobic digestion (AD) converts biomass to biogas. However, its performance is often affected by the nutrient condition of AD substrate. In this study, a few substrate supplements were selected to promote the biogas production; MgO, FeCl3, and cellulase were selected based on the result from elemental analyses of the biomass. The potential impact of the additives on AD process was evaluated by performing a series of biochemical methane potential (BMP) tests. BMP reactors with the substrate with one of the selected additives (i.e., MgO of 380 mg Mg L−1, FeCl3 of 88 mg Fe L−1 or cellulase of 25 mg L−1) exhibited higher microbial activity; 5–15% more biogas production was observed, compared to the blank. Microbial community analysis showed that different additives resulted in proliferation of different microbial species. Therefore, it was decided to add the mixture of the three additives to the biomass. Addition of the mixed additive resulted in 22% more gas production.

Original languageEnglish
Pages (from-to)2678-2685
Number of pages8
JournalKorean Journal of Chemical Engineering
Volume34
Issue number10
DOIs
StatePublished - 2017 Oct 1

Fingerprint

Biofuels
Biogas
Anaerobic digestion
Biomass
Cellulase
Methane
Substrates
Nutrients
Gases

Keywords

  • Additives
  • Anaerobic Digestion
  • Biochemical Methane Potential (BMP) Test
  • Biogas Production
  • Microbial Activity

Cite this

Kim, Minsoo ; Li, Dan ; Choi, Okkyoung ; Sang, Byoung-In ; Chiang, Pen Chi ; Kim, Hyunook. / Effects of supplement additives on anaerobic biogas production. In: Korean Journal of Chemical Engineering. 2017 ; Vol. 34, No. 10. pp. 2678-2685.
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Effects of supplement additives on anaerobic biogas production. / Kim, Minsoo; Li, Dan; Choi, Okkyoung; Sang, Byoung-In; Chiang, Pen Chi; Kim, Hyunook.

In: Korean Journal of Chemical Engineering, Vol. 34, No. 10, 01.10.2017, p. 2678-2685.

Research output: Contribution to journalArticle

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