Formation process and properties of hydrogen-producing granular sludge in UASB reactor

Authors

  • Lili Yin College of Engineering, Northeast Agricultural University, Harbin 150030, China
  • Shuang Liu College of Engineering, Northeast Agricultural University, Harbin 150030, China
  • Mengyi Wang College of Engineering, Northeast Agricultural University, Harbin 150030, China
  • Wencong Ju College of Engineering, Northeast Agricultural University, Harbin 150030, China
  • Donghui Wei College of Engineering, Northeast Agricultural University, Harbin 150030, China
  • Wenzhe Li College of Engineering, Northeast Agricultural University, Harbin 150030, China

DOI:

https://doi.org/10.25165/ijabe.v11i5.4255

Keywords:

anaerobic fermentation, UASB reactor, granular sludge, hydrogen

Abstract

The granular sludge of microbial fermentation systems includes various biomass-degrading enzymes and different microflora, which have significant impacts on the degradation of biomass and the stability of the system. An up-flow anaerobic sludge blanket (UASB) reactor was used to grow hydrogen-producing granular sludge. The results showed that the formation of the granular sludge underwent four stages, i.e., flocculation of the sludge, formation of the flocculent sludge, swelling of the flocculent sludge, and formation of the granular sludge. The formed granular sludge mostly had regular spherical and ellipsoidal shapes with a fractal dimension of 2.08±0.4; the settling velocities were 0.84 cm/s to 1.96 cm/s in water, the porosity was 0.67-0.95.The shear sensitivity (Kss) of the granular sludge was 0.1152. The granular sludge had a culture cycle of approximately 70 d and a hydrogen yield of 1.09 mol H2/mol glucose. Keywords: Anaerobic fermentation, UASB reactor, granular sludge, hydrogen DOI: 10.25165/j.ijabe.20181105.4255 Citation: Yin L L, Liu S, Wang M Y, Ju W C, Wei D H, Li W Z. Formation process and properties of hydrogen-producing granular sludge in UASB reactor. Int J Agric & Biol Eng, 2018; 11(5): 224–229.

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Published

2018-09-29

How to Cite

Yin, L., Liu, S., Wang, M., Ju, W., Wei, D., & Li, W. (2018). Formation process and properties of hydrogen-producing granular sludge in UASB reactor. International Journal of Agricultural and Biological Engineering, 11(5), 224–229. https://doi.org/10.25165/ijabe.v11i5.4255

Issue

Vol. 11 No. 5 (2018): IJABE

Section

Renewable Energy and Material Systems

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