The DOI matches its Crossref record; 9 of the 9 references it cites were found in a registry or an index.
The role of cellular polysaccharides in the formation and stability of aerobic granules
Abstract
AIMS: This paper attempts to investigate the role of cellular polysaccharides in the formation and stability of aerobic granules. METHODS AND RESULTS: Three column sequential aerobic sludge blanket reactors (R1, R2 and R3) were operated at a superficial air upflow velocity of 0.3 cm s(-1), 1.2 cm s(-1) and 2.4 cm s(-1), respectively. Aerobic granules appeared at cycle 42 in R2 and R3 with a mean size of 0.37 mm in R2 and 0.35 mm in R3, however, aerobic granulation was not observed in R1. After the formation of aerobic granules, the sludge volume index (SVI) decreased to 55 ml g(-1) in R2 and 46 ml g(-1) in R3. Aerobic granulation was concurrent with a sharp increase of cellular polysaccharides normalized to cellular proteins, which increased from 5.7 to 13.0 mg per mg proteins in R2, and 7.5-13.9 mg per mg protein in R3. The content of polysaccharides in aerobic granules was 2-3 times higher than that in the bioflocci cultivated in R1. The disappearance of aerobic granules in R2 was tightly coupled to a drop in cellular polysaccharides. After the reappearance of bioflocci in R2, the content of cellular polysaccharides were found to be restored to the level observed in R1. CONCLUSION: It appears that the production of cellular polysaccharides could be stimulated by hydrodynamic shear force and contributes to the formation and stability of aerobic granules. SIGNIFICANCE AND IMPACT OF THE STUDY: It is expected that this study would provide useful information for better understanding the mechanisms of aerobic granulation.
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Cites
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Aerobic granulation in a sequencing batch reactor
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The role of extracellular polysaccharides in biofilms
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Sheng, G.-P., Yu, H.-Q., & Li, X.-Y. (2010) · Biotechnology Advances · doi:10.1016/j.biotechadv.2010.08.001 · Cited by 3,113
The effects of extracellular polymeric substances on the formation and stability of biogranules
Liu, Y.-Q., Liu, Y., & Tay, J.-H. (2004) · Applied Microbiology and Biotechnology · doi:10.1007/s00253-004-1657-8 · Cited by 498
Self-citationMicrobial extracellular polymeric substances: central elements in heavy metal bioremediation
Pal, A., & Paul, A. K. (2008) · Indian Journal of Microbiology · doi:10.1007/s12088-008-0006-5 · Cited by 425
Metadata
- Authors
- Tay, J.-H., Liu, Q.-S., & Liu, Y.
- Venue
- Letters in Applied Microbiology
- Publisher
- Oxford University Press (OUP)
- Published
- 2001-09-16
- Volume
- 33
- Issue
- 3
- Pages
- 222-226
- ISSN
- 0266-8254 (ISSN-L)
- 1365-2673
- OpenAlex
- W2013482604
- Cited by
- 273
- References
- 9
- FWCI
- 4.10
- Type
- journal article
- Language
- en
- Open access
- closed
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- Tay, J.-H., Liu, Q.-S., & Liu, Y. (2001). The role of cellular polysaccharides in the formation and stability of aerobic granules. Letters in Applied Microbiology. https://doi.org/10.1046/j.1472-765x.2001.00986.x
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