Granulation in UASB reactors

J. Dolfing

doi:10.2166/wst.1986.0160

Granulation in UASB reactors

J. Dolfing^*

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

51 Citations (Scopus)

Abstract

The state of knowledge on the microbiological aspects of granular methanogenic sludge in upflow anaerobic sludge blanket (UASB) reactors is reviewed. Granular methanogenic sludge has been observed in a variety of upflow reactors, which is in agreement with the hypothesis that these systems select for well settling sludges. In methanogenic UASB reactors various types of well settling sludges have been observed. Microscopic and kinetic evidence suggests that acetoclastic Methanothrix-like organisms play an important role in determining which type of sludge will develop under methanogenic condition. The mechanism of granulation still remains obscure. Extracellular material undoubtedly plays a major role as a matrix which keeps the cells together. Scanning electron microscopic evidence for the presence of extracellular material is available, but transmission electron microscopy has failed to validate the hypothesis that exopolysaccharides are the dominant components in this matrix

Original language	English
Title of host publication	Water Science and Technology
Pages	15-25
Number of pages	11
Volume	18
Edition	12
DOIs	https://doi.org/10.2166/wst.1986.0160
Publication status	Published - 1986
Externally published	Yes
Event	Anaerob Treat in Trop Countries, Proc of an IAWPRC Int Semin - Sao Paolo, Braz Duration: 25 Aug 1986 → 29 Aug 1986

Conference

Conference	Anaerob Treat in Trop Countries, Proc of an IAWPRC Int Semin
City	Sao Paolo, Braz
Period	25/08/86 → 29/08/86

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10.2166/wst.1986.0160

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title = "Granulation in UASB reactors",

abstract = "The state of knowledge on the microbiological aspects of granular methanogenic sludge in upflow anaerobic sludge blanket (UASB) reactors is reviewed. Granular methanogenic sludge has been observed in a variety of upflow reactors, which is in agreement with the hypothesis that these systems select for well settling sludges. In methanogenic UASB reactors various types of well settling sludges have been observed. Microscopic and kinetic evidence suggests that acetoclastic Methanothrix-like organisms play an important role in determining which type of sludge will develop under methanogenic condition. The mechanism of granulation still remains obscure. Extracellular material undoubtedly plays a major role as a matrix which keeps the cells together. Scanning electron microscopic evidence for the presence of extracellular material is available, but transmission electron microscopy has failed to validate the hypothesis that exopolysaccharides are the dominant components in this matrix",

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year = "1986",

doi = "10.2166/wst.1986.0160",

language = "English",

isbn = "9780080355832",

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edition = "12",

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AU - Dolfing, J.

PY - 1986

Y1 - 1986

N2 - The state of knowledge on the microbiological aspects of granular methanogenic sludge in upflow anaerobic sludge blanket (UASB) reactors is reviewed. Granular methanogenic sludge has been observed in a variety of upflow reactors, which is in agreement with the hypothesis that these systems select for well settling sludges. In methanogenic UASB reactors various types of well settling sludges have been observed. Microscopic and kinetic evidence suggests that acetoclastic Methanothrix-like organisms play an important role in determining which type of sludge will develop under methanogenic condition. The mechanism of granulation still remains obscure. Extracellular material undoubtedly plays a major role as a matrix which keeps the cells together. Scanning electron microscopic evidence for the presence of extracellular material is available, but transmission electron microscopy has failed to validate the hypothesis that exopolysaccharides are the dominant components in this matrix

AB - The state of knowledge on the microbiological aspects of granular methanogenic sludge in upflow anaerobic sludge blanket (UASB) reactors is reviewed. Granular methanogenic sludge has been observed in a variety of upflow reactors, which is in agreement with the hypothesis that these systems select for well settling sludges. In methanogenic UASB reactors various types of well settling sludges have been observed. Microscopic and kinetic evidence suggests that acetoclastic Methanothrix-like organisms play an important role in determining which type of sludge will develop under methanogenic condition. The mechanism of granulation still remains obscure. Extracellular material undoubtedly plays a major role as a matrix which keeps the cells together. Scanning electron microscopic evidence for the presence of extracellular material is available, but transmission electron microscopy has failed to validate the hypothesis that exopolysaccharides are the dominant components in this matrix

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DO - 10.2166/wst.1986.0160

M3 - Conference contribution

AN - SCOPUS:0022870769

SN - 9780080355832

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T2 - Anaerob Treat in Trop Countries, Proc of an IAWPRC Int Semin

Y2 - 25 August 1986 through 29 August 1986

ER -

Granulation in UASB reactors

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