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Effects of directly soluble and fibrous rapidly acidifying chemical oxygen demand and reactor liquid surface tension on granulation and sludge-bed stability in upflow anaerobic sludge-blanket reactors

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Organization
Abstract
In recent years, it has become clear that the rapidly acidifying chemical oxygen demand (RACOD) content of the waste water and the surface tension of the reactor liquid contribute to the phenomenon of granular growth in upflow anaerobic sludge-blanket reactors (UASB). By adding 20% of directly soluble RACOD, in the form of a sucrose;starch mixture, on top of the original COD load and by adjusting the reactor liquid surface tension below 50 mN m(-1) with linear alkylbenzenesulphonate, granular growth and sludge-bed stability could be enhanced significantly within 40 days, Carrot pulp, a waste product having a high short-chain fatty acid precursor potential, was applied as an alternative fibrous RACOD source. Best results were obtained when adding the carrot pulp freshly to the laboratory-scale UASB reactor in an in-recycle liquefying chamber. This concept of adding carrot pulp waste product as a granular growth supplement by means of an in-recycle liquefying chamber therefore merits testing in practice.
Keywords
WASTE-WATER

Citation

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Chicago
Grootaerd, Hans, Bart Liessens, and Willy Verstraete. 1997. “Effects of Directly Soluble and Fibrous Rapidly Acidifying Chemical Oxygen Demand and Reactor Liquid Surface Tension on Granulation and Sludge-bed Stability in Upflow Anaerobic Sludge-blanket Reactors.” Applied Microbiology and Biotechnology 48 (3): 304–310.
APA
Grootaerd, H., Liessens, B., & Verstraete, W. (1997). Effects of directly soluble and fibrous rapidly acidifying chemical oxygen demand and reactor liquid surface tension on granulation and sludge-bed stability in upflow anaerobic sludge-blanket reactors. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 48(3), 304–310.
Vancouver
1.
Grootaerd H, Liessens B, Verstraete W. Effects of directly soluble and fibrous rapidly acidifying chemical oxygen demand and reactor liquid surface tension on granulation and sludge-bed stability in upflow anaerobic sludge-blanket reactors. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY. 1997;48(3):304–10.
MLA
Grootaerd, Hans, Bart Liessens, and Willy Verstraete. “Effects of Directly Soluble and Fibrous Rapidly Acidifying Chemical Oxygen Demand and Reactor Liquid Surface Tension on Granulation and Sludge-bed Stability in Upflow Anaerobic Sludge-blanket Reactors.” APPLIED MICROBIOLOGY AND BIOTECHNOLOGY 48.3 (1997): 304–310. Print.
@article{185459,
  abstract     = {In recent years, it has become clear that the rapidly acidifying chemical oxygen demand (RACOD) content of the waste water and the surface tension of the reactor liquid contribute to the phenomenon of granular growth in upflow anaerobic sludge-blanket reactors (UASB). By adding 20\% of directly soluble RACOD, in the form of a sucrose;starch mixture, on top of the original COD load and by adjusting the reactor liquid surface tension below 50 mN m(-1) with linear alkylbenzenesulphonate, granular growth and sludge-bed stability could be enhanced significantly within 40 days, Carrot pulp, a waste product having a high short-chain fatty acid precursor potential, was applied as an alternative fibrous RACOD source. Best results were obtained when adding the carrot pulp freshly to the laboratory-scale UASB reactor in an in-recycle liquefying chamber. This concept of adding carrot pulp waste product as a granular growth supplement by means of an in-recycle liquefying chamber therefore merits testing in practice.},
  author       = {Grootaerd, Hans and Liessens, Bart and Verstraete, Willy},
  issn         = {0175-7598},
  journal      = {APPLIED MICROBIOLOGY AND BIOTECHNOLOGY},
  language     = {eng},
  number       = {3},
  pages        = {304--310},
  title        = {Effects of directly soluble and fibrous rapidly acidifying chemical oxygen demand and reactor liquid surface tension on granulation and sludge-bed stability in upflow anaerobic sludge-blanket reactors},
  url          = {http://dx.doi.org/10.1007/s002530051054},
  volume       = {48},
  year         = {1997},
}

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