Use of fermentation processes for improving the dissolution of phosphorus and its recovery from waste activated sludge.

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  • Additional Information
    • Source:
      Publisher: Taylor & Francis Country of Publication: England NLM ID: 9884939 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1479-487X (Electronic) Linking ISSN: 09593330 NLM ISO Abbreviation: Environ Technol Subsets: MEDLINE
    • Publication Information:
      Publication: 2008- : Oxford : Taylor & Francis
      Original Publication: London : Publications Division, Selper Ltd., 1990-
    • Subject Terms:
      Phosphorus* ; Sewage*; Fatty Acids, Volatile ; Fermentation ; Recycling ; Solubility
    • Abstract:
      Recycling phosphorus from waste activated sludge has attracted a lot of interest to tackle the problem of phosphorus stocks depletion and the increase in food demand. In this study, the use of fermentation processes was investigated to enhance phosphorus dissolution from waste activated sludge to improve its recycling. Two fermentation processes, bioacidification and dark fermentation, were used on two different sludges fermented with wheat starch syrup in continuous operating conditions. Hydrogen yield from the co-substrate fermentation with waste activated sludge reached 3.9 mmolH 2 .gCOD cosubstrate -1 yield during dark fermentation process and was negligible during bioacidification. Dissolved phosphorus in the waste activated sludge increased by 68% during bioacidification and by 43% during dark fermentation. In both processes, phosphorus dissolution was accompanied by iron, calcium and magnesium dissolution. Results show that fermentation enhances phosphorus dissolution in waste activated sludge to improve its recovery along with hydrogen and organic acids.
    • Contributed Indexing:
      Keywords: Fermentation; bioacidification; dark fermentation; phosphorus; phosphorus recovery
    • Accession Number:
      0 (Fatty Acids, Volatile)
      0 (Sewage)
      27YLU75U4W (Phosphorus)
    • Publication Date:
      Date Created: 20200922 Date Completed: 20220401 Latest Revision: 20220401
    • Publication Date:
      20231215
    • Accession Number:
      10.1080/09593330.2020.1827301
    • Accession Number:
      32957838