Selective electrodialysis for nutrient recovery and pharmaceutical removal from liquid digestate: Pilot-scale investigation and potential fertilizer production.

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  • Additional Information
    • Source:
      Publisher: Elsevier Applied Science Country of Publication: England NLM ID: 9889523 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-2976 (Electronic) Linking ISSN: 09608524 NLM ISO Abbreviation: Bioresour Technol Subsets: MEDLINE
    • Publication Information:
      Original Publication: Barking, Essex, England : New York, N.Y. : Elsevier Applied Science ; Elsevier Science Pub. Co., 1991-
    • Subject Terms:
      Fertilizers* ; Membranes, Artificial* ; Dialysis*/methods; Pilot Projects ; Pharmaceutical Preparations/chemistry ; Nutrients ; Diclofenac
    • Abstract:
      The present research employs a pilot-scale selective electrodialysis system to treat liquid digestate, fractionating nutrient ions and exploring fertilizer creation via ammonia stripping and phosphorus precipitation, while studying pharmaceutical transport behavior and examining membrane fouling. The influence of diverse potentials was studied in simulated and real digestate, with 30 V application proven more efficient overall. Applying consecutive runs resulted in products that were 7.9, 7.4, 1.7, 5.3, and 6 times more concentrated compared to the feed solution for NH 4 + , K + , PO 4 3- , Ca 2+ , and Mg 2+ , respectively. Pharmaceuticals analysis showed that ciprofloxacin was completely retained in the liquid digestate, while ibuprofen was detected in the anionic product. Diclofenac was initially present in the digestate but was undetectable in the final products, suggesting it adhered to the membrane. Membranes showed inorganic and organic fouling. The monovalent cation exchange membrane had severe salt scaling, showing calcium and magnesium deposits, and fewer functional groups.
      Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
      (Copyright © 2024 Elsevier Ltd. All rights reserved.)
    • Contributed Indexing:
      Keywords: Digestate; Membrane fouling; Nutrient recovery; Pharmaceuticals; Selective electrodialysis
    • Accession Number:
      0 (Fertilizers)
      0 (Membranes, Artificial)
      0 (Pharmaceutical Preparations)
      144O8QL0L1 (Diclofenac)
    • Publication Date:
      Date Created: 20240831 Date Completed: 20240915 Latest Revision: 20240915
    • Publication Date:
      20240916
    • Accession Number:
      10.1016/j.biortech.2024.131386
    • Accession Number:
      39216703