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Developing a Compost Quality Index Reactivity

Molecules (Basel, Switzerland), 2023-02, Vol.28 (3) [Peer Reviewed Journal]

COPYRIGHT 2023 MDPI AG ;ISSN: 1420-3049 ;EISSN: 1420-3049 ;DOI: 10.3390/molecules28031503

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  • Title:
    Developing a Compost Quality Index Reactivity
  • Author: Silva, Ana C ; Rocha, Pedro ; Geraldo, Dulce ; Cunha, Ana ; Antelo, Juan ; Pinheiro, José P ; Fiol, Sarah ; Bento, Fátima
  • Subjects: Pharmaceutical industry
  • Is Part Of: Molecules (Basel, Switzerland), 2023-02, Vol.28 (3)
  • Description: The present work demonstrates the use of Cd[sup.2+] as a reactivity probe of the fulvic acids (FAs), humic acids (HAs) and dissolved organic matter (DOM) compost extracts. Significant differences were observed between the extracts, with the HA extract showing the highest reactivity. Comparing the different composts, the largest reactivity variation was again observed for HA then FA and finally DOM extracts. The Cd[sup.2+] binding extent was used to calculate the quality of composts and compared with a reference of uncomposted organic fertiliser (FLW), leading to the definition of an operational scale of compost quality. The parameter equivalent mass of fertiliser (mEF) was used for this scale sorted the seven composts from 0.353 to 1.09 kg FLW, for compost of sewage sludge (CSS) and vermicompost of domestic waste (CVDW), respectively. The significance of this parameter was verified through a correlation analysis between binding extent and the effect of compost application on lettuce crop growth in a field trial. The results demonstrate the potentiality of FA and HA extracts as markers of compost bioactivity and the use of Cd[sup.2+] as a reactivity probe.
  • Publisher: MDPI AG
  • Language: English
  • Identifier: ISSN: 1420-3049
    EISSN: 1420-3049
    DOI: 10.3390/molecules28031503
  • Source: Geneva Foundation Free Medical Journals at publisher websites
    ProQuest Databases
    PubMed Central
    Alma/SFX Local Collection
    DOAJ: Directory of Open Access Journals
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