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Fertiliser Effect of Ammonia Recovered from Anaerobically Digested Orange Peel Using Gas-Permeable Membranes

Author

Listed:
  • Carmo Horta

    (Polytechnic Institute of Castelo Branco, School of Agriculture, Quinta da Sra. de Mércules, 6001-909 Castelo Branco, Portugal
    CERNAS-IPCB Research Centre for Natural Resources, Environment and Society, Polytechnic Institute of Castelo Branco, 6001-909 Castelo Branco, Portugal)

  • Berta Riaño

    (Agricultural Technological Institute of Castilla y Léon. Ctra. Burgos, km. 119, 47071 Valladolid, Spain)

  • Ofélia Anjos

    (Polytechnic Institute of Castelo Branco, School of Agriculture, Quinta da Sra. de Mércules, 6001-909 Castelo Branco, Portugal
    Centro de Estudos Florestais, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
    Centro de Biotecnologia de Plantas da Beira Interior, Quinta da Sra. de Mércules, 6001-909 Castelo Branco, Portugal)

  • María Cruz García-González

    (Agricultural Technological Institute of Castilla y Léon. Ctra. Burgos, km. 119, 47071 Valladolid, Spain)

Abstract

The manufacture of mineral N fertilisers by the Haber–Bosch process is highly energy-consuming. The nutrient recovery technologies from wastes through low-cost processes will improve the sustainability of the agricultural systems. This work aimed to assess the suitability of the gas-permeable membrane (GPM) technology to recover N from an anaerobic digestate and test the agronomic behaviour of the ammonium sulphate solution (ASS) obtained. About 62% of the total ammonia nitrogen removed from digestate using GPM was recovered, producing an ASS with 14,889 ± 2324 mg N L −1 , which was more than six-fold higher than in digestate. The ASS agronomic behaviour was evaluated by a pot experiment with triticale as a plant test for 34 days in a growth chamber. Compared with the triticale fertilised with the Hoagland solution (Hoag), the ASS provided significantly higher biomass production (+29% dry matter), N uptake (+22%), and higher N agronomic efficiency 3.80 compared with 1.81 mg DM mg −1 N in Hoag, and a nitrogen fertiliser replacement value of 133%. These increases can be due to a biostimulant effect provided by the organic compounds of the ASS as assessed by the FT-Raman spectroscopy. The ASS can be considered a bio-based mineral N fertiliser with a biostimulant effect.

Suggested Citation

  • Carmo Horta & Berta Riaño & Ofélia Anjos & María Cruz García-González, 2022. "Fertiliser Effect of Ammonia Recovered from Anaerobically Digested Orange Peel Using Gas-Permeable Membranes," Sustainability, MDPI, vol. 14(13), pages 1-15, June.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:13:p:7832-:d:849118
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    Cited by:

    1. Wojciech Czekała & Tomasz Jasiński & Mieczysław Grzelak & Kamil Witaszek & Jacek Dach, 2022. "Biogas Plant Operation: Digestate as the Valuable Product," Energies, MDPI, vol. 15(21), pages 1-11, November.

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