Organic coating on biochar explains its nutrient retention and stimulation of soil fertility

Nikolas Hagemann, Stephen Joseph, Hans Peter Schmidt, C.I. Kammann, Johannes Harter, Thomas Broch, Robert Young, Krisztina Varga, Sarasadat Taherymoosavi, K. Wade Elliott, Amy McKenna, Mihaela Albu, Claudia Mayrhofer, Martin Obst, Pellegrino Conte, Alba Dieguez-Alonso, Silvia Orsetti, Edisson Subdiaga, Sebastian Behrens, Andreas Kappler

Publikation: Beitrag in einer FachzeitschriftArtikelForschung

Abstract

Amending soil with biochar (pyrolized biomass) is suggested as a globally applicableapproach to address climate change and soil degradation by carbon sequestration, reducingsoil-borne greenhouse-gas emissions and increasing soil nutrient retention. Biochar wasshown to promote plant growth, especially when combined with nutrient-rich organic matter,e.g., co-composted biochar. Plant growth promotion was explained by slow release ofnutrients, although a mechanistic understanding of nutrient storage in biochar is missing.Here we identify a complex, nutrient-rich organic coating on co-composted biochar thatcovers the outer and inner (pore) surfaces of biochar particles using high-resolution spectro(micro)scopy and mass spectrometry. Fast field cycling nuclear magnetic resonance, electrochemicalanalysis and gas adsorption demonstrated that this coating adds hydrophilicity,redox-active moieties, and additional mesoporosity, which strengthens biocharwaterinteractions and thus enhances nutrient retention. This implies that the functioningof biochar in soil is determined by the formation of an organic coating, rather than biocharsurface oxidation, as previously suggested.
Originalspracheenglisch
Seiten (von - bis)8:1089
Seitenumfang11
FachzeitschriftNature Communications
DOIs
PublikationsstatusVeröffentlicht - 2017

ASJC Scopus subject areas

  • !!Materials Science(all)

Fields of Expertise

  • Advanced Materials Science

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

Dies zitieren

Hagemann, N., Joseph, S., Schmidt, H. P., Kammann, C. I., Harter, J., Broch, T., ... Kappler, A. (2017). Organic coating on biochar explains its nutrient retention and stimulation of soil fertility. Nature Communications , 8:1089. https://doi.org/DOI: 10.1038/s41467-017-01123-0

Organic coating on biochar explains its nutrient retention and stimulation of soil fertility. / Hagemann, Nikolas; Joseph, Stephen; Schmidt, Hans Peter; Kammann, C.I.; Harter, Johannes; Broch, Thomas; Young, Robert; Varga, Krisztina; Taherymoosavi, Sarasadat; Elliott, K. Wade; McKenna, Amy; Albu, Mihaela; Mayrhofer, Claudia; Obst, Martin; Conte, Pellegrino; Dieguez-Alonso, Alba; Orsetti, Silvia; Subdiaga, Edisson; Behrens, Sebastian; Kappler, Andreas.

in: Nature Communications , 2017, S. 8:1089.

Publikation: Beitrag in einer FachzeitschriftArtikelForschung

Hagemann, N, Joseph, S, Schmidt, HP, Kammann, CI, Harter, J, Broch, T, Young, R, Varga, K, Taherymoosavi, S, Elliott, KW, McKenna, A, Albu, M, Mayrhofer, C, Obst, M, Conte, P, Dieguez-Alonso, A, Orsetti, S, Subdiaga, E, Behrens, S & Kappler, A 2017, 'Organic coating on biochar explains its nutrient retention and stimulation of soil fertility' Nature Communications , S. 8:1089. https://doi.org/DOI: 10.1038/s41467-017-01123-0
Hagemann, Nikolas ; Joseph, Stephen ; Schmidt, Hans Peter ; Kammann, C.I. ; Harter, Johannes ; Broch, Thomas ; Young, Robert ; Varga, Krisztina ; Taherymoosavi, Sarasadat ; Elliott, K. Wade ; McKenna, Amy ; Albu, Mihaela ; Mayrhofer, Claudia ; Obst, Martin ; Conte, Pellegrino ; Dieguez-Alonso, Alba ; Orsetti, Silvia ; Subdiaga, Edisson ; Behrens, Sebastian ; Kappler, Andreas. / Organic coating on biochar explains its nutrient retention and stimulation of soil fertility. in: Nature Communications . 2017 ; S. 8:1089.
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title = "Organic coating on biochar explains its nutrient retention and stimulation of soil fertility",
abstract = "Amending soil with biochar (pyrolized biomass) is suggested as a globally applicableapproach to address climate change and soil degradation by carbon sequestration, reducingsoil-borne greenhouse-gas emissions and increasing soil nutrient retention. Biochar wasshown to promote plant growth, especially when combined with nutrient-rich organic matter,e.g., co-composted biochar. Plant growth promotion was explained by slow release ofnutrients, although a mechanistic understanding of nutrient storage in biochar is missing.Here we identify a complex, nutrient-rich organic coating on co-composted biochar thatcovers the outer and inner (pore) surfaces of biochar particles using high-resolution spectro(micro)scopy and mass spectrometry. Fast field cycling nuclear magnetic resonance, electrochemicalanalysis and gas adsorption demonstrated that this coating adds hydrophilicity,redox-active moieties, and additional mesoporosity, which strengthens biocharwaterinteractions and thus enhances nutrient retention. This implies that the functioningof biochar in soil is determined by the formation of an organic coating, rather than biocharsurface oxidation, as previously suggested.",
author = "Nikolas Hagemann and Stephen Joseph and Schmidt, {Hans Peter} and C.I. Kammann and Johannes Harter and Thomas Broch and Robert Young and Krisztina Varga and Sarasadat Taherymoosavi and Elliott, {K. Wade} and Amy McKenna and Mihaela Albu and Claudia Mayrhofer and Martin Obst and Pellegrino Conte and Alba Dieguez-Alonso and Silvia Orsetti and Edisson Subdiaga and Sebastian Behrens and Andreas Kappler",
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AU - Hagemann, Nikolas

AU - Joseph, Stephen

AU - Schmidt, Hans Peter

AU - Kammann, C.I.

AU - Harter, Johannes

AU - Broch, Thomas

AU - Young, Robert

AU - Varga, Krisztina

AU - Taherymoosavi, Sarasadat

AU - Elliott, K. Wade

AU - McKenna, Amy

AU - Albu, Mihaela

AU - Mayrhofer, Claudia

AU - Obst, Martin

AU - Conte, Pellegrino

AU - Dieguez-Alonso, Alba

AU - Orsetti, Silvia

AU - Subdiaga, Edisson

AU - Behrens, Sebastian

AU - Kappler, Andreas

PY - 2017

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N2 - Amending soil with biochar (pyrolized biomass) is suggested as a globally applicableapproach to address climate change and soil degradation by carbon sequestration, reducingsoil-borne greenhouse-gas emissions and increasing soil nutrient retention. Biochar wasshown to promote plant growth, especially when combined with nutrient-rich organic matter,e.g., co-composted biochar. Plant growth promotion was explained by slow release ofnutrients, although a mechanistic understanding of nutrient storage in biochar is missing.Here we identify a complex, nutrient-rich organic coating on co-composted biochar thatcovers the outer and inner (pore) surfaces of biochar particles using high-resolution spectro(micro)scopy and mass spectrometry. Fast field cycling nuclear magnetic resonance, electrochemicalanalysis and gas adsorption demonstrated that this coating adds hydrophilicity,redox-active moieties, and additional mesoporosity, which strengthens biocharwaterinteractions and thus enhances nutrient retention. This implies that the functioningof biochar in soil is determined by the formation of an organic coating, rather than biocharsurface oxidation, as previously suggested.

AB - Amending soil with biochar (pyrolized biomass) is suggested as a globally applicableapproach to address climate change and soil degradation by carbon sequestration, reducingsoil-borne greenhouse-gas emissions and increasing soil nutrient retention. Biochar wasshown to promote plant growth, especially when combined with nutrient-rich organic matter,e.g., co-composted biochar. Plant growth promotion was explained by slow release ofnutrients, although a mechanistic understanding of nutrient storage in biochar is missing.Here we identify a complex, nutrient-rich organic coating on co-composted biochar thatcovers the outer and inner (pore) surfaces of biochar particles using high-resolution spectro(micro)scopy and mass spectrometry. Fast field cycling nuclear magnetic resonance, electrochemicalanalysis and gas adsorption demonstrated that this coating adds hydrophilicity,redox-active moieties, and additional mesoporosity, which strengthens biocharwaterinteractions and thus enhances nutrient retention. This implies that the functioningof biochar in soil is determined by the formation of an organic coating, rather than biocharsurface oxidation, as previously suggested.

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DO - DOI: 10.1038/s41467-017-01123-0

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