Designing biochar properties through the blending of biomass feedstock with metals: Impact on oxyanions adsorption behavior

Alba Dieguez-Alonso, Andrés Anca-Couce, Vladimír Frišták, Eduardo Moreno-Jiménez, Markus Bacher, Thomas D. Bucheli, Giulia Cimò, Pellegrino Conte, Nikolas Hagemann, Andreas Haller, Isabel Hilber, Olivier Husson, Claudia I. Kammann, Norbert Kienzl, Jens Leifeld, Thomas Rosenau, Gerhard Soja, Hans Peter Schmidt

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

Metal-blending of biomass prior to pyrolysis is investigated in this work as a tool to modify biochar physico-chemical properties and its behavior as adsorbent. Six different compounds were used for metal-blending: AlCl3, Cu(OH)2, FeSO4, KCl, MgCl2 and Mg(OH)2. Pyrolysis experiments were performed at 400 and 700 °C and the characterization of biochar properties included: elemental composition, thermal stability, surface area and pore size distribution, Zeta potential, redox potential, chemical structure (with nuclear magnetic resonance) and adsorption behavior of arsenate, phosphate and nitrate. Metalblending strongly affected biochars’ surface charge and redox potential. Moreover, it increased biochars’ microporosity (per mass of organic carbon). For most biochars, mesoporosity was also increased. The adsorption behavior was enhanced for all metal-blended biochars, although with significant differences across species: Mg(OH)2-blended biochar produced at 400 °C showed the highest phosphate adsorption capacity (Langmuir Qmax approx. 250 mg g−1), while AlCl3-blended biochar produced also at 400 °C showed the highest arsenate adsorption (Langmuir Qmax approx. 14 mg g−1). Significant differences were present, even for the same biochar, with respect to the investigated oxyanions. This indicates that biochar properties need to be optimized for each application, but also that this optimization can be achieved with tools such as metal-blending. These results constitute a significant contribution towards the production of designer biochars.

Originalspracheenglisch
Seiten (von - bis)743-753
Seitenumfang11
FachzeitschriftChemosphere
Jahrgang214
DOIs
PublikationsstatusVeröffentlicht - 1 Jan 2019

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Biomass
Feedstocks
Adsorption
Metals
adsorption
metal
biomass
arsenate
redox potential
pyrolysis
Phosphates
Pyrolysis
phosphate
Microporosity
Zeta potential
Surface charge
Organic carbon
Adsorbents
Chemical properties
Pore size

Schlagwörter

    ASJC Scopus subject areas

    • Environmental engineering
    • Umweltchemie
    • !!Chemistry(all)
    • !!Pollution
    • !!Health, Toxicology and Mutagenesis

    Dies zitieren

    Designing biochar properties through the blending of biomass feedstock with metals : Impact on oxyanions adsorption behavior. / Dieguez-Alonso, Alba; Anca-Couce, Andrés; Frišták, Vladimír; Moreno-Jiménez, Eduardo; Bacher, Markus; Bucheli, Thomas D.; Cimò, Giulia; Conte, Pellegrino; Hagemann, Nikolas; Haller, Andreas; Hilber, Isabel; Husson, Olivier; Kammann, Claudia I.; Kienzl, Norbert; Leifeld, Jens; Rosenau, Thomas; Soja, Gerhard; Schmidt, Hans Peter.

    in: Chemosphere, Jahrgang 214, 01.01.2019, S. 743-753.

    Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

    Dieguez-Alonso, A, Anca-Couce, A, Frišták, V, Moreno-Jiménez, E, Bacher, M, Bucheli, TD, Cimò, G, Conte, P, Hagemann, N, Haller, A, Hilber, I, Husson, O, Kammann, CI, Kienzl, N, Leifeld, J, Rosenau, T, Soja, G & Schmidt, HP 2019, 'Designing biochar properties through the blending of biomass feedstock with metals: Impact on oxyanions adsorption behavior' Chemosphere, Jg. 214, S. 743-753. https://doi.org/10.1016/j.chemosphere.2018.09.091
    Dieguez-Alonso, Alba ; Anca-Couce, Andrés ; Frišták, Vladimír ; Moreno-Jiménez, Eduardo ; Bacher, Markus ; Bucheli, Thomas D. ; Cimò, Giulia ; Conte, Pellegrino ; Hagemann, Nikolas ; Haller, Andreas ; Hilber, Isabel ; Husson, Olivier ; Kammann, Claudia I. ; Kienzl, Norbert ; Leifeld, Jens ; Rosenau, Thomas ; Soja, Gerhard ; Schmidt, Hans Peter. / Designing biochar properties through the blending of biomass feedstock with metals : Impact on oxyanions adsorption behavior. in: Chemosphere. 2019 ; Jahrgang 214. S. 743-753.
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    AU - Dieguez-Alonso, Alba

    AU - Anca-Couce, Andrés

    AU - Frišták, Vladimír

    AU - Moreno-Jiménez, Eduardo

    AU - Bacher, Markus

    AU - Bucheli, Thomas D.

    AU - Cimò, Giulia

    AU - Conte, Pellegrino

    AU - Hagemann, Nikolas

    AU - Haller, Andreas

    AU - Hilber, Isabel

    AU - Husson, Olivier

    AU - Kammann, Claudia I.

    AU - Kienzl, Norbert

    AU - Leifeld, Jens

    AU - Rosenau, Thomas

    AU - Soja, Gerhard

    AU - Schmidt, Hans Peter

    N1 - Copyright © 2018 Elsevier Ltd. All rights reserved.

    PY - 2019/1/1

    Y1 - 2019/1/1

    N2 - Metal-blending of biomass prior to pyrolysis is investigated in this work as a tool to modify biochar physico-chemical properties and its behavior as adsorbent. Six different compounds were used for metal-blending: AlCl3, Cu(OH)2, FeSO4, KCl, MgCl2 and Mg(OH)2. Pyrolysis experiments were performed at 400 and 700 °C and the characterization of biochar properties included: elemental composition, thermal stability, surface area and pore size distribution, Zeta potential, redox potential, chemical structure (with nuclear magnetic resonance) and adsorption behavior of arsenate, phosphate and nitrate. Metalblending strongly affected biochars’ surface charge and redox potential. Moreover, it increased biochars’ microporosity (per mass of organic carbon). For most biochars, mesoporosity was also increased. The adsorption behavior was enhanced for all metal-blended biochars, although with significant differences across species: Mg(OH)2-blended biochar produced at 400 °C showed the highest phosphate adsorption capacity (Langmuir Qmax approx. 250 mg g−1), while AlCl3-blended biochar produced also at 400 °C showed the highest arsenate adsorption (Langmuir Qmax approx. 14 mg g−1). Significant differences were present, even for the same biochar, with respect to the investigated oxyanions. This indicates that biochar properties need to be optimized for each application, but also that this optimization can be achieved with tools such as metal-blending. These results constitute a significant contribution towards the production of designer biochars.

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    KW - Designer biochar

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    KW - Oxyanion

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    KW - Pore size distribution

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