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  1. Article ; Online: Nitrogen availability in biochar-based fertilizers depending on activation treatment and nitrogen source.

    Castejón-Del Pino, Raúl / Cayuela, María L / Sánchez-García, María / Sánchez-Monedero, Miguel A

    Waste management (New York, N.Y.)

    2023  Volume 158, Page(s) 76–83

    Abstract: Different activation and N-doping treatments were used to produce biochar-based fertilizers (BBFs) with increased N concentration and slow N release. Pristine biochars were produced by pyrolysis of olive tree pruning feedstock at low and high ... ...

    Abstract Different activation and N-doping treatments were used to produce biochar-based fertilizers (BBFs) with increased N concentration and slow N release. Pristine biochars were produced by pyrolysis of olive tree pruning feedstock at low and high temperatures (400 and 800 °C). These biochars were activated either by ultrasonication, or oxidation with hydrogen peroxide (H
    MeSH term(s) Fertilizers/analysis ; Nitrogen ; Hydrogen Peroxide ; Charcoal ; Soil ; Urea ; Water
    Chemical Substances biochar ; Fertilizers ; Nitrogen (N762921K75) ; Hydrogen Peroxide (BBX060AN9V) ; Charcoal (16291-96-6) ; Soil ; Urea (8W8T17847W) ; Water (059QF0KO0R)
    Language English
    Publishing date 2023-01-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2001471-5
    ISSN 1879-2456 ; 0956-053X
    ISSN (online) 1879-2456
    ISSN 0956-053X
    DOI 10.1016/j.wasman.2023.01.007
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

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  2. Article ; Online: Nitrogen availability in biochar-based fertilizers depending on activation treatment and nitrogen source

    Castejón-del Pino, Raúl / Cayuela, María L. / Sánchez-García, María / Sánchez-Monedero, Miguel A.

    Waste Management. 2023 Mar., v. 158 p.76-83

    2023  

    Abstract: Different activation and N-doping treatments were used to produce biochar-based fertilizers (BBFs) with increased N concentration and slow N release. Pristine biochars were produced by pyrolysis of olive tree pruning feedstock at low and high ... ...

    Abstract Different activation and N-doping treatments were used to produce biochar-based fertilizers (BBFs) with increased N concentration and slow N release. Pristine biochars were produced by pyrolysis of olive tree pruning feedstock at low and high temperatures (400 and 800 °C). These biochars were activated either by ultrasonication, or oxidation with hydrogen peroxide (H₂O₂) or nitric acid (HNO₃) to increase their N retention potential. Subsequently biochars were enriched with N with either urea or ammonium sulfate. The activation of low-temperature biochars with HNO₃ was the most effective treatment leading to new surface carboxylic groups that facilitated the later enrichment with N. When treated with urea, BBFs reached 7.0 N%, whereas the H₂O₂ activation only allowed an increase up to 2.0 N%. The use of urea as the external N source was the most efficient for incorporating N. Urea treated biochars had a water-soluble fraction that represented up to 14.5 % of the total N. The hydrolyzable N fraction, composed by amides and simple N heterocycles originated by the N-doping treatments, and nitro groups generated from HNO₃ activation, represented up to 60 % of the total N. This study relates the N chemical forms in the new BBFs to potential N availability in soil. The presence of water-soluble, hydrolyzable and non-hydrolyzable N implied that these BBFs may supply N that would be progressively available for plants, acting as slow-release fertilizers.
    Keywords Olea europaea ; ammonium sulfate ; biochar ; feedstocks ; heterocyclic compounds ; hydrogen peroxide ; nitric acid ; nitrogen ; oxidation ; pyrolysis ; soil ; total nitrogen ; ultrasonic treatment ; urea ; waste management ; water solubility ; Agricultural waste ; Olive tree pruning ; N-doped biochar ; Available N ; Nitrogen use efficiency ; Oxidizing treatment
    Language English
    Dates of publication 2023-03
    Size p. 76-83.
    Publishing place Elsevier Ltd
    Document type Article ; Online
    Note Use and reproduction
    ZDB-ID 2001471-5
    ISSN 1879-2456 ; 0956-053X
    ISSN (online) 1879-2456
    ISSN 0956-053X
    DOI 10.1016/j.wasman.2023.01.007
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

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