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Leachability of denitrifying bioreactor fillings

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F17%3APU124558" target="_blank" >RIV/00216305:26110/17:PU124558 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.5593/sgem2017/52/S20.078" target="_blank" >http://dx.doi.org/10.5593/sgem2017/52/S20.078</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.5593/sgem2017/52/S20.078" target="_blank" >10.5593/sgem2017/52/S20.078</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Leachability of denitrifying bioreactor fillings

  • Original language description

    Denitrifying bioreactors can be used to reduce high nitrate concentrations in agricultural runoff in situ. They operate on the basis of the flow of nitrate-rich water through a filtration medium containing biodegradable organic matter that serves as an organic carbon source for denitrification bacteria. However, undesirable excessive leaching of organic compounds from the bioreactor fillings can occur, especially in the start-up phase. The paper presents the results of static leaching tests conducted on six different wood materials potentially applicable as denitrifying bioreactor fillings, namely a mixture of pine and larch bark, and chips made from oak, poplar, beech, acacia, and spruce wood. The chemical properties of aqueous extracts from wood materials were determined and ecotoxicological bioassays were performed. The results indicate significant differences among the woods of different tree species, mainly in terms of the leaching of organic substances and ecotoxicity. The best results were achieved with the mixture of pine and larch bark, and with poplar chips. In contrast, acacia and oak chips emerged as the least suitable due to their excessive leaching of organic substances and the ecotoxicity of the resulting leachates. Storage of nitrification bioreactor fillings in moist conditions during a dry period led to lower leachability than storage submerged in water. The pretreatment of materials by drying was shown to be somewhat inadvisable.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    40500 - Other agricultural sciences

Result continuities

  • Project

  • Continuities

    S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2017

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    SGEM Conference Proceedings

  • ISBN

    978-619-7408-09-6

  • ISSN

    1314-2704

  • e-ISSN

  • Number of pages

    8

  • Pages from-to

    613-620

  • Publisher name

    STEF92 Technology Ltd.

  • Place of publication

    51 Alexander Malinov Blvd., 1712, Sofia, Bulgari

  • Event location

    Albena

  • Event date

    Jun 27, 2017

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article