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Amorphous Aluminum Hydroxide Control on Sulfate and Phosphate in Sediment-Solution Systems

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F09%3A00000058" target="_blank" >RIV/00025798:_____/09:00000058 - isvavai.cz</a>

  • Alternative codes found

    RIV/67985831:_____/09:00326225

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Amorphous Aluminum Hydroxide Control on Sulfate and Phosphate in Sediment-Solution Systems

  • Original language description

    We experimentally determined the adsorption characteristics of natural, freshly precipitated Al(OH)3 for SO4 and PO4. The Al-rich sediment strongly adsorbed added PO4 prior to acidification experiment; this sorbed PO4 was released only after substantialdissolution of the sediment, at pH < 3.67. Sorption of P by Al(OH)3 appears to be an important control on dissolved PO4 concentration in surface waters, unless there is a large excess of PO4. Maximum SO4 adsorption occurred at pH 4.2, below which dissolution of the sediment offset the increasing anion adsorption capacity, and formation of AlSO4+ inhibited the increasing SO4 adsorption capacity. This research demonstrates that there are important pH thresholds for anion adsorption in freshwaters below which dissolution of the Al(OH)3 substrate reduces total capacity for anion adsorption. In freshwaters, with sufficient concentrations of suspended Al(OH)3, or in Al(OH)3-rich sediment, PO4 mobility will be severely restricted.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    DD - Geochemistry

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/ME%20840" target="_blank" >ME 840: Abiotic controls on the tropic status of oligotropic surface waters</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2009

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Water, Air and Soil Pollution

  • ISSN

    0049-6979

  • e-ISSN

  • Volume of the periodical

    201

  • Issue of the periodical within the volume

    červen

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    12

  • Pages from-to

  • UT code for WoS article

    000266928600009

  • EID of the result in the Scopus database