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FACTORS HAVING EFFECT ON THE DOLOMITE DISSOLUTION IN DILUTE NITRIC ACID

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43902226" target="_blank" >RIV/60461373:22310/16:43902226 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    FACTORS HAVING EFFECT ON THE DOLOMITE DISSOLUTION IN DILUTE NITRIC ACID

  • Original language description

    Opening kinetic study of the reaction between dolomite and nitric acid was accomplished. This heterogeneous non-catalyzed reaction may play a key role for example in the magnesium fertilizers technology based on a domestic raw material in the future. For achieving practical significance is necessary to know and be able to describe the kinetic behavior under the conditions, where the concentration of nitric acid is low and therefore the reaction rate is rapidly decreasing. All reaction experiments were carried out in an isothermal batch reactor vessel including an agitator shaft with a four-blade propeller stirrer. The effects of nitric acid concentration (from 10 to 100 mol m-3), reaction temperature (from 293 to 333 K) and an initial concentration of reaction products - calcium nitrate and magnesium nitrate (from 0 to 1389 mol m-3) were studied. A pH-stat titration for observation of the reaction course and calculation of a degree of raw dolomite conversion was used. This method is based on maintaining of pH-value of the reaction solution using small additions of more concentrated nitric acid. For evaluation of chosen kinetic parameters the proper equations derived from a model describing a reaction for a nonporous spherical particle - the shrinking core model - were applied.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    CI - Industrial chemistry and chemical engineering

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2016

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    PROCEEDINGS of the 4th International Conference on Chemical Technology

  • ISBN

    978-80-86238-94-4

  • ISSN

    2336-811X

  • e-ISSN

  • Number of pages

    4

  • Pages from-to

    193-196

  • Publisher name

    Česká společnost průmyslové chemie (ČSPCH)

  • Place of publication

    Praha

  • Event location

    Mikulov

  • Event date

    Apr 25, 2016

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article