Počet záznamů: 1

Preparation and elemental composition

  1. 1.
    0369580 - BC-A 2012 RIV US eng M - Část monografie knihy
    Madronová, L. - Novák, J. - Kozler, J. - Novák, František
    Preparation and elemental composition.
    Humic Acids from Raw Materials of the Czech Republic. New York: Nova Science Publisher, 2011 - (Madronová, L.), s. 1-19. Chemistry Research and Applications. ISBN 978-1-61668-965-0
    Výzkumný záměr: CEZ:AV0Z60660521
    Klíčová slova: humic acids * raw materials * Czech Republic
    Kód oboru RIV: CB - Analytická chemie, separace

    The preparation of alkali humates and humic acids from raw materials of Czech Republic (coal, oxyhumolite, lignite, and peat) was aimed. Chosen preparation methods can be implemented in low tonnage technologies and in industrial production. The aim was to get substances available for application in biotechnologies and in human and veterinary medicine. Suspensions prepared by alkali extraction, executed aerobic in the suspension with use of potassium hydroxide were purihed by sedimentation and centrifugation. Humic acids obtained from the refined potassium humate solutions by coagulation by sulfuric acid were separated on filter, rinsed and dried. Other substances were prepared from coal and lignite after their oxidation by nitric acid. Raw materials and substances prepared from them were compared on the basis of their chemical and physical properties. Basic characteristics – the moisture, content of ash, organic part, fulvic acids, leachable humic substances, functional groups (total acidity and carboxyl groups), inorganic constituents in humic substances and organic elemental analysis are presented.
    Trvalý link: http://hdl.handle.net/11104/0203608