Detail publikace

Regenerated humic acids obtained by the air oxidation of South Moravian lignite. Part. 1. Production and characterization

KUČERÍK, J. CIHLÁŘ, Z. VLČKOVÁ, Z. DRASTÍK, M.

Originální název

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The influence of lignite air oxidation on the yield and chemical/physical character of regenerated humic acids (RHA) has been studied. RHA were produced under different experimental conditions, i.e. both in static and fluid reactor. Oxidation in the fluid reactor brought first a decrease and after a certain period increase in the yield of RHA. The same observation was done in case of static reactor. It has been verified that higher temperature during the oxidation supports the production of RHA. Despite the difference in the yield of RHA (increase up to 75%) their chemical character was in all cases fairly similar. Some tiny differences were revealed using FTIR which showed the increase in number of ester bonds in RHA produced mainly at temperatures above 80 C causing a significant increase in apparent molecular weight as evaluated by HPSEC.

Klíčová slova

lignite, regenerated humic acids, air oxidation

Autoři

KUČERÍK, J.; CIHLÁŘ, Z.; VLČKOVÁ, Z.; DRASTÍK, M.

Rok RIV

2008

Vydáno

1. 12. 2008

Nakladatel

Slovnaft

Místo

Slovenská Republika

ISSN

1335-3055

Periodikum

Petroleum and Coal

Ročník

Číslo

Stát

Slovenská republika

Strany od

Strany do

Strany počet

BibTex

@article{BUT47250,
  author="Jiří {Kučerík} and Zdeněk {Cihlář} and Zoja {Vlčková} and Martin {Drastík}",
  title="Regenerated humic acids obtained by the air oxidation of South Moravian lignite. Part. 1. Production and characterization",
  journal="Petroleum and Coal",
  year="2008",
  volume="50",
  number="3",
  pages="49--55",
  issn="1335-3055"
}