Detail publikace

Study of water - extractable fractions from South Moravian lignite

DOSKOČIL, L. GRASSET, L. ENEV, V. KALINA, L. PEKAŘ, M.

Originální název

Study of water - extractable fractions from South Moravian lignite

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Lignite can be applied directly in natural form on agricultural fields as a soil conditioner. However there is little information on leaching of risky compounds by its interaction with water. South Moravian lignite was therefore extracted with water at 25 C and 2.3% of water-soluble fractions were obtained from lignite corresponding to 0.3% of total organic carbon. All ten fractions form aromatic and aliphatic structures with oxygen containing functional groups such as carboxyl groups, alcohols, ethers, esters, and fractions can be characterized as fulvic-like and humic-like substances. According to the XPS spectra, the fractions contain two nitrogen forms, one of which is ascribed to pyrroles and the second is related to protonated amines or quaternary nitrogen. Analysis at molecular level showed that the fractions contain compounds such as benzene carboxylic acids and their derivatives, small aliphatic diacids, fatty acids and polyols. Most of the identified molecules reflect clearly the origin from microbial degradation.The differences between the individual fractions are negligible, especially after 21 days of extraction. From environmental points' of view, it seems that the identified compounds do not represent a toxic risk.

Klíčová slova

lignite; water - soluble fractions; fulvic acid; humic acid; organic matter

Autoři

DOSKOČIL, L.; GRASSET, L.; ENEV, V.; KALINA, L.; PEKAŘ, M.

Rok RIV

2015

Vydáno

13. 3. 2015

ISSN

1866-6280

Periodikum

ENVIRON EARTH SCI

Ročník

73

Číslo

7

Stát

Spolková republika Německo

Strany od

3873

Strany do

3885

Strany počet

13

BibTex

@article{BUT109237,
  author="Leoš {Doskočil} and Laurent {Grasset} and Vojtěch {Enev} and Lukáš {Kalina} and Miloslav {Pekař}",
  title="Study of water - extractable fractions from South Moravian lignite",
  journal="ENVIRON EARTH SCI",
  year="2015",
  volume="73",
  number="7",
  pages="3873--3885",
  doi="10.1007/s12665-014-3671-1",
  issn="1866-6280"
}