Study of water - extractable fractions from South Moravian lignite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F15%3APU110317" target="_blank" >RIV/00216305:26310/15:PU110317 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s12665-014-3671-1" target="_blank" >http://dx.doi.org/10.1007/s12665-014-3671-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12665-014-3671-1" target="_blank" >10.1007/s12665-014-3671-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study of water - extractable fractions from South Moravian lignite

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Study of water - extractable fractions from South Moravian lignite

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

ENVIRON EARTH SCI

ISSN

1866-6280

e-ISSN

1866-6299

Svazek periodika

73

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

3873-3885

Kód UT WoS článku

000351163300066

EID výsledku v databázi Scopus

2-s2.0-84924678294