Characterisation of brown coal humic acids and modified humic acids using pyrolysis gcms and other techniques

1996 ◽  
Vol 32 (1-4) ◽  
pp. 229-240 ◽  
Author(s):  
W.R. Jackson ◽  
G.D. Bongers ◽  
P.J. Redlich ◽  
G. Favas ◽  
Y. Fei ◽  
...  
Keyword(s):  
Humic Acids ◽  
Brown Coal ◽  
Modified Humic Acids

Phenanthrene Sorption to Structurally Modified Humic Acids

2003 ◽  
Vol 32 (5) ◽  
pp. 1750-1758 ◽  
Author(s):  
Myrna J. Simpson ◽  
Benny Chefetz ◽  
Patrick G. Hatcher
Keyword(s):  
Humic Acids ◽  
Modified Humic Acids

Modified humic acids from lignite

2015 ◽  
Vol 58 (10) ◽  
pp. 400-403 ◽  
Author(s):  
S. I. Zherebtsov ◽  
N. V. Malyshenko ◽  
L. V. Bryukhovetskaya ◽  
Z. R. Ismagilov
Keyword(s):  
Humic Acids ◽  
Modified Humic Acids

scholarly journals The effect of fertilization with brown coal on Haplic Luvisol humic acids

2011 ◽  
Vol 48 (No. 1) ◽  
pp. 33-39 ◽  
Author(s):  
B. Dębska ◽  
A. Maciejewska ◽  
J. Kwiatkowska
Keyword(s):  
Thermal Decomposition ◽  
Elemental Composition ◽  
Humic Acids ◽  
Brown Coal ◽  
Decomposition Process ◽  
Lower Content

The influence of fertilization with brown coal (used as preparation called Rekulter) on properties of humic acids extracted from haplic luvisol was studied. Characteristics of humic acids were identified by their elemental composition, thermal decomposition, and infrared and UV-VIS spectra. It was found that humic acids formed during decomposition process of Rekulter in soil were characterised by a higher content of carbon (38.6% versus 35.4%), a lower content of nitrogen (1.50% versus 2.73%) and a higher resistance to thermal decomposition, when compared with humic acids extracted from soils without Rekulter application. Due to special properties of Rekulter, additional liming did not affect the properties of humic acids.

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