Results 31 to 40 of about 5,243,021 (356)
C, 2022 The possibility of increasing the complexity of the operational properties of environmentally safe biodegradable polymer hydrogel materials based on hydroxypropyl methylcellulose due to modification by humic acids from lignite is considered.
Denis Miroshnichenko +5 more
doaj +1 more source
PLoS ONE, 2019 Humic acids derived from Chinese weathered coal were oxidized with hydrogen peroxide (H2O2) under various conditions, and their chemical composition and structure were examined.
Liping Zhou +4 more
semanticscholar +1 more source
Utilisation of chemically treated coal [PDF]
Acta Montanistica Slovaca, 2002 The numerous application of coal with high content of humic substances are known. They are used in many branches of industry. The complex study of the composition of coal from upper Nitra mines has directed research to its application in the field of ...
Beovská Mária +2 more
doaj
Humic acids increase the maize seedlings exudation yield
Chemical and Biological Technologies in Agriculture, 2019 BackgroundThe role of humic acids in root crosstalk signaling has been demonstrated, including modification of soil properties, plant physiology, and regulation of microbial community structure. The exudation underpins nearly all major changes that occur
L. Canellas +4 more
semanticscholar +1 more source
Бюллетень Почвенного института им. В.В. Докучаева, 2018 Double-shot pyrolysis with gas chromatography and mass detection (Double-shot GC MS) was conducted for a sample of typical chernozem and humic acids separated from it. The humic acids preparations were pyrolyzed at 500, 600 and 700°C.
V. A. Kholodov +3 more
doaj +1 more source
Extraction of humic acid by coacervate: Investigation of direct and back processes [PDF]
, 2012 The two aqueous phases extraction process is widely used in environmental clean up of industrial effluents and fine chemical products for their reuse.
Derriche, Zoubir +4 more
core +3 more sources
Interaction of metal ions with humic acids of brown coals of Kazakhstan
Journal of Experimental Nanoscience, 2020 This paper investigates interaction processes of the Fe3+, Cu2+, Ni2+, and Co2+ cations with humic acids isolated from brown coals of Ekibastuz basin.
A. Dauletbay +3 more
doaj +1 more source
Properties of humic acids from copper tailings 20 years after reclamation [PDF]
Journal of the Serbian Chemical Society, 2020 Part of Cu post flotation tailings of Serbia ZiJin Bor Copper, Serbia, was reclaimed by restoration of top soil with arable soils, and revegetation in 1991.
Radmanović Svjetlana B. +5 more
doaj +1 more source
Journal of Soils and Sediments, 2018 PurposeTechnological progress and high market demand contributed to a significant interest in the production of fertilizers based on humic acids. The aim of this study was to evaluate the possibilities of using humic acids obtained from lignite in the ...
M. Huculak-Mączka +2 more
semanticscholar +1 more source
Dissolved humic substances supplied as potential enhancers of Cu, Cd, and Pb adsorption by two different mangrove sediments [PDF]
, 2018 Purpose The external supply of humic substances has been recently suggested for the remediation of metal-polluted sediments; however, little is known about how to supply them and their effects on metal mobility.
Barros Dobbss, Leonardo +4 more
core +1 more source