Results 41 to 50 of about 63,548 (216)
Spectral Study of Modified Humic Acids from Lignite
E3S Web of Conferences, 2017 The IR-Fourier, ESR and solid-state 13C NMR analysis are used for investigation of unmodified and modified humic acids obtained from Tisul lignite (the Kansko-Achinsk Basin).
Zherebtsov Sergey +3 more
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Química Nova, 2013 Low-rank coals are an important source of humic acids, which are important in retention processes of water and nutrients in plants. In this study coal samples of Montelibano, Colombia, were oxidized with air at different temperatures and subsequently ...
Ruben Anillo-Correa +2 more
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Humic acids in medicine and cosmetics [PDF]
, 2010 Hlavní náplní této práce bylo tvořit internetové a literární rešerše zaměřené na dosud známé teoretické poznatky, patentové přihlášky a skutečné realizace, týkající se využití huminových kyselin nebo materiálů, které je obsahují, v oblasti humánní i ...
Šmídová, Helena
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Sorption of Neodymium from Nitrate Solutions by Humic Acids-Based Sorbent
Eurasian Chemico-Technological Journal, 2022 This work obtained a sorbent based on humic acids (HA) isolated from oxidized brown coals of the Maikuben deposit. The study of humic acids by IR spectroscopy showed the presence of various functional groups (OH-, COOH-) in the sorbent, which can enter
A.G. Ismailova +6 more
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Moringa oleifera lectin and binding affinity to humic acids : application to water treatment [PDF]
, 2007 Humic acids, natural organic matter, constitute a problem in water treatment; they react with chlorine forming undesirable disinfection byproducts.
Brito, A. G. +7 more
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Hydration and water holding properties of cross-linked lignite humic acids [PDF]
, 2014 Lignite and lignite humic acids, which are used as soil amendments sometimes, are supposed to improve soil properties such as water holding capacity.
Cihlar, Z +4 more
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Heavy metal distribution between fractions of humic substances in heavily polluted soils
Plant, Soil and Environment, 2004 Soil organic matter is important in controlling heavy metal behaviour in soils. This study aims to determine the distribution of organically bound Cd, Pb, and Zn between humic and fulvic acids in 20 samples of heavily polluted Fluvisols.
L. Borůvka, O. Drábek
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Photochemical UV/TiO2 treatment of olive mill wastewater (OMW) [PDF]
, 2008 Olive mill wastewater (OMW) was treated by photocatalysis using TiO2 under UV irradiation on the laboratory scale. The chemical oxygen demand, the coloration at 330 nm, and the level of phenols all showed decreases which, after a 24-h treatment, reached ...
Bailly, Jean-René +7 more
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Soil and Water Research, 2007 The aim of the present paper was to determine hydrophilic and hydrophobic properties and the degree of polydispersity of humic acids depending on their degree of maturity and the properties of the plant material participating in the process of ...
Bozena Debska +2 more
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Бюллетень сибирской медицины, 2009 In article results of research of a chemical structure of humic acids of low-moor woody-grassy type of peat of Tomsk Region are resulted by methods of the elemental analysis and infra-red spectroscopy.
M. V. Belousov +4 more
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