About: Solubility and Dissociation of Lignitic Humic Acids in Water Suspensions

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Behavior of humic acids extracted from lignite in water suspension was studied by means of potentiometry. Although humic acids are operationally defined as that fraction of humic substances, which is not soluble under acidic conditions, it does not mean that solid preparation easily dissolves in water. Presented results suggest that dissolving of solid humic acids in water environment is more complex than conventional solubility behaviour of sparingly soluble solids. Multi-step mechanism of solid humic acids interaction with water, including partial equilibrium dissolution as well as direct equilibrium dissociation from the solid state, was proposed and proved experimentally. Only very small part of solid humic acids can be dissolved in water and not giving necessarily saturation at the same time. In contrast to common sparingly soluble solids, solid humic phase thus possesses non-constant chemical potential even under constant temperature and pressure and its activity does not equal to unity, in gen Behavior of humic acids extracted from lignite in water suspension was studied by means of potentiometry. Although humic acids are operationally defined as that fraction of humic substances, which is not soluble under acidic conditions, it does not mean that solid preparation easily dissolves in water. Presented results suggest that dissolving of solid humic acids in water environment is more complex than conventional solubility behaviour of sparingly soluble solids. Multi-step mechanism of solid humic acids interaction with water, including partial equilibrium dissolution as well as direct equilibrium dissociation from the solid state, was proposed and proved experimentally. Only very small part of solid humic acids can be dissolved in water and not giving necessarily saturation at the same time. In contrast to common sparingly soluble solids, solid humic phase thus possesses non-constant chemical potential even under constant temperature and pressure and its activity does not equal to unity, in gen (en) Rozpustnost a disociace (cs)
Title	Solubility and Dissociation of Lignitic Humic Acids in Water Suspensions Solubility and Dissociation of Lignitic Humic Acids in Water Suspensions (en) Rozpustnost a disociace (cs)
skos:prefLabel	Solubility and Dissociation of Lignitic Humic Acids in Water Suspensions Solubility and Dissociation of Lignitic Humic Acids in Water Suspensions (en) Rozpustnost a disociace (cs)
skos:notation	RIV/00216305:26310/05:PU46904!RIV06-GA0-26310___
http://linked.open.../vavai/riv/strany	157-164
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GP104/02/D036)
http://linked.open...iv/cisloPeriodika	2-3
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Pekař, Miloslav Klučáková, Martina
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta chemická
http://linked.open...dnocenehoVysledku	543435
http://linked.open...ai/riv/idVysledku	RIV/00216305:26310/05:PU46904
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	humic acid; lignite; dissociation equilibrium; solubility; polyelectrolytes; suspensions (en)
http://linked.open.../riv/klicoveSlovo	lignite humic acid suspensions polyelectrolytes dissociation equilibrium solubility
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[9FA8D700BDC1]
http://linked.open...i/riv/nazevZdroje	Colloids and Surfaces A: Physicochemical and Engineering Aspects
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Complexation processes in system with characteristic content of humic substances
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	252
http://linked.open...iv/tvurceVysledku	Klučáková, Martina Pekař, Miloslav
issn	0927-7757
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	26310
is http://linked.open...avai/riv/vysledek of	Solubility and Dissociation of Lignitic Humic Acids in Water Suspensions

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