About: Amorphous Aluminum Hydroxide Control on Sulfate and Phosphate in Sediment-Solution Systems

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We experimentally determined the adsorption characteristics of natural, freshly precipitated Al(OH)3 for SO4 and PO4. The fresh Al precipitate occurred in stream sediment of Jachymov Stream (Czech Republic). The Al-rich sediment strongly adsorbed added PO4 prior to acidification experiment; this sorbed PO4 was released only after substantial dissolution of the sediment, at pH 3.67. Sorption of P by Al(OH)3 appears to be an important control on dissolved PO4 concentration in surface waters, unless there is a large excess of PO4. Acidification of the sediment-solution system caused protonation of the sediment surface, thereby increasing the adsorption capacity for SO4. Maximum SO4 adsorption occurred at pH 4.2, below which dissolution of the sediment offset the increasing anion adsorption capacity, and formation of AISO4 + inhibited the increasing SO4 adsorption capacity. This research demonstrates that there are important pH thresholds for anion adsorption in freshwaters We experimentally determined the adsorption characteristics of natural, freshly precipitated Al(OH)3 for SO4 and PO4. The fresh Al precipitate occurred in stream sediment of Jachymov Stream (Czech Republic). The Al-rich sediment strongly adsorbed added PO4 prior to acidification experiment; this sorbed PO4 was released only after substantial dissolution of the sediment, at pH 3.67. Sorption of P by Al(OH)3 appears to be an important control on dissolved PO4 concentration in surface waters, unless there is a large excess of PO4. Acidification of the sediment-solution system caused protonation of the sediment surface, thereby increasing the adsorption capacity for SO4. Maximum SO4 adsorption occurred at pH 4.2, below which dissolution of the sediment offset the increasing anion adsorption capacity, and formation of AISO4 + inhibited the increasing SO4 adsorption capacity. This research demonstrates that there are important pH thresholds for anion adsorption in freshwaters (en)
Title	Amorphous Aluminum Hydroxide Control on Sulfate and Phosphate in Sediment-Solution Systems Amorphous Aluminum Hydroxide Control on Sulfate and Phosphate in Sediment-Solution Systems (en)
skos:prefLabel	Amorphous Aluminum Hydroxide Control on Sulfate and Phosphate in Sediment-Solution Systems Amorphous Aluminum Hydroxide Control on Sulfate and Phosphate in Sediment-Solution Systems (en)
skos:notation	RIV/67985831:_____/09:00326225!RIV13-AV0-67985831
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(ME 840), Z(AV0Z30130516), Z(MZP0002579801)
http://linked.open...iv/cisloPeriodika	1-4
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Rohovec, Jan
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	Geologický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	302651
http://linked.open...ai/riv/idVysledku	RIV/67985831:_____/09:00326225
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	adsorption; oligotrophy; Al precipitates; anions; acidification; alkalization (en)
http://linked.open.../riv/klicoveSlovo	adsorption anions oligotrophy acidification Al precipitates alkalization
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[CD90FCD870B6]
http://linked.open...i/riv/nazevZdroje	Water, Air and Soil Pollution
http://linked.open...in/vavai/riv/obor	DD
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	http://linked.opendata.cz/resource/domain/vavai/projekt/ME%20840
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	201
http://linked.open...iv/tvurceVysledku	Fernandez, I. J. Norton, S. A. Rohovec, Jan Navrátil, T. Amirbahman, A.
http://linked.open...ain/vavai/riv/wos	000266928600009
http://linked.open...n/vavai/riv/zamer	Zemský systém v průsečíku geologických procesů, vývoje života, klimatických a antropogenních vlivů Geosciences for the Society of the 21st Century: from regional research to geological hazards and global changes.
issn	0049-6979
number of pages	12 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s11270-008-9929-z

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