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APPLICATION OF TECHNICAL STONE WASTE IN PHOSPHATE, ARSENATE AND CHROMATE REMOVAL FROM CONTAMINATED WATER
Abstract
Powdered waste sludge from the production of technical stone (TSW), produced by theTechniStone® Company (Hradec Kralove, Czech Republic), was surface modified withFe2+ and Mn2+ inorganic salts and then testified as a potential adsorbent ofenvironmentally important oxyanions (phosphate PO43-, arsenate AsO43- and chromateCrO42-) from contaminated waters. The surface modification in principle consisted increating a thin layer of hydrated Fe/Mn ions in reactive form on the TSW surface.Thanks to the change of the surface charge (pHZPC), the newly formed Fe/Mn activesurface sites were then appropriate for a selective anion adsorption. The batchadsorption experiments were performed with 0.3 mmol.L-1 model solutions of PO43-,AsO43- and CrO42- and the sorbent (TSW, TSWFe and TSWMn) fraction of ?0.1 mm, atthe laboratory temperature (20 °C). The obtained data were fitted by the Langmuirmodel. The adsorption of oxyanions on the original TSW was completely ineffective,with the yield of ?2% for AsO43- and a maximum of 8% for CrO42-. Even the negativegradient of PO43- adsorption on TSW was related to the simultaneous leaching of PO43-primarily contained in the original material. The Fe or Mn surface modificationincreased the adsorption efficiency to >99% for the PO43- adsorption, to 99% for theAsO43- adsorption, and to 82–86% for CrO42- adsorption. While the use of TSWFeindicated the highest adsorption capacity and yield for all tested oxyanions, theLangmuir parameters revealed the adsorption on TSWMn as more robust, with orders ofmagnitude higher adsorption constants (KL) and a lower Gibbs energy consumption(?G). The selectivity of the oxyanion adsorption to TSWFe and TSWMn decreased in theorder: PO43- > AsO43- > CrO42-.
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References11
TechniStone®, s.r.o., Annual Report 2020, Hradec Králové, Czech Republic (in Czech).
Mousavi H.Z., Seyedi S.R., Kinetic and equilibrium studies on the removal of Pb(II) from aqueous solution using nettle ash, J. Chil. Chem. Soc., vol. 55/issue 3, pp 307-311, 2010.
.Badescu I.S., Bulgariu D., Ahmad I., Bulgariu L., Valorisation possibilities of exhausted biosorbents loaded with metal ions – A review, J. Environ. Management, vol. 224, pp. 288-297, 2018.
Fiol N., Villaescusa I., Determination of sorbent point zero charge: usefulness in sorption studies, Environ. Chem. Lett., vol. 7, pp. 79-84, 2009.
Sherman D.M., Randall S.R., Surface complexation of arsenic (V) to iron (III) (hydr)oxides: Structural mechanism from ab initio molecular geometries and EXAFS spectroscopy, Geochimica et Cosmochimica. Acta, vol. 67/issue 22, pp. 4223-4230, 2003.
Dousova B., Buzek F., Herzogova L., Machovic V., Lhotka M., Effect of organic matter on arsenic (V) and antimony (V) adsorption in soils, European Journal of Soil Science, vol. 66, pp. 74-82, 2015.
Doušová B., Grygar T., Martaus A., Fuitová L., Koloušek D., Machovič V., Sorption of AsV on aluminosilicates treated with FeII nanoparticles, Journal of Colloid and Interface Science, vol. 302, pp. 424-431, 2006.
Bonin D, Method of removing arsenic species from an aqueous medium using modified zeolite minerals, US Patent no. 6,042,731, 2000.
Herzogová L., Adsorption of Se oxyanions on modified clays, Diploma Thesis UCT Prague, CR, pp. 40, 2007 (in Czech).
Misak N.Z., Langmuir isotherm and its application in ion-exchange reactions, Reactive Polymers, vol. 21, pp. 53-64, 1993.
Johnston Ch.P., Chrysochoou M., Mechanisms of chromate adsorption on boehmite, J. Hazard. Mater., vol. 281, pp. 56-63, 2015.
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