Effects of particle sizes of rock phosphate on immobilizing heavy metals in lead zinc mine soils

Phosphate-induced immobilization is recognized as one of effective in situ remediation methods for heavy metal contaminated soils. Phosphate-based minerals that adsorb, chelate, or complex heavy metals in soil were greatly concerned as effective heavy metals immobilizing materials. Effects of partic...

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Autores principales:	Zhao,Z., Jiang,G., Mao,R.
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2014
Materias:	Particle size rock phosphates (RP) immobilization heavy metals Pb-Zn mine soil
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000200001
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spelling	oai:scielo:S0718-951620140002000012014-07-30Effects of particle sizes of rock phosphate on immobilizing heavy metals in lead zinc mine soilsZhao,Z.Jiang,G.Mao,R. Particle size rock phosphates (RP) immobilization heavy metals Pb-Zn mine soil Phosphate-induced immobilization is recognized as one of effective in situ remediation methods for heavy metal contaminated soils. Phosphate-based minerals that adsorb, chelate, or complex heavy metals in soil were greatly concerned as effective heavy metals immobilizing materials. Effects of particle sizes of rock phosphate on immobilizing heavy metals in Pb-Zn mine soils by a greenhouse experiment was conducted. Rock phosphate was added to a Pb-Zn mine soil with four different particle sizes, D97<101.43 µm (UP), D97<71.12 µm (P1), D97<36.83 ìm (P2) and D97< 4.26 µm (P3) (the diameters of 97% of the particles were less than 4.26 µm.), and 2 rates (2.5% and 5%). Lolium prenne, L. were grown in the treated soils. Compared to the control, addition of rock phosphate (RP) decreased metal contents in both roots and shoots significantly. Pb contents in shoots decreased by 19.59%-37.80% by different particle sizes at the rate of 5%, reaching lowest level at lowest particle size P3. Zn contents in shoots decreased by 13.47% -13.75 %, Cu in roots was decreased by 18.46%-67.98% and in shoots by 16.82%-32.61%, and Cd in roots decreased by 31.03%-74.23%. The results indicated that, RP can reduce the phytoavailability of Pb, Zn, Cu and Cd in soil significantly by immobilization and the effects strengthened with the decrease of particle size and increasing the rate of addition.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.14 n.2 20142014-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000200001en10.4067/S0718-95162014005000021
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Particle size rock phosphates (RP) immobilization heavy metals Pb-Zn mine soil
spellingShingle	Particle size rock phosphates (RP) immobilization heavy metals Pb-Zn mine soil Zhao,Z. Jiang,G. Mao,R. Effects of particle sizes of rock phosphate on immobilizing heavy metals in lead zinc mine soils
description	Phosphate-induced immobilization is recognized as one of effective in situ remediation methods for heavy metal contaminated soils. Phosphate-based minerals that adsorb, chelate, or complex heavy metals in soil were greatly concerned as effective heavy metals immobilizing materials. Effects of particle sizes of rock phosphate on immobilizing heavy metals in Pb-Zn mine soils by a greenhouse experiment was conducted. Rock phosphate was added to a Pb-Zn mine soil with four different particle sizes, D97<101.43 µm (UP), D97<71.12 µm (P1), D97<36.83 ìm (P2) and D97< 4.26 µm (P3) (the diameters of 97% of the particles were less than 4.26 µm.), and 2 rates (2.5% and 5%). Lolium prenne, L. were grown in the treated soils. Compared to the control, addition of rock phosphate (RP) decreased metal contents in both roots and shoots significantly. Pb contents in shoots decreased by 19.59%-37.80% by different particle sizes at the rate of 5%, reaching lowest level at lowest particle size P3. Zn contents in shoots decreased by 13.47% -13.75 %, Cu in roots was decreased by 18.46%-67.98% and in shoots by 16.82%-32.61%, and Cd in roots decreased by 31.03%-74.23%. The results indicated that, RP can reduce the phytoavailability of Pb, Zn, Cu and Cd in soil significantly by immobilization and the effects strengthened with the decrease of particle size and increasing the rate of addition.
author	Zhao,Z. Jiang,G. Mao,R.
author_facet	Zhao,Z. Jiang,G. Mao,R.
author_sort	Zhao,Z.
title	Effects of particle sizes of rock phosphate on immobilizing heavy metals in lead zinc mine soils
title_short	Effects of particle sizes of rock phosphate on immobilizing heavy metals in lead zinc mine soils
title_full	Effects of particle sizes of rock phosphate on immobilizing heavy metals in lead zinc mine soils
title_fullStr	Effects of particle sizes of rock phosphate on immobilizing heavy metals in lead zinc mine soils
title_full_unstemmed	Effects of particle sizes of rock phosphate on immobilizing heavy metals in lead zinc mine soils
title_sort	effects of particle sizes of rock phosphate on immobilizing heavy metals in lead zinc mine soils
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000200001
work_keys_str_mv	AT zhaoz effectsofparticlesizesofrockphosphateonimmobilizingheavymetalsinleadzincminesoils AT jiangg effectsofparticlesizesofrockphosphateonimmobilizingheavymetalsinleadzincminesoils AT maor effectsofparticlesizesofrockphosphateonimmobilizingheavymetalsinleadzincminesoils
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Effects of particle sizes of rock phosphate on immobilizing heavy metals in lead zinc mine soils

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