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Hydration of Ordinary Portland Cement in Presence of Lead Sorbed on Ceramic Sorbent
Lead, a highly toxic element, is frequently present in various solid wastes as well as in industrial effluents. Sorption with a low cost sorbent is a simple way of Pb removal from liquid streams, but stabilization of spent sorbent has to be ensured in order to prevent Pb leaching out and possible en...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337679/ https://www.ncbi.nlm.nih.gov/pubmed/30577591 http://dx.doi.org/10.3390/ma12010019 |
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author | Keppert, Martin Scheinherrová, Lenka Jerman, Miloš Doušová, Barbora Kobera, Libor Brus, Jiří Černý, Robert |
author_facet | Keppert, Martin Scheinherrová, Lenka Jerman, Miloš Doušová, Barbora Kobera, Libor Brus, Jiří Černý, Robert |
author_sort | Keppert, Martin |
collection | PubMed |
description | Lead, a highly toxic element, is frequently present in various solid wastes as well as in industrial effluents. Sorption with a low cost sorbent is a simple way of Pb removal from liquid streams, but stabilization of spent sorbent has to be ensured in order to prevent Pb leaching out and possible environmental contamination. In previous research, ceramic sorbent, generated as waste product in brick industry, was tested as sorbent and proved high sorption capacity for lead. Lead was sorbed partially as hydrocerussite and partially as adsorbed surface layer. The Pb leaching from sorbent was very high and thus further immobilization of sorbent was necessary. Lead, as well as other heavy metals, is known as retarder of the hydration process of Ordinary Portland Cement (OPC), used for the immobilization. In this paper, influence of sorbed Pb and PbO, as reference compound, on cement hydration was studied by calorimetry, thermogravimetry and Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy (MAS NMR). The sorbed lead was found to be less detrimental to hydration retardation due to the lower solubility of precipitated hydrocerussite in basic environment compared to PbO, which forms plumbate anion. |
format | Online Article Text |
id | pubmed-6337679 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63376792019-01-22 Hydration of Ordinary Portland Cement in Presence of Lead Sorbed on Ceramic Sorbent Keppert, Martin Scheinherrová, Lenka Jerman, Miloš Doušová, Barbora Kobera, Libor Brus, Jiří Černý, Robert Materials (Basel) Article Lead, a highly toxic element, is frequently present in various solid wastes as well as in industrial effluents. Sorption with a low cost sorbent is a simple way of Pb removal from liquid streams, but stabilization of spent sorbent has to be ensured in order to prevent Pb leaching out and possible environmental contamination. In previous research, ceramic sorbent, generated as waste product in brick industry, was tested as sorbent and proved high sorption capacity for lead. Lead was sorbed partially as hydrocerussite and partially as adsorbed surface layer. The Pb leaching from sorbent was very high and thus further immobilization of sorbent was necessary. Lead, as well as other heavy metals, is known as retarder of the hydration process of Ordinary Portland Cement (OPC), used for the immobilization. In this paper, influence of sorbed Pb and PbO, as reference compound, on cement hydration was studied by calorimetry, thermogravimetry and Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy (MAS NMR). The sorbed lead was found to be less detrimental to hydration retardation due to the lower solubility of precipitated hydrocerussite in basic environment compared to PbO, which forms plumbate anion. MDPI 2018-12-21 /pmc/articles/PMC6337679/ /pubmed/30577591 http://dx.doi.org/10.3390/ma12010019 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Keppert, Martin Scheinherrová, Lenka Jerman, Miloš Doušová, Barbora Kobera, Libor Brus, Jiří Černý, Robert Hydration of Ordinary Portland Cement in Presence of Lead Sorbed on Ceramic Sorbent |
title | Hydration of Ordinary Portland Cement in Presence of Lead Sorbed on Ceramic Sorbent |
title_full | Hydration of Ordinary Portland Cement in Presence of Lead Sorbed on Ceramic Sorbent |
title_fullStr | Hydration of Ordinary Portland Cement in Presence of Lead Sorbed on Ceramic Sorbent |
title_full_unstemmed | Hydration of Ordinary Portland Cement in Presence of Lead Sorbed on Ceramic Sorbent |
title_short | Hydration of Ordinary Portland Cement in Presence of Lead Sorbed on Ceramic Sorbent |
title_sort | hydration of ordinary portland cement in presence of lead sorbed on ceramic sorbent |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337679/ https://www.ncbi.nlm.nih.gov/pubmed/30577591 http://dx.doi.org/10.3390/ma12010019 |
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