Effect of adsorbents on the leachability of cement bonded electroplating wastes

F. D. Tamás; L. Csetényi; J. Tritthart

doi:10.1016/0008-8846(92)90082-7

Effect of adsorbents on the leachability of cement bonded electroplating wastes

F. D. Tamás, L. Csetényi, J. Tritthart

Civil Engineering

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

This study is aimed at the determination of pore solution composition of hardened cement pastes prepared with the addition of chromium-, cadmium- and nickel-salts. Due to the high pH-value of the pore water of cement paste, cadmium and nickel were transformed into insoluble hydroxides and precipitated practically quantitatively. Chromium, added as Na₂Cr₂O₇.2 H₂O, which is soluble in a highly alkaline medium, was partly bound. It is not clear yet, whether chromium was adsorbed and/or incorporated in hydration products. The use of clinker instead of cement caused a more intensive bond. Adsorbents (silica fume, fly ash and activated carbon), with the exception of fly ash did not improve this bonding.

Original language	English
Pages (from-to)	399-404
Number of pages	6
Journal	Cement and Concrete Research
Volume	22
Issue number	2-3
DOIs	https://doi.org/10.1016/0008-8846(92)90082-7
Publication status	Published - 1992

ASJC Scopus subject areas

Building and Construction
General Materials Science

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10.1016/0008-8846(92)90082-7

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abstract = "This study is aimed at the determination of pore solution composition of hardened cement pastes prepared with the addition of chromium-, cadmium- and nickel-salts. Due to the high pH-value of the pore water of cement paste, cadmium and nickel were transformed into insoluble hydroxides and precipitated practically quantitatively. Chromium, added as Na2Cr2O7.2 H2O, which is soluble in a highly alkaline medium, was partly bound. It is not clear yet, whether chromium was adsorbed and/or incorporated in hydration products. The use of clinker instead of cement caused a more intensive bond. Adsorbents (silica fume, fly ash and activated carbon), with the exception of fly ash did not improve this bonding.",

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AU - Tamás, F. D.

AU - Csetényi, L.

AU - Tritthart, J.

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Y1 - 1992

N2 - This study is aimed at the determination of pore solution composition of hardened cement pastes prepared with the addition of chromium-, cadmium- and nickel-salts. Due to the high pH-value of the pore water of cement paste, cadmium and nickel were transformed into insoluble hydroxides and precipitated practically quantitatively. Chromium, added as Na2Cr2O7.2 H2O, which is soluble in a highly alkaline medium, was partly bound. It is not clear yet, whether chromium was adsorbed and/or incorporated in hydration products. The use of clinker instead of cement caused a more intensive bond. Adsorbents (silica fume, fly ash and activated carbon), with the exception of fly ash did not improve this bonding.

AB - This study is aimed at the determination of pore solution composition of hardened cement pastes prepared with the addition of chromium-, cadmium- and nickel-salts. Due to the high pH-value of the pore water of cement paste, cadmium and nickel were transformed into insoluble hydroxides and precipitated practically quantitatively. Chromium, added as Na2Cr2O7.2 H2O, which is soluble in a highly alkaline medium, was partly bound. It is not clear yet, whether chromium was adsorbed and/or incorporated in hydration products. The use of clinker instead of cement caused a more intensive bond. Adsorbents (silica fume, fly ash and activated carbon), with the exception of fly ash did not improve this bonding.

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JO - Cement and Concrete Research

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ER -

Effect of adsorbents on the leachability of cement bonded electroplating wastes

Abstract

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