Extraction of heavy metals from fly ash and sand with ligands and supercritical carbon dioxide
C. Kersch*, M. J.E. Van Roosmalen, G. F. Woerlee, G. J. Witkamp
This project further develops supercritical fluid extraction as an industrial remediation process for soil and other heavy-metal-contaminated solid materials. In this study, divalent metals such as Zn2+, Cu2+, Pb2+, Cd2+, and Cr3+ are removed from sand and fly ash using CO2. When the solvating power of supercritical CO2 is combined with the metal ion complexing power and selectivity of organic ligands, a clean alternative to conventional liquid-liquid and liquid-solid extraction is obtained. Extraction technologies are required, which not only remove the mobile or total fraction of metals but also maintain the matrix's morphology and structure. In particular, the reuse of fly ash as construction or landfill material becomes possible with the application of supercritical fluid technology. In a study with spiked sand samples, the effect of pressure, the humidity of the contaminated material, and the use of methanol as the entrainer in CO2 on the extraction efficiency is investigated. Influences of the type of complexing ligands is studied with both fly ash and sand samples. It is shown that the use of methanol as the entrainer and the humidity have strong effects on the metal extraction.
Industrial and Engineering Chemistry Research
https://doi.org/10.1021/ie0002226
Chemical Engineering(all)
10.1021/ie0002226
Dive into the research topics of 'Extraction of heavy metals from fly ash and sand with ligands and supercritical carbon dioxide'. Together they form a unique fingerprint.
Carbon Dioxide Chemistry 100%
Ash Chemistry 66%
Sand Material Science 66%
Supercritical Chemistry 50%
Ligand Chemistry 50%
Extraction Engineering 50%
Heavy Metal Chemistry 33%
Liquid Chemistry 33%
Kersch, C., Van Roosmalen, M. J. E., Woerlee, G. F., & Witkamp, G. J. (2000). Extraction of heavy metals from fly ash and sand with ligands and supercritical carbon dioxide. Industrial and Engineering Chemistry Research, 39(12), 4670-4672. https://doi.org/10.1021/ie0002226
Kersch, C. ; Van Roosmalen, M. J.E. ; Woerlee, G. F. et al. / Extraction of heavy metals from fly ash and sand with ligands and supercritical carbon dioxide. In: Industrial and Engineering Chemistry Research. 2000 ; Vol. 39, No. 12. pp. 4670-4672.
@article{f76b6ef3f32e4c07bbd16bf21f051e90,
title = "Extraction of heavy metals from fly ash and sand with ligands and supercritical carbon dioxide",
abstract = "This project further develops supercritical fluid extraction as an industrial remediation process for soil and other heavy-metal-contaminated solid materials. In this study, divalent metals such as Zn2+, Cu2+, Pb2+, Cd2+, and Cr3+ are removed from sand and fly ash using CO2. When the solvating power of supercritical CO2 is combined with the metal ion complexing power and selectivity of organic ligands, a clean alternative to conventional liquid-liquid and liquid-solid extraction is obtained. Extraction technologies are required, which not only remove the mobile or total fraction of metals but also maintain the matrix's morphology and structure. In particular, the reuse of fly ash as construction or landfill material becomes possible with the application of supercritical fluid technology. In a study with spiked sand samples, the effect of pressure, the humidity of the contaminated material, and the use of methanol as the entrainer in CO2 on the extraction efficiency is investigated. Influences of the type of complexing ligands is studied with both fly ash and sand samples. It is shown that the use of methanol as the entrainer and the humidity have strong effects on the metal extraction.",
author = "C. Kersch and {Van Roosmalen}, {M. J.E.} and Woerlee, {G. F.} and Witkamp, {G. J.}",
doi = "10.1021/ie0002226",
journal = "Industrial and Engineering Chemistry Research",
Kersch, C, Van Roosmalen, MJE, Woerlee, GF & Witkamp, GJ 2000, 'Extraction of heavy metals from fly ash and sand with ligands and supercritical carbon dioxide', Industrial and Engineering Chemistry Research, vol. 39, no. 12, pp. 4670-4672. https://doi.org/10.1021/ie0002226
Extraction of heavy metals from fly ash and sand with ligands and supercritical carbon dioxide. / Kersch, C.; Van Roosmalen, M. J.E.; Woerlee, G. F. et al.
In: Industrial and Engineering Chemistry Research, Vol. 39, No. 12, 01.01.2000, p. 4670-4672.
T1 - Extraction of heavy metals from fly ash and sand with ligands and supercritical carbon dioxide
AU - Kersch, C.
AU - Van Roosmalen, M. J.E.
AU - Woerlee, G. F.
AU - Witkamp, G. J.
N2 - This project further develops supercritical fluid extraction as an industrial remediation process for soil and other heavy-metal-contaminated solid materials. In this study, divalent metals such as Zn2+, Cu2+, Pb2+, Cd2+, and Cr3+ are removed from sand and fly ash using CO2. When the solvating power of supercritical CO2 is combined with the metal ion complexing power and selectivity of organic ligands, a clean alternative to conventional liquid-liquid and liquid-solid extraction is obtained. Extraction technologies are required, which not only remove the mobile or total fraction of metals but also maintain the matrix's morphology and structure. In particular, the reuse of fly ash as construction or landfill material becomes possible with the application of supercritical fluid technology. In a study with spiked sand samples, the effect of pressure, the humidity of the contaminated material, and the use of methanol as the entrainer in CO2 on the extraction efficiency is investigated. Influences of the type of complexing ligands is studied with both fly ash and sand samples. It is shown that the use of methanol as the entrainer and the humidity have strong effects on the metal extraction.
AB - This project further develops supercritical fluid extraction as an industrial remediation process for soil and other heavy-metal-contaminated solid materials. In this study, divalent metals such as Zn2+, Cu2+, Pb2+, Cd2+, and Cr3+ are removed from sand and fly ash using CO2. When the solvating power of supercritical CO2 is combined with the metal ion complexing power and selectivity of organic ligands, a clean alternative to conventional liquid-liquid and liquid-solid extraction is obtained. Extraction technologies are required, which not only remove the mobile or total fraction of metals but also maintain the matrix's morphology and structure. In particular, the reuse of fly ash as construction or landfill material becomes possible with the application of supercritical fluid technology. In a study with spiked sand samples, the effect of pressure, the humidity of the contaminated material, and the use of methanol as the entrainer in CO2 on the extraction efficiency is investigated. Influences of the type of complexing ligands is studied with both fly ash and sand samples. It is shown that the use of methanol as the entrainer and the humidity have strong effects on the metal extraction.
U2 - 10.1021/ie0002226
DO - 10.1021/ie0002226
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
Kersch C, Van Roosmalen MJE, Woerlee GF, Witkamp GJ. Extraction of heavy metals from fly ash and sand with ligands and supercritical carbon dioxide. Industrial and Engineering Chemistry Research. 2000 Jan 1;39(12):4670-4672. doi: 10.1021/ie0002226