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Processing of eggshell biomaterial by electric discharge assisted mechanical milling (EDAMM) and high energy milling (HEM) techniques

Journal Article


Abstract


  • In this study, hen eggshell (ES) biomaterial was treated by two mechanochemical methods. Here we show that using of low-current

    high-voltage electrical impulses during electrical discharge assisted mechanical milling (EDAMM) or high-energy milling (HEM) are proper tools for ES transformation to materials suitable for the further applications. The decomposition of calcite CaCO3 (the main component of ES) into lime CaO (EDAMM treatment) or calcite-aragonite transformation (HEM treatment) were documented by X-ray diffractometry. The applied techniques bring about solid state transformation, high degree of calcite amorphization, and enhancement of specific surface area of ES samples. As examples of using the transformed ES the uptake of cadmium ions during sorption experiments and the dechlorination of polyvinyl chloride are given. In both cases, the technologically accepted recoveries and kinetics have been obtained.

Authors


  •   Balaz, P (external author)
  •   Calka, Andrzej
  •   Zorkovska, A (external author)
  •   Balaz, M (external author)

Publication Date


  • 2013

Citation


  • Balaz, P., Calka, A., Zorkovska, A. & Balaz, M. 2013, 'Processing of eggshell biomaterial by electric discharge assisted mechanical milling (EDAMM) and high energy milling (HEM) techniques', Materials and Manufacturing Processes, vol. 28, pp. 343-347.

Scopus Eid


  • 2-s2.0-84876160195

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/546

Number Of Pages


  • 4

Start Page


  • 343

End Page


  • 347

Volume


  • 28

Place Of Publication


  • http:\www.tandfonline.com/loi/lmmp20

Abstract


  • In this study, hen eggshell (ES) biomaterial was treated by two mechanochemical methods. Here we show that using of low-current

    high-voltage electrical impulses during electrical discharge assisted mechanical milling (EDAMM) or high-energy milling (HEM) are proper tools for ES transformation to materials suitable for the further applications. The decomposition of calcite CaCO3 (the main component of ES) into lime CaO (EDAMM treatment) or calcite-aragonite transformation (HEM treatment) were documented by X-ray diffractometry. The applied techniques bring about solid state transformation, high degree of calcite amorphization, and enhancement of specific surface area of ES samples. As examples of using the transformed ES the uptake of cadmium ions during sorption experiments and the dechlorination of polyvinyl chloride are given. In both cases, the technologically accepted recoveries and kinetics have been obtained.

Authors


  •   Balaz, P (external author)
  •   Calka, Andrzej
  •   Zorkovska, A (external author)
  •   Balaz, M (external author)

Publication Date


  • 2013

Citation


  • Balaz, P., Calka, A., Zorkovska, A. & Balaz, M. 2013, 'Processing of eggshell biomaterial by electric discharge assisted mechanical milling (EDAMM) and high energy milling (HEM) techniques', Materials and Manufacturing Processes, vol. 28, pp. 343-347.

Scopus Eid


  • 2-s2.0-84876160195

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/546

Number Of Pages


  • 4

Start Page


  • 343

End Page


  • 347

Volume


  • 28

Place Of Publication


  • http:\www.tandfonline.com/loi/lmmp20