Recycling of Cerium and Lanthanum from Glass Polishing Sludge

• Autorzy: Lee Chi-En Hung , Lo Yu-Chien , Sandagdorj Nyamdorj , Gankhuyag Enkhsaikhan , Popuri Srinivasa Rao , Hung Chi-En

Identyfikatory

DOI

10.2478/pjct-2019-0035

• Języki publikacji: EN

Abstrakty

EN

To examine the efficiency of La and Ce recycling processes from the sludge, two major methods were used, namely leaching and precipitation. The findings suggest that 12% of La and 24.2% of Ce were contained in the sludge. The sludge was leached in an optimum condition of 6N HCl at a temperature of 70°C with a 3g/50 mL solid/liquid ratio for 3 h to obtain a 100% leaching recovery of La and Ce. After pH adjustment of the obtained La and Ce optimum leaching solution to 6 with NH4OH and a simultaneous addition of H₂O₂ in a ratio of 1:1, Ce precipitated out with 65.9% recovery. On the other hand, La was not precipitated. The results obtained in this study reveal that leaching and pH adjustment method could be used to recover the valuable REE of La and Ce from glass polishing sludge in order to reach the goals of resource recycling.

Słowa kluczowe

EN

Cerium; Lanthanum; waste; Sludge; Leaching; recycling

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2019
• Tom: Vol. 21, nr 4
• Strony: 26--30
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Lee Chi-En Hung

• Da-Yeh University, Department of Environmental Engineering, Changhua, Taiwan, 515 R.O.C.

autor

Lo Yu-Chien

• Da-Yeh University, Department of Environmental Engineering, Changhua, Taiwan, 515 R.O.C.

autor

Sandagdorj Nyamdorj

• Da-Yeh University, Department of Environmental Engineering, Changhua, Taiwan, 515 R.O.C.

autor

Gankhuyag Enkhsaikhan

• Da-Yeh University, Department of Environmental Engineering, Changhua, Taiwan, 515 R.O.C.

autor

Popuri Srinivasa Rao

• The University of the West Indies, Department of Biological and Chemical Science, Cave Hill Campus, Barbados-1100

autor

Hung Chi-En

• Da-Yeh University, Department of Environmental Engineering, Changhua, Taiwan, 515 R.O.C.

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