Abstract
Metal recovery from aqueous waste streams is an important goal for recycling, agriculture and mining industries. The development of more effective methods of recovery have been of increasing interest. The most common methods for metal recovery include precipitation, electrochemical, ion exchange, flocculation/coagulation and filtration. In the current work, a sono-electrochemical technique employing sound field at megasonic frequency (500 kHz or 1 MHz) in conjunction with electrochemistry is evaluated for enhanced recovery of selected metal ions (palladium, lead and gallium) with different redox potentials from their aqueous solutions. The surface morphology and elemental composition of the metal deposits were characterized using scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The percent recovery was found to depend on the type of metal ion and the megasonic frequency used. Palladium was recovered in its metal form, while lead and gallium were oxidized during or after the recovery process.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 379-387 |
| Number of pages | 9 |
| Journal | Journal of Hazardous Materials |
| Volume | 318 |
| DOIs | |
| State | Published - Nov 15 2016 |
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Keywords
- Electrochemistry
- Megasonic
- Metal recovery
- Sonochemistry
ASJC Scopus subject areas
- Environmental Engineering
- Environmental Chemistry
- Waste Management and Disposal
- Pollution
- Health, Toxicology and Mutagenesis
Cite this
Sono-electrochemical recovery of metal ions from their aqueous solutions. / Dong, Bingfeng; Fishgold, Asher; Lee, Paul; Runge, Keith A; Deymier, Pierre A; Keswani, Manish K.
In: Journal of Hazardous Materials, Vol. 318, 15.11.2016, p. 379-387.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Sono-electrochemical recovery of metal ions from their aqueous solutions
AU - Dong, Bingfeng
AU - Fishgold, Asher
AU - Lee, Paul
AU - Runge, Keith A
AU - Deymier, Pierre A
AU - Keswani, Manish K
PY - 2016/11/15
Y1 - 2016/11/15
N2 - Metal recovery from aqueous waste streams is an important goal for recycling, agriculture and mining industries. The development of more effective methods of recovery have been of increasing interest. The most common methods for metal recovery include precipitation, electrochemical, ion exchange, flocculation/coagulation and filtration. In the current work, a sono-electrochemical technique employing sound field at megasonic frequency (500 kHz or 1 MHz) in conjunction with electrochemistry is evaluated for enhanced recovery of selected metal ions (palladium, lead and gallium) with different redox potentials from their aqueous solutions. The surface morphology and elemental composition of the metal deposits were characterized using scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The percent recovery was found to depend on the type of metal ion and the megasonic frequency used. Palladium was recovered in its metal form, while lead and gallium were oxidized during or after the recovery process.
AB - Metal recovery from aqueous waste streams is an important goal for recycling, agriculture and mining industries. The development of more effective methods of recovery have been of increasing interest. The most common methods for metal recovery include precipitation, electrochemical, ion exchange, flocculation/coagulation and filtration. In the current work, a sono-electrochemical technique employing sound field at megasonic frequency (500 kHz or 1 MHz) in conjunction with electrochemistry is evaluated for enhanced recovery of selected metal ions (palladium, lead and gallium) with different redox potentials from their aqueous solutions. The surface morphology and elemental composition of the metal deposits were characterized using scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The percent recovery was found to depend on the type of metal ion and the megasonic frequency used. Palladium was recovered in its metal form, while lead and gallium were oxidized during or after the recovery process.
KW - Electrochemistry
KW - Megasonic
KW - Metal recovery
KW - Sonochemistry
UR - http://www.scopus.com/inward/record.url?scp=84989834154&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84989834154&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2016.07.007
DO - 10.1016/j.jhazmat.2016.07.007
M3 - Article
AN - SCOPUS:84989834154
VL - 318
SP - 379
EP - 387
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
SN - 0304-3894
ER -