Stability evaluations of copper ethyl xanthate and copper butyl xanthate in an acid solution

Yi Kuo Chang, Juu En Chang, Tzong Tzeng Lin, Yu Ming Hsu

Research output: Contribution to journalConference article

Abstract

In this study, two precipitates, copper ethyl xanthate (Cu-EtX) and copper n-butyl xanthate (Cu-BuX), were formed from two xanthate processes for metal [Cu(II)] removal from aqueous systems. The performances of both xanthate processes showed that they were capable of meeting effluent disposal standard of Taiwan. Stability characteristics of Cu-EtX and Cu-BuX in acid solutions were discussed using semi-dynamic leach test (SDLT), X-ray powder diffraction (XRD) measurements and UV-VIS spectroscopic methods. The results of SDLT after 60-day periods of 1N acetic acid (HAc) extractions points out that the cumulative leaching of copper was 0.82% and 0.004% of the total copper contained in Cu-EtX and Cu-BuX, respectively. The investigation of crystallinity showed as XRD patterns from Cu-EtX and Cu-BuX indicated that none of new peaks appeared during 60-day periods of extractions. Results of UV-VIS spectra showed that only few Cu-EtX decomposed to dixanthogen and carbon disulfide, and few Cu-BuX decomposed to carbon disulfide. Thus. it was assured that chemical stability of Cu-EtX and Cu-BuX in 1N HAc solution satisfied environmental requirements.

Original languageEnglish
Pages (from-to)219-226
Number of pages8
JournalProceedings of the International Conference on Solid Waste Technology and Management
Publication statusPublished - 1999 Dec 1
EventProceedings of the International Conference on Solid Waste Technology and Mangement - Philadelphia, PA, USA
Duration: 1999 Dec 121999 Dec 15

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copper
Copper
Acids
acid
Carbon disulfide
X ray powder diffraction
X-ray diffraction
evaluation
Chemical stability
carbon
crystallinity
Waste disposal
Acetic acid
acetic acid
Diffraction patterns
Leaching
Precipitates
Effluents
leaching
effluent

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Waste Management and Disposal

Cite this

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title = "Stability evaluations of copper ethyl xanthate and copper butyl xanthate in an acid solution",
abstract = "In this study, two precipitates, copper ethyl xanthate (Cu-EtX) and copper n-butyl xanthate (Cu-BuX), were formed from two xanthate processes for metal [Cu(II)] removal from aqueous systems. The performances of both xanthate processes showed that they were capable of meeting effluent disposal standard of Taiwan. Stability characteristics of Cu-EtX and Cu-BuX in acid solutions were discussed using semi-dynamic leach test (SDLT), X-ray powder diffraction (XRD) measurements and UV-VIS spectroscopic methods. The results of SDLT after 60-day periods of 1N acetic acid (HAc) extractions points out that the cumulative leaching of copper was 0.82{\%} and 0.004{\%} of the total copper contained in Cu-EtX and Cu-BuX, respectively. The investigation of crystallinity showed as XRD patterns from Cu-EtX and Cu-BuX indicated that none of new peaks appeared during 60-day periods of extractions. Results of UV-VIS spectra showed that only few Cu-EtX decomposed to dixanthogen and carbon disulfide, and few Cu-BuX decomposed to carbon disulfide. Thus. it was assured that chemical stability of Cu-EtX and Cu-BuX in 1N HAc solution satisfied environmental requirements.",
author = "Chang, {Yi Kuo} and Chang, {Juu En} and Lin, {Tzong Tzeng} and Hsu, {Yu Ming}",
year = "1999",
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Stability evaluations of copper ethyl xanthate and copper butyl xanthate in an acid solution. / Chang, Yi Kuo; Chang, Juu En; Lin, Tzong Tzeng; Hsu, Yu Ming.

In: Proceedings of the International Conference on Solid Waste Technology and Management, 01.12.1999, p. 219-226.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Stability evaluations of copper ethyl xanthate and copper butyl xanthate in an acid solution

AU - Chang, Yi Kuo

AU - Chang, Juu En

AU - Lin, Tzong Tzeng

AU - Hsu, Yu Ming

PY - 1999/12/1

Y1 - 1999/12/1

N2 - In this study, two precipitates, copper ethyl xanthate (Cu-EtX) and copper n-butyl xanthate (Cu-BuX), were formed from two xanthate processes for metal [Cu(II)] removal from aqueous systems. The performances of both xanthate processes showed that they were capable of meeting effluent disposal standard of Taiwan. Stability characteristics of Cu-EtX and Cu-BuX in acid solutions were discussed using semi-dynamic leach test (SDLT), X-ray powder diffraction (XRD) measurements and UV-VIS spectroscopic methods. The results of SDLT after 60-day periods of 1N acetic acid (HAc) extractions points out that the cumulative leaching of copper was 0.82% and 0.004% of the total copper contained in Cu-EtX and Cu-BuX, respectively. The investigation of crystallinity showed as XRD patterns from Cu-EtX and Cu-BuX indicated that none of new peaks appeared during 60-day periods of extractions. Results of UV-VIS spectra showed that only few Cu-EtX decomposed to dixanthogen and carbon disulfide, and few Cu-BuX decomposed to carbon disulfide. Thus. it was assured that chemical stability of Cu-EtX and Cu-BuX in 1N HAc solution satisfied environmental requirements.

AB - In this study, two precipitates, copper ethyl xanthate (Cu-EtX) and copper n-butyl xanthate (Cu-BuX), were formed from two xanthate processes for metal [Cu(II)] removal from aqueous systems. The performances of both xanthate processes showed that they were capable of meeting effluent disposal standard of Taiwan. Stability characteristics of Cu-EtX and Cu-BuX in acid solutions were discussed using semi-dynamic leach test (SDLT), X-ray powder diffraction (XRD) measurements and UV-VIS spectroscopic methods. The results of SDLT after 60-day periods of 1N acetic acid (HAc) extractions points out that the cumulative leaching of copper was 0.82% and 0.004% of the total copper contained in Cu-EtX and Cu-BuX, respectively. The investigation of crystallinity showed as XRD patterns from Cu-EtX and Cu-BuX indicated that none of new peaks appeared during 60-day periods of extractions. Results of UV-VIS spectra showed that only few Cu-EtX decomposed to dixanthogen and carbon disulfide, and few Cu-BuX decomposed to carbon disulfide. Thus. it was assured that chemical stability of Cu-EtX and Cu-BuX in 1N HAc solution satisfied environmental requirements.

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