Oxidation of printed circuit board wastes in supercritical water

Yi Chi Chien; H. Paul Wang; Kuen Song Lin; Y. W. Yang

doi:10.1016/S0043-1354(00)00184-6

Oxidation of printed circuit board wastes in supercritical water

Yi Chi Chien, H. Paul Wang, Kuen Song Lin, Y. W. Yang

環境工程學系

研究成果: Article › 同行評審

53 引文斯高帕斯（Scopus）

摘要

A feasibility study for oxidation of printed circuit board wastes with NaOH in supercritical water has been investigated. Experimentally, Br species in the printed circuit board resin was abstracted by sodium cations and the destruction efficiency of the waste was enhanced in the supercritical water oxidation (SCWO) process. By X-ray diffraction (XRD) spectroscopy, Cu₂O, CuO, and Cu(OH)₂ were found in the SWCO solid residue of the printed circuit board wastes. The extended X-ray absorption fine structural (EXAFS) spectra indicated that the bond distance of Cu-O in the residue was 1.87 Å with a coordination number of 2.61. Since the Cu-Br species was not observed by XRD and EXAFS spectroscopies, one may eliminate the possibility that the copper was involved in the abstraction of bromine species from the resin matrix in the SCWO process. (C) 2000 Elsevier Science Ltd.

原文	English
頁（從 - 到）	4279-4283
頁數	5
期刊	Water Research
卷	34
發行號	17
DOIs	https://doi.org/10.1016/S0043-1354(00)00184-6
出版狀態	Published - 2000 12月

All Science Journal Classification (ASJC) codes

生態建模
水科學與技術
廢物管理和處置
污染

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10.1016/S0043-1354(00)00184-6

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title = "Oxidation of printed circuit board wastes in supercritical water",

abstract = "A feasibility study for oxidation of printed circuit board wastes with NaOH in supercritical water has been investigated. Experimentally, Br species in the printed circuit board resin was abstracted by sodium cations and the destruction efficiency of the waste was enhanced in the supercritical water oxidation (SCWO) process. By X-ray diffraction (XRD) spectroscopy, Cu2O, CuO, and Cu(OH)2 were found in the SWCO solid residue of the printed circuit board wastes. The extended X-ray absorption fine structural (EXAFS) spectra indicated that the bond distance of Cu-O in the residue was 1.87 {\AA} with a coordination number of 2.61. Since the Cu-Br species was not observed by XRD and EXAFS spectroscopies, one may eliminate the possibility that the copper was involved in the abstraction of bromine species from the resin matrix in the SCWO process. (C) 2000 Elsevier Science Ltd.",

author = "Chien, {Yi Chi} and Wang, {H. Paul} and Lin, {Kuen Song} and Yang, {Y. W.}",

note = "Funding Information: The financial support of the National Science Council, Taiwan is gratefully acknowledged by the authors.",

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T1 - Oxidation of printed circuit board wastes in supercritical water

AU - Chien, Yi Chi

AU - Wang, H. Paul

AU - Lin, Kuen Song

AU - Yang, Y. W.

N1 - Funding Information: The financial support of the National Science Council, Taiwan is gratefully acknowledged by the authors.

PY - 2000/12

Y1 - 2000/12

N2 - A feasibility study for oxidation of printed circuit board wastes with NaOH in supercritical water has been investigated. Experimentally, Br species in the printed circuit board resin was abstracted by sodium cations and the destruction efficiency of the waste was enhanced in the supercritical water oxidation (SCWO) process. By X-ray diffraction (XRD) spectroscopy, Cu2O, CuO, and Cu(OH)2 were found in the SWCO solid residue of the printed circuit board wastes. The extended X-ray absorption fine structural (EXAFS) spectra indicated that the bond distance of Cu-O in the residue was 1.87 Å with a coordination number of 2.61. Since the Cu-Br species was not observed by XRD and EXAFS spectroscopies, one may eliminate the possibility that the copper was involved in the abstraction of bromine species from the resin matrix in the SCWO process. (C) 2000 Elsevier Science Ltd.

AB - A feasibility study for oxidation of printed circuit board wastes with NaOH in supercritical water has been investigated. Experimentally, Br species in the printed circuit board resin was abstracted by sodium cations and the destruction efficiency of the waste was enhanced in the supercritical water oxidation (SCWO) process. By X-ray diffraction (XRD) spectroscopy, Cu2O, CuO, and Cu(OH)2 were found in the SWCO solid residue of the printed circuit board wastes. The extended X-ray absorption fine structural (EXAFS) spectra indicated that the bond distance of Cu-O in the residue was 1.87 Å with a coordination number of 2.61. Since the Cu-Br species was not observed by XRD and EXAFS spectroscopies, one may eliminate the possibility that the copper was involved in the abstraction of bromine species from the resin matrix in the SCWO process. (C) 2000 Elsevier Science Ltd.

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ER -

Oxidation of printed circuit board wastes in supercritical water

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