Oxidation of printed circuit board wastes in supercritical water

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

研究成果: Article同行評審

44 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
34
發行號17
DOIs
出版狀態Published - 2000 十二月

All Science Journal Classification (ASJC) codes

  • Ecological Modelling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

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