Effective utilization of waste: Development of CH4 dry reforming catalysts from spent nickel metal hydride battery for resource recovery

T. Kanamori, R. Hayashi, M. Matsuda, M. Miyake

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The resource recovery of nickel metal from the spent nickel metal hydride (Ni-MH) battery was investigated by using the CH4 dry reforming, aiming at reusing it as a raw material of the Ni-MH battery. From the results, a compound identified as a single phase of NiO by XRD was successfully prepared from the spent Ni-MH battery by a series of chemical processes using HCl and NH3 aq. solutions followed by calcinations. The resulting NiO exhibited excellent CH4 conversion in the CH4 dry reforming, i.e., the CH4 conversion higher than 96% continued for 50 h when the flow rates of injection gases were controlled at CH 4/CO2/Ar = 10:10:80 ml·min-1. Although the XRD pattern revealed the reduction of NiO to Ni0 and the deposition of carbon after the CH4 dry reforming, the deposition of carbon could be suppressed by changing the injection gas ratio. The resource recovery of nickel metal was, therefore, concluded to be possible through the CH4 dry reforming over NiO prepared from the spent Ni-MH battery.

Original languageEnglish
Title of host publicationWaste Management and the Environment III
PublisherWITPress
Pages217-224
Number of pages8
Volume92
ISBN (Print)1845641736, 9781845641733
DOIs
Publication statusPublished - Jan 1 2006
Event3rd International Conference on Waste Management and the Environment, WASTE MANAGEMENT 2006, WM06 - Malta, Malta
Duration: Jun 21 2006Jun 23 2006

Other

Other3rd International Conference on Waste Management and the Environment, WASTE MANAGEMENT 2006, WM06
CountryMalta
CityMalta
Period6/21/066/23/06

Keywords

  • Nickel metal
  • Nickel metal hydride secondary battery
  • Nickel-based catalyst
  • Resource recovery

ASJC Scopus subject areas

  • Environmental Science(all)

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    Kanamori, T., Hayashi, R., Matsuda, M., & Miyake, M. (2006). Effective utilization of waste: Development of CH4 dry reforming catalysts from spent nickel metal hydride battery for resource recovery. In Waste Management and the Environment III (Vol. 92, pp. 217-224). WITPress. https://doi.org/10.2495/WM060241