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@BOOK{Chiriki:136200,
      author       = {Chiriki, Suresh},
      title        = {{D}isposal strategy of proton irradiated mercury from high
                      power spallation sources},
      volume       = {67},
      school       = {RWTH Aachen},
      type         = {Dr.},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {PreJuSER-136200},
      isbn         = {978-3-89336-632-3},
      series       = {Schriften des Forschungszentrums Jülich. Reihe Energie und
                      Umwelt / Energy und Environment},
      pages        = {XIV, 124 S.},
      year         = {2010},
      note         = {Record converted from JUWEL: 18.07.2013; RWTH Aachen,
                      Diss., 2010},
      abstract     = {Large spallation sources are intended to be constructed in
                      Europe (EURISOL: nuclear physics research facility and ESS:
                      European Spallation Source). These facilities would
                      accumulate more than 20 metric tons of irradiated mercury in
                      the target, which has to be treated as highly radioactive
                      and chemo-toxic waste. Liquid waste cannot be tolerated in
                      European repositories. As part of this work on
                      safety/decommissioning of high-power spallation sources, our
                      investigations were focused mainly to study experimentally
                      and theoretically the solidification of liquid mercury waste
                      (selection of an adequate solid mercury form and of an
                      immobilization matrix, chemical engineering process studies
                      on solidification/stabilization and on encapsulating in a
                      matrix). Based on experimental results and supported by
                      literature Hg-chalcogens (HgS, HgSe) will be more stable in
                      repositories than amalgams. Our irradiation experimental
                      studies on mercury waste revealed that mercury sulfide is a
                      reasonable solid for disposal and shows larger stability in
                      possible accidents with water ingress in a repository.
                      Additionally immobilization of mercury in a cement matrix
                      and polysiloxane matrix were tested. HgS formation from
                      liquid target mercury by a wet process is identified as a
                      suitable formation procedure. These investigations reveal
                      that an almost $99.9\%$ elementary Hg conversion can be
                      achieved and that wet process can be reasonably handled
                      under hot cell conditions.},
      cin          = {IEF-6},
      ddc          = {500},
      cid          = {I:(DE-Juel1)VDB814},
      shelfmark    = {UXV - Radioactive waste disposal - interim and final / UXV
                      - Entsorgung von radioaktiven Abfällen (Zwischen- und
                      Endlagerung)},
      typ          = {PUB:(DE-HGF)3},
      url          = {https://juser.fz-juelich.de/record/136200},
}