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Hydrogen Chloride and Hydrogen Bromide Sparging Crystallization of Chloride and Bromide Metal Salts.

Public Domain


Details

  • Personal Author:
  • Description:
    This paper describes the effects of hydrogen halide (hcl or hbr) concentration and temperature on the solubility and hydration state of alcl3, cacl2, cocl2, licl, mgcl2, nicl2, kcl, nacl, albr3, cobr2, pbbr2, mnbr2, kbr, and nabr. Saturated aqueous solutions of the chloride and bromide salts were sparged with hcl and hbr gas, respectively, until acid saturation was reached. All salts except cobr2 and mnbr2 were sparged at 20 deg, 40 deg, and 60 deg c; cobr2 and mnbr2 were sparged only at 20 deg c. Increased acid concentration caused the salts to crystallize out because of the common ion effect for all investigated halides except pbbr2. Cobr2 and cocl2 crystallized out and had minimum solubilities at intermediate acid concentrations, and then increased in solubility because of the formation of bromide and chloride complexes at higher acid concentrations. PBbr2 was minimally soluble in water and increased in solubility as hbr concentration increased. The data agree with literature values obtained from long-term equilibrium tests. Hydration states of the salted-out chlorides and bromides were determined by a wet-residue method and depended on temperature and acid concentration. [Description provided by NIOSH]
  • Subjects:
  • Series:
    Mining Publications
  • Document Type:
    Text
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    RERC - Reno Research Center
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    89-98
  • NIOSHTIC Number:
    nn:10005889
  • Citation:
    Paper in Crystallization & Precipitation Pergamon Elmsford NY 1987 :89-98
  • Federal Fiscal Year:
    1987
  • Peer Reviewed:
    False
  • Source Full Name:
    Paper in Crystallization & Precipitation. Pergamon, Elmsford, New York, 1987, PP. 89-98
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
  • Download URL:
  • File Type:
    Filetype[PDF - 168.02 KB ]
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