Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1978-12-13
1980-04-29
Wyse, Thomas G.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 51, 210DIG30, C02B 120, C02C 502
Patent
active
042005280
ABSTRACT:
Amorphous, hydrated magnesium silicate is effective in reducing the concentration of various metal ions in aqueous solutions or effluent streams. Both mono- and multi-valent ions can be treated in this manner thereby providing a method of preventing release of metal ions to the environment. The method is especially efficient in removal of chrome values from effluents generated in chrome tanning operations. Efficient adsorption of the chrome requires that the pH of the effluent-magnesium silicate slurry be adjusted to or maintained at a value between 5.3 and 9.8. The chrome value may be recovered from the magnesium silicate by acidification of the complex.
REFERENCES:
patent: 3766036 (1973-10-01), McKaveney
patent: 3928195 (1975-12-01), Hoeltgen et al.
patent: 4012320 (1977-03-01), Conner et al.
Cassella Vincent J.
Irani Mazin R.
Bobb J. Stephen
Philpitt F. C.
Posner E. G.
PQ Corporation
Wyse Thomas G.
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