Process for the removal of heavy metals and transition metals other than platinum from solution
AssigneeThe British Petroleum Company p.l.c.
InventorsRonald D. Hancock, Ian V. Howell
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Abstract
A process for the removal of heavy metals uranium and transition metals other than noble transition metals from solution by contacting the solution with the product obtained by reacting an inorganic solid eg. silica gel containing surface hydroxyl groups with a silicon compound of defined formula containing a free thiol group or a free amino group and either an --OR group or a halogen atom under conditions which effect reaction between the hydroxyl group and the --OR group or halogen atom thereby bonding the silicon compound to the inorganic solid.
Claims21
A process for purifying liquids containing mercury, silver, lead, copper, cadmium, rhodium or uranium metal residue which comprises removing such a metal by contacting a liquid solution containing such a metal in the form of a soluble compound thereof with a substrate obtained by reacting an inorganic solid contacting surface hydroxyl groups with a compound of the formula ##STR13## wherein R is a divalent organic group of up to 20 carbon atoms;
- Y is the same and is the group --OR.sub.3 where R.sub.3 is hydrogen or an alkyl group;
- or Y is chlorine;
- and X is --SH, --NHCH.sub.2 CH.sub.2 NH.sub.2, --NH.sub.2, or ##STR14##
Dependencies are inferred from the claim text.