| abstract |
A precipitate for use in removal of heavy metal from an aqueous solution includes a reaction product of an acidic solution and a basic solution. The acidic solution comprises a metal salt and water. The basic solution comprises a metal compound selected from the group of metal silicates, metal carbonates, and combinations thereof, a Lewis base, and water. The acidic solution is added directly to the basic solution over a period of time of at least 5 minutes thereby forming a reaction mixture that includes the precipitate. |