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AssigneeAero-Terra-Aqua Technologies Corporation
InventorsBobby L. Summers, Jr., Lester B. Gress, Warren H. Philipp, Scott B. Eastep
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A bead is provided which consists essentially of peat moss immobilized by crosslinked neutralized poly(carboxylic acid) binder, sodium silicate binder, or polysulfone binder. The bead is effective to remove metal contaminants from dilute aqueous solutions. A method of making metal-ion-sorbing beads is provided, comprising combining peat moss or other nonliving biomass and binder solution (preferably in a pin mixer where it is whipped), forming wet beads, and heating and drying the beads. The binder solution is preferably poly(acrylic acid) and glycerol dissolved in water and the wet beads formed from such binder solution are preferably heated and crosslinked by radio frequency heating.
A bead comprising peat moss and a binder, said binder being poly(carboxylic acid) effectively crosslinked with a crosslinking agent and effectively neutralized with an alkali metal, an alkaline earth metal, or a mixture thereof, said peat moss being effectively immobilized in said bead, said bead being capable of sorbing a metal or metalloid dissolved in a dilute aqueous solution at a concentration of less than 10 ppm, said metal or metalloid being selected from the group consisting of silver, iron, chromium, cobalt, uranium, mercury, nickel, arsenic, aluminum, cadmium, lead, manganese, copper, and zinc.
A method of making a metal-ion-sorbing bead, said bead being effective to sorb metal ions from a dilute aqueous solution, said metal being selected from the group consisting of silver, iron, chromium, cobalt, uranium, mercury, nickel, aluminum, cadmium, lead, manganese, copper, and zinc, the method comprising the steps of:
A method of removing a metal or metalloid ion from a dilute aqueous solution in which said ion is present, said method comprising the steps of:
Dependencies are inferred from the claim text.