Composition for solid waste remediation
AssigneeEncapco
InventorsWilliam M. Jones, Michael P. Doyle, Bruce W. Page
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Abstract
Solid waste contaminated with cationic metals is remediated with a composition that reduces the mobility of the metals. A recycled product is formed having improved structural properties for possible use as engineered fill such as road base material. Said composition comprising an emulsion of asphalt or tall oil pitch in water and a chemical fixing agent.
Claims22
A method of treating solid waste contaminated with a leachable cationic metal for clinically fixating said cationic metal without said solid waste, said method comprising mixing the solid waste with an oil in water cationic emulsion system that coats and applies a thin film of residue of said emulsion to immobilize by chemical fixation the cationic metal to reduce amounts of cationic metal leachable from said solid waste, said emulsion comprising an organic component comprising a member selected from the group consisting of asphalt and tall oil pitch and mixtures thereof, an aqueous phase including an emulsifying agent for said organic component and an agent comprising a member selected from the group consisting of carboxylic acid and precipitating agents for said cationic metal.
A method of producing a construction material from solid waste contaminated with a leachable cationic metal, said method comprising mixing the solid waste with an oil in water cationic emulsion system that coats and applies a thin film of residue of said emulsion to immobilize by chemical fixation the cationic metal to reduce amounts of cationic metal leachable from said solid waste, said emulsion comprising an organic component comprising a member selected from the group consisting of asphalt and tall oil pitch and mixtures thereof, an aqueous phase including an emulsifying agent for said organic component and an agent comprising a member selected from the group consisting of carboxylic acid and precipitating agents for said cationic metal.
Dependencies are inferred from the claim text.