Metal ion adsorption and immobilization by carbon-coated oil-treated plastic granules

Abstract

Treating plastic particles include combining waste bio-oil and a multiplicity of plastic particles, thereby forming a multiplicity of bio-oil-coated plastic particles; combining biochar and the multiplicity of bio-oil-coated plastic particles in an aqueous solution to yield a mixture including a multiplicity of biochar-coated plastic particles; and separating the multiplicity of biochar-coated plastic particles from the mixture to yield a multiplicity of treated plastic particles. Treating wastewater includes contacting the multiplicity of biochar-coated plastic particles with wastewater including metal ions and adsorbing the metal ions onto the multiplicity of biochar-coated plastic particles, thereby reducing a concentration of the metal ions in the wastewater.

Dependencies are inferred from the claim text.