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US 12,435,200 B2Granted
Method for decontaminating recycled plastic
AssigneeUniversidad de Alicante
InventorsAndrés Fullana Font, Andrea Cabanes Gil, Oksana Horodytska
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Abstract
The invention relates to a method for decontaminating recycled plastic materials, which comprises the steps of selecting, grinding, washing, rinsing, drying and decontaminating, wherein decontaminating is carried out by means of the steps of extracting and rinsing, and extracting is carried out using a water-soluble solvent having a boiling point greater than 180° C. at atmospheric pressure.
Claims13
A method for decontaminating recycled plastic comprising the following steps:
- separating the recycled plastic by type of material;
- grinding the separated plastic to reduce a size of the material to flake or powder;
- washing, rinsing and drying the material;
- decontaminating the material;
- wherein decontaminating the material comprises:
- extracting contaminants from the material with a water-soluble solvent having a boiling point greater than 180° C.;
- and
- rinsing the decontaminated material with water at room temperature;
- separating the solvent from the water;
- and
- decontaminating the separated solvent and the separated water in a continuous process to enable recirculation and reuse of the separated solvent and the separated water;
- and
- wherein the step of decontaminating the material is carried out independently from a recycling process such that the recycled plastic can be plastic recycled by other methods.
10 more elements
Dependencies are inferred from the claim text.