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Nueva técnica para eliminar sustancias peligrosas en envases residuales mediante dióxido de carbono supercrítico en el proceso de reciclaje

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOES20141124002
Publicado:
01/12/2015
Caducidad:
14/06/2016
Resumen:
Un centro tecnológico español está desarrollando una nueva técnica para eliminar sustancias peligrosas en envases residuales de polietileno (PE) que se utilizan para disolventes o productos fitosanitarios. Esta técnica se basa en la aplicación de dióxido de carbono supercrítico (sc-CO2) en la fase de extrusión del proceso de reciclaje. La nueva tecnología de reciclaje permite reducir el consumo de agua, el uso de productos químicos y el consumo de energía. Se buscan socios para continuar con la investigación o establecer acuerdos de cooperación técnica y adaptar e implementar la tecnología mediante el intercambio de know-how.

Details

Tittle:
New technique to remove hazardous substances in waste packaging by supercritical carbon dioxide in the recycling process
Summary:
A Spanish technology centre is developing a new technique for eliminating hazardous substances from waste polyethylene (PE) packaging to be used for solvents or phytosanitary products. This technique uses a technology that applies supercritical carbon dioxide (sc-CO2) in the extrusion phase of the plastic recycling process. The centre seeks partners to discuss further research ideas or to establish technical agreements to adapt and implement the technique sharing know-how.
Description:
Around 3% of waste generated in the EU27 is hazardous, which represents about 12 kg of hazardous waste per capita (2006 data, EUROSTAT). EU legislation covering hazardous waste requires Member States to comply with certain rules concerning its collection, handling, recycling and treatment.

The conventional method for reducing or eliminating threats from hazardous waste containers involves the triple rinsing and draining of empty containers. In the case of plastic packaging, it involves pre-rinsing, crushing, washing (with different washing agents, detergents or surfactants) and the subsequent rinsing and drying. After drying, the material can then be passed through an extrusion line, to produce a recycled material in pellet form.

This process requires large amounts of water, cleaning agents, and energy. It also produces large volumes of wastewater. Additionally, the recycled plastic obtained from a conventional recycling process is used in applications with low added value (e.g. pallets), as they generally have inferior mechanical and organoleptic properties.

The Spanish centre is developing a new technique for eliminating hazardous substances from waste polyethylene (PE) packaging to be used for containers of solvents or phytosanitary products. This technique uses a technology that applies supercritical carbon dioxide (sc-CO2) in the extrusion phase of the plastic recycling process.

This process partially, or totally, substitutes two of the three stages involved in conventional treatments, which reduces the labour requirement and the consumption of energy, cleaning agents and water. The recycled material can then be employed in the production of packaging for hazardous substances, closing the life cycle. This is a reference for the implementation of new solutions in the plastics recycling industry, leading to more efficient and environmentally-friendly processes, as well as higher quality recycled material.

The centre seeks partners for further development projects considering the area and know-how related to this technology, and they would also like to connect to companies and/or industries that would like to use the technology in their recycling processes and the final product obtained for new packaging materials.
Advantages and Innovations:
The new recycling technology of waste plastic packaging to be used in containers for hazardous substances can achieve:
- A reduction in water consumption
- A reduction in chemicals use
- A reduction in energy consumption
Stage of Development:
Project already started
IPs:
Secret know-how

Partner sought

Type and Role of Partner Sought:
Type of partner sought: industry, university or research organization
Field of activity of the partner: plastic recycling processors, manufacturers of plastic packaging for hazardous substances, end-users of containers of hazardous substances.
Role of the partner: contribute with knowledge, testing facilities or manufacturing plants for further development projects or to adapt the technique and/or materials obtained to specific requirements.

Client

Type and Size of Client:
R&D Institution
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English
Spanish

Keywords

Technology Keywords:
10001004 Materias peligrosas
02002013 Moulding, injection moulding, sintering
02007014 Plastics, Polymers
03004008 Plásticos y caucho relacionado con ingeniería y tecnología química
10003004 Reciclaje, recuperación