Chemical separation unit for recovering materials from OCC screen rejects
A chemical separation unit designed to recover valuable materials from OCC screen rejects using selective dissolving and precipitation. This eco-friendly approach enhances resource recovery and aligns with circular economy principles.
Overview
This innovative chemical separation unit is engineered to transform OCC (Old Corrugated Container) screen rejects from a waste stream into a source of valuable materials. By leveraging a circular economy approach, this technology offers an eco-friendly alternative to incineration or landfilling. It uses a series of chemical separators to efficiently recover materials such as HDPE, LDPE, PVC, PS, cellulose, and lignin through selective dissolving and precipitation processes.
Technical specifications
Key features:
- Uses dedicated solvents under moderate temperature and atmospheric pressure conditions
- Selectively dissolves and precipitates ingredients including plastics and cellulose
- Efficient pretreatment process for separating inorganic fillers, salts, metals, and inks
- Designed for a 1-5L separation unit to optimize process efficiency
Applications:
- Recovery of plastics and cellulose from OCC screen rejects
- Potential for application in other waste streams containing similar materials
- Converts waste into secondary raw materials compatible with customer needs
Technology readiness level
The technology is currently at TRL 3, indicating that it has been experimentally proven in a laboratory setting. Future plans include building a prototype separation unit to conduct lab tests and optimize the process, with a focus on mass and techno-economic balance assessments.
About Hebrew University of Jerusalem
The Hebrew University of Jerusalem is a comprehensive public research university with multiple campuses in Jerusalem and an agricultural campus in Rehovot. Its integration with Hadassah’s university hospitals enables clinical studies, access to varied patient populations, and co‑located research that accelerates translation. Industry engagement runs through Yissum, the university’s tech‑transfer company, managing IP, licensing, startup creation, and sponsored research agreements. Research is supported by competitive national funding and international programs, including European Union frameworks.
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