"The hydrometallurgical process allows for the simultaneous solubilization of contaminants present in wood waste," said Professor Blais. "It stands out from existing technologies for its ease of operation, its metal solubilization capacity, and its low greenhouse gas emissions."
Once decontaminated, the wood waste can be reused as a raw material for the manufacture of value-added products such as particleboard or heating pellets. In addition, recovered metals could potentially be used to manufacture by-products, such as chromium oxide and copper sulphate.
In short, this hydrometallurgical process outperforms the biological and thermal processes currently used to decontaminate treated wood waste. It is low cost and offers several advantages:
- It improves the management of treated waste wood by diverting it from landfill or incineration.
- It allows the wood fibre to be recycled.
- It reduces contamination in the recycled wood industry.
- It ensures a regular and constant supply of quality wood fibre.