Wood is good but arsenic is toxic
In South Australia, we have a booming wine industry and every single winery uses copper, chromium and arsenic (CCA) treated wood.
This extends around the world and currently the only safe method of disposing of treated wood is in landfill sites. It cannot be burnt or buried because the CCA is toxic to the environment. Our aim is to find out if hydrothermal carbonisation (high temperature and pressure water) can remove the CCA from treated wood and leave only a small sample of clean carbon hydrochar behind.
In this project we vary the temperature, residence time and wood particle size to gather information on the most effective reaction conditions to extract the CCA and reduce the mass of the wood.
Our built and natural environments
Chemical Engineering and Advanced Materials
Mai Trinh Phuong Nguyen