Node 4: Risk Assessment & Standards
Ensuring Safety in Circular Economy Applications
For repurposed waste materials to be successfully adopted by the industry, they must be proven safe for both human health and the environment. Node 4 provides the rigorous scientific foundation required to validate the technologies developed in other nodes. Researches conduct comprehensive environmental impact studies, lifecycle assessments, and long-term toxicity monitoring on recycled materials. Reference Values (RVs) for processed waste are finalized, ensuring that every new application meets the highest safety thresholds before leaving the laboratory.
Establishing the Framework for Industry Adoption
Node 4 acts as the vital bridge between scientific innovation and regulatory compliance. By working closely with the National Environment Agency (NEA) and industry partners, this node helps translate complex scientific data into practical, enforceable standards. Whether determining the safe limits for heavy metals in repurposed ash or establishing protocols for the use of recycled materials in public infrastructure, Node 4 ensures that Singapore's transition to a circular economy is built upon a framework of safety, transparency, and public trust.
Our Team
Ms Joanna HY LIM
Deputy Principal Engineer
(Pollution Control 2 Division), NEA
Node 4 Lead
Dr FEI Xunchang
Associate Professor, NTU School of Civil and Environmental Engineering
Node 4 Lead