Risk Analysis on PMMA Recycling Economics

Area of Science:

• Polymer science and engineering
• Chemical engineering
• Circular economy

Background:

• Poly(methyl methacrylate) (PMMA) is a widely used polymer with significant post-production waste.
• Current recycling methods for PMMA face economic challenges and varying feedstock qualities.
• The demand for high-quality recycled materials is increasing due to stringent environmental regulations.

Purpose of the Study:

• To investigate the economic risks associated with depolymerization of different PMMA waste feedstocks.
• To evaluate the impact of capital expenditure (CAPEX) and regenerated MMA (r-MMA) prices on profitability.
• To identify optimal recycling scenarios for PMMA based on economic viability and product quality.

Main Methods:

• Monte Carlo simulation was employed to analyze depolymerization process economics.
• Economic risks were assessed for various PMMA scrap feedstocks and r-MMA prices.
• Analysis included capital investment, operational costs, and product quality.

Main Results:

• Capital investment and r-MMA quality are key drivers of profitability in PMMA recycling.
• Lower capital-intensive plants offer faster payback but yield lower quality r-MMA.
• High-quality r-MMA production (Scenario 6) maximizes net present value over 10-20 years.
• Processing free, low-quality feedstock (Scenario 7) presents a high risk of negative NPV.

Conclusions:

• Prioritizing high-quality r-MMA production is crucial for long-term economic success in PMMA recycling.
• Investment in advanced depolymerization and purification technologies is essential for meeting market demands.
• Demonstrating the link between funding, higher product quality, and market viability is key to securing investment and support.