Saving Our Planet from Plastic & Glass Pollution | Jean-Baptiste Mawulé Dassekpo | TEDxTsinghua SIGS

Key Concepts

• Marine Pollution: The accumulation of solid waste (plastic and glass) in ocean ecosystems.
• Micro-pollutants: Micro-plastics and micro-glass fragments that enter the food chain.
• Circular Economy: An economic system aimed at eliminating waste and the continual use of resources.
• Geopolymer Composites: Advanced materials created from waste products (glass, fly ash) used for structural and environmental remediation.
• Structural Health Monitoring (SHM): The use of self-sensing materials to monitor the integrity of infrastructure.

---

1. The Ocean Crisis: Scope and Impact

Shambatist Ma Daeko highlights that the ocean is currently in a state of crisis, with one garbage truck equivalent of solid waste entering the sea every minute.

• Statistical Data: Approximately 11 million tons of plastic enter the oceans annually. Projections suggest that by 2050, the weight of plastic in the ocean could exceed the weight of all fish.
• Ecological Impact: Plastic and glass act as "sponges" for pollutants, which are then released into marine life. This leads to habitat destruction and the potential extinction of species before they are even discovered.
• Human Health Risks: Micro-plastics and micro-glass enter the human food chain via seafood, accumulating in digestive systems and bloodstreams. These materials carry toxic chemicals that disrupt hormones and damage organs.

2. Framework for Action

Ma Daeko proposes a three-tiered approach to mitigate ocean pollution:

• Individual Level: Reducing single-use plastics, returning glass bottles, proper waste sorting, and supporting environmentally conscious brands.
• Community/City Level: Implementing modern recycling systems, establishing deposit-return programs, and organizing community-led coastal cleanup efforts.
• Technological/Innovation Level: Developing marine-safe plastics, creating functional materials from waste, and fostering circular economic systems.

3. Research and Technological Innovations

The speaker presents specific scientific breakthroughs developed through research aimed at 100% glass recycling:

• Composite Materials: Development of a composite material using glass powder at temperatures below 200°C, which outperforms conventional market alternatives.
• Heavy Metal Remediation: Creation of a "mesoporous absorbent" capable of removing heavy metals (lead, copper, and cadmium) from wastewater, even at minimal doses.
• Boros Geopolymer Concrete: A composite material made of over 80% waste. Laboratory tests show it removes 97% of strontium and 91% of cesium from water, offering a dual-purpose solution for construction and environmental cleanup.
• Self-Sensing Composites: A material developed from waste glass, carbon black, and fly ash used for Structural Health Monitoring (SHM). This material can monitor real-time deformation in critical infrastructure such as ocean platforms, airport runways, railways, tunnels, and bridges.

4. Notable Statements

• "If this trend continues, fish will be outnumbered by 2050. In other words, our future meal may contain more plastic than fish."
• "We believe that science and innovation can truly help this issue. Imagine a future where people swim in peace, turtles swim freely, reefs flourish, and beaches shine."

5. Synthesis and Conclusion

The presentation underscores that the ocean crisis is a direct threat to both marine biodiversity and human health. By shifting from a linear "dumping" model to a circular economy—supported by innovative material science—we can transform waste into functional assets. The research presented demonstrates that waste glass and other industrial byproducts can be repurposed into high-performance materials that not only clean our water and monitor our infrastructure but also strengthen the "blue economy." The speaker concludes that while the crisis is severe, a sustainable future is achievable through immediate, collective action and scientific innovation.