A collaborative research team including KAUST scientists has located a major sink for missing ocean plastic in coastal sediments and mangrove forests of the Red Sea and Arabian Gulf. Core samples showed a pattern of plastic sedimentation aligning with the history of global plastic production since the 1950s. Mangroves efficiently lock up microplastics in coastal soil, with plastic burial rates increasing similarly to global production. Why it matters: The findings highlight the critical role of mangroves in trapping plastic pollution and provide evidence that plastic sedimentation marks the start of a new geological epoch, the Anthropocene.
KAUST researchers studied microplastic distribution in the open ocean during a recent expedition. They found microplastics everywhere but in 100 times lower quantities than expected based on production estimates. The study found larger plastic debris at expected levels, but smaller microplastics were disappearing, suggesting they are either sinking or entering the marine food chain. Why it matters: This research highlights the urgent need to understand the fate of microplastics in marine ecosystems and their potential impact on marine life and human health.
KAUST researchers led by Yves Gnanou and Nikolaos Hadjichristidis have developed a metal-free process for creating aliphatic degradable polycarbonates using CO₂. This polycarbonate is transparent, highly flexible, and produced without toxic metals, using an ammonium compound and a boron-based compound. The process helps reduce plastic pollution and CO₂ emissions, addressing environmental concerns. Why it matters: This innovation offers a sustainable alternative to traditional plastic production, aligning with global efforts to reduce reliance on harmful materials and combat climate change.
KAUST Professor Nikos Hadjichristidis leads the Polymer Synthesis Laboratory, collaborating with Yves Gnanou to manipulate macromolecules at the nanoscale. They employ anionic polymerization using high vacuum techniques, a specialized method requiring handmade glassware and careful control. The team is working on sustainable polymeric materials, including rethinking tire composition to improve recyclability and reduce pollution. Why it matters: This research contributes to developing more sustainable plastics and polymers, addressing a critical environmental challenge while advancing materials science in the region.