Japan's Sumitomo joins US project to bury carbon in form of rice hulls

illuminem summarises for you the essential news of the day, reviewed by our editorial team. Read the full piece on Nikkei Asia or enjoy below:

🗞️ Driving the news: Japanese trading house Sumitomo Corporation has invested in U.S. startup Graphyte, which converts rice hulls into microbe-free bricks and stores them underground as a method of carbon dioxide removal (CDR)
• The project aims to scale this climate-friendly technology and expand its application in Asia

🔭 The context: Graphyte’s approach offers a low-tech, soil-based CDR solution by permanently storing agricultural byproducts
• Rice hulls, abundant in Asia, provide a cost-effective feedstock that could complement emerging industrial carbon removal techniques
• Sumitomo’s involvement signals interest from major trading houses in investing in carbon storage solutions beyond conventional industrial offsets

🌍 Why it matters for the planet: By locking carbon from the atmosphere in stable, buried biomass, this method could mitigate greenhouse gas concentrations while utilizing agricultural waste
• Scaling such solutions in rice-producing regions could have meaningful climate impact and reduce reliance on fossil-based offsets

⏭️ What’s next: Graphyte plans to expand production capacity and explore partnerships across Asia
• Investors like Sumitomo may help accelerate deployment, while regulatory frameworks for soil-based carbon credits will influence project viability

📈 One stat: Currently, Graphyte’s technology focuses on converting rice hulls into carbon-storing bricks; exact CDR volumes per project have not been publicly quantified.

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