Singapore researchers turn shrimp shells into carbon-negative hydrogen fuel and useful materials

Researchers at Nanyang Technological University in Singapore have developed a process that converts shrimp shell waste into carbon-negative hydrogen fuel, along with protein for fish feed and calcium carbonate for construction materials. The method uses electrochemical reactions to break down organic waste, preventing it from going to landfill and producing useful products instead. The team says the process removes more CO2 from the atmosphere than it emits, making it carbon-negative on a lifecycle basis. The technology is still at the lab scale and not yet ready for commercial use. But it points to a potential pathway for turning biomass waste streams into low-carbon energy and materials. For carbon markets and climate finance, the key question is whether this process can scale economically and how the carbon accounting would work for the resulting hydrogen and byproducts. If it does scale, it could create a new category of carbon removal credits tied to waste valorization.