Sequest unveils hyper-arid desert biomass storage protocol in Saudi Arabia

Sequest announced a new carbon dioxide removal methodology that uses hyper-arid desert conditions to store agricultural biomass residue, preventing decomposition and creating a durable carbon sink. The approach involves transporting crop residues to desert locations and enclosing them in engineered chambers to maintain moisture levels below microbial activity thresholds. The 'Horizon' project in Saudi Arabia is the initial operational deployment, targeting an annual net removal of 1,000 tonnes of durable carbon dioxide. Puro.earth has completed a preliminary assessment of the core methodology, which aims to provide a scalable, low-complexity solution for durable carbon removal.