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A 2026 Gulf of Maine trial safely boosted ocean alkalinity with sodium hydroxide, removing 10 tonnes of CO₂, but long-term effects remain unknown.
A small-scale 2026 trial in the Gulf of Maine successfully increased ocean alkalinity using sodium hydroxide, removing up to 10 tonnes of CO₂ by enhancing natural carbon absorption.
No immediate harm to marine life was detected during short-term monitoring, suggesting potential safety at a local level.
However, the experiment was not designed to assess long-term ecological effects, scalability, or carbon storage permanence.
Scientists caution that impacts on plankton, nutrient cycles, and ecosystems remain uncertain, emphasizing the need for larger, longer-term studies and international oversight before considering broader use.
The method is not a substitute for emissions reductions but may be one tool in climate mitigation.
Un ensayo en el Golfo de Maine en 2026 aumentó de forma segura la alcalinidad oceánica con hidróxido de sodio, eliminando 10 toneladas de CO₂, pero los efectos a largo plazo siguen siendo desconocidos.