How to Combat Ocean Acidification?

Ocean acidification is driven by rising atmospheric carbon dioxide from human activities and it is causing significant changes in ocean chemistry that threaten the marine ecosystems, particularly shell-forming organisms and the coral reefs. This project investigates an engineering-based solution inspired by natural coastal erosion, where the calcium carbonate from cliffs leeches into seawater therefore buffering acidity in the water. The paper proposes a device that is a boat-mounted pellet dispenser that gradually releases limestone (CaCO₃) pellets into the ocean thereby increasing its alkalinity and enhancing its capacity to absorb CO₂. The dispenser machine will consist of three integrated components: a helix feed mechanism, a rotary drum, and a bevel gear system, which together will ensure a steady and evenly distributed release of pellets in proportion to the boat’s speed. Prototype testing confirmed the basic functionality of each component, with potential for improvement through automated control systems, corrosion-resistant materials, and integrated pH sensors. By mitigating local acidification through a low-cost scalable method, adaptable to various vessel types, this approach aims to complement global CO₂ reduction efforts. The device represents a practical step toward protecting vulnerable marine habitats and demonstrates the role of bio-inspired engineering in addressing climate-related challenges, however further research is required to assess large-scale environmental impacts and optimize dissolution rates