A recently published paper in Chemical Engineering Journal explores the critical role of Direct Air Capture (DAC) and Direct Ocean Capture (DOC) in addressing the challenge of removing carbon dioxide from the atmosphere. Both methods aim to extract CO2 from the atmosphere and seawater, respectively, which is vital for protecting marine ecosystems and regulating the global climate.
Despite their potential, DAC and DOC face significant hurdles, particularly in terms of operational costs and technological readiness. The paper outlines these challenges, highlighting high capital investments, energy demands, and the need to integrate renewable energy sources to minimize environmental impact.
Moreover, the review emphasizes the importance of techno-economic benchmarking to assess the feasibility of scaling these technologies. By evaluating their effectiveness in reducing CO2 emissions and enabling localized carbon management, this research contributes valuable insights into the future of climate action. As the world continues to grapple with global warming, understanding and overcoming these barriers will be essential for deploying DAC and DOC at a larger scale.
For more details, read the full article in Chemical Engineering Journal 
Direct air capture (DAC) vs. Direct ocean capture (DOC)–A perspective on scale-up demonstrations and environmental relevance to sustain decarbonization