A recent study published in the journal Carbon Future emphasizes the potential of utilizing hydrogen from coke oven gas to enhance carbon capture efficiency in industrial processes. By modeling economic and technical aspects, researchers have identified coke oven gas as the most cost-effective source for supporting 'calcium looping,' a method crucial for reducing emissions in industries like cement, steel, and glass manufacturing. This approach, which involves using quicklime to absorb CO2 from flue gases, offers a promising solution to decarbonizing challenging industries essential for modern infrastructure. The integration of hydrogen into calcium looping not only improves CO2 capture rates but also enables the production of synthetic methane, which can serve as a carbon-neutral energy source. Synthetic methane derived from captured CO2 operates within a closed carbon cycle, allowing for the recapture of combustion emissions and offsetting carbon capture costs. The study's economic models demonstrate that utilizing coke oven gas-sourced hydrogen is significantly more efficient than renewable hydrogen, leading to increased profits and operational viability. While coke oven gas proves to be a game-changer in the short to medium term due to its abundance and efficiency, the transition to cleanly sourced hydrogen will be crucial for achieving net-zero greenhouse gas emissions in the long term. Researchers highlight the importance of reducing the costs of clean hydrogen production to make it a more feasible option in the future. Additionally, situating calcium-looping operations in regions with ample limestone and coke oven gas supplies, like Northern China, is recommended for maximizing efficiency and sustainability. This study sheds light on the potential of leveraging coke oven gas as a key hydrogen source for advancing carbon capture technologies, emphasizing the importance of economic viability and technical efficiency in addressing industrial emissions and promoting sustainable practices.