<p>The Carbona project is an innovative technological initiative that transforms vehicular and industrial carbon emissions into usable ink. This paper explores the design, working principle, and environmental and societal implications of the Carbona system. Leveraging filtration, chemical purification, and mixing processes, Carbona captures particulate matter (PM), carbon soot, and other harmful pollutants, and processes them into high-grade carbon ink. The system supports the circular economy by converting waste into value, mitigating air pollution, and promoting sustainable engineering. In this journal paper, we detail the materials, methodology, components, challenges, environmental and social impact, advantages, and the broader implications for the future of sustainable development and urban pollution management.</p> Graphical abstract <p></p>