Patent review on revolutionary electrochemical CaCO 3 conversion for cement manufacturing

Abstract Sustainable development has become a necessity in conventional cement production to reduce environmental impact. Global demand needs to reduce greenhouse gas (GHG) emissions. The transition to green cement manufacturing plays a key role in achieving net-zero carbon dioxide (CO 2 ) emissions and carbon-neutral concrete by 2050. This patent review highlights the importance and potential of green cement manufacturing through an electrochemical process, converting calcium carbonate (CaCO 3 ) into calcium hydroxide Ca(OH) 2 to produce ordinary Portland cement. This study reveals the entire patent landscape in green cement production and electrochemical green cement production. It highlights and describes the notable patents and their methodology. In addition, this review assesses the innovation of electrochemical technology in cement manufacturing and its potential and feasibility. A roadmap with efficient and effective polices and a framework can enhance the production of green cement. It can be expected that incorporation of electrochemical technology for calcium hydroxide production, when paired with renewable resources, cannot only reduce the overall emission and carbon footprint of cement products but also contribute toward achieving sustainable development goals, mitigate climate change, and regulate the market trend toward more sustainable products. It has been proven that interdisciplinary collaboration is indeed a necessity to overcome the technical and regulatory barriers.