There are various types of technologies used for carbon capture, which mainly fall under three categories: post-combustion capture (a primary method used in power plants), pre-combustion carbon capture (used in industrial processes), and oxy-fuel combustion systems . Because pre-combustion capture performs better in energy efficiency than other categories due to its lower energy demand for CO 2 , and greenhouse gases are primarily direct emissions from industries. Hence, this paper will focus mainly on the methods within pre-combustion capture to store and use CO 2 . In this process, pre-combustion capture first undergoes the gasification process, in which a feedstock such as coal is oxidized in steam and oxygen/air under high temperature and pressure to form a synthesis gas. This syngas will then undergo the water-gas shift reaction (CO + H 2 O → H 2 + CO 2 ) by injecting H 2 O into the synthesis gas formed with carbon monoxide. The CO 2 is removed before combustion, so the H 2 -rich syngas are then supplied to gas turbines for combustion. This allows a more concentrated stream of CO 2 to be compressed into a liquid to be stored or reused .