An Overview of Emission Sources, Separation Methods and Valuable Crops Producible from CO2

The increase in CO2 emissions is the main cause of global warming and causes adverse environmental challenges. Based on this, finding ways to convert CO2 into useful products can help reduce the harmful environmental effects of this substance on the one hand, and increase the economic efficiency of the process to produce valuable products on the other hand. Thus, the sources of CO2 emissions were investigated first, and then the methods of separating of CO2 were described. Also, the use cases of CO2 in various industries were discussed. The results showed that membrane contactors are one of the effective technologies in CO2 absorption. Also, the product which currently produced in large quantities from CO2 is urea. Then there are some discussions about urea. The results of studies showed that membrane contactors are one of the effective technologies in CO2 absorption, so some investigations were carried out in this field.