G.L. Jaiswar
Amvedkar University Agra,
India
Keywords: polymer nanocomposite, carbon dioxide capturing, nanocrystals, functionalization
Summary:
Carbon dioxide (CO2) impacts the greenhouse effect significantly and results in global warming, prompting urgent attention to climate change concerns. In response, CO2 capture has emerged as a crucial process to capture carbon produced in industrial and power processes before its release into the atmosphere. The main aim of CO2 capture is to mitigate the emissions of greenhouse gas and reduce the anthropogenic impact on climate change Functionalization of polymers has recently become better understandable as a good tool to prepare composite materials possessing excellent thermal, mechanical, and other specific required properties for CO2 capturing. Polymers are promising candidates to solve existing engineering problems, due to its low density and excellent mechanical performance. Functional groups was successfully introduced in the past decades and there is still work is going on in this domain. Functional groups like amino groups with porous organic polymers, and polymeric membranes are shown to achieve specific required properties CO2 capturing. The selection of the appropriate CO2 capture strategy depends on various factors, such as the temperature and pressure of the CO2 point sources, the partial concentration and partial pressure of CO2, levels of impurities and pollutants, efficiency of the capture process, costs involved, and the environmental impact of the method. Absorption of CO2 by nanofluids, nanocrystals and by two types of membranes: namely, hollow fibre membrane and omniphobic membrane to reduce CO2 emission at the point source. Potential applications of the omniphobic membrane as CO2 absorbers, the applications of nanofluids for the absorption of CO2 in presence of nanoparticles made up of SiO2 and Al2O3 are highlighted in the presentation. Moreover, the absorption of CO2 by nanocrystals like amin-based cellulose nanocrystals and amino silane-grafted cellulose nanocrystals are discussed. In future researchers need to focus on the modification of membrane as well nanomaterials used in the development of absorption of CO2 gas, by improving the active mass transfer, flow rate of absorbent, membrane mass flux etc. This can be done by doping metals for the formation of suitable nanofluids and nanocrystals.