Abstract
•Investigations on different types of nanofluids and their performance.•Understanding the effects of nanoparticle types on the behaviour of nanofluid.•Analysis of CO2 capture using nanofluids.
Development of novel, efficient and cost-effective strategies to diminish the permanent emission of greenhouse gases (GHGs) to the atmosphere has been an indisputable concern for scientists. CO2 is known as the most prominent GHG, which its abnormal amount in the atmosphere accelerates the occurrence of unfavorable environmental events such as acid rain, ocean acidification, global warming, and soil degradation. Nowadays, application of various nanofluids for increasing separation efficiency of CO2 has been an attractive subject due to their certain privileges such as chemical compatibility and great specific area. This paper tries to provide an up-to-date overview of the commonly-employed nanofluids accompanying with their properties and applications to enhance the separation efficiency of CO2. Moreover, important mechanisms toward improving the mass transfer rate and the separation proficiency of CO2 through the nanofluids are comprehensively discussed and summarized. Single material nanofluids (SMNFs) and hybrid nanofluids (HNFs) are considered as major categorizations of commonly-employed nanofluids in the scientific scope of membrane-based gas separation process (MGSP), which are aimed to be discussed in this paper. True recognition of nanofluids application in the CO2separation process leads to finding its advantages/disadvantages in comparison with other conventional procedures.