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Air pollution was responsible for 4.2 million deaths in 2016. Next to toxic gasses, particulate matter (PM) was the main culprit as particulate matter below 2.5 µm (PM 2.5) can reach the lung alveoli and damage lung tissue. However, by filtering this particulate matter at the source via filters with a high filtration efficiency, this damage can be prevented. By using a nanofiber mesh supported by a substrate, PM2.5 is captured without drastically increasing the pressure buildup. One of the most efficient ways to make these nanofibers is electrospinning. This technique has seen an increased interest in the last two decades due to its versatility, simplicity and speed. However, most nanofibers are currently made from polymers that are not biodegradable or biosourced and the manufacturing process often utilises toxic solvents such as chloroform and DCM. This poses a problem as in the last decade there has been a worldwide push to focus attention on sustainability. In order to transition in the filtration market to more sustainable nanofiber production, new polymer-solvent systems (PSS) need to be developed. In this exploratory study PEO in water, PVP in water, PVP in ethanol, PVDF in DMF, cellulose acetate in acetic acid/water (75/25wt\%), cellulose acetate in acetone/DMF (80/20vol\%) and polyvinyl alcohol in water are tested to see if (1) a uniform nanofiber solid morphology can be obtained by electrospinning and (2) to see what the filtration efficiencies of these nanofibers on a cellulose or nylon substrate are. In order to predict the processability and solid morphology of the polymer-solvent systems a processability map is set up by plotting for each sample of a concentration range going from dilute to concentrated solutions the Deborah (De) number over the Ohnesorge (Oh) number. This reports shows that the processability map provides a qualitative indication of the attainable solid morphology (beads, beads-on-string or uniform fibers) as samples with a De and Oh number below 0.2 always produce beads and De numbers above 1 prove necessary in order to transition to a beads-on-string solid morphology. The change in solution parameters (µ, γ, λ), processability and solid morphology as a function of polymer concentration is discussed on an individual basis. All tested PSS can produce nanofibers and the addition of nanofibers can increase the overall filtration efficiency up to 31\%. Future testing of the CA in acetic acid and water and PVA in water polymer-solvent systems is highly recommended as they are considered the most sustainable tested PSS. CA in acetic acid and water had the best filtration efficiency and only PVA in water could form uniform electrospun fibers already at a semi-dilute regime.