Abstract
Due to deteriorating air quality, air pollution has become one of the most serious environmental issue especially in urban localities. Therefore, in the current study we have focused on a new route for the efficient capture of CO2 and PM2.5 from the automobile exhaust smoke of light motor vehicle with the aid of amino functionalised high internal phase emulsion (HIPE) polymeric monolith. The Poly (Styrene-co-methyl methacrylate) monolith (PSM) was synthesised by copolymerising styrene with methyl methacrylate and cross linked with divinylbenzene. The –NH2 functionalization of the synthesised PSM monolith was carried out with ethylenediamine. The amino functionalised porous hydrophobic monolith (APSM) comprising of voids (cavity spaces) and pores (tiny openings) in the range of 3.0–7.4 µm and 1.1–2.4 µm respectively exhibited excellent thermal stability up to 323 °C. Capturing efficiency of the porous monolith filter for CO2 and PM2.5 was found to be 73% and 77.2% respectively. The filter also demonstrated outstanding dust loading capacity with a reduced pressure drop. Good resistance and quality factor value proved the viability of the membrane to act as an air filter. Regeneration capacity of the filter was also studied to demonstrate the effective filtration on continuous usage.
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