This　study　proposes　the　capture　of　dimethyl　sulfide　(DMS)　and　dimethyl　disulfide　(DMDS)　from　waste　gas　using　an　ionic　liquid　(IL),　namely,　1-ethyl-3-methylimidazolium　bis(trifluoromethylsulfonyl)imide　([EMIM][Tf2N]),　and　examines　the　process　from　a　molecular　level　to　the　laboratory　scale,　which　is　then　scaled　up　to　the　industrial　level.　The　binding　energy　and　weak　interactions　between　DMS/DMDS　and　the　anion/cation　in　[EMIM][Tf2N]　were　investigated　using　quantum　chemistry　calculations　to　identify　the　capture　mechanism　at　the　molecular　scale.　A　thermodynamic　model　(UNIFAC-Lei)　was　established　by　the　vapor−liquid　equilibrium　data　of　the　[EMIM][Tf2N]　+　DMS/DMDS　systems　measured　at　the　laboratory　scale.　The　equilibrium　and　continuous　absorption　experiments　were　performed,　and　the　results　demonstrated　that　[EMIM][Tf2N]　exhibits　a　highly　efficient　capture　performance　at　atmospheric　conditions,　particularly,　absorption　capacities　(AC)　for　DMS　and　DMDS　are　189.72　and　212.94　mg　g−1,　respectively,　and　partial　coefficients　(PC)　as　more　reasonable　evaluation　metrics　for　those　are　0.509　×　10-4　and　6.977　×　10-4　mol　kg−1　Pa−1,　respectively,　at　the　100　%　breakthrough.　Finally,　a　mathematical　model　of　the　strict　equilibrium　stage　was　established　for　process　simulations,　and　the　absorption　process　was　conceptually　designed　at　the　industrial　scale,　which　could　provide　a　decision-making　basis　for　chemical　engineers　and　designers.　©　2020　Elsevier　B.V.