In　this　work,　we　developed　a　clean　and　efficient　process　for　recycling　rare　earth　elements　from　waste　CRT　phosphors.　A　mixture　of　sulfuric　acid　and　hydrogen　peroxide　was　used　for　the　oxidative　leaching　of　the　rare　earth　elements,　and　the　leaching　efficiencies　of　both　Y　and　Eu　reached　99%　under　the　optimal　leaching　conditions:　3　M　H2SO4,　4　vol.%　H2O2,　55　degrees　C,　and　1　h.　The　S2-　was　oxidized　to　S-0,　which　efficiently　avoided　the　sulfur　pollution　produced　by　existing　technologies.　The　green　solvent　ionic　liquid　[OMIm]　[PF6]　and　the　extractant　Cyanex272　were　employed　for　the　separation　of　the　rare　earths.　The　optimal　extraction　parameters　were　determined　to　be　0.2　mol/L　H2SO4,　0.4　vol.%　of　Cyanex272　in　the　organic　phase,　a　10:1　A/O　ratio,　and　an　extraction　time　of　20　min　at　room　temperature,　under　which,　the　individual　extraction　efficiencies　of　Y,　Eu,　Zn,　and　Al　were　99%,　87,　8%,　and　0%,　respectively,　and　the　separation　factor　of　rare　earth　to　Zn　reached　593.　Additionally,　the　extraction　system　could　be　recycled　and　reused　by　stripping.　The　mechanisms　of　the　leaching　and　extraction　process　were　also　analyzed.　Based　on　a　kinetics　study,　the　leaching　process　was　found　to　follow　the　model　of　diffusion-control　via　the　product　layer,　and　the　apparent　activation　energies　for　Y　and　Eu　were　calculated　to　be　75.86　kJ/mol　and　77.06　kJ/mol,　respectively.　Meanwhile,　a　simulated　leaching　model　based　on　diffusion　through　the　solid　S-0　layer　was　established.　The　synergistic　extraction　mechanism　was　also　discussed,　and　a　cation　exchange　reaction　was　speculated　to　occur　between　the　rare　earth　elements　and　Cyanex272.　The　findings　in　this　study　are　expected　to　provide　an　effective　and　practical　method　for　the　recovery　and　reutilization　of　waste　CRT　phosphors.　(C)　2018　Elsevier　Ltd.　All　rights　reserved.