The　aim　of　the　present　work　was　to　study　the　interaction　of　ferrate　oxidation　and　photocatalytic　oxidation　in　terms　of　dibutyl　phthalate　(DBP)　degradation　in　aqueous　solution,　in　which　three　sets　of　experiments　were　carried　out,　including　(1)　ferrate　oxidation　alone,　(2)　photocatalytic　oxidation　alone,　and　(3)　the　combination　of　ferrate　oxidation　and　photocatalytic　oxidation.　Laboratory　experiments　demonstrated　that　ferrate　oxidation　and　phtotocatalytic　oxidation　of　DBP　in　aqueous　solution　are　relatively　slow　processes.　However,　the　presence　of　TiO2　and　ferrate　together　under　UV　illumination　accelerated　the　DBP　degradation　significantly.　Since　ferrate　was　reduced　quickly　due　to　the　presence　of　TiO2　and　UV　irradiation,　the　DBP　degradation　reaction　can　be　divided　into　two　phases.　During　the　first　30　min　(Phase　1)　the　DBP　was　degraded　by　both　photocatalytic　oxidation　and　ferrate　oxidation,　and　by　interactive　reactions.　After　30　min　(Phase　2),　the　ferrate　residual　had　declined　to　a　very　low　level　and　the　photocatalytic　reaction　was　the　dominant　mechanism　of　further　DBP　degradation.　The　influence　of　three　main　factors,　ferrate　dosage,　TiO2　dosage　and　pH,　on　the　DBP　degradation　were　investigated　in　order　to　understand　the　reaction　mechanism　and　kinetics.　©　2008　American　Chemical　Society.