The work aims to explore the application of the nature Miscanthus floridulus flower fibers (Mf-fiber) in oilwater separation and to realize high-value utilization of the agricultural resources.The wax content and density of the fiber were tested and the morphological characteristics of the fibers were observed.Static contact angles of pure water and different oil agents on the surface of fibers were measured. Static oil absorbency

oil retention performance and reusability of Mf-fibers to different oil agents were analyzed

and the effects of pH value and the temperature of vegetable oil-water system on the oil absorbency of Mf-fibers were discussed. The separation function for oil/water mixture of Mf-fibers was preliminarily probed. The results show that the wax content

density and hollowness of the Mf-fiber are 4.38%

0.669g· cm

-3

and 63% respectively

it possess excellent hydrophobic and lipophilic properties

and the static contact angle of pure water on the surface of the fiber is measured to be 123.7°.The saturated oil absorption ratios for absorbing vegetable oil

lubricant oil and diesel are found to be 15.23

22.15 and 26.65g/g

and the oil retention rates all reach 70.0% after 5 h gravity leaching.After 6 cycles

the oil absorption rates decrease by 31.9%

19.1% and 21.7% respectively.The vegetable oil absorption of fiber under alkaline condition is lower than that under acidic condition and decreases with the increase of vegetable oil-water system’s temperature.The separation efficiency of the fiber for three oil agents reaches 98% after initially filtration

therefore Mf-fibers can be used as oil-water separation material.