3Medeni Maskan, HalilI Bagci. Effect of different adsorbents on purification of used sunflower seed oil utilized for frying [J]. European Food Research and Technology, 2003,217(3):215-218.
4V V Ostrikov, G D Matytsin, S A Nagornov. Regeneration of Used Lubricating Oils [J]. Chemical and Petroleum Engineering, 38(3/4): 138-142.
5ASTMD4485-01 Standard Specification for Performance of Engine Oil [S]. 2001.
