RTK Radio

Due to unstable oil price situation in the world market, many countries have been looking for alternative energy to substitute petroleum. Researches on the use of waste vegetable oils (WVO) as fuel substitutes in diesel engines have been done in many countries with much success. Biofuel is diesel fuel that is made by reacting waste [...]

First what are these two types of filtering systems?
WVO (waste vegetable oil) centrifuge:
A centrifuge is a piece of equipment, generally driven by a motor that puts WVO in rotation around a fixed axis, applying a force perpendicular to the axis. The oil entrifuge works using the sedimentation principle, where the centripetal acceleration is used to [...]