LAUSR

An innovative separation system based on dielectric electrophoresis (DEP-on-a-chip system) is proposed to separate different particulate matters. A discrete phase model (DPM) and coupling model was utilized to simulate the movement characteristics in liquid-solid two phase flows and gas-liquid-solid three phase flows, respectively. In liquid-solid fluid systems, the effect of the liquid viscosity and density on the movement displacement of particles was studied. In gas-liquid-solid fluid systems, the effect of physical parameters, such as inlet velocity, liquid viscosity, liquid density and surface tension force, on the trajectory of PM2.5 (particulate matter 2.5) and PM10 was discussed. Conclusively, the theoretical separation time of the DEP-on-a-chip system is successfully achieved at the second level. The optimized physical parameters with the inlet velocity around 1.0 m/s, the liquid viscosity of 1×10−5 Pas, the liquid density of 1500 kg/m3 and the surface tension of 0.065 N/m for the separation system are established.