Research Progress of Particles Deposit and Detach in Porous Media

Diesel particle filter (DPF) is an effective method to reduce the particle emission from diesel engine. The filtration and emission performancesare related to the deposition and desorption processes. This paper summarizes research progressof the deposition and desorption processes of particle on single framework, double frameworks, single-layerand double-layers filter in recent years including the macroscopic physical characteristics and microstructure characteristics. The mutual influence of the dust deposition on the particle deposition and desorption characteristics are summarized. The study forthe particulate matter's deposition and desorption processes is one of the research direction of future work. The results of above work are benefit for optimizing the structure and operating parameters of filter media as well as predicting the filtration performance.