Simulation of fouling and backwash dynamics in dead-end microfiltration: Effect of pore size

Clogging of microporous channels networks: role of connectivity and tortuosity

“…8). These observations are also in agreement with simulations already performed (Ando et al 2012). For the same pore/particle size ratio of 2.5, these authors show a fouling mode in which particles are accumulated on the surface of the membrane without filling the pores and in which a cake layer forms across the entire filtration area.…”

“…However, these approaches have been developed for dilute systems and do not account for multibody interparticle interactions occurring near a pore entrance. More recently, Ando et al (2012) performed simulations accounting multiple surface interaction between particles at a pore entrance and showed different fouling modes according to the pore/particle size ratio: for a ratio of 3.6, initially particles filled the pores and then form a cake layer on the surface of membrane, whereas when the ratio is lower (2.5), particles are accumulated on the surface of the membrane without filling the pores and a cake layer forms across the entire filtration. These simulations also show the effect of these clogging structures on the efficiency of backwash sequences.…”

Analytical modeling of steady-state filtration process in an automatic self-cleaning filter

“…Backflushing is common in filtration systems, e.g. (Ando et al, 2012;Bacchin et al, 2011;Benmachou et al, 2003;Berman, 1953;Duignan and Nash, 2012) to name only a few, to clean-up the filter surface periodically. The interesting and distinguishing feature of an automatic filter is that the backflushing occurs without interruption of the filtration process.…”

Separation of metal ions by complexation-microfiltration process

“…Može se videti da se opseg apsorpcije karbonil grupe sa promenom pH vrednosti širi i pomera ka većim vrednostima (195)(196)(197)(198)(199)(200)(201)(202)(203)(204)(205)(206)(207)(208)(209)(210) Na osnovu spektara, može se zaključiti da anjoni takođe imaju veliki uticaj na proces kompleksiranja. U slučaju hlorida do najvećih strukturnih promena dolazi u kiseloj, a kod acetata u baznoj sredini.…”

“…Onečišćenje se formira zbog blokiranja pora i formiranja filtracionog kolača. Zbog toga je velika pažnja posvećena istraživanju mehanizama [64,73,75,76,[187][188][189][190] koji dovode do pada fluksa [67,68,69,128,191,192], koncentracione polarizacije [64] i onečišćenja [64, 73-81, 87, 187, 188, 193-196], kao i procesima čišćenja membrana [81,87,197,198].…”