Effects of pore size on separation mechanisms of microfiltration of oily water, using porous glass tubular membrane

Adsorptive fouling of organic solutes simulating sweetwater solutions on ultrafiltration membranes

“…Nevertheless, the severe fouling for larger cut-off membranes was mainly due to the formation of a wax layer on the membrane surface with the oil droplets coalescences. In addition, the small droplets participate in the pore sealing and occlude the membrane pores, and lead to severe fouling [21][22]. Therefore, as the larger pores become sufficiently clogged, then the solutes deposit onto the surface and form cake, which results in a higher RFR.…”

Highly Efficient Purification of Finely Dispersed Oil Contaminated Waters by Coagulation/Flocculation Method and Effects on Membrane Filtration

“…Membrane separation (micro- [15,[17][18][19][20][21][22][23][24][25] and ultrafiltration [13,18,23,[26][27][28][29]) can also be efficient for the treatment of these kind of water pollutants, however membrane fouling [10,30] is a general problem (not only in case of oily contaminants), which inhibit the economic utilization in many cases. Microfilters have relatively higher fluxes compared to ultrafiltration, but the latter results in higher purification efficiency.…”

Mathematical modeling of flux decline in ultrafiltration

“…There are several sources of oily wastewaters such as crude oil spill from wrecked tankers, oily bilge water, leak of oil caused by handling of crude cargo at the port and along the coast, and oily wastewater discharged from several industries such as steel industry, machine industry, petroleum refinery, petrochemical industry, textile industry, metal industry, etc. [1,2]. The particularly stable emulsions are generated during several mechanical operations, such as grinding, rolling, alkaline degreasing, machining and transportation.…”

“…Obvious advantages of membrane processes are lower capital cost, absence of chemical addition, etc. [2]. UF has been considered as a promising technology to solve many separation problems in various industries for decades, however growth of this technology has fell far behind the initial anticipation and it is due to membrane fouling.…”