Chemical cleaning of mullite ceramic microfiltration membranes which are fouled during oily wastewater treatment

Elaboration and characterization of novel two-layer tubular ceramic membranes by coating natural zeolite and activated carbon on mullite-alumina-zeolite support: application for oily wastewater treatment

“…where C p and C f denote for the concentration of oil in permeation flow and feed, respectively. Cleaning of the membranes was quantified through measurements of the PF before and after cleaning, and the flux recovery percentage was calculated as follows: where PFwi, PFww, and PFwc are the initial distilled water flux of the fresh, fouled, and chemically cleaned membranes, respectively [21,22].…”

Fabrication, characterization, fouling behavior and performance study of ceramic microfiltration membranes for oily wastewater treatment

“…Releasing this type of wastewater into the environment without treatment can contaminate soil and water and cause serious environmental problems for humans, plants and animal species [1,2]. Many methods of oily wastewater treatment have been developed by researchers in response, including flotation, coagulation, adsorption, sedimentation and membrane processes [3][4][5]. Among these methods, the membrane separation process is one of the most promising, since it can be used widely for oily wastewater treatment due to such advantages as its high separation efficiency, low energy consumption, extremely compact design and small space requirements [6].…”

Influence of sintering temperature on the development of alumina membrane shaped by centrifugal casting for gas separation

“…Aluminum oxide or alumina (Al 2 O 3 ) is one of the most used oxides for the production of inorganic (ceramic) membranes because of its great properties and high availability [2]. Among the techniques for preparing ceramic membranes are the extrusion, a widely studied and widespread method [7][8][9][10], the isostatic pressing, and the centrifugal casting [11,12], a technique typically used to cast thin-walled metallic cylinders, where a molten metal is centrifugally thrown against the inner wall of a cylindrical mold at a high speed, and solidifies after cooling. The centrifugal casting produces ceramic membranes structures with distinct properties when compared to the other techniques.…”