Review on Membranes for the Filtration of Aqueous Based Solution: Oil in Water Emulsion

Abstract

This review provides insight into the application of membrane technology in the filtration of aqueous solution generated from different industries. Due to the ever-evolving and demanding strict attention to rules and regulation for discharging of oily waste water, researchers have investigated membrane technology as a best and suitable method for separation of oil in oil-water emulsion. Membrane-based separation processes are becoming a novel material to treat oily wastewater due its facile operation process and effective in removal of oil from oil/water emulsion. This review summarizes or highlights the recent development of advanced membrane technology employed to separate oil in water emulsion using polymer and ceramic-based membranes and modified membranes via blending, coating, grafting and other techniques. Moreover, integrated membranes system to achieve high separation efficiency over single membrane process is also discussed. Perspective and conclusions concerning the future development of filtration membranes for treatment of oil in water mixture are also provided. A review of membrane technology for oil/water emulsion treatment could have a substantial contribution in developing novel membranes and modification of the existed membranes.

Innovative Optical-Sensing Technology for the Online Fouling Characterization of Silicon Carbide Membranes during the Treatment of Oily Water

“…The UF membrane therefore achieves an excellent oil removal efficiency of >98% at both CFVs (Table 5). [15]. At a constant TMP of 2.0 bar, the higher CFV increases the performance of the SiC UF membrane without limiting its oil retention capacity over the entire duration of the filtration experiment (~6 h).…”

“…Organic/inorganic membrane separation technology has emerged as a promising alternative for industrial wastewater treatment, particularly for the treatment of PW [15,16]. The advantages of membrane filtration include low energy consumption, a small footprint, no requirement for additional chemicals during the treatment process, and consistent effluent quality [17].…”

“…Figure 7a shows the decline in permeate flux and the resulting permeate oil concentrations for a 40 nm UF membrane during the treatment of an OMS with an initial oil concentration of 30 ppm. We tested the effect of two different CFVs [15]. At a constant TMP of 2.0 bar, the higher CFV increases the performance of the SiC UF membrane without limiting its oil retention capacity over the entire duration of the filtration experiment (~6 h).…”

Characterization of Mussel Inspired Surface Modified and Metal Chelated Polymer Membrane

“…Authorities are trying hard to handle this situation by increasing the environmental regulations worldwide. This situation motivates many efforts to look for a highly efficient and cost-effective method to purify contaminated wastewater [1] With high separation efficiency, using low energy, simplicity and ease of operation; polymer membrane has been rapidly studied to be use in wastewater treatment technology [2] [3]. However, membranes are limited in term of severe fouling by contaminants that is causing rapid flux decline and making the process not economically feasible [4].…”

“…In order to minimize fouling, we need the membrane to be favorable to water compared to other components. Therefore; researchers are looking for modifying method of the membrane surface in order to increase the hydrophilicity [2] [3]. Apart from that, modification of membrane surface increase and verifies the membrane's potential.…”