Microfiltration of Oily Waste Water: A Study of Flux Decline and Feed Types

1st International Symposium of Indonesian Chemical Engineering 2018

Sutrisna, P.D.^1 ; Candrawan, J.^1 ; Tangguh, W.W.^1

Department of Chemical Engineering, University of Surabaya, Jl Raya Kalirungkut, Surabaya

60293, Indonesia^1

关键词: Concentration polarisation;    Deep bed filtration;    Fouling phenomena;    Industrial separation;    Membrane performance;    Membrane separation;    Micro-filtration membranes;    Oil-in-water emulsions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/543/1/012079/pdf
DOI  :  10.1088/1757-899X/543/1/012079

来源: IOP

【 摘 要 】

In recent years, membrane separation techniques gain an increasing interest to be applied in many industrial separation processes, such as the separation of produced water in petroleum industry and the treatment of used oil and used cooking oil. Used oil and used cooking oil consist of suspended solids in addition to emulsion. Both ultrafiltration and microfiltration have been used to separate oil from water. The challenges of oil-in-water emulsion separation include the possibility of big oil drops deforming through the slot or pore of membrane thus reduce the oil rejection. In addition, concentration polarisation and fouling phenomena are considered as negative attributes for membrane performances. This research applied flat sheet microfiltration membranes to treat used oil and used cooking oil. The performances of membranes in terms of flux reductions were evaluated and analysed using filtration model. Experimental results showed the decline of permeate flux with time indicating the formation of polarisation layer on the surface of the membrane. In addition, complete blocking and deep bed filtration explained the flux behavior of used oil and used cooking oil filtration, respectively.