Influence of Transmembrane Pressure on Microfiltration of Suspensions

Abstract

The influence of transmembrane pressure on the permeate flux, and the critical and limiting fluxes in microfiltration of two sorbents Bentonite a natural sorbent, montmorillonite based clay and Lewatit S1468 a synthetic sorbent, styrene-divinylbenzene based copolymer were studied. An asymmetric single-channel inorganic ceramic membrane based on α-Al2O3 was used. The experimental data were obtained by continuous microfiltration equipment. According to the results the limiting flux ranged from 37 to 70 l.m-2.h-1 for Bentonite suspensions. It was not possible to estimate the limiting flux for Lewatit S1468 suspension.

Influence of Two-Phase Liquid-Gas Flow on Permeate Flux through Ceramic Membranes

“…A more significant difference was recorded in the permeate flux depending on the flow rate of liquid and gaseous phases. Compared to the single-phase flow (Bakalár et al, 2013a;2013b;2013c) the flux of the permeate achieved the steady state in longer time period but at a higher rate. The increase in two-phase flow was 4 and 5.5% compared to single-phase flow at 1.4 and 2.2 m s −1 of the gaseous phase rate, respectively, for both the experiments without and with adsorbed zinc.…”

“…The flux (Fig. 9) was higher by 22 and 25% compared to a single-phase flow (Bakalár et al, 2013b;2013c) at 0.4 and 1.1 m s −1 of the gaseous phase rate, respectively.…”