Effect of additives on morphology and performance of mullite-alumina microfiltration membranes

In this research, effects of hydraulic pressure (200,400,600 bar), content of α-alumina (25, 30, 35 and 40%) and additives on flux and porosity of microfiltration membranes (MF) were investigated. To complete mullite phase formation, α-alumina was added to Kaolin clay. CMC (Carboxymethyl cellulose), PVA (Polyvinyl acetate) and PEG (Polyethylene glycol) were also added to increase porosity and permeation flux of the membranes. Many experiments were carried out to understand the effects of different parameters. In order to determine the best operating conditions, full factor method was used. MF membranes containing 40% alumina and 1.5 % w/w PVA were shaped under 400 bar pressing pressure and sintered at 1200 °C for 5 h. Water permeation flux and porosity of these membranes were evaluated as 345.2 kg/m2 .h and 29.6%, respectively.

This article is published in peer review journal and open access journal, International journal of research in engineering and innovation (IJREI) which have a high impact factor journal for more details regarding this article, please go through our journal website.

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