Improved Oil-Water Separation Performance of Polylactic Acid by Halloysite Nanotube Incorporation

Abstract

In this study, polylactic acid (PLA)-based nanocomposite membranes were prepared and used for the purification of simulated oil/water based wastewater. The lubricant oil (lubricating oil) was chosen as model oil. In order to increase the hydrophilicity of the membrane and improve its filtration performance, 0-20 wt.% of Halloysite nanotubes (HNT) were added into the PLA matrix. The effects of the HNT ratio on the oil/water swelling ratios (adsorption ratio), water flux, and oil rejection were determined. According to the results, optimal flux-oil rejection results were obtained with 5 wt.% of HNT incorporated nanocomposite membranes. The highest oil rejection of 94.9% was obtained using 5 wt.% of HNT incorporated membrane with a flux value of 1542.9 LMH.

Keywords

• Nanocomposite membrane
• polylactic acid membrane
• halloysite nanotube
• oil- water separation
• lubricating oil

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