Transport Properties of Thin Film Nanocomposite Membrane Encompassing Polyvinyl Pyrrolidone Based Graphene Oxide Nanofiller: Optimization of Process Variables for the Separation of Oily Wastewater

The present work study focusing on the incorporation of PVP-GO (polyvinylpyrrolidone- graphene oxide) nano-fillers into thin-film nanocomposite (TFN) membranes to enhance their performance in oily wastewater treatment. This study demonstrates advancements in membrane technology by integrating nanofillers and optimizing operational parameters through statistical modeling. The study utilized Central Composite Design (CCD) and Response Surface Methodology (RSM) to optimize the separation process parameters and assess the performance of the membrane. This kind of study is indicative of efforts to push the boundaries of membrane technology by optimizing both the material properties (through nano-filler incorporation) and the operational conditions (through statistical methods like CCD and RSM) to achieve superior separation performance in complex wastewater treatment scenarios. Three models correlating the independent parameters including, feed solution concentration (۱۰۰۰-۲۰۰۰ ppm), draw solution concentration (۱-۳ M) and flowrate (۲۰۰-۴۰۰ mL/min) with the responses including, permeate flux (Jw), reverse salt flux (Js) and Js/Jw selectivity were developed based on the experimental data. The optimum parameters for achieving the highest separation performances were obtained at feed solution concentration of ۱۹۹۹.۹۹۴ ppm, draw solution concentration of ۲.۸۹۳ M and flowrate of ۳۹۰.۹۹۷ ml/min, which resulted in water permeability of ۵۹.۶۵۸ LMH, ۱.۶۳۰ gMH and Js/Jw selectivity of ۰.۰۲۳ g/L. The deviation of the corresponding experimental data was found to be in an acceptable range, confirming the suitability of RSM for predicting the membrane performance and consequently optimizing the separation process variables.

کلیدواژه ها:

PVP modified GO ، Thin film nanocomposite membrane ، Oily wastewater separation ، Response Surface Methodology