Optimization of Pervaporative Desalination with Zirconia Based Metal Organic Framework Filled Nanocomposite Membrane

Unugul T., UĞUR NİGİZ F., Karakoca B.

JOURNAL OF POLYMERS AND THE ENVIRONMENT, vol.31, no.10, pp.4288-4301, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 31 Issue: 10
  • Publication Date: 2023
  • Doi Number: 10.1007/s10924-023-02879-x
  • Journal Name: JOURNAL OF POLYMERS AND THE ENVIRONMENT
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, BIOSIS, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Environment Index, Geobase, Greenfile, Metadex, Pollution Abstracts, Civil Engineering Abstracts
  • Page Numbers: pp.4288-4301
  • Keywords: Pervaporative desalination, Polylactic acid, Response surface methodology, Zirconia-based metal organic framework, ASSISTED SOLVOTHERMAL SYNTHESIS, COMPOSITE MEMBRANES, WATER DESALINATION, PERFORMANCE, FABRICATION, GRAPHENE, ACID), CO2
  • Kocaeli University Affiliated: Yes

Abstract

In this study, a freestanding asymmetric polylactic acid-based MIL 140A loaded nano-composite membranes were prepared and tested for pervapoative desalination. The chemical and morphological properties of the membranes were characterized by using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The effects of permeate pressure (10, 20, 30 mbar), feed temperature (40, 50, 60 degrees C), and NaCl concentration (2, 4, 6 wt.%) on the flux and the rejection were experimentally determined. In order to determine the effect of operation parameters on desalination, an optimization study was done using the Box-Behnken design (BBD) of Response Surface Method (RSM) and a statistical model was created. In addition to optimization, experimental studies were also carried out between the limit factors and the results were compared with the model. The highest flux was obtained as 5.40 kg/m(2)h accompanied with the rejection of 99.87% when at the lowest NaCl content of 2 wt.%, and the highest temperature of 60 degrees C. The rejection value was greater than 99.7% in all experiments. The highest flux was obtained as 5.40 and 5.44 kg/m(2)h, respectively, in the experimental and model study at the NaCl content of 2 wt.%, the temperature of 60 degrees C, and downstream pressure of 10 mbar. It was seen that the most suitable statistical model equation for the experimental results was the second-order quadratic model, and the experimental data were agreed with 99.41% of accuracy.