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<p>Today, water pollution and the shortage of freshwater resources are among the most urgent global issues. As a result, researchers have paid close attention to methods for purifying and improving the reuse of industrial wastewater. In this study, a natural polymer membrane made from chitosan, which is derived from shrimp shells, was used to treat produced water. To improve the performance of chitosan membranes, a mixed matrix membrane composed of chitosan and TiO<sub>2</sub> nanoparticles (used as the filler) was synthesized, and its effectiveness in treating produced water was tested under different operational conditions. The embedding of TiO<sub>2</sub> NPs in the chitosan matrix improved the pure water flux and flux recovery ratio by about 106.6% and 87.6%, respectively. The performance of the developed mixed matrix membrane (3&#xa0;M) was examined by analyzing the effects of pressure, initial pollutant concentration (COD), and volumetric flow rate using a central composite design. Results showed that the 3&#xa0;M membrane, under optimal conditions (operation pressure: 3.86&#xa0;bar, initial COD concentration: 1975.1&#xa0;mg/L, and volumetric flow rate: 157.98&#xa0;ml/min), can reduce COD, TDS, and TSS of inlet wastewater by 90.05%, 86%, and 84%, respectively. Testing the membrane over 10 consecutive cycles revealed a 22% decline in wastewater treatment efficiency after 10 cycles.</p>

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Treatment of produced water using a chitosan/TiO2 mixed matrix membrane derived from shrimp shells

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月6日

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  • Fatemeh Ansari,
  • Hakimeh Sharififard,
  • Parviz Darvishi,
  • Hajir Karimi

摘要

Today, water pollution and the shortage of freshwater resources are among the most urgent global issues. As a result, researchers have paid close attention to methods for purifying and improving the reuse of industrial wastewater. In this study, a natural polymer membrane made from chitosan, which is derived from shrimp shells, was used to treat produced water. To improve the performance of chitosan membranes, a mixed matrix membrane composed of chitosan and TiO2 nanoparticles (used as the filler) was synthesized, and its effectiveness in treating produced water was tested under different operational conditions. The embedding of TiO2 NPs in the chitosan matrix improved the pure water flux and flux recovery ratio by about 106.6% and 87.6%, respectively. The performance of the developed mixed matrix membrane (3 M) was examined by analyzing the effects of pressure, initial pollutant concentration (COD), and volumetric flow rate using a central composite design. Results showed that the 3 M membrane, under optimal conditions (operation pressure: 3.86 bar, initial COD concentration: 1975.1 mg/L, and volumetric flow rate: 157.98 ml/min), can reduce COD, TDS, and TSS of inlet wastewater by 90.05%, 86%, and 84%, respectively. Testing the membrane over 10 consecutive cycles revealed a 22% decline in wastewater treatment efficiency after 10 cycles.