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<p>In this study, cellulose acetate (CA) membranes were fabricated and modified with polyethylene glycol (PEG 400) to enhance their performance in wastewater treatment. Membranes with PEG concentrations of 0–20 wt% were prepared by phase inversion and systematically evaluated. Results showed that increasing PEG concentration enhanced porosity and hydrophilicity, leading to a substantial increase in water flux (from 11.77 to 53.05&#xa0;L/m²·h). However, higher PEG loadings reduced solute rejection, with humic acid and phosphate rejection decreasing to 77.07% and 48.36%, respectively. The CA/PEG2 membrane (10 wt%) achieved the best compromise, offering a water flux of 28.66&#xa0;L/m²·h with humic acid and phosphate rejection of 79.56% and 45.69%. These findings highlight that moderate PEG incorporation provides an effective balance between permeability and selectivity, confirming the potential of CA/PEG membranes as cost-effective and scalable solutions for practical wastewater treatment applications.</p>

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Enhancement of ultrafiltration membranes based on cellulose acetate for wastewater treatment

  • 期刊论文

  • 发表日期：

    2026年2月18日

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  • Ayman Samir El-abd,
  • Adel Mohamed H. Elmetwalli,
  • Asaad Derbala,
  • Eman S. Mansor,
  • Ahmed A. Hussein

摘要

In this study, cellulose acetate (CA) membranes were fabricated and modified with polyethylene glycol (PEG 400) to enhance their performance in wastewater treatment. Membranes with PEG concentrations of 0–20 wt% were prepared by phase inversion and systematically evaluated. Results showed that increasing PEG concentration enhanced porosity and hydrophilicity, leading to a substantial increase in water flux (from 11.77 to 53.05 L/m²·h). However, higher PEG loadings reduced solute rejection, with humic acid and phosphate rejection decreasing to 77.07% and 48.36%, respectively. The CA/PEG2 membrane (10 wt%) achieved the best compromise, offering a water flux of 28.66 L/m²·h with humic acid and phosphate rejection of 79.56% and 45.69%. These findings highlight that moderate PEG incorporation provides an effective balance between permeability and selectivity, confirming the potential of CA/PEG membranes as cost-effective and scalable solutions for practical wastewater treatment applications.