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  • Open Access

    ARTICLE

    Performance Evaluation of Hierarchically Structured Superhydrophobic PVDF Membranes for Heavy Metals Removal via Membrane Distillation

    Pooja Yadav1,*, Ramin Farnood2, Vivek Kumar1,*

    Journal of Polymer Materials, Vol.42, No.4, pp. 1181-1197, 2025, DOI:10.32604/jpm.2025.072564 - 26 December 2025

    Abstract Heavy metal contamination in water sources is a widespread global concern, particularly in developing nations, with various treatment approaches under extensive scientific investigation. In the present study, we fabricated electrospun composite polyvinylidene fluoride (PVDF) nanofibrous membranes exhibiting hierarchical surface roughness and superhydrophobicity for the removal of heavy metal ions via vacuum membrane distillation (VMD) process. The membranes were prepared by incorporating optimized dosing of silica nanoparticles, followed by a two-step membrane modification approach. These membranes exhibited notable characteristics, including elevated water contact angle (152.8 ± 3.2°), increased liquid entry pressure (127 ± 6 kPa), and… More > Graphic Abstract

    Performance Evaluation of Hierarchically Structured Superhydrophobic PVDF Membranes for Heavy Metals Removal via Membrane Distillation

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  • Open Access

    ARTICLE

    Removal of Cu(II), Pb(II), Mg(II), and Fe(II) by Adsorption onto Alginate/Nanocellulose Beads as Bio-Sorbent

    Ragab E. Abou-Zeid1, Korany A. Ali2, Ramadan M. A. Gawad2, Kholod H. Kamal3, Samir Kamel1, Ramzi Khiari4,5,6,*

    Journal of Renewable Materials, Vol.9, No.4, pp. 601-613, 2021, DOI:10.32604/jrm.2021.014005 - 01 February 2021

    Abstract

    Alginate blended with cellulose nanocrystals (CNC), cellulose nanofibers (CNF), and tri-carboxylate cellulose nanofibers (TPC-CNF) prepared and encapsulated in the form of microcapsules (bio-polymeric beads). The cellulosic nanomaterials that used in this study were investigated as nanomaterials for wastewater treatment applications. Batch experiments were performed to study the removal of copper, lead, magnesium, and iron from aqueous solutions by the prepared beads. The effects of the sorbent dosage and the modified polymers on the removing efficiency of the metal cations were examined. Atomic absorption was used to measure the metal ions concentrations. The modified bio-polymeric beads

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