Low operating pressure hydrophilic MOF-801/Biopolymer interfacial membrane for defluoridation and Co-Organic pollutant remediation

In the context of the energy-water nexus, where the demand for clean water intersects with the imperative for energy-efficient water treatment solutions, this research is dedicated to achieving low-pressure-driven membrane solution. Herein, study uses new class of active MOF-801 fillers materials that are in to stable biopolymers matrix to address the pervasive issue of fluoride contamination in drinking water. By harnessing the synergistic potentials of biogenic chitosan-sodium alginate (CS:SA) multilayers combined with MOF-801 fillers on the polyether sulfone (PES) porous support matrix. This study not only achieves significant improvements in fluoride removal but also enhances with exceptional resistance to fouling. Target specific designed membranes also exhibit versatility in effectively removing various emerging pollutants including fouling agents (BSA, TA, HA) and organic dyes (CR, MO, MB, CV), with a flux of > 40 L·m−2·h−1. The optimized membrane showed exceptional stability under different pH condition showed great separation performance and regeneration capabilities, as well as its effectiveness in defluoridation of groundwater feed. Large scale testing of defluoridation abilities tested for ∼5000 L of feed with a fluoride ion distribution coefficient (Kd) of 45621 mL/g at 4 bars of pressure. Therefore, the optimized membrane stands as an ideal candidate for applications within the energy-water nexus, where sustainability and resource efficiency are of paramount importance.