Salt partitioning and transport in polyamide reverse osmosis membranes at ultrahigh pressures
Pataroque K, Wu J, He J, Fan H, Mahajan S, Guo K, Le J, Au K, Wang L, Li Y, Hoek E, Elimelech M. Salt partitioning and transport in polyamide reverse osmosis membranes at ultrahigh pressures. Journal Of Membrane Science Letters 2024, 4: 100079. DOI: 10.1016/j.memlet.2024.100079.Peer-Reviewed Original ResearchSalt permeanceSalt partition coefficientReverse osmosisPolyamide reverse osmosis membranesAffecting membrane performancePolyamide layer thicknessFeed salt concentrationReverse osmosis membranesQuartz crystal microbalanceDead-end cellStructure-performance relationshipRO membranesMembrane performancePolyamide layerOsmosis membranesWater transport mechanismFeed salinityOsmotic deswellingFrictional interactionPore sizeFeed concentrationNon-equilibrium molecular dynamics simulationsLayer thicknessPermeanceCrystal microbalanceExtended Donnan model for ion partitioning in charged nanopores: Application to ion-exchange membranes
Wang R, Biesheuvel P, Elimelech M. Extended Donnan model for ion partitioning in charged nanopores: Application to ion-exchange membranes. Journal Of Membrane Science 2024, 705: 122921. DOI: 10.1016/j.memsci.2024.122921.Peer-Reviewed Original ResearchIon-exchange membranesExchange membraneInteraction of ionsCoulomb interaction of ionsIon partitioningCharged pore wallsElectrostatic modelChemical potential of ionsArrangement of ionsPore solutionPotentials of ionsDonnan modelDonnan equationPore sizeCylindrical poresPore wallsDistribution of ionsPolymer chargeEffect of ionsAqueous solutionPoreIon activity coefficientsSalt concentrationIonsGeometric factorsUltrastable ceramic-based metal–organic framework membranes with missing linkers for robust desalination
Dong Y, Lyu Q, Lin L, Violet C, Lin B, Han Y, Tang C, Yu H, Elimelech M. Ultrastable ceramic-based metal–organic framework membranes with missing linkers for robust desalination. Nature Water 2024, 2: 464-474. DOI: 10.1038/s44221-024-00218-5.Peer-Reviewed Original ResearchHigh-performance desalination membranesPolymeric membranesWater treatment applicationsMetal–organic framework membranesMissing-linker defectsUiO-66 membraneDesalination membranesLow energy barrierMolecular simulation resultsHarsh chemical conditionsMissing linkersUiO-66Water clustersIndustrial wastewater treatmentEnergy barrierIncreased water fluxDesalination performanceDesalination applicationsTreatment applicationsAlkaline conditionsNanoporous membranesInsufficient stabilityWastewater treatmentPore sizeSimulation results