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 microbalancePilot Scale Demonstration of Low-Salt-Rejection Reverse Osmosis (LSRRO) Desalination of High Salinity Brines
Van Houghton B, Rosenblum J, Lampi K, Beaudry E, Herron J, del Cerro M, De Finnda C, Elimelech M, Gilron J, Cath T. Pilot Scale Demonstration of Low-Salt-Rejection Reverse Osmosis (LSRRO) Desalination of High Salinity Brines. ACS ES&T Water 2024, 4: 5089-5104. DOI: 10.1021/acsestwater.4c00673.Peer-Reviewed Original ResearchLow-salt-rejection reverse osmosisSeawater reverse osmosisLow salt rejectionReverse osmosisWater recoveryConventional seawater reverse osmosisHydraulic pressureTreating hypersaline brinesMembrane fabricationPilot scale demonstrationsHigh-salinity brineThermal desalinationFeed streamProcess configurationsScale demonstrationOsmosisStream compositionWater permeabilityWater fluxNaCl solutionTDS concentrationDesalinationMembrane integrity testEnergy consumptionSalinity brineMolecular simulations of organic solvent transport in dense polymer membranes: Solution-diffusion or pore-flow mechanism?
He J, Fan H, Elimelech M, Li Y. Molecular simulations of organic solvent transport in dense polymer membranes: Solution-diffusion or pore-flow mechanism? Journal Of Membrane Science 2024, 708: 123055. DOI: 10.1016/j.memsci.2024.123055.Peer-Reviewed Original ResearchDense polymer membranesPolymer membranesOrganic solventsSolution-diffusion modelHigh-performance polymer membranesSolvent transportFractional free volumeMolecular-level guidanceOrganic solvent nanofiltrationMolecular dynamics simulationsPore flow mechanismNon-equilibrium molecular dynamics simulationsMembrane pore sizeSolvent sizeSolvent permeanceSolvent nanofiltrationSeparation applicationsTransport mechanisms of waterMolecular simulationsFree volumeDynamics simulationsWater transport mechanismSolventReverse osmosisSolution-diffusionThe solution-diffusion model for water transport in reverse osmosis: What went wrong?
Fan H, Heiranian M, Elimelech M. The solution-diffusion model for water transport in reverse osmosis: What went wrong? Desalination 2024, 580: 117575. DOI: 10.1016/j.desal.2024.117575.Peer-Reviewed Original ResearchSolution-diffusion modelRO membranesReverse osmosisWater transport mechanismPore flow modelDesalination membranesDesalination technologiesFrictional interactionTransport mechanismWater transportConcentration gradient of waterFree volumeMembrane poresEnergy efficiencyOsmosisLow costPressure gradientState-of-the-artTheoretical findingsWater flowState-of-the-art desalination technologiesConcentration gradientPorePolyamide reverse osmosis membrane compaction and relaxation: Mechanisms and implications for desalination performance
Wu J, He J, Quezada-Renteria J, Le J, Au K, Guo K, Xiao M, Wang X, Dlamini D, Fan H, Pataroque K, Suleiman Y, Shahbazmohamadi S, Elimelech M, Li Y, Hoek E. Polyamide reverse osmosis membrane compaction and relaxation: Mechanisms and implications for desalination performance. Journal Of Membrane Science 2024, 706: 122893. DOI: 10.1016/j.memsci.2024.122893.Peer-Reviewed Original ResearchPA layerCrosslinking degreeNEMD simulationsComposite RO membranePA RO membranesComposite reverse osmosisRelaxation behaviorMechanism of compactionFree volume changesViscous flow of waterDesalination performanceRO membranesReverse osmosisSelective layerInterfacial polymerizationMembrane compactionViscoelastic propertiesViscous flowWater permeationPA filmInitial permeabilityMonomer ratioFlow of waterPermeation experimentsSimulationHeat diffusion during thin-film composite membrane formation
Deshmukh A, Lienhard J, Elimelech M. Heat diffusion during thin-film composite membrane formation. Journal Of Membrane Science 2024, 696: 122493. DOI: 10.1016/j.memsci.2024.122493.Peer-Reviewed Original ResearchThin-film compositeInterfacial temperature riseInterfacial polymerizationInterfacial temperatureComposite membrane formationProperties of solventsHigh separation performanceThin-film composite membranesTemperature riseTransient heat conduction modelThermal propertiesRobust mechanical supportPolymeric supportCombination of analytical solutionsSelective layerTransient heat conductionThermal effusivitiesSeparation performanceChemical structureReaction interfaceHeat conduction modelInterlayer materialReverse osmosisMetal interlayerSupport layerTheory of expansion and compression of polymeric materials: Implications for membrane solvent flow under compaction
Fan H, Elimelech M, Biesheuvel P. Theory of expansion and compression of polymeric materials: Implications for membrane solvent flow under compaction. Journal Of Membrane Science 2024, 697: 122576. DOI: 10.1016/j.memsci.2024.122576.Peer-Reviewed Original ResearchPolymer layerPressure-driven membrane separation processesLiquid flowCompression of porous materialsPorous materialsOrganic solvent nanofiltrationCross-linked polymer networksMembrane separation processesFlory-Rehner theoryDirection of liquid flowPolymer chainsSolvent nanofiltrationReverse osmosisPolymer networkPolymeric materialsPolymerSeparation processThin membraneFinite stretchSupport structureSolvent flowTheories of expansionTemperature-dependentCompactionMaterialsPressure-driven membrane desalination
Liu W, Livingston J, Wang L, Wang Z, del Cerro M, Younssi S, Epsztein R, Elimelech M, Lin S. Pressure-driven membrane desalination. Nature Reviews Methods Primers 2024, 4: 10. DOI: 10.1038/s43586-023-00287-y.Peer-Reviewed Original ResearchMembrane fabricationReverse osmosisThin-film composite polyamide membranesProcess configurationsEvaluate membrane performanceMembrane desalinationMembrane performanceNanofiltration membranesInterfacial polymerizationPolyamide membranesInterfacial propertiesNanofiltrationOsmosisSystem modelFabricationPerformance evaluationExperimental procedurePerformanceConfigurationDesalinationApplicationsSaline waterProcess