A5035588847- Membrane-based Ion Separation Techniques
- Membrane Separation Technologies
- Nanopore and Nanochannel Transport Studies
- Fuel Cells and Related Materials
- Wastewater Treatment and Nitrogen Removal
- Ammonia Synthesis and Nitrogen Reduction
- Solar-Powered Water Purification Methods
- Aquatic Ecosystems and Phytoplankton Dynamics
- Water Treatment and Disinfection
- Wastewater Treatment and Reuse
- Spectroscopy and Quantum Chemical Studies
- Algal biology and biofuel production
- Polymer Surface Interaction Studies
- Chemical Analysis and Environmental Impact
- Electrospun Nanofibers in Biomedical Applications
- Extraction and Separation Processes
- Advanced biosensing and bioanalysis techniques
- Odor and Emission Control Technologies
- Catalysis and Hydrodesulfurization Studies
- Biofield Effects and Biophysics
- Electrochemical Analysis and Applications
- Photoreceptor and optogenetics research
- Biodiesel Production and Applications
- Methane Hydrates and Related Phenomena
- Advanced Thermodynamics and Statistical Mechanics
Technion – Israel Institute of Technology
2015-2024
Yale University
2017-2020
University of New Haven
2020
Ben-Gurion University of the Negev
2011-2014
We reveal the insignificance of advanced materials in further enhancing energy efficiency desalination and suggest more impactful approaches.
The main objective of this study is to examine how the charge densities four monovalent anions-fluoride (F-), chloride (Cl-), bromide (Br-), and nitrate (NO3-)-influence their Donnan (charge) exclusion by a charged nanofiltration (NF) membrane. We systematically studied rejection behavior ternary ion solutions containing sodium cation (Na+) two anions as function pH with polyamide NF In F- Cl- or Br-, was higher than Br- only when solution 5.5, suggesting that (which has density) repelled...
State-of-the-art desalination membranes exhibit high water-salt selectivity, but their ability to discriminate between ions is limited. Elucidating the fundamental mechanisms underlying ion transport and selectivity in subnanometer pores therefore imperative for development of ion-selective membranes. Here, we compare overall energy barrier salt barriers individual transport, showing that cations anions traverse membrane pore an independent manner. Supported by density functional theory...
Machine learning unveils molecular transport mechanisms obscured by entropy-enthalpy compensation in polymeric membranes.
Abstract Considering growing efforts to understand and improve the solute-specific selectivity of nanofiltration (NF) membranes, we explored ion-specific effects that govern charge performance a loose polyamide NF membrane is commonly used for solute-solute separations. Specifically, systematically evaluated zeta potential under different conditions pH, salinity, ionic composition, correlated obtained data with tested similar conditions. Our results identify p K both carboxylic amine groups...
While polyamide reverse osmosis and nanofiltration membranes have been extensively utilized in water purification desalination processes, the molecular details governing solute permeation these are not fully understood. In this study, we apply transition-state theory for transmembrane to systematically break down intrinsic permeabilities of small ions loose tight into enthalpic entropic components using an Eyring-type equation. We analyze trends elucidate phenomena that induce water–salt,...
Ion-selective removal is an important frontier in water purification technologies. For many emerging applications, removing all ions indiscriminately can lead to excessive energy consumption, high levelized cost of water, poor effluent quality, and increased waste brine volume. Electrodialysis capacitive deionization are two electrochemical technologies which promising toward tunable, ion-selective purification. These have fundamentally different ion mechanisms, as electrodialysis leverages...
While the detrimental effect of concentration polarization (CP) on water flux and solute rejection in pressure-driven membrane processes has been extensively explored, impact CP selectivity between solutes these somewhat overlooked. Considering growing interest solute–solute selectivity, this study, we explored ion–ion nanofiltration (NF) membranes. We first show discuss "reversed" observed trend monovalent cations NF, which is opposite to ions' hydrated size mobility solution. Next, apply...
Recent studies have increasingly applied machine learning (ML) to aid in performance and material design associated with membrane separation. However, whether the knowledge attained by ML a limited number of available data is enough capture validate fundamental principles science remains elusive. Herein, we explainable artificial intelligence (XAI) thoroughly investigate learned on mechanisms ion transport across polyamide reverse osmosis (RO) nanofiltration (NF) membranes leveraging 1,585...
Understanding ion solvation in liquid water is critical optimizing materials for a wide variety of emerging technologies, including desalination and purification. In this work, we report systematic investigation comparison solvated K+ NH4+ using first-principles molecular dynamics simulations. Our simulations reveal strong analogy the properties two ions, size shell as well strength. On other hand, find that local structure significantly different; specifically, yields smaller number...