A5074306545- Membrane Separation Technologies
- Membrane-based Ion Separation Techniques
- Advanced Photocatalysis Techniques
- Fuel Cells and Related Materials
- Catalytic Processes in Materials Science
- Ammonia Synthesis and Nitrogen Reduction
- Environmental remediation with nanomaterials
- Membrane Separation and Gas Transport
- Graphene and Nanomaterials Applications
- Wastewater Treatment and Reuse
- TiO2 Photocatalysis and Solar Cells
- MXene and MAX Phase Materials
- Solar-Powered Water Purification Methods
- Arsenic contamination and mitigation
- Groundwater and Isotope Geochemistry
- Enhanced Oil Recovery Techniques
- Nanopore and Nanochannel Transport Studies
- Microbial Fuel Cells and Bioremediation
- Process Optimization and Integration
- Polymer Foaming and Composites
- Fluoride Effects and Removal
- Nanomaterials for catalytic reactions
- Plant Micronutrient Interactions and Effects
- Electrohydrodynamics and Fluid Dynamics
- Water Treatment and Disinfection
Ewha Womans University
2024
University of California, Los Angeles
2019-2024
Arizona State University
2023-2024
California NanoSystems Institute
2022
Per and polyfluoroalkyl substances (PFAS), legacy chemicals used in firefighting the manufacturing of many industrial consumer goods, are widely found groundwater resources, along with other regulated compounds, such as chlorinated solvents. Due to their strong C–F bonds, these molecules extremely recalcitrant, requiring advanced treatment methods for effective remediation, hydrated electrons shown be able defluorinated compounds. A combined photo/electrochemical method has been demonstrated...
The growth of mineral crystals on surfaces is a challenge across multiple industrial processes. Membrane-based desalination processes, in particular, are plagued by crystal (known as scaling), which restricts the flow water through membrane, can cause membrane wetting distillation, and lead to physical destruction material. Scaling occurs when supersaturated conditions develop along surface due passage process known concentration polarization. To reduce scaling, polarization minimized...
Ammonia is considered a contaminant to be removed from wastewater. However, ammonia valuable commodity chemical used as the primary feedstock for fertilizer manufacturing. Here we describe simple and low-cost gas stripping membrane capable of recovering The material composed an electrically conducting porous carbon cloth coupled hydrophobic polypropylene support, that together form conductive (ECM). When cathodic potential applied ECM surface, hydroxide ions are produced at water-ECM...
Recovery of carbon-based resources from waste is a critical need for achieving carbon neutrality and reducing fossil extraction. We demonstrate new approach extracting volatile fatty acids (VFAs) using multifunctional direct heated pH swing membrane contactor. The multilayer laminate composed fiber (CF) bound to hydrophobic sealed with layer polydimethylsiloxane (PDMS); this CF used as resistive heater provide thermal driving force PDMS that, while highly material, known its ability rapidly...
The current review covers removal of contaminants emerging concern by membranes in water and wastewater since our much cited 2018. This offers a wide-ranging examination membrane technologies—in particular, forward osmosis, reverse nanofiltration, ultrafiltration, microfiltration—as potent solutions that can be used to target (CECs) treatment. Emphasizing the urgency preserving quality amid increasing demand CEC-related concerns, paper underscores critical need obtain more holistic...
Mining and extracting metals from hard rock adversely impact the environment. These impacts could be mitigated by capturing dissolved water (i.e., mine runoff, industrial wastewaters, or even tap water) converting to products with potential economic benefits upcycled into high-value products). We sought identify a sorbent that can remove in process of this low-temperature surface adsorption create catalytic material value. discovered γ-aluminum oxide (γ-Al2O3) produce reactive catalyst after...
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Modern groundwater treatment processes often consist of pretreatment, membrane filtration, and disinfection steps. In order to achieve maximum water production quality at the lowest possible cost, trains should be rationally designed based on contaminants present in raw target application. this study, synthetic natural (obtained from Arbuckle-Timbered Hills Aquifer SW Oklahoma) containing elevated concentrations fluoride (F), arsenic (As), iron (Fe), total dissolved solids (TDS) were treated...
Herein, we evaluate the performance of commercially-available, thin film composite brackish water RO (BWRO), seawater (SWRO) and high-pressure (HPRO) membranes operating at pressures from 14 bar (200 psi) to 207 (3,000 psi). For each membrane material, elucidate impacts on using a porous metal frit woven tricot mesh permeate carrier materials used in commercial HPRO, SWRO, BWRO tap (TWRO) modules. The permeability all tested declines with increasing pressure, whereas rejection behaves...
The efficiency of boron removal during water treatment and desalination is insufficient to meet the quality standard set by World Health Organization. Boron can exist in its two natural forms water, depending on pH. At low high pH, tends as boric acid borate ion, which are neutral negatively charged, respectively. In this study, we developed a multi-chamber control system. For group (nanofiltration (NF) reverse osmosis (RO)), pH was controlled enhance efficiency. As expected, at 11 (RO:...