A5032530769- Membrane Separation Technologies
- Solar-Powered Water Purification Methods
- Membrane-based Ion Separation Techniques
- Surface Modification and Superhydrophobicity
- Calcium Carbonate Crystallization and Inhibition
- Advanced Sensor and Energy Harvesting Materials
- Marine Biology and Environmental Chemistry
- Minerals Flotation and Separation Techniques
- Electrohydrodynamics and Fluid Dynamics
- Electrokinetic Soil Remediation Techniques
- Membrane Separation and Gas Transport
- Solar Thermal and Photovoltaic Systems
- Lubricants and Their Additives
- Fuel Cells and Related Materials
- Advanced Cellulose Research Studies
- Geophysical and Geoelectrical Methods
- Lignin and Wood Chemistry
- Electrospun Nanofibers in Biomedical Applications
- Groundwater flow and contamination studies
- Nanocomposite Films for Food Packaging
Vanderbilt University
2019-2023
Rose–Hulman Institute of Technology
2017
Membrane distillation (MD) has been garnering increasing attention in research and development, since it proposed as a promising technology for desalinating hypersaline brine from various industries using low-grade thermal energy. However, depending on the application context, MD faces several important technical challenges that would lead to compromised performance or even process failure. These include pore wetting, mineral scaling, membrane fouling. This review is devoted providing...
We report in this study a scalable and controllable approach for fabricating robust high-performance superhydrophobic membranes membrane distillation (MD). This novel combines electro-co-spinning/spraying (ES2) with chemical vapor welding enables the formation of (r-SH) that are mechanically strong, highly porous, robustly superhydrophobic. Compared obtained using surface deposition fluorinated nanoparticles, r-SH have more wetting properties higher permeability MD. MD scaling experiments...
Membrane distillation (MD) is a thermal desalination process with the capability of harnessing low-grade waste heat to treat hypersaline brine. For this reason, MD has been actively explored as promising technology for brine management and zero-liquid discharge (ZLD). The major inevitable challenge conventional hydrophobic membranes, however, membrane scaling, i.e., formation deposition mineral crystals on surface that eventually leads failure. By performing comparative experiments in study,...
Membrane distillation (MD) is a thermal desalination process that advantageous due to its ability harness low-grade waste heat separate highly saline feedstock. However, like any process, the energy efficiency depends on recover latent from condensation in distillate. In direct contact MD (DCMD), this can be achieved by integrating exchanger (HX) stored distillate stream preheat incoming feed stream. Based principle of equal capacity flows, we derive simple and intuitive expression for...
Membrane distillation (MD) has potential to become a competitive technology for managing hypersaline brine but not until the critical challenge of mineral scaling is addressed. The state-of-the-art approach mitigating in MD involves use superhydrophobic membranes that are difficult fabricate and commercially unavailable. This study explores novel operational strategy, namely, negative pressure direct contact membrane (NP-DCMD) can minimize with available hydrophobic at same time enhance...
Almost every single experimental study regarding membranes involves the measurement of contact angle (CA) to quantify membrane wetting property. However, interpretation CA can sometimes be tricky. In this study, we investigate an interesting phenomenon about a surfactant solution on microporous hydrophobic membrane. Specifically, with very low surface tension have unexpectedly high contrast, water/ethanol mixture same completely wicks (i.e., zero CA). The drastic difference in between two...
Fouling on submerged surfaces is a major limiting factor for membranes, heat exchangers, and marine vessels as it induces mass transfer resistances that increase operating costs lead to system failures. While the role of surface roughness fouling has been extensively studied, specific effect debated in literature. In this study, we employed force spectroscopy based atomic microscopy with two model colloidal probes elucidate foulant-surface interactions. Specifically, quantified strength...
Mineral scaling is a phenomenon that occurs on submerged surfaces in contact with saline solutions. In membrane desalination, heat exchangers, and marine structures, mineral reduces process efficiency eventually leads to failure. Therefore, achieving long-term resistance beneficial enhancing performance reducing operating maintenance costs. While evidence shows superhydrophobic may reduce kinetics, prolonged limited due the finite stability of entrained gas layer present Cassie-Baxter...