Search Results - paul+westerhoff

25 Results Sort By:
Optical Fiber Reactor for Gas Treatment of Nitrogen-Oxide
Background Nitrogen oxides (NOx) as well as nitrous oxide (N2O) have been identified as pollutants of concern in the semiconductor manufacturing industry. While there has been successful implementation of abatement systems to control the emissions of nitrogen oxides, some facilities require further removal to comply with new regulations and meet sustainability...
Published: 12/16/2024   |   Inventor(s): Pierre Herckes, Paul Westerhoff, Matthew Fraser
Keywords(s):  
Category(s): Physical Science, Semiconductors, Materials & Processes, Energy & Power, Environmental
Photoelectrocatalytic-Enabled Flexible Polymeric Optoelectrodes
Background Photoelectrocatalytic processes (PECs) combine photocatalysis and electrochemical principles to enhance charge carrier generation and stability within nanomaterials (NMs). Nano-enabled PECs can be used for water purification or hydrogen production applications. Current PEC designs face challenges due to low energy efficiencies, because most...
Published: 12/13/2024   |   Inventor(s): Paul Westerhoff, Sergi Garcia-Segura, Tzu-Heng Wang
Keywords(s):  
Category(s): Physical Science, Advanced Materials/Nanotechnology, Energy & Power, Environmental Remediation/Wastewater Treatment
High-Efficiency Photocatalytic Formate Production from Carbon Dioxide
Background Greenhouse gases (GHGs) trap heat and lead to global warming and other severe effects of climate change. Carbon dioxide (CO2) is the main source of GHG, and its capture before entering the atmosphere is an important mitigation approach. Captured CO2 from point-emission sources or via direct air capture (DAC) can be geologically sequestered...
Published: 11/15/2024   |   Inventor(s): Yen-Jung Lai, Tzu-Heng Wang, Paul Westerhoff, Bruce Rittmann
Keywords(s):  
Category(s): Physical Science, Energy & Power, Environmental
Nanodelivery systems for long-term controlled release of pharmaceuticals
This invention describes a nanodelivery system for controlled drug release using biocompatible materials. It features implantable or injectable devices with precise aperture control for zero-order kinetics, ensuring consistent therapeutic delivery over extended periods of time. Background Implantable drug delivery systems offer significant advantages...
Published: 10/11/2024   |   Inventor(s): Paul Ho, Junjun Liu, Tengfei Jiang, Salomon Stavchansky
Keywords(s):  
Category(s): Life sciences > Therapeutics > Drug delivery, Life sciences > Medical technology > Medical devices
Nano-Sized Boron-Doped Diamond-Enabled Electrodes for Water Treatment and Chemical Sensing
Background Electrochemical sensing is a compact process used to detect chemicals in aqueous solutions (e.g., water, bodily fluids, foods). It can also be used to treat pollutants in drinking and industrial wastewaters. Electrochemical oxidation can generate hydroxyl radicals, which are effective in degrading organic contaminants in water, including...
Published: 11/6/2024   |   Inventor(s): Paul Westerhoff, Sergi Garcia-Segura, Shahnawaz Sinha, Rishabh Bansal, Rafael Verduzco, Michael Wong
Keywords(s): Environmental
Category(s): Physical Science, Energy & Power, Advanced Materials/Nanotechnology, Semiconductors, Materials & Processes
Atmospheric Water Generation by a Hybridized Rotary Dessicant with Solar-Heated Evacuated Tubes
Background Water harvesting from ambient air to produce fresh water is an active area of research. Water moisture in the air is universally available, and the water extracted is essentially pure water. This makes this process ideal, particularly for communities with limited freshwater supplies. Atmospheric Water Generation (AWG) technology can produce...
Published: 5/10/2024   |   Inventor(s): Paul Westerhoff, Shahnawaz Sinha, Chao Zeng
Keywords(s):  
Category(s): Energy & Power, Physical Science, Advanced Materials/Nanotechnology, Applied Technologies, Environmental Remediation/Wastewater Treatment
High-Efficiency Photocatalytic H2O2 Production
Background Hydrogen peroxide (H2O2) is widely used for industrial synthesis of organic chemicals, advanced oxidation of drinking or wastewater, and surface disinfection of pathogens. Currently, ~95% of H2O2 production employs the energy- and chemical-intensive anthraquinone-oxidation process. Photocatalytic H2O2 production is an emerging alternative...
Published: 11/29/2023   |   Inventor(s): Yen-Jung Lai, Tzu-Heng WANG, Paul Westerhoff, Bruce Rittmann
Keywords(s):  
Category(s): Physical Science, Energy & Power, Environmental Remediation/Wastewater Treatment, Alternative Energy
Engineering Amorphous Titanium (Hydr)Oxides Incorporated into Point of Use Activated Carbon Block Filter for Simultaneous Removal of Metallic and Oxo-Anions Removal from Drinking Water
Background Arsenic is classified as a Class-A human carcinogen, and occurs widely in ground and surface waters across the globe. Long-term exposure to arsenic-contaminated water has been linked to skin, kidney, liver, and bladder cancers. In addition to arsenic, other metals (e.g., chromium, vanadium, tungsten, selenium, manganese, lead) commonly co-occur...
Published: 5/31/2024   |   Inventor(s): Paul Westerhoff, Alireza Farsad, Kiril Hristovski, Shahnawaz Sinha
Keywords(s): Environmental
Category(s): Advanced Materials/Nanotechnology, Environmental Remediation/Wastewater Treatment, Physical Science, Environmental
Side-Emitting Optical Fibers as the Next-Generation Reverse Osmosis Membrane Spacer to Mitigate Biofouling
Background In desalination and wastewater reuse applications, biofouling of membrane surfaces can contribute to increased operational challenges and higher costs. Ultraviolet (UV) light has been shown to control biofilms while reducing chemical usage and disinfection by-products, but in spiral or complex geometries, delivering sufficient light to the...
Published: 6/5/2023   |   Inventor(s): Paul Westerhoff, Hojung Rho
Keywords(s):  
Category(s): Environmental Remediation/Wastewater Treatment, Energy & Power, Physical Science, Advanced Materials/Nanotechnology, Bioanalytical Assays, Chemistries & Devices
Portable Photoelectrocatalytic Device for Water Disinfection
­Bacteria, viruses, and other harmful microorganisms pose a significant pathogenic health-related risk to safe drinking water. Disinfection by chlorination is commonly practiced, however, chlorine is a toxic chemical that typically requires careful storage and proper handling. While ultraviolet (UV) disinfection can be effective, UV-based processes...
Published: 4/27/2023   |   Inventor(s): Paul Westerhoff, Francois Perreault, Sergio Garcia-Segura, Shahnawaz Sinha, Ana Barrios, Renato Montenegro Ayo
Keywords(s): Environmental, Water, Water Purification
Category(s): Physical Science, Environmental Remediation/Wastewater Treatment, Manufacturing/Construction/Mechanical, Environmental, Semiconductors, Materials & Processes
1 2 3