A5018686663- Wastewater Treatment and Nitrogen Removal
- Water Treatment and Disinfection
- Microbial Fuel Cells and Bioremediation
- Membrane Separation Technologies
- Chemical Analysis and Environmental Impact
- Bacterial biofilms and quorum sensing
- Microbial Community Ecology and Physiology
- Ammonia Synthesis and Nitrogen Reduction
- Constructed Wetlands for Wastewater Treatment
- Lattice Boltzmann Simulation Studies
- Environmental remediation with nanomaterials
- Polymer Surface Interaction Studies
- Membrane-based Ion Separation Techniques
- Antimicrobial agents and applications
- Odor and Emission Control Technologies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Inhalation and Respiratory Drug Delivery
- Environmental DNA in Biodiversity Studies
- Listeria monocytogenes in Food Safety
- Hydrology and Sediment Transport Processes
- Water Systems and Optimization
- Cellular Mechanics and Interactions
- Supercapacitor Materials and Fabrication
- Fecal contamination and water quality
- Electrochemical sensors and biosensors
University of Notre Dame
2016-2025
Institute for Scientific and Technological Research
2022
Florida State University
2010
Ghent University
2010
Arizona State University
2006-2007
Northwestern University
2000-2007
Perchlorate is an emerging surface water and groundwater contaminant, it of concern because its mobility in the environment inhibitory effect on thyroid function. Microbial fuel cells (MFCs) may be a suitable method for treatment. We investigated MFC with denitrifying biocathode perchlorate reduction utilized system to identify putative biocathode-utilizing perchlorate-reducing bacteria (PCRB). was established by increasing loading biocathode, while decreasing nitrate loading. obtained...
Gaseous compounds, such as CH4, H2, and O2, are commonly produced or consumed during wastewater treatment. Traditionally, these gases need to be removed delivered using gas sparging liquid heating, which can energy intensive with low efficiency. Hydrophobic membranes being increasingly investigated in treatment resource recovery. This is because semipermeable barriers repel water create a three-phase interface that enhances mass transfer chemical conversions. Critical Review provides first...
The perchlorate anion (ClO 4 – ) has been found in potentially harmful concentrations numerous water sources. Because is not removed by conventional treatment processes, new processes are needed. Biological reduction a promising alternative. authors investigated hydrogen‐oxidizing hollow‐fiber membrane–biofilm reactor system for removal. Hydrogen an ideal electron donor biological drinking because it presents no toxicity, inexpensive, and unlikely to persist as source of instability...
Many oxidized pollutants, such as nitrate, perchlorate, bromate, and chlorinated solvents, can be microbially reduced to less toxic or soluble forms. For drinking water treatment, an electron donor must added. Hydrogen is ideal donor, it non-toxic, inexpensive, sparsely soluble. We tested a hydrogen-based, hollow-fiber membrane biofilm reactor (MBfR) for reduction of chlorate, chlorite, chromate, selenate, selenite, dichloromethane. The influent included 5 mg/L nitrate 8 oxygen primary...
A H2-based, denitrifying and sulfate-reducing membrane-biofilm reactor (MBfR) was shown to be effective for removing selenate (Se(VI)) from water or wastewater by reducing it insoluble Se0. When Se(VI) first added the MBfR, reductionfirst selenite (Se(IV)) then mostly Se0took place immediately increased over three weeks, suggesting enrichment dissimilatory selenium-reducing bacteria. Increasing H2 pressure improved reduction rate total-Se removal, lowering influent concentration 1000 260 μg...
Abstract Shortcut nitrogen removal, that is, removal via formation and reduction of nitrite rather than nitrate, has been observed in membrane‐aerated biofilms (MABs), but the extent, controlling factors, kinetics MABs are poorly understood. We used a special MAB reactor to systematically study effects dissolved oxygen (DO) concentration at membrane surface, which is biofilm base, on nitrification rates, extent shortcut nitrification, microbial community structure. The focus was anoxic bulk...
Wastewater treatment plants can be significant sources of nitrous oxide (N2O), a potent greenhouse gas. However, little is known about N2O emissions from biofilm processes. We adapted an existing suspended-growth mathematical model to explore nitrifying biofilms. The included formation by ammonia-oxidizing bacteria (AOB) via the hydroxylamine and nitrifier denitrification pathways. Our suggested that biofilms could significantly greater than suspended growth systems under similar conditions....
Premise plumbing systems without disinfectant residuals can develop thick biofilms, increasing health risks from biofilm-associated opportunistic pathogens. Yet existing models do not treat drinking water biofilms as true with thicknesses and substrate gradients within the biofilm, or consider effects of substrates leaching pipes into biofilm. We developed a one-dimensional model nonchlorinated premise pipe to study factors affecting biofilm growth rates. Short stagnation times biodegradable...