A5059078076- Coal and Its By-products
- Biodiesel Production and Applications
- Thermochemical Biomass Conversion Processes
- Coal Properties and Utilization
- Catalysis for Biomass Conversion
- Advanced Combustion Engine Technologies
- Biofuel production and bioconversion
- Heat transfer and supercritical fluids
- Catalysis and Hydrodesulfurization Studies
- Microbial Metabolic Engineering and Bioproduction
- Heavy metals in environment
- Mercury impact and mitigation studies
- Toxic Organic Pollutants Impact
- Process Optimization and Integration
- Combustion and Detonation Processes
- Algal biology and biofuel production
- Zeolite Catalysis and Synthesis
- Air Quality and Health Impacts
- Coal and Coke Industries Research
- Combustion and flame dynamics
- Flexible and Reconfigurable Manufacturing Systems
- Petroleum Processing and Analysis
- Industrial Gas Emission Control
- Recycling and utilization of industrial and municipal waste in materials production
- Advanced Control Systems Optimization
University of North Dakota
2015-2024
Cornell University
2015
Grand Forks Air Force Base
2011
University of Arizona
2000-2006
Aromatization of propylene was performed in a continuous reactor over HZSM-5 catalysts. A full-factorial design experiments (DOE) methodology identified the effects temperature (400°–500°C), Si:Al ratio (50–80), feed concentration (8.9–12.5 mol.%), and catalyst amount (0.2–1.0 g) on conversion as well yields benzene, toluene, p-xylene, o-xylene (BTX), total BTX. The influenced all responses, while affected responses except yield p-xylene. An increase significantly increased interaction...
Thermal cracking of triacylglyceride (TG) oils results in complex mixtures, containing nearly 20% cyclic hydrocarbons, which can be further processed into middle-distillate transportation fuels and byproduct chemicals. The occurrence patterns products obtained via the thermal several TG feedstocks, such as canola soybean oils, well triolein tristearin (conducted at 430–440 °C absence catalysts under vacuum), were investigated to probe possible formation mechanisms. Detailed gas...
Coal fueled the Industrial Revolution and global expansion of electrification in 20th century. In 21st century, coal use has declined North America Europe but continues to increase Asia. contains many elements Periodic Table, percent levels or trace amounts (parts per million parts billion). The impact these on environment via air emissions water discharges from coal-fired plants been studied, with decades research their chemical transformations within combustion systems fates upon...
The feasibility of oxidizing elemental mercury in coal combustion flue gas using catalytic material impregnated onto fabric filters was explored. TiO2, Au/TiO2, and Pd/Al2O3 were studied based on promising results previous research. Several coating methods investigated to determine the best way load a filter. A spray coat method found have highest initial loading had lowest losses after simulated pulse-jet cleaning. oxidation performance catalyst-coated tested bench-scale reactor under...
A key focus of microalgae-based fuels/chemicals research and development has been on the lipids that many strains generate, but recent studies show solely recovering these may not be cost competitive with fossil-derived processes. However, if carbohydrates can also recovered ultimately converted into useful chemical intermediates, this improve economics for sustainable product technologies. In present work, physical pre-treatments were performed Chlorella vulgaris microalgae strain to...
Municipal sewage sludge (MSS) is formed during wastewater treatment, and its processing disposal represent one of the most environmentally challenging aspects treating process. One option currently being considered a process involving heat treatment (to render biologically inactive) followed by dewatering, drying, pulverizing, combustion. This research focuses on fine particle emissions from combustion dried, treated, MSS, cofired with either natural gas or pulverized Ohio bituminous coal as...
The impacts of biodiesel on gaseous and particulate matter (PM) emissions a JP-8-fueled T63 engine were investigated. Jet fuel was blended with the soybean oil-derived methyl ester biofuel at various concentrations combusted in turbine engine. operated three power settings, namely ground idle, cruise, takeoff power, to study impact significantly different pressure temperature conditions. Particulate characterized by measuring particle number density (PND; concentration), size distribution,...
A two-step process was developed for the production of aromatic hydrocarbons from triglyceride (TG) oils. In first reaction step, TG (soybean) oil noncatalytically cracked and purified by distillation to produce an organic liquid product (OLP). The resulting OLP then converted into compounds in a second using zeolite catalyst, HZSM-5. this reaction, three main factors were found influence yield hydrocarbons: SiO2:Al2O3 ratio HZSM-5, temperature OLP-to-catalyst ratio. Upon cursory...
Microalgae represent a promising source of triglycerides and free fatty acids, synthesized in the form lipids, for use renewable fuels chemicals. One challenge is ability to efficiently recover lipids from within microalgae cell. Although various techniques have been studied individually, comprehensive study extraction using consistent experimental analytical methodology missing. This aims provide this unifying comparison common strain Chlorella vulgaris. The factors that were surveyed then...
Abstract Noncatalytic pyrolysis of triacylglyceride (TG) oils is an attractive option for production renewable fuels and chemicals. This process produces 20–30 wt% C 2 –C 10 fatty acids due to the presence carboxyl moieties in TG. To decipher this process’ mechanism, several compositionally distinct crop oil feedstocks with varied abundances 18 saturated unsaturated TG carboxylic acid chains were pyrolyzed short residence times a laboratory‐scale continuous turbulent flow reactor. A...