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Chemical Engineering: Recent submissions
Now showing items 81-100 of 994
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Deep deterministic policy gradient: applications in process control and integrated process design and control
(University of Waterloo, 2022-06-20)In recent years, the urgent need to develop sustainable processes to fight the negative effects of climate change has gained global attention and has led to the transition into renewable energies. As renewable sources ... -
Reduction of Hospital Environmental Contamination Using Automatic UV Room Disinfection
(Global Biorisk Advisory Council, 2021-08-21)The use of mobile ultraviolet (UV) germicidal irradiation has been documented to reduce contamination levels and HAIs in hospitals. However, there is a general lack of information on the efficacy of wall-mounted, automated ... -
Toxicity associated with the photo catalytic and photo stable forms of titanium dioxide nanoparticles used in sunscreen
(MedCrave, 2015-12-06)The increasing number of applications using titanium dioxide nanoparticles (nano-TiO2) highlights the need to continuously and systematically investigate its toxicity. Particle size, surface area and dose are the classical ... -
Comparing Non-Steady State Emissions under Start-Up and Shut-Down Operating Conditions with Steady State Emissions for Several Industrial Sectors: A Literature Review
(Multidisciplinary Digital Publishing Institute, 2017-02-04)This study investigates the emissions of various industrial facilities under start-up, shut-down, and normal operations. The industries that have been investigated include power and/or heat generation, energy-from-waste ... -
Degradation and Toxicity Assay During Electrocatalysis of Chlorobenzene in Aqueous Solution
(ESG, 2015-12-01)The degradation and toxicity assay on a three-dimensional electrocatalytic oxidation (ECO) of organic pollutants were described in this paper. Aqueous chlorobenzene (CB, 50 mg/L) was chosen as model pollutant and C. vulgaris ... -
Synthesis of Vertically-Aligned Zinc Oxide Nanowires and Their Application as a Photocatalyst
(Multidisciplinary Digital Publishing Institute, 2017-01-11)Vertically aligned zinc oxide (ZnO) nanowires were hydrothermally synthesized on a glass substrate with the assistance of a pre-coated ZnO seeding layer. The crystalline structure, morphology and transmission spectrum of ... -
Biotrickling Filtration of Air Contaminated with 1-Butanol
(Multidisciplinary Digital Publishing Institute, 2017-08-15)The removal of high concentrations of 1-butanol in an air stream was evaluated with a biotrickling filter for potential application to an industrial off-gas. Experiments were conducted on a laboratory-scale system, packed ... -
Air Quality Impacts of Petroleum Refining and Petrochemical Industries
(Multidisciplinary Digital Publishing Institute, 2017-09-19)Though refineries and petrochemical industries meet society’s energy demands and produce a range of useful chemicals, they can also affect air quality. The World Health Organization (WHO) has identified polluted air as the ... -
Poly-L-arginine Coated Silver Nanoprisms and Their Anti-Bacterial Properties
(Multidisciplinary Digital Publishing Institute, 2017-09-27)The aim of this study was to test the effect of two different morphologies of silver nanoparticles, spheres, and prisms, on their antibacterial properties when coated with poly-L-arginine (poly-Arg) to enhance the interactions ... -
Formation of Secondary Organic Aerosols by Germicidal Ultraviolet Light
(Multidisciplinary Digital Publishing Institute, 2019-01-31)Ultraviolet (UV) light with a wavelength of 254 nm is known to be germicidal, and thus has been increasingly employed as a method of disinfection for indoor environments. Solar UV wavelengths (300 to 400 nm) are known to ... -
Colorimetric Detection of Mercury Ions in Water with Capped Silver Nanoprisms
(Multidisciplinary Digital Publishing Institute, 2019-05-10)The emission of mercury (II) from coal combustion and other industrial processes may have impacts on water resources, and the detection with sensitive but rapid testing methods is desirable for environmental screening. ... -
Ultraviolet-C Irradiation, Heat, and Storage as Potential Methods of Inactivating SARS-CoV-2 and Bacterial Pathogens on Filtering Facepiece Respirators
(Multidisciplinary Digital Publishing Institute, 2022-01-10)The arrival of SARS-CoV-2 to Aotearoa/New Zealand in February 2020 triggered a massive response at multiple levels. Procurement and sustainability of medical supplies to hospitals and clinics during the then upcoming ... -
Rapid Review of SARS-CoV-1 and SARS-CoV-2 Viability, Susceptibility to Treatment, and the Disinfection and Reuse of PPE, Particularly Filtering Facepiece Respirators
(Multidisciplinary Digital Publishing Institute, 2022-08-22)In the COVID-19 pandemic caused by SARS-CoV-2, hospitals are often stretched beyond capacity. There are widespread reports of dwindling supplies of personal protective equipment (PPE), particularly N95-type filtering ... -
Experimental and kinetic study of vacuum residue cracking over zirconium based catalysts
(Springer, 2022-04-01)In this study, thermal cracking and catalytic cracking over zirconium-based catalysts of the vacuum residue were achieved in the presence of supercritical steam at 400-450 degrees C, 20 bar, and 2-4 h. Two different catalysts ... -
A study of cellulose nanocrystal reinforcing effect in polyurethane and vitrimer system
(University of Waterloo, 2022-05-24)Nanocellulose-based composites and materials have received remarkable attention due to their high mechanical performance, low weight, and environmental friendliness. However, the compatibility between CNCs and polymer may ... -
Chemical Modification of Poly-α-1,3-Glucan
(University of Waterloo, 2022-05-09)Sustainability is becoming a primary consideration in the development of new materials. Specifically, renewability and biodegradability are desirable properties for materials in a variety of applications, including packaging ... -
Design and Experimental Study of a Sabatier Reactor for Conversion of CO2 and Biogas into Renewable Natural Gas
(University of Waterloo, 2022-05-04)Biogas is a product of anaerobic fermentation which is rich in CO2. Upgrade of biogas is commercially achieved by separating CO2 and impurities to improve its quality. As an alternative, the CO2 contained in biogas can be ... -
Porous MXene Synthesis and Applications for Batteries
(University of Waterloo, 2022-05-02)Efficient electrochemical energy storage devices are of particular importance for accelerating the widespread adaption of renewable energy, and electrode materials are critical to achieve optimal system performance. MXene ... -
Functional Polysaccharide Nanomaterials (PS-NMs) for the reduction of elevated serum cholesterol & progressive diet-induced obesity (DIO): A 'novel' application of PS-NMs.
(University of Waterloo, 2022-04-28)High plasma cholesterol (hypercholesterolemia) is a potential consequence of obesity that is becoming a major public health challenge. Excess caloric intake without a corresponding increase in energy expenditure is believed ... -
Optimal Processing Pathway for Sludge-to-Energy Technologies: A Superstructure Optimization-Based MINLP Model
(University of Waterloo, 2022-04-27)The perception of sewage sludge has been increasingly changing from being a waste, that is a burden to the environment and society, to a useful resource of materials and renewable energy. There are several available ...