A5076917220- Adsorption and biosorption for pollutant removal
- Catalytic Processes in Materials Science
- Gas Sensing Nanomaterials and Sensors
- Energy and Environment Impacts
- Adsorption, diffusion, and thermodynamic properties of materials
- Smoking Behavior and Cessation
- Advanced Chemical Sensor Technologies
- Toxic Organic Pollutants Impact
- Catalysis and Hydrodesulfurization Studies
- Supercapacitor Materials and Fabrication
- Global Public Health Policies and Epidemiology
- Ionic liquids properties and applications
- Catalysis and Oxidation Reactions
- Air Quality and Health Impacts
- Recycling and Waste Management Techniques
- Thermochemical Biomass Conversion Processes
- Essential Oils and Antimicrobial Activity
- Pharmacological Effects of Medicinal Plants
- Heavy metals in environment
- Mesoporous Materials and Catalysis
- COVID-19 Clinical Research Studies
- Surface Modification and Superhydrophobicity
- Membrane-based Ion Separation Techniques
- Analytical Chemistry and Sensors
- Coffee research and impacts
Donaldson (United States)
2009-2024
American University of Sharjah
2013-2022
GTx (United States)
2015
City College of New York
2001-2006
Royal Military Academy
2006
The Graduate Center, CUNY
2002-2006
City University of New York
2002-2003
Optimizing materials and associated structures for detecting various environmental gas pollutant concentrations has been a major challenge in sensing technology. Semiconducting metal oxides (SMOs) fabricated at the nanoscale are class of sensor technology which metallic species functionalized with dopants to modify their chemiresistivity crystalline scaffolding properties. Studies focused on recent advances sensors utilizing oxide nanostructures special emphasis structure-surface property...
Although there is no reported genetic predisposition in contracting coronavirus disease 2019 (COVID-19), the mortality rate varies among different ethnic groups. Here we determined potential correlation between COVID-19 and spice consumption. The data from 163 countries including total cases, deaths, recovered were analyzed. It was observed that a clear interrelated prevalence number of cases per million population tested gram supply capita day. Nations with lower consumptions spices showed...
A nanocomposite (NC) of titanium (IV) oxide (TiO2) and molybdenum (VI) (MoO3) was synthesized using a hydrothermal route. Detailed analyses transmission electron microscopy, X-ray diffraction, fluorescence (XRF), Brunauer–Emmett–Teller (BET) isotherms, photoelectron spectroscopy, Raman, diffuse reflectance infrared Fourier transform spectroscopy were carried out confirmed the successful formation pure TiO2-MoO3 (Ti-Mo) NC. The Ti-Mo NC possesses sizes in range 150–500 nm. XPS, DRIFT shift...
Two samples of activated carbons were used in this study: one coal origin and wood origin. The initial modified by impregnation with urea followed heat treatment at 450 950 °C. pore structure surface chemistry the characterized using sorption nitrogen, Boehm potentiometric titration, thermal analysis. results showed differences structural characteristics chemical inventory. Gas chromatography infinite dilution was to study adsorption acetaldehyde. isosteric heats calculated from values...
Coal origin and wood activated carbons were used in this study. To broaden the spectrum of surface features, initial samples was modified using oxidation with nitric acid or impregnation urea followed by heat treatment. Boehm potentiometric titrations, thermal analysis, sorption nitrogen to characterize pore structure chemistry. Then adsorption ethylmethylamine from aqueous solutions carried out without controlling pH carbon suspension. The isotherms measured at 299 K fitted Freundlich...
Burning Arabian incense (Bakhour) is a common indoor practice in the Middle East and Gulf region. However, chemical composition of this substance has never been studied. Three different Bakhour brands were selected for study. A complete profile raw samples was determined using carbon, hydrogen, nitrogen elemental analysis, inductively coupled plasma optical emission spectroscopy, scanning electron microscopy with energy dispersive X-ray spectroscopy gas chromatography mass spectrometry...
Recent trends in legislation across the world are aimed toward reduction of levels sulfur fuel oils to less than 10 ppm (ultra low diesel, ULSD) due its toxic and environmental effects. Hydrodesulfurization (HDS) is current method used for desulfurization faces technical challenges, extreme conditions energy consumption necessary reach levels. Recently, ionic liquid (IL) technology has been proposed as a possible solution achieving ULSD. ILs represent new class “green” solvents that gaining...
The removal efficiency of oil from simulated samples produced water (SPW) was studied using a low-cost adsorbent eggplant peel powder (EPP). effects pH, dosage, contact time, and temperature on the were investigated. optimum conditions for maximum (PW) are found to be: pH 10.00, dosage = 1.75 g/L, time 40 min, 55°C. results showed that increases with increasing salinity, pH. EEP, at condition, is greater than 90% by weight. study EPP fast excellent this removal. crude adsorption follow...
Midwakh, which originated in the Middle East, has started to spread globally with different brands commercialized online and local stores across Europe USA. Dokha is tobacco used midwakh. To this day, risk of midwakh smoking poorly understood. Three types dokha were evaluated study, classified as cold, medium, hot using gas chromatography-mass spectrometry (GC-MS). The concentrations nicotine polycyclic aromatic hydrocarbons (PAHs) raw smoked samples measured, results compared data...
The adsorption of high concentrations ethylmethylamine (EMA) vapor from a humid air stream by an activated carbon bed has been studied. behavior is quite different the trace quantities aqueous solution. introduction surface groups no apparent direct effect on EMA adsorption. However, because these enhance water and adsorbed hinders organic adsorption, modified carbons exhibit lower capacity slower kinetics for than untreated ones. phase mechanism it liquid phase. humidity was evaluated shown...
Two types of activated carbons different origins were used to study the adsorption valeric acid from aqueous solution. Nitrogen-containing basic groups introduced into surface by impregnating initial samples with urea followed heat treatment at 1223 K. Characterization was done using following techniques: Boehm titration, potentiometric thermal analysis and sorption nitrogen. Valeric isotherms measured 333 K fitted Freundlich equation. A direct correlation capacity coefficients both total...