A5085159237- Methane Hydrates and Related Phenomena
- Spacecraft and Cryogenic Technologies
- CO2 Sequestration and Geologic Interactions
- Atmospheric and Environmental Gas Dynamics
- Phase Equilibria and Thermodynamics
- Hydrocarbon exploration and reservoir analysis
- Carbon Dioxide Capture Technologies
- Thermodynamic properties of mixtures
- Inorganic Fluorides and Related Compounds
- Chemical Thermodynamics and Molecular Structure
- Catalytic Cross-Coupling Reactions
- Advanced Cellulose Research Studies
- Ionic liquids properties and applications
- Process Optimization and Integration
- Quantum, superfluid, helium dynamics
- Catalysis for Biomass Conversion
- Lignin and Wood Chemistry
- Catalytic C–H Functionalization Methods
- Chemical Looping and Thermochemical Processes
- Membrane Separation and Gas Transport
- Maritime Ports and Logistics
- Graphene and Nanomaterials Applications
- Advanced Battery Materials and Technologies
- Maritime Transport Emissions and Efficiency
- Refrigeration and Air Conditioning Technologies
University of the Witwatersrand
2022-2025
University of KwaZulu-Natal
2013-2021
Shiraz University of Technology
2012-2016
Islamic Azad University, Buin-Zahra
2014
University of Tehran
2013
Shiraz University
2011
Abstract Mining activities in sub-tropical regions are one of the major contributors to environmental contamination and therefore require monitoring mitigation methodologies. The study investigated composition real-world wastewater from mine explosions explored potential graphene oxide as an adsorbent. Heavy metals, namely, Fe (12.10 ppm), Cu (40.70 Cr (148 ppm) Pb (0.03 were present. optimal pH, adsorbent dose, temperature, contact time for heavy metal removal 12.08, 0.5 g, 25 °C h,...
In this paper, we present two different approaches to represent/predict the gas hydrate phase equilibria for carbon dioxide, methane, or ethane + pure water system in presence of various types porous media with pore sizes. The studied include silica gel, mesoporous silica, and glass. First, a correlation is presented, which estimates suppression temperature due effects from ice point depression (IPD). second place, several mathematical models are proposed using least squares support vector...
Ethene, ethyne, and propene are common important industrial gases which known to form hydrates. There exists in the open literature some hydrate dissociation data for simple hydrates of three hydrocarbons. Unfortunately reported instances very limited, sets not always agreement with each other. To evaluate these hydrocarbons, new were measured compared that literature. Measurements ethyne undertaken temperature pressure ranges (273.2 285.5) K (0.614 2.467) MPa, respectively. The measurements...
Hydrate dissociation conditions for the refrigerants R116 (C2F6), R23 (CHF3), and their mixture R23/R116 (46:54 mass percent ratio) in regions of hydrate–aqueous–vapor hydrate–aqueous–liquid refrigerant equilibria were measured. The experimental measurements performed within pressure range (0.45 to 9.2) MPa temperature (272.2 293.2) K. A thermodynamic model was developed prediction measured conditions. For this purpose, PRSV equation state coupled with MHV2 GE-EoS mixing rule along UNIFAC...
Separating and purifying noble gases from atmospheric air require highly efficient separation processes to achieve commercially viable quantities. Cryogenic distillation is a widely employed method for gas separation, which an energy-intensive technology. This study proposes cost-effective separating xenon the mixture of argon, krypton, based on multistage hydrate Experimental measurements were conducted using 52 cm3 stainless steel equilibrium cell obtain new dissociation data mixtures...
Gas hydrate (clathrate hydrate) dissociation data at low to moderate pressures are necessary for practical applications, e.g., gas separation. However, it is often known or recognized that the separation conditions encountered exist high and temperatures. One solution this problem application of quaternary ammonium salts (QAS) semiclathrate hydrates such as tetra-n-butyl bromide (TBAB) which can conditions. The addition TBAB enables a shift in pressure-temperature diagrams lower higher In...
Quaternary ammonium salts (QAS) such as tetra-n-butyl bromide (TBAB) can shift the hydrate pressure–temperature dissociation conditions to lower pressures and higher temperatures. In this communication, for xenon + TBAB water system were measured within temperature pressure ranges of (282.9 310.6) K (0.12 10.09) MPa, respectively. The measurements performed at varying concentrations TBAB, viz. 0, 0.1, 0.2, 0.3 mass fractions. results indicate that aqueous solutions with fractions show a...
Abstract Zinc (II) chloride based deep eutectic solvent (DES) were formed by mixing zinc with phosphoric acid. Fourier‐transform infrared spectroscopy was used to identify any possible shifts when the two compounds assorted, and differential scanning calorimetry (SDT Q600 V20.9 Build 2D) utilized evaluate formation of solvent. Densities, , speed sound, u [ZnCl 2 ][phosphoric acid] 1:2.5 methanol, ethanol, or propanol have been measured at T = (293.15, 303.15, 308.15, 313.15) K atmospheric...
In the present study, experimental incipient dissociation data obtained by isochoric pressure search method for mixed ethyne and propene (0.189, 0.544 0.846 mol fraction of ethyne) hydrates are reported in temperature ranges (275.9 to 283.4) K (0.651 1.827) MPa, respectively. Additionally, three-phase equilibrium conditions inside hydrate stability region were measured (273.4 282.6) (0.441 1.709) with compositional analysis. Experimental mole fractions at on a water-free basis ranged from...