Browsing Chemical Engineering by Title
Now showing items 625-644 of 1172
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Ionic Liquids as Multi-purpose Inhibitors to avoid Natural Gas Hydrates during Gas Processing
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)The issue of hydrate formation during gas processing is a challenging problem for the oil and gas industries. Billions of dollars spent annually to get rid of the blockage of pipelines due to hydrate clogging by applying ... -
Ionic Liquids in Bulk and at an Interface
( John Wiley & Sons, Inc , 2015 , Book chapter)In the present chapter, we describe different types of investigation carried out by research groups based at CQE/IST/UTL and ITQB/UNL and their ramifications in terms of surface science. Most of the work is focused on the ... -
Iron Sulfide Scale Inhibition in Carbonate Reservoirs
( American Chemical Society , 2022 , Article)Hydrocarbon production operations include water injection, varying stimulation approaches, and enhanced oil recovery techniques. These treatments often affect reservoir formation, production, and injection facilities. Such ... -
Isolation, identification and biodiversity of antiscalant degrading seawater bacteria using MALDI-TOF-MS and multivariate analysis
( Elsevier B.V. , 2019 , Article)Seawater reverse osmosis (SWRO) is a commonly used desalination technique owing to its lesser environmental and economic impacts as compared to thermal desalination techniques. Antiscalants are used in SWRO to reduce ... -
Key applications and potential limitations of ionic liquid membranes in the gas separation process of CO2, CH4, N2, H2 or mixtures of these gases from various gas streams
( MDPI AG , 2020 , Article Review)Heightened levels of carbon dioxide (CO2) and other greenhouse gases (GHGs) have prompted research into techniques for their capture and separation, including membrane separation, chemical looping, and cryogenic distillation. ... -
Kinetic and thermodynamic investigation of CO2 adsorption-desorption on polyethyleneimine - Mesoporous silica
( TechConnect , 2016 , Conference Paper)Two CO2 solid sorbents based on polyethyleneimine, PEI (432 and 10k) impregnated into mesoporous silica (MPS) foam were synthesized and tested for CO2 capture. At ambient pressure, the amount of CO2 captured by these solid ... -
Kinetic modeling of microalgae growth and CO2 bio-fixation using central composite design statistical approach
( Elsevier B.V. , 2020 , Article)The optimum growth (μ), CO2 bio-fixation (RCO2) rates and the energy ratio (ER) of microalgae Chlorella vulgaris (C.v) were identified using central composite design statistical approach (CCD-SA). μ and RCO2 parameters ... -
Kinetic, equilibrium and thermodynamic studies for adsorption of nickel ions onto husk of oryza sativa
( Desalination Publications , 2019 , Article)This research focus onto batch adsorption of nickel ions (Ni(II)) onto husk of Oryza sativa (HOS) from aqueous solution at room temperature. Several techniques such as Fourier transform infrared, scanning electron microscopy ... -
Kinetic, equilibrium, and thermodynamic studies for adsorptive removal of cobalt ions by rice husk from aqueous solution
( Desalination Publications , 2020 , Article)Herein, batch adsorptive removal of cobalt ions (Co(II)) from aqueous solution was studied at room temperature. Adsorption of cobalt ions onto rice husk (RH) was confirmed by utilizing Fourier transform infrared, scanning ... -
Kinetics of CO 2 reaction with N-methyldiethanolamine and aminobutanol using stopped flow technique
( Institute of Physics Publishing , 2018 , Conference Paper)Removal of carbon dioxide (CO 2 ) from natural gas streams is mandatory to avoid pipeline corrosion, increase the heating value of the gas and reduce the gas volume in case of liquefied natural gas (LNG). The use of ... -
Kinetics of CO2 Adsorption/Desorption of Polyethyleneimine-Mesoporous Silica
( Wiley-VCH Verlag , 2017 , Article)The kinetics of adsorption of CO2 on solid sorbents based on polyethyleneimine/mesoporous silica (PEI/MPS) was studied by following the mass gain during CO2 flow. Linear (PEI-423) and branched (PEI-10k) polymers were ... -
Kinetics of humics removal from water and wastewater using granular activated carbon, iron-coated activated alumina, and beta ferric oxihydroxide
(2010 , Article)Application of kinetic models to represent the removal of humic substances from water and wastewater was investigated. An adsorbate-adsorbent system was represented by humic substances and three adsorbents, namely granular ... -
Kinetics of reactive absorption of CO2 using aqueous blend of potassium carbonate, ethylaminoethanol, and N-methyl-2-Pyrollidone (APCEN solvent)
( Taiwan Institute of Chemical Engineers , 2018 , Article)Employing the fall in the CO2 pressure method, the kinetics of the reactive absorption of CO2 in the aqueous blend of potassium carbonate, ethylaminoethanol, and N-methyl-2-Pyrollidone (APCEN solvent) is inspected by ... -
La-Based Perovskites as Oxygen-Exchange Redox Materials for Solar Syngas Production
( Materials Research Society , 2017 , Conference Paper)This contribution reports the synthesis and characterization of La-based perovskites which can be used for the production of syngas via solar thermochemical splitting of H2O/CO2. The La-based perovskites were synthesized ... -
Large CO2 uptake on a monolayer of CaO
( Royal Society of Chemistry , 2017 , Article)Density functional theory calculations are used to study gas adsorption properties of a recently synthesized CaO monolayer, which is found to be thermodynamically stable in its buckled form. Due to its topology and strong ... -
Laundry wastewater treatment using ultrafiltration under different operating conditions
( American Institute of Physics Inc. , 2018 , Conference Paper)The laundry wastewater of one of the hospitals in Qatar was selected and studied. It was found that hospital laundry is releasing considerable amount of wastewater i.e. 1800 - 2500 liters/cycle while washing 40 - 50 kg of ... -
Life cycle assessment of a microbial desalination cell for sustainable wastewater treatment and saline water desalination
( Elsevier Ltd , 2018 , Article)Microbial desalination cells (MDCs), with bifunctional capacity to simultaneously treat wastewater and desalinate seawater at low energy consumption, have attracted great attention in recent years. However, the environmental ... -
Life cycle assessment of osmotic microbial fuel cells for simultaneous wastewater treatment and resource recovery
( Springer Verlag , 2019 , Article)Purpose An osmotic microbial fuel cell (OsMFC) is derived from the integration of a forward osmosis (FO) membrane into a conventional microbial fuel cell (MFC), with enhanced performance in bioelectricity generation from ... -
Life cycle assessment of particulate recycled low density polyethylene and recycled polypropylene reinforced with talc and fiberglass
( Trans Tech Publications Ltd , 2011 , Conference Paper)Although recycled polymers and reinforced polymer composites have been in use for many years there is little information available on their environmental impacts. The goal of the present study is to analyze the environmental ... -
Life cycle environmental impact comparison of bioelectrochemical systems for wastewater treatment
( Elsevier B.V. , 2019 , Conference Paper)Bioelectrochemical systems (BESs) are developed to transform the energy harvested from the biomass into electricity. Different types of BESs including microbial fuel cell (MFC), microbial electrolysis cell (MEC), and ...