Chemical Engineering: Recent submissions
Now showing items 921-940 of 1174
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Evaluation of redox performance of silver and transition metal-doped ternary ceria oxides for thermochemical splitting of CO2
( John Wiley and Sons Ltd , 2019 , Article)Synthesis of Ce0.9M0.05Ag0.05O2‐δ materials (where, M = Ni, Zn, Mn, Fe, Cu, Cr, Co, Zr) via coprecipitation of hydroxide method and examination of these materials toward multiple thermochemical CO2 splitting (CS) cycles ... -
Highly active and stable bi-functional NiCoO2 catalyst for oxygen reduction and oxygen evolution reactions in alkaline medium
( Elsevier Ltd , 2019 , Article)Single step solution combustion technique was used to synthesize NiO, Co3O4 and NiCoO2 mixed metal oxide with good crystallinity and uniform properties. XRD spectrum indicates the existence of cubic NiCoO2 phase without ... -
Molecular and electronic structure elucidation of Fe2+/Fe3+ complexed chelators used in iron sulphide scale removal in oil and gas wells
( Wiley-Liss Inc. , 2019 , Article)Quantum chemical calculations based on DFT are employed to study the electronic structure and binding affinity of chelators used in the removal of iron sulphide scales. Three chelating agents, EDTA, HEDTA, and DTPA, are ... -
Use of DPSIR Framework to Analyze Water Resources in Qatar and Overview of Reverse Osmosis as an Environment Friendly Technology
( John Wiley and Sons Inc. , 2019 , Article Review)Qatar and other countries of Gulf Cooperation Council are among the most water scarce countries in the world and are being characterized as “high‐water risk” countries by Water Resource Institute. Therefore, it is important ... -
A technoeconomic assessment of microalgal culture technology implementation for combined wastewater treatment and CO2 mitigation in the Arabian Gulf
( Institution of Chemical Engineers , 2019 , Article)A technoeconomic assessment (TEA) has been conducted of the feasibility of large-scale application of microalgal culture technology (MCT) to the combined mitigation of CO2 emissions from flue gases and nutrient discharges ... -
Effect of pH on acidic and basic chelating agents used in the removal of iron sulfide scales: A computational study
( Elsevier B.V. , 2019 , Article)Iron sulfide scale is a major challenge in the upstream section of the oil and gas industry. It is responsible for precipitate formation in tubulars, and it damages equipment. This leads to a loss in production. Mechanical ... -
Highly efficient nonenzymatic glucose sensors based on CuO nanoparticles
( Elsevier B.V. , 2019 , Article)In this work, copper nanoparticles using three different modes are synthesized and evaluated for electrochemical properties towards non-enzymatic glucose biosensors. Copper oxide nanoparticles thus obtained are characterized ... -
Probing the effect of combustion controlled surface alloying in silver and copper towards ORR and OER in alkaline medium
( Elsevier B.V. , 2019 , Article)Bi-metallic silver-copper nanoparticles were synthesized using two modes of combustion synthesis, known as Solution Combustion Synthesis (SCS) and Second Wave Combustion Synthesis (SWCS) to enhance surface alloying in Cu ... -
Adsorption kinetic, equilibrium and thermodynamic studies of eosin-B onto anion exchange membrane
( Desalination Publications , 2019 , Article)In this research, batch adsorption of anionic dye Eosin-B (EB) onto anion exchange membrane (AEM) (BI) from aqueous solution has been investigated at room temperature. The effect of some operating conditions such as ... -
High and Ultra-high Performance Concretes: A Solution to Reinforced Concrete Durability under Harsh Climate of Arabian Gulf
( Qatar Univesrity Press , 2020 , Conference Paper)Reinforced concrete (RC) infrastructure in the Arabian Gulf region deteriorates under severe environmental conditions after only short service life. To overcome this problem, it is imperative to employ high-quality concretes ... -
Framework for Design under Uncertainty Including Inherent Safety, Environmental Assessment, and Economic Performance of Chemical Processes
( American Chemical Society , 2019 , Article)Typically, analysis and design of chemical processes is carried out considering average values of inherently uncertain data that pertain to key design and process variables that shape its performance. In this work, a ... -
Photocatalytic conversion of CO 2 and H 2 O to useful fuels by nanostructured composite catalysis
( Elsevier B.V. , 2019 , Article)Cu-TiO2 nano-catalysis were successfully prepared using sol-gel method and used for solar photo-reduction of CO2 in gas and liquid phase. Adding Cu to TiO2 matrix modify its crystalline structure, improved its optical ... -
Improving the Performance of Attached-Growth Wastewater Treatment Processes by Altering the Support Media Surface
( American Society of Civil Engineers (ASCE) , 2019 , Article)This study investigated the impact of altering the surface characteristics of support media used in attached-growth processes on the performance of biological wastewater treatment. The surface alteration was achieved through ... -
Utilization of residual organics of Labaneh whey for renewable energy generation through bioelectrochemical processes: Strategies for enhanced substrate conversion and energy generation
( Elsevier Ltd , 2019 , Article)Labaneh whey (LW)that is rich in residual organics was evaluated for bioelectricity generation using microbial fuel cell (MFC)in two different configurations namely single chamber (MFC-SC)and dual chamber (MFC-DC)MFCs. The ... -
Investigating the effects of mixing ionic liquids on their density, decomposition temperature, and gas absorption
( Institution of Chemical Engineers , 2019 , Article)In order to counter the detrimental effect of chemicals on the environment, the academic and industry research interest have shifted towards “green” solvents. Ionic liquids (ILs) are salt-like compounds that, with few ... -
Effect of gas templating of resorcinol-formaldehyde xerogels on characteristics and performances of subsequent activated carbons
( Elsevier Ltd , 2019 , Article)Gas-templated resorcinol formaldehyde-activated carbon xerogels (GT-RF-ACXs) were prepared from resorcinol-formaldehyde xerogels that were templated by infusing different gases (e.g., nitrogen, oxygen, methane, ethylene, ... -
Production of sensitive gas sensors using CuO/SnO2 nanoparticles
( Springer Verlag , 2019 , Article)Metal oxide nanoparticles, such as CuO and SnO2, are outstanding systems for H2S gas sensing in air. In this work, those nanoparticles were deposited with different mixing percentages on substrates to form percolating ... -
Industrial effluent treatment with immersed MBRs: Treatability and cost
( IWA Publishing , 2019 , Article)A comprehensive OPEX analysis for both municipal and industrial wastewaters has been conducted encompassing energy, critical component (membrane) replacement, chemicals consumption, waste disposal and labour. The analysis ... -
Multifunctional self-healing polymeric nanocomposite coatings for corrosion inhibition of steel
( Elsevier B.V. , 2019 , Article)The present work focuses on the self-healing and corrosion behavior of novel epoxy based coatings containing epoxy monomer (EM) and dodecylamine (DDA) as self-healing and corrosion inhibitor, respectively. The coating ... -
Role of TiO2 and carbon nanotubes on polyethylene, and effect of accelerated weathering on photo oxidation and mechanical properties
( John Wiley and Sons Ltd , 2019 , Article)In this work, LLDPE-based composite films were prepared by melt mixing followed by compression molding to investigate the role of titanium oxide nanoparticles (TONPs) and/or multiwalled carbon nanotubes (CNTs) on the ...
