Separation Of The Petroleum System, 2015 Western Michigan University
Separation Of The Petroleum System, Ali Ibrahim Neamah
The Hilltop Review
This study discusses the overall process of crude oil separation as well as the necessary equipment used in the process. Also discussed and analyzed are potential issues seen in the crude oil extraction process. Reasons why these operation problems may occur are analyzed as well as treatment options for such occurring issues are discussed for employees and students alike. This research is based off of personal involvement at the Nasiriyah Degassing Station located in Dhi Qar, Iraq.
Effective Gravimetric Characterization For Lignocellulosic Biomass: Comparison Of Naoh-H2o2 And Ca(Oh)2-H2o2 Oxidation Pretreated Sugarcane Bagasse, 2015 Innovative Research Publications
Effective Gravimetric Characterization For Lignocellulosic Biomass: Comparison Of Naoh-H2o2 And Ca(Oh)2-H2o2 Oxidation Pretreated Sugarcane Bagasse, Innovative Research Publications Irp India, A.O. Ayeni, O. A. Adeeyo, A. Ayoola
Innovative Research Publications IRP India
In this study, alkaline peroxide oxidation pretreatment was evaluated for sugarcane bagasse, a lignocellulosic biomass. By comparing the effects of NaOHH2O2 and Ca(OH)2 on pretreatments at specified reaction time periods (3, 6, 9, and 12 h) and reaction temperatures (60, 70, 80, and 90 h), optimum responses in term of cellulose content, hemicellulose solubilization, and lignin removal were established. Optimum pretreatment conditions of 80 oC reaction temperature, 3 h reaction time, and 30 mL/L of water hydrogen peroxide concentration (1%H2O2) solubilized 69.5%(w/w) hemicellulose for the sodium hydroxide peroxide (SHP) pretreatments, 75.8%(w ...
Amine-Pillared Nanosheet Adsorbents For Co2 Capture Applications, 2015 Northeastern University
Amine-Pillared Nanosheet Adsorbents For Co2 Capture Applications, Hui Jiang
Chemical Engineering Master's Theses
Amine-functionalized solid adsorbents have gained attention within the last decade for their application in carbon dioxide capture, due to their many advantages such as low energy cost for regeneration, tunable structure, elimination of corrosion problems, and additional advantages. However, one of the challenges facing this technology is to accomplish both high CO2 capture capacity along with high CO2 diffusion rates concurrently. Current amine-based solid sorbents such as porous materials similar to SBA-15 have large pores diffusion entering molecules; however, the pores become clogged upon amine inclusion.
To meet this challenge, our group's solution involves the creation of ...
Modeling Of Liquid–Liquid Equilibrium Of Systems Relevant For Biodiesel Production Using Backtracking Search Optimization, A. Merzougui, Adrian Bonilla-Petriciolet, A. Hasseine, D. Laiadi, N. Labed
In this paper, the liquid–liquid equilibrium of thirty ternary systems relevant for biodiesel production was modeled using the NRTL and UNIQUAC equations and the Backtracking Search Optimization Algorithm (BSOA). Performance of this new optimization method for liquid-liquid equilibrium (LLE) parameter estimation, with and without the application of the closure equations, has been analyzed and compared with those obtained using the genetic algorithm (GA) and harmony search algorithm (HAS). Results on the estimation of the interaction parameters of local composition models showed that BSOA with the closure equations can provide promising results in tested biofuel systems. The use of closure ...
Nonlinear Parameter Estimation Of E-Nrtl Model For Quaternary Ammonium Ionic Liquids Using Cuckoo Search, 2015 Instituto Tecnologico de Aguascalientes
Nonlinear Parameter Estimation Of E-Nrtl Model For Quaternary Ammonium Ionic Liquids Using Cuckoo Search, Jose Enrique Jaime-Leal, Adrian Bonilla-Petriciolet, Vaibhav Bhargava, Seif E.K. Fateen
This study introduces the bio-inspired computation method namely Cuckoo Search (CS) as a parameter estimation method for modeling the mean activity coefficients of quaternary ammonium aqueous ionic liquids using the e-NRTL model. CS has not been used before to address this particular parameter estimation problem. Our calculations showed that the CS method was robust to perform the data modeling of this thermodynamic property of ionic liquids and that it can offer a global success rate of 90% for solving this challenging thermodynamic problem. CS offers a better performance than those obtained using other stochastic optimization methods such as simulated annealing ...
Analysis Of Synergistic And Antagonistic Adsorption Of Heavy Metals And Acid Blue 25 On Activated Carbon From Ternary Systems, 2015 Instituto Tecnologico de Aguascalientes
Analysis Of Synergistic And Antagonistic Adsorption Of Heavy Metals And Acid Blue 25 On Activated Carbon From Ternary Systems, Rigoberto Tovar-Gomez, Ma. Del Rosario Moreno-Virgen, Jaime Moreno-Perez, Virginia Hernandez-Montoya, Adrian Bonilla-Petriciolet, Carlos Duran-Valle
This article reports the antagonistic and synergistic adsorption involved in the multicomponent removal of acid blue 25 dye (AB25) and heavy metal ions (Zn2+, Ni2+, Cd2+) from ternary systems using an activated carbon modified with wastes of egg shell. Adsorption experiments were performed in ternary mixtures: Zn2+Ni2+ AB25, Ni2+Cd2+ AB25 and Zn2+Cd2+ AB25 where Taguchi experimental designs have been used to study the adsorbent performance and to identify the antagonistic and synergistic adsorption caused by the simultaneous presence of these water pollutants. Results indicated that these systems may show both competitive and synergistic adsorption. Dye AB25 enhanced ...
Process Alternatives For Biobutanol Purification: Design And Optimization, 2015 Universidad de Guanajuato
Process Alternatives For Biobutanol Purification: Design And Optimization, Eduardo Sánchez-Ramírez, Juan José Quiroz-Ramírez, Juan Gabriel Segovia-Hernández, Salvador Hérnandez, Adrian Bonilla-Petriciolet
Biobutanol is primarily used as a solvent or component in surface coatings. It has characteristics similar to petroleum fuel and is considered as a superior biofuel to ethanol. Biobutanol is more energy dense and less hygroscopic than ethanol, resulting in higher possible blending ratios with gasoline. Development of technologies for biobutanol production by fermentation has resulted in higher final biobutanol concentrations, less fermentation by-products and higher volumetric productivities during fermentation, together with less energy intensive separation and purification techniques. These new technological developments have the potential to provide a production process for biobutanol that is economically viable in comparison to ...
Applicability Of Fluidized Bed Reactor In Recalcitrant Compound Degradation Through Advanced Oxidation Processes: A Review, Abdul Aziz Abdul Raman
Abdul Aziz Abdul Raman
Treatment of industrial waste water (e.g. textile waste water, phenol waste water, pharmaceutical etc) faces limitation in conventional treatment procedures. Advanced oxidation processes (AOPs) do not suffer from the limits of conventional treatment processes and consequently degrade toxic pollutants more efficiently. Complexity is faced in eradicating the restrictions of AOPs such as sludge formation, toxic intermediates formation and high requirement for oxidants. Increased mass-transfer in AOPs is an alternate solution to this problem. AOPs combined with Fluidized bed reactor (FBR) can be a potential choice compared to fixed bed or moving bed reactor, as AOP catalysts life-span last for ...
Treatment Of Synthetic Oil Sands Tailing Water With Activated Carbon, 2014 The University of Western Ontario
Treatment Of Synthetic Oil Sands Tailing Water With Activated Carbon, Alfredo Martinez Iglesias
University of Western Ontario - Electronic Thesis and Dissertation Repository
The extraction of bitumen from the Canadian tar sands has thus far generated approximately 840 billion liters of oil sands process affected water (OSPW) that is currently being stored in containment ponds. OSPW is known to be acutely toxic to various organisms, due to the presence of naphthenic acids (NAs). The scale and sheer volume of OSPW being stored in tailing ponds have generated serious public concerns. Many emerging technologies have been investigated as treatment options for OSPW reclamation. This work studied the feasibility of using granular activated carbon (GAC) to adsorb several naphthenic acids in a model solution of ...
Process Simulation Of Biomass Gasification Integrated With A Solid Oxide Fuel Cell Stack, 2014 Dublin Institute of Technology
Process Simulation Of Biomass Gasification Integrated With A Solid Oxide Fuel Cell Stack, Wayne Doherty, Anthony Reynolds, David Kennedy
Biomass gasification-solid oxide fuel cell (BG-SOFC) combined heat and power (CHP) systems are of major interest in the context of climate change mitigation, energy security and increasing energy efficiency. Aspen Plus is employed to simulate various BG-SOFC CHP systems. The aim of the research work is to investigate the technical feasibility of these systems and to study the influence of important operating parameters and examine integration options. Systems based on dual fluidised bed steam gasification and tubular SOFC technologies are modelled. The cathode recycle and electric heater integration options are not attractive in comparison to the base case anode recycle ...
Scale-Up Methodology For Bench-Scale Slurry Photocatalytic Reactors Using Combined Irradiation And Kinetic Modelling, 2014 The University of Western Ontario
Scale-Up Methodology For Bench-Scale Slurry Photocatalytic Reactors Using Combined Irradiation And Kinetic Modelling, Patricio J. Valades Pelayo
University of Western Ontario - Electronic Thesis and Dissertation Repository
The present study focuses on developing a predictive methodology to scale-up a slurry annular photoreactor using a TiO2 Degussa P25 from the bench-scale to a pilot-plant scale. The bench-scale photoreactor is a Photo-CREC-Water II, a 2.65 L internally-irradiated slurry annular photocatalytic reactor. The pilot-plant scale photoreactor is a Photo-CREC Water Solar Simulator, a 9.8 L pilot-plant photoreactor, externally irradiated by eight lamps.
The adopted methodology allows the independent validation of radiative and kinetic models avoiding cross-correlation issues. The proposed approach involves two Monte Carlo methods, to model the Radiative Transfer Equation (RTE) inside each photoreactor. With this ...
Kinetic Experimental And Modeling Studies On Iron-Based Catalysts Promoted With Lanthana For The High-Temperature Water-Gas Shift Reaction Characterized With Operando Uv-Visible Spectroscopy And For The Fischer-Tropsch Synthesis, 2014 Brigham Young University - Provo
Kinetic Experimental And Modeling Studies On Iron-Based Catalysts Promoted With Lanthana For The High-Temperature Water-Gas Shift Reaction Characterized With Operando Uv-Visible Spectroscopy And For The Fischer-Tropsch Synthesis, Basseem Bishara Hallac
All Theses and Dissertations
The structural and functional roles of lanthana in unsupported iron-based catalysts for the high-temperature water-gas shift reaction and Fischer-Tropsch synthesis were investigated. The performance of the catalysts with varying lanthana contents was based on their activity, selectivity, and stability. With regard to the former reaction, extent of reduction of the iron in Fe2O3/Cr2O3/CuO/La2O3 water-gas shift catalysts is a key parameter that was characterized using UV-visible spectroscopy. Minor addition of lanthana (<0.5 wt%) produces more active and stable catalysts apparently because it stabilizes the iron-chromium spinel, increases the surface area of the reduced catalysts, enhances the reduction of hematite to the magnetite active phase, and facilitates the adsorption of CO on the surface of the catalyst modeled by an adsorptive Langmuir-Hinshelwood mechanism. Statistical 95% confidence contour plots of the adsorption equilibrium constants show that water adsorbs more strongly than CO, which inhibits the reaction rate. A calibration curve that correlates the oxidation state of surface iron domains to normalized absorbance of visible light was successfully generated and applied to the water-gas shift catalysts. UV-visible studies indicated higher extent of reduction for surface Fe domains for the catalysts promoted with 1 wt% of lanthana and showed potential to be a more convenient technique for surface chemistry studies than X-ray absorption near edge spectroscopy (XANES). Lanthana addition to iron-based Fischer-Tropsch catalysts enhances the olefin-to-paraffin ratio, but decreases their activity, stability, and selectivity to liquid hydrocarbons. Adding lanthana at the expense of potassium reduces the water-gas shift selectivity and enhances the activity and stability of the catalysts. Finally, a model that simulates heat and mass transfer limitations on the particle scale for the Fischer-Tropsch reaction applicable at lab-scale suggests optimal operating and design conditions of 256°C, 30 bar, and 80 mirons are recommended for higher selectivity to liquid hydrocarbons. The model considers pressure drop, deactivation, pore diffusion, film heat transfer, and internal heat transfer when solving for the optimal conditions, and maps them as functions of design variables. This model can be up-scaled to provide guidance for optimal design of commercial-size reactors.
Comparison Of Selexoltm And Rectisol® Technologies In An Integrated Gasification Combined Cycle (Igcc) Plant For Clean Energy Production, 2014 Innovative Research Publications
Comparison Of Selexoltm And Rectisol® Technologies In An Integrated Gasification Combined Cycle (Igcc) Plant For Clean Energy Production, Innovative Research Publications Irp India, Isah Yakub Mohammed, Mohamed Samah, Adam Mohamed, Gbadegesin Sabina
Innovative Research Publications IRP India
In this study, a comparison of SelexolTM and Rectisol® technologies in an Integrated Gasification Combined Cycle (IGCC) plant for Clean Energy production was carried out .The overall plant efficiency, individual solvent performance, the operating conditions and the energy requirements, the capital and operating cost were analyzed as well as the safety and environmental impacts. The result revealed that both the SelexolTM and Rectisol® reduce the overall plant efficiency by approximately 9% and 10% respectively. Rectisol® process showed ability to recover more carbon dioxide and sulfur than the SelexolTM process. It was also found that SelexolTM solvent gives good absorption at ...
Photobioreactor Design For Improved Energy Efficiency Of Microalgae Production, 2014 California Polytechnic State University - San Luis Obispo
Photobioreactor Design For Improved Energy Efficiency Of Microalgae Production, Alexander Burns
Master's Theses and Project Reports
Photobioreactor Design for Improved Energy Efficiency of Microalgae Production
The objective of this research was to investigate a new photobioreactor (PBR) design for microalgae production that retains the typical advantages of existing tubular PBRs while reducing power consumption by providing simultaneous culture circulation and gas exchange with airlift alone and no centrifugal recirculating pump. Traditional tubular PBR designs feature a compressed air supply and a centrifugal pump for culture circulation and gas exchange. Circulation and gas exchange in a closed-system PBR is necessary to keep the algae suspended and to provide sufficient mass transfer (mainly for the ...
Low Molecular Weight Glucosamine/L-Lactide Copolymers As Potential Carriers For The Development Of A Sustained Rifampicin Release System: Mycobacterium Smegmatis As A Tuberculosis Model, 2014 University of Nebraska-Lincoln
Low Molecular Weight Glucosamine/L-Lactide Copolymers As Potential Carriers For The Development Of A Sustained Rifampicin Release System: Mycobacterium Smegmatis As A Tuberculosis Model, Jorge Ragusa
Chemical & Biomolecular Engineering Theses, Dissertations, & Student Research
Tuberculosis, a highly contagious disease, ranks as the second leading cause of death from an infectious disease, and remains a major global health problem. In 2013, 9 million new cases were diagnosed and 1.5 million people died worldwide from tuberculosis. This dissertation aims at developing a new, ultrafine particle-based efficient antibiotic delivery system for the treatment of tuberculosis. The carrier material to make the rifampicin (RIF)-loaded particles is a low molecular weight star-shaped polymer produced from glucosamine (molecular core building unit) and L-lactide (GluN-LLA). Stable particles with a very high 50% drug loading capacity were made via electrohydrodynamic ...
Diffusion And Adsorption Coefficients Of Aromatic Hydrocarbons In Gas Chromatography Capillary Columns, 2014 The University of Western Ontario
Diffusion And Adsorption Coefficients Of Aromatic Hydrocarbons In Gas Chromatography Capillary Columns, Gabriela Navarro Tovar
University of Western Ontario - Electronic Thesis and Dissertation Repository
This study focuses on a mathematical description of aromatic species elution peaks from a gas chromatographic BPX5 capillary column. Using the chromatographic peaks, statistical moments are calculated for toluene, naphthalene, phenol and 2-naphthol. This thesis reports two modelling approaches involving laminar gas flow, distribution coefficients (Ks) and diffusion coefficients in the stationary phase (Ds).
Firstly, a model with equilibrium adsorption is considered to describe symmetric peaks for toluene and naphthalene. Moreover, a model with non-equilibrium adsorption is proposed to describe asymmetric peaks of phenol and 2-napthol. In addition to the Ks and Ds parameters, this model ...
Effect Of Plasticizer On Oxygen Permeability Of Cast Polylactic Acid (Pla) Films Determined Using Dynamic Accumulation Method, 2014 Bogor Agricultural University
Effect Of Plasticizer On Oxygen Permeability Of Cast Polylactic Acid (Pla) Films Determined Using Dynamic Accumulation Method, Kurniawan Yuniarto, Bruce A. Welt, Aris Purwanto, Hadi Karia Purwadaria, Ayman Abdellatief, Titi C. Sunarti, Setyo Purwanto
Journal of Applied Packaging Research
Polylactic acid (PLA) is becoming an increasingly important biopolymer for packaging applications. PLA brittleness limits its applicability. This study evaluated PLA properties with increasing amounts of added polyethylene glycol (PEG) plasticizer. Oxygen transmission rate (OTR) of cast films was determined using the newly available Dynamic Accumulation (DA) method. Arrhenius temperature sensitivity of OTR and polymer Permeability was also determined. Permeability of neat PLA is 4.848 ml mm (STP)/m2 s kPa; hence, 4.84 ml mm (STP)/m2 s kPa, 4.07 ml mm (STP)/m2 s kPa and 5.42 ml mm (STP)/m2 ...
Electrochemically Active Biofilm Assisted Synthesis Of Ag@Ceo2 Nanocomposites For Antimicrobial Activity, Photocatalysis And Photoelectrodes, Mohammad Mansoob Khan Dr, S. A. Ansari, J. H. Lee, M. O. Ansari, J Lee, M. H. Cho
Dr. Mohammad Mansoob Khan
Ag@CeO2 nanocomposites were synthesized by a biogenic and green approach using electrochemically active biofilms (EABs) as a reducing tool. The as-synthesized Ag@CeO2 nanocomposites were characterized and used in antimicrobial, visible light photocatalytic and photoelectrode studies. The Ag@CeO2 nanocomposites showed effective and efficient bactericidal activities and survival test against Escherichia coli O157:H7, and Pseudomonas aeruginosa. The as-synthesized Ag@CeO2 nanocomposites also exhibited enhanced visible light photocatalytic degradation of 4-nitrophenol and methylene blue than pure CeO2. A photocatalytic investigation showed that the Ag@CeO2 nanocomposites possessed excellent visible light photocatalytic activities compared to pure CeO2. Electrochemical impedance spectroscopy ...
Chemical Beneficiation Of Phosphate Rock, 2014 Laval University, Quebec City, Canada
Chemical Beneficiation Of Phosphate Rock, Fathi Habashi
Phosphate producers could eliminate flotation plants and waste by adopting well-established hydrometallurgical processes and using dilute nitric or hydrochloric acid to leach phosphate from rock.
A New Process To Upgrade Ilmenite To Synthetic Rutile, 2014 Laval University, Quebec City, Canada
A New Process To Upgrade Ilmenite To Synthetic Rutile, Fathi Habashi
Ilmenite occurs in black sand at the mouth of great rivers as in India, or as massive deposits like in Quebec Province in Canada. It is unsuitable for processing into pigment or for metal production because of its high iron content and its low grade. Pyrometallurgical and hydrometallurgical methods have been developed to cope with this problem which resulted in the production of two commercial products that became known as synthetic rutile and Sorelslag. Attempts are also underway to produce TiO2 pigment directly from ilmenite. This report presents a newly developed process called the Magpie process, which enables the production ...