The Effect Of Mcm-41 Addition To Pva/Pan/Pvp Polymer Electrolyte For Zinc-Air Batteries,
2018
Faculty of Engineering
The Effect Of Mcm-41 Addition To Pva/Pan/Pvp Polymer Electrolyte For Zinc-Air Batteries, Sirinuch Nanthapong
Chulalongkorn University Theses and Dissertations (Chula ETD)
A membrane separator is one of the main components in zinc-air batteries playing an important role in controlling the mass transfer for the electrochemical reaction in the battery which determines the battery performance. This work aimed to develop a new membrane separator for the zinc-air battery. Polyvinyl alcohol (PVA), polyacrylonitrile (PAN), polyvinylpyrrolidone (PVP), and their blends were used for the fabrication of separator in this work. In addition, an inorganic nanoparticle with high hydroxide content such as MCM-41 was also applied as the filler for the polymers. The results revealed that the addition of PAN in PVA enhanced the electrolyte …
Application Of Amine-Functionalized Titanium Dioxide Wrapped In Reduced Graphene Oxide In Photocatalytic Degradation Of Methylene Blue,
2018
Faculty of Engineering
Application Of Amine-Functionalized Titanium Dioxide Wrapped In Reduced Graphene Oxide In Photocatalytic Degradation Of Methylene Blue, Sirinya Kanjanapanasont
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research investigated the effect of reduced graphene oxide (rGO) addition to amine-functionalized titanium dioxide (APTMS-TiO2). The loading amount of rGO was varied from 0 to 0.05 %wt. Also, the effect of the amount of 3-aminopropyltrimethoxysilane (APTMS) was studied. To synthesize TiO2/rGO catalysts, the amount of APTMS was varied at 2.21 and 22.1 mmol. TiO2 catalyst was synthesized via a sol-gel method. Next, the surface of TiO2 was modified with APTMS by refluxing. Then graphene oxide was wrapped around APTMS-TiO2 and was reduced to rGO using hydrazine and ammonia. In the experiment, the catalyst was dispersed in methylene blue solution …
Design And Performance Evaluation Of Integrated System Of Hydrotreating And Hydrogen Generation For Bio-Hydrogenated Diesel Fuel Production From Palm Oil,
2018
Faculty of Engineering
Design And Performance Evaluation Of Integrated System Of Hydrotreating And Hydrogen Generation For Bio-Hydrogenated Diesel Fuel Production From Palm Oil, Siriporn Boonsuk
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research studied the simulations of the integrated systems between of hydrotreating and hydrogen generation with various selectivity of deoxygenation (DO) pathways (i.e. decarboxylation (DCO2), hydrodecarbonylation (HDCO), and hydrodeoxygenation (HDO)). Two integrated systems were proposed i.e. 1) integrated system between single-step hydrotreating and propane steam reforming (as called "single-step integrated system") and 2) integrated system between two-step hydrotreating (hydrolysis+DO) and glycerol steam reforming (as called "two-step integrated system"). Results revealed that, among DO pathways, DCO2 exhibited the lowest total minimum energy requirement (total MER) and the highest total efficiency for both integrated systems mainly due to lower electricity requirement to …
Effect Of Ceo2 And La2o3 Promoters On Ni/Al2o3 Oxygen Carrier Performance In Chemical Looping Steam Reforming Of Ethanol For Hydrogen Production,
2018
Faculty of Engineering
Effect Of Ceo2 And La2o3 Promoters On Ni/Al2o3 Oxygen Carrier Performance In Chemical Looping Steam Reforming Of Ethanol For Hydrogen Production, Supalak Isarapakdeetham
Chulalongkorn University Theses and Dissertations (Chula ETD)
The effects of Ce and/or La on NiO/Al2O3 were studied in chemical looping steam reforming of ethanol. Oxygen carriers (OCs) were prepared by wet impregnation method and characterized by various techniques. The redox test was performed by alternating between fuel feed (FFS) and air feed step (AFS) at 500oC. It was found that Ce- and La-doped improved the OCs' properties. A suitable amount of Ce- and La-doping helped increase carbon tolerance due to oxygen storage capacity and mobility. The solubility limit was found at 50 mol% La in solid solution. At higher La-doping, La2O3 dispersed on the surface and adsorbed …
Preliminary Study On Synthesis And Characterization Of The Star-Shaped Poly (Ethylene Glycol) Through Polycondensation Reaction,
2018
Faculty of Engineering
Preliminary Study On Synthesis And Characterization Of The Star-Shaped Poly (Ethylene Glycol) Through Polycondensation Reaction, Tanchanok Wongkhan
Chulalongkorn University Theses and Dissertations (Chula ETD)
The synthesis of star-shaped poly(ethylene glycol) was synthesized from pentetic acid (PA) and poly(ethylene glycol) (PEG) by polycondensation reaction in order to solve the problem of the melt strength of the molten polymer of poly(lactic acid). In this study, the star-shaped poly(ethylene glycol) were synthesized with a different molecular weight of neat poly(ethylene glycol) of 200, 400 and 600 g/mol. After that, the chemical structure of product-PEG was investigated by FTIR and NMR techniques. FTIR spectra of the product-PEG exhibited carbonyl peak due to the reaction between hydroxyl groups of PEG and carboxyl groups of PA. The NMR spectra of …
Lactic Acid Production From Glucose By Using Divalent Transition Metal Oxide Catalyst On Magnesium Oxide Support Without Alkaline Solution,
2018
Faculty of Engineering
Lactic Acid Production From Glucose By Using Divalent Transition Metal Oxide Catalyst On Magnesium Oxide Support Without Alkaline Solution, Tanyatorn Udomcharoensab
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research was studied the effects of the type of divalent metal oxide (Cu, Co, Ni, and Zn) supported on magnesium oxide catalyst using the hexadecyltrimethylammonium bromide (CTAB) as the capping agent with metal loading at 1.5, 5, and 10 mmol/gram-catalyst on lactic acid production from glucose. To achieve the lactic acid production of lower reactor corrosion rate and being environmentally friendly, the reaction was performed in an alkali additive-free environment. The catalysts were synthesized by hydrothermal method and characterized by various techniques. The XRD pattern of spent CuCTAB/MgO and CoCTAB/MgO catalyst showed the reduced metal species indicated the used …
Effect Of Tio2 Polymorphs And Crystallite Size On The Catalytic Properties Of Pt/Tio2 In The Selective Hydrogenation Of Furfural To Furfuryl Alcohol,
2018
Faculty of Engineering
Effect Of Tio2 Polymorphs And Crystallite Size On The Catalytic Properties Of Pt/Tio2 In The Selective Hydrogenation Of Furfural To Furfuryl Alcohol, Thunyaporn Kaewla-Ueat
Chulalongkorn University Theses and Dissertations (Chula ETD)
Furfuryl alcohol (FA) is an important intermediate for the manufacturing of many fine chemical products such as furan, resin, vitamin C, and lysine. In this research, the selective hydrogenation of furfural to FA was carried out in a batch reactor at 50ºC, 20 bar H2 and 2 h reaction time using Pt (0.5 wt. %) on TiO2 support. The Pt/TiO2 catalysts were prepared by the incipient wetness impregnation on different commercial TiO2 polymorphs and different temperatures calcined TiO2 sol-gel. Among the commercially available TiO2, it was found that Pt supported on P25 exhibited the highest furfural conversion and selectivity of …
Effects Of Monovalent Ions On Low Salinity Waterflooding In Shaly-Sandstone Reservoir,
2018
Faculty of Engineering
Effects Of Monovalent Ions On Low Salinity Waterflooding In Shaly-Sandstone Reservoir, Ativish Yomchan
Chulalongkorn University Theses and Dissertations (Chula ETD)
Multi-component Ion Exchange (MIE) was proved to be a major mechanism occurred during Low Salinity Waterflooding (LSWF). Reduction of both total salinity and concentration of divalent ions of injected water together with a presence of monovalent ion results in dissolution of divalent ions linking between rock surface and oil. As a consequence, oil is liberated from rock surface. This study aims to study effects of monovalent ions in MIE mechanism. Stirring test is performed and results show that ion with less hydration radius tends to be more active in MIE; hence, potassium ion and cesium ion illustrate potential in oil …
Evaluation Of Wax Deposition Prevention For Crude Oil Production From Mae Soon Oil Field,
2018
Faculty of Engineering
Evaluation Of Wax Deposition Prevention For Crude Oil Production From Mae Soon Oil Field, Htet Myat Min
Chulalongkorn University Theses and Dissertations (Chula ETD)
Waxy crude oils are normally found in petroleum reservoirs. Crude oil with the wax formation is one of the crucial problems for flow assurance of pipeline transportation in oil and gas production. This issue can commonly cause wax deposition problem and it has made a huge amount of economic losses such as production, time and maintenance cost. Therefore, it is a critical aspect to deal with wax deposition for crude oil flow assurance, especially at the surface region in cold climate. In this study, n-heptane and poly (maleic anhydride-alt-1-octadecane) or MA as the inhibitors with different concentrations will be measured …
Pre-Feasibility Study Of Silica Sand Processing Plant In Sihanoukville Province, Cambodia,
2018
Faculty of Engineering
Pre-Feasibility Study Of Silica Sand Processing Plant In Sihanoukville Province, Cambodia, Sochea Ros
Chulalongkorn University Theses and Dissertations (Chula ETD)
Nowadays, bottom ash and flue gas desulfurization (FGD) gypsum are by-products of the coal combustion process from coal-fired power plant. Bottom ash has been applied in many applications such as landfill, cement industry etc., and FGD gypsum is applied in cement and wallboard industry. Also, they can be used in agricultural activities for soil amendment but the amount of bottom ash and FGD used in this function is still low. Furthermore, biochar has long been used to improve soil fertility. The positive impacts of biochar amendment on soils are that it can increase soil capacity to adsorb plant nutrients, decrease …
Utilization Of Biochar Coupled With Coal Combustion Products For Degraded Soil Amendment,
2018
Faculty of Engineering
Utilization Of Biochar Coupled With Coal Combustion Products For Degraded Soil Amendment, Thidphavanh Sengsingkham
Chulalongkorn University Theses and Dissertations (Chula ETD)
Low Salinity Waterflooding (LSWF) has been intensively studied worldwide as it is a low-cost technique. By injecting water with very low salinity compared to formation water in the reservoir, the method changes equilibrium between rock surface, oil and surrounding water, causing wettability alteration through Multi-component Ion Exchange (MIE) mechanism. In this study, ammonium ion is added into low salinity water to facilitate the MIE mechanism in shaly-sandstones reservoir. Experiments are performed with shaly-sandstone rock as it contains both calcium and magnesium ions as part of clays and ammonium ion can express its potential by triggering MIE mechanism. Stirring test, spontaneous …
Green Composites Of Polylactic Acid Filled With Natural Fiber For Biodegradation Application,
2018
The Petroleum and Petrochemical College
Green Composites Of Polylactic Acid Filled With Natural Fiber For Biodegradation Application, Chamaiporn Yamoum
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research focuses on how to use natural fibers available from agricultural residues to produce biodegradable materials such as mulch films. Green composites were prepared from natural fibers (peanut shell and bagasse fiber) and polylactic acid (PLA) together with plasticizers. The presence of plasticizers improved PLA molecular mobility as seen by the reduction of glass transition, cold crystallization, and melting temperatures. The addition of natural fibers into PLA brought down decomposition temperature when compared to PLA. The morphological study of the composites showed poor interfacial adhesion between natural fibers and PLA matrix. Moreover, the loading of plasticizers improved distribution of …
Production Of Biojet Fuel From Palm Fatty Acid Distillate Over Ni/Hzsm-12 Catalyst,
2018
The Petroleum and Petrochemical College
Production Of Biojet Fuel From Palm Fatty Acid Distillate Over Ni/Hzsm-12 Catalyst, Chayanee Hiranyasiri
Chulalongkorn University Theses and Dissertations (Chula ETD)
Generally, jet fuels are mainly derived from the refining of petroleum feedstock which exhaust greenhouse gases. Therefore, biojet fuel is introduced as an alternative way to solve the problem. Moreover, jet fuel must have a freezing point about -47 °C or below so iso-paraffins which have low freezing point are required. In this study, the hydroprocessing of palm fatty acid distillate (PFAD) over synthesized Ni/HZSM-12 and conventional Ni/HY catalysts which have different morphology and pore size for producing biojet fuel (hydrocarbon in a range of C9-C14) was studied in a continuous flow fixed-bed reactor under conditions of 350-400 °C, 10-30 …
Chance Constrained Optimization For Petrochemical Supply Chain With The Validation Technique,
2018
The Petroleum and Petrochemical College
Chance Constrained Optimization For Petrochemical Supply Chain With The Validation Technique, Kan Rungphanich
Chulalongkorn University Theses and Dissertations (Chula ETD)
Nowadays, the profit is more concern in industry due to high business competition. Therefore, reducing the cost is needed to survive competition. Stochastic optimization had been interesting method to reduce opportunity and over-demand loss in the supply chain under uncertainties. Chance constrained optimization is one of the approaches to stochastic optimization. The uncertainties are included in chance constraint of event under level of confidence. This method is used to design the realistic supply chain giving more stabilities than deterministic optimization. The two case studies have been used to show the effectiveness of chance constrained optimization: the simple supply chain network …
Novel Microemulsion Formation By The Hydrophilic- Lipophilic Deviation Concept Using Carboxylate Extended Surfactants For Eor Application,
2018
The Petroleum and Petrochemical College
Novel Microemulsion Formation By The Hydrophilic- Lipophilic Deviation Concept Using Carboxylate Extended Surfactants For Eor Application, Suchawadee Kumkhuntod
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Winsor type III (middle phase) microemulsion formation is widely used for enhanced oil recovery (EOR) application. A novel carboxylate surfactant has been an attractive surfactant for the oil recovery due to high chemical stability in harsh reservoir conditions (i.e., high brine concentration and high temperature). This study aims to formulate the middle phase microemulsion in order to obtain the minimum IFT and high solubilization capacity with binary anionic surfactant system using sodium dioctyl sulfosuccinate (AOT) and carboxylate extended surfactants with varying the polyethylene oxide number (EO = 2, 4 and 6) at three mixing molar ratios of 5:5, 7:3 …
Detergency Of Mixed Oily And Particulate Soils By Single And Mixed Surfactant Systems,
2018
The Petroleum and Petrochemical College
Detergency Of Mixed Oily And Particulate Soils By Single And Mixed Surfactant Systems, Thanawan Teerasathittham
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research studies the detergency performance of mixed surfactants of (anionic and nonionic surfactants) for mixed oily and particulate soils on polyester/cotton blend fabric, and compares with a commercial liquid detergent. Palm oil and kaolinite are used as representatives of oily soil and particulate soil, respectively. The anionic surfactants used in this study are methyl ester sulfonate (MES), linear alkyl benzene sulfonate (LAS) and sodium dodecyl sulfate (SDS). The nonionic surfactants are alcohol ethoxylate 7EO (AE7) and alcohol ethoxylate 9EO (AE9). The effect of surfactant concentrations, NaCl concentration, and mixing ratios of the selected surfactant formulations on detergency performance are …
Evaluation Of Environmental Impacts For Non-Metallic Part In Waste Printed Circuit Boards (Pcbs) Using Combined Material Flow Analysis (Mfa) And Life Cycle Assessment (Lca),
2018
The Petroleum and Petrochemical College
Evaluation Of Environmental Impacts For Non-Metallic Part In Waste Printed Circuit Boards (Pcbs) Using Combined Material Flow Analysis (Mfa) And Life Cycle Assessment (Lca), Warisara Rungsitikul
Chulalongkorn University Theses and Dissertations (Chula ETD)
Printed circuit boards (PCBs) have become common components in most electric and electronic equipment. Because of their wide ranges of application, waste PCBs is becoming one of the most rapidly growing wastes. Recycling of waste PCBs is an important subject not only for the protection of the environment but also for the recovery of valuable metals. This study aimed to evaluate the waste PCBs management strategies using the combination of material flow analysis (MFA, STAN v.2.6.801) and life cycle assessment (LCA, SimaPro v.8.3.0.0) methods. The waste management scenario was considered for three different options; disposal of the waste PCBs (Option …
Adsorption Of Methane And Carbon Dioxide On Activated Carbon And Metal Organic Frameworks,
2018
The Petroleum and Petrochemical College
Adsorption Of Methane And Carbon Dioxide On Activated Carbon And Metal Organic Frameworks, Chutima Sudsuansi
Chulalongkorn University Theses and Dissertations (Chula ETD)
Natural gas has gain popularity for transportation among other fuels since it is the cleanest burning fossil fuel. However, the important challenge for utilizing natural gas is its comparatively low volumetric energy storage density. Consequently, a suitable natural gas storage is needed. Adsorbed natural gas (ANG) is an interesting alternative because it could be expected to reduce the cost and potential damage from compressed natural gas (CNG) and liquefied natural gas (LNG) technology. Comparative adsorption of methane and carbon dioxide on activated carbon ZIF-8, UiO-66, and MIL-53 (Al) was investigated at 35 °C and up to 100 psi. The addition …
Identification Of Crude Oils And Fuel Oils After Weathering Using Biomarkers, Pyrogenic Index And Asphaltenes Contents,
2018
The Petroleum and Petrochemical College
Identification Of Crude Oils And Fuel Oils After Weathering Using Biomarkers, Pyrogenic Index And Asphaltenes Contents, Hathairat Thongkorn
Chulalongkorn University Theses and Dissertations (Chula ETD)
Oil spills have become a global problem. This is one of the serious problems in marine environment. The spills are generally from reservoir zipping, accident or unauthorized drainage. Typically, the spilled oils are fuel oils or crude oils which are difficult to differentiate. After oil spill incident, oils are undergone weathering processes such as evaporation, dissolution, and biodegradation etc., which are main factor of depleting hydrocarbon. This work focuses on the distribution of hydrocarbon and diagnostic ratio of polycyclic aromatic hydrocarbons such as pristane, phytane, phenanthrene, pyrene, chrysene and biomarker in hopane group after weathering processes. Moreover, measuring of Al, …
Heat Exchanger Network Retrofit Under Fouling Effect,
2018
The Petroleum and Petrochemical College
Heat Exchanger Network Retrofit Under Fouling Effect, Jaturaporn Yanyongsak
Chulalongkorn University Theses and Dissertations (Chula ETD)
The energy conservation by heat exchanger network (HEN) is important in process design according to an increase of energy costs and global environmental concerns. To minimize the energy consumption with positive net present value (NPV), the retrofitted HEN plays an important role in process energy systems. The HEN retrofit model is based on stage-wise superstructure by Yee and Grossmann (1990). In addition, fouling deposition on the surface area of heat exchangers causes extra energy consumption, production loss and maintenance costs. The new proposed model is retrofitting HEN with fouling effects. This method achieves HEN with the optimal trade-offs between energy …
