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2013 Asian Pacific Conference on Chemical,Material and Metallurgical engineering(APCCMME 2013)

作者： Sarunya Promkotra Tawiwan Kangsadan Department of Geotechnology Faculty of Technology Khon Kaen University Chemical and Process Engineering Program Department of Mechanical and Process EngineeringThe Sirindhorn International Thai-German Graduate School of Engineering (TGGS) King Mongkut’s University of Technology North Bangkok (KMUTNB)

A selected material, polystyrene microsphere series, is created as a building block of two-dimensional(2D) aggregates to examine scaling behaviors of the compressive stress condition. The 2D aggregated clusters are confined between the two cantilevers of 30 micron in diameter. These cantilevers can slide and force the aggregates move in the lateral direction. The compressive yield stress is directly measured during experiments by quantitative image analysis on the optical microscope. Locations of polystyrene aggregates are traced by Discrete Element Method(DEM), computer simulation. The 2D mechanical properties are examined for the particle size scaling behaviors as a function of particle area fraction and the average particle coordination number. The larger the particle size, the greater the modulus and the yield stress.

关键词： Compressive strength 2D aggregation colloids discrete element method(DEM)

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Petroleum Sources by Dynamic Petroleum Migration in Gas Reservoir

Petroleum Sources by Dynamic Petroleum Migration in Gas Rese...

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2013 International Conference on Frontiers of Environment,Energy and Bioscience(ICFEEB 2013)

作者： SARUNYA PROMKOTRA TAWIWAN KANGSADAN Department of Geotechnology Faculty of Technology Khon Kaen University Chemical and Process Engineering Program Department of Mechanical and Process Engineering The Sirindhorn International Thai-German Graduate School of Engineering (TGGS) King Mongkut's University of Technology North Bangkok (KMUTNB)

Secondary migration of a petroleum reservoir relates to the petroleum production in the gas production plant of a gas reservoir in the northeast of Thailand. Petroleum migration affects to buoyancy and capillary force with emphasis upon the relationship between condensate and other fluid hydrocarbons. Dynamic migration of petroleum is calculated within a gas reservoir. Pore-throat radius of mudstone is varied in the range of 0.55 to 2.10 μm, and the throat radius of carbonate reservoir rocks is in the variety of 0.49 to 8.65 μm. The capillary pressures and column height are decreasing inversely proportional to the throat radius. Petroleum migration with small throat radius resists the fluid migration in the column due to low buoyancy to generate its movement. The defined criteria for carbonate rocks can correlate to the reservoir rocks and also geological barriers. This outcome is able to conclude for the criteria that the throat radius should be more than 7.65 μm and column height for capillary pressure is less than 9.39 meters. Therefore, this secondary migration is appropriate for the petroleum reservoirs.

关键词： Petroleum Sources by Dynamic Petroleum Migration in Gas Reservoir

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Conventional Homogeneous Catalytic process with Continuous-typed Microwave and Mechanical Stirrer for Biodiesel Production from Palm Stearin

Conventional Homogeneous Catalytic Process with Continuous-t...

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2012 4th International Conference on Chemical,Biological and Environmental engineering

作者： Wilaiporn Garnwitayee Tawiwan Kangsadan Suramate Chalermwisutkul Chemical and Process Engineering Program The Sirindhorn International Thai-German Graduate School of EngineeringKing Mongkut’s University of Technology North BangkokBangkok10800Thailand Communications Engineering Program The Sirindhorn International Thai-German Graduate School of EngineeringKing Mongkut’s University of Technology North BangkokBangkok10800Thailand

In this study,biodiesel production from palm stearin was carried out by applying a mechanical stirrer and using continuous-typed microwave as a heating *** of palm stearin with methanol in the presence of 0.5 wt% NaOH catalyst was *** aims of the study are to determine optimal radiation time and optimal methanol to oil molar *** yield and purity were obtained to compare with the previous work without the *** experiments were carried out at 60 oC of reaction temperature,0.15 W/g of palm stearin and 600 rpm of mixing speed at various radiation times of 40,50,60,80,120 *** different methanol to oil molar ratios of 5:1,6:1 and 7:1 were investigated after obtaining optimal radiation *** results found that radiation time of 50 s and methanol to oil molar ratio of 7:1 were optimum for biodiesel production from palm *** yield and purity obtaining from these conditions were 97.5% and 98.33%,*** fuel properties of stearin biodiesel were determined according to biodiesel standards (ASTM D 6751 and EN 14214).

关键词： Biodiesel,Transesterification,Palm stearin,Microwave irradiation.

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Production and characterization of fuel briquettes from banana leaves waste

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Chemical engineering Transactions 2014年 37卷 439-444页

作者： De Oliveira Maia, Bianca G. Souza, Ozair Marangoni, Cintia Hotza, Dachamir De Oliveira, Antonio Pedro N. Sellin, Noeli Graduate Program in Materials Science and Engineering - PGMAT Federal University of Santa Catarina 88040 900 Florianópolis-SC Brazil Masters in Process Engineering University of Joinville Region - UNIVILLE 89219 710 Joinville-SC Brazil

The use of agricultural and agro-industrial waste as biomass fuel for power generation like briquettes can be an alternative solution to the problems related at their disposal. Briquettes produced from lignocellulosic waste, through a simple process and low cost are an excellent source of cheap energy and environmentally correct, in many cases, ideal for replacing fossil fuels in use today, with significant economic and environmental advantages. The banana cultivation generates a significant amount of waste, but little used, it would be important to add value to them. In this work banana semi-dried leaves were crushed to particles with sizes between 2 and 5 mm and its moisture content was determined. The briquettes were produced in a hydraulic press with compaction pressure of 18 MPa and two different compression times and were evaluated by proximate and ultimate chemical analysis, high heating value (HHV), thermogravimetric analysis (TGA), differential thermal analysis (DTA), linear shrinkage, mechanical compressive strength, bulk and energy density. Briquettes presented moisture content of 7.2 %, high contents of carbon (44.3 %) and volatile matter (75.3 %), low sulphur and nitrogen contents and HHV of 17.7 MJ/kg. These results are similar for other biomass used to produce briquettes. Under combustion in TGA and DTA analysis, the briquettes showed high loss mass and maximum energy release between 200 and 500 °C. The mechanical compressive strength for 1 second compression was 5.3 MPa and the briquettes density was 0.99 g/cm3. The thermal properties and physicochemical characteristics of the banana leaves briquettes demonstrate its potential for use as biomass fuel. Copyright © 2014,AIDIC Servizi S.r.l.

关键词： Compressive strength

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Biomass-Based Discrete Furan Oligomers as Materials for Electrochromic Devices

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ACS Sustainable Chemistry and engineering 2024年第1期12卷 459-469页

作者： Atayde, Eduardo C. Fong, Guan-Lun Yeh, Jyun-Yi Matsagar, Babasaheb M. Wang, Yu-Cheng Chen, De-Chian Peng, Chi-How Li, Yi-Pei Yamauchi, Yusuke Ho, Kuo-Chuan Wu, Kevin C.-W. Molecular Science and Technology Program Taiwan International Graduate Program (TIGP-MST) Academia Sinica No. 128 Sec. 2 Academia Road Taipei 11529 Taiwan Department of Chemistry National Tsing Hua University No. 101 Sec. 2 Kuang-Fu Road Hsinchu 30013 Taiwan Department of Chemical Engineering National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Sustainable Chemical Science and Technology Program Taiwan International Graduate Program (TIGP-SCST) Academia Sinica No. 128 Sec. 2 Academia Road Taipei 11529 Taiwan School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensl Brisbane 4072 QLD Australia Department of Materials Process Engineering Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan Institute of Polymer Science and Engineering National Taiwan University No.1 Sec. 4 Roosevelt Rd. Taipei 10617 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University No. 135 Yuandong Rd. Taoyuan 320 Taiwan

Electrochromic devices (ECDs) are materials that can undergo reversible changes in transmittance when exposed to different applied potentials. While many conjugated heterocyclic oligomers, such as oligothiophenes, have been developed for this purpose, there is no reported study on the use of discrete oligomeric furans as ECD materials. In this work, we introduce a furan trimer that can be utilized as a discrete electrochromic material, which transitions from light yellow to red and has a very high coloration efficiency of 1940 cm²/C at 507 nm. We propose that the reversible π-stack formation of the oligomer radical cations is behind this phenomenon, as evidenced by both experimental and computational results. The derivability of this oligomer from biomass and its facile synthesis make it an interesting alternative for other existing organic electrochromic materials. © 2023 American Chemical Society

关键词： electrochromism furan oligomer hydroxyalkylation−alkylation reaction solvatochromism π-stacks

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Performance-based fire safety engineering assessment of national museum of marine science and technology

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Procedia engineering 2018年 211卷 325-331页

作者： Ang-Cian Li Chi-Min Shu Yi-Ting Teng Tzu-Sheng Shen Pin-Ping Hsieh Doctor Program Graduate School of Engineering Science and Technology National Yunlin University of Science and Technology (YunTech) Yunlin 64002 Taiwan Center for Process Safety and Industrial Disaster Prevention School of Engineering YunTech Douliou Yunlin 64002 Taiwan Graduate School of Fire Science Central Police University Taoyuan 33304 Taiwan

The concept of ocean current and fishery industry is expressed from the architectural design in using crossed exterior corridors to perform ocean current. The contrast between modern and obsolete is represented by the staggered interior design and antiquated building structure of the heritage, which is used to be North Thermal Power Plant. It is therefore partial areas which cannot fulfill the article 79-2 of Building Design and Construction Regulation mandated by Taiwan government that stipulate the requirement of any void space over 3 floors. Requirement of smoke extraction system and smoke curtain is also exempted from article 188 of Standard for Installation of Fire Safety Equipment Based on Use and Occupancy. Performance-based design is adopted by fire engineering approach as an alternative. This project passed the expert panel review of fire engineering strategies and smoke management assessment. At the stage of construction by auditing and reviewing, full-scale hot smoke test was conducted due to the safety consideration raised by local government. The results of tests are significantly different from the simulation modelling and smoke management report approved by National Fire Agency, Ministry of Interior. Visibility in partial areas is around 10 m which is not regarded as a tenable condition. After the improvement of smoke management, the study of full-scale hot smoke tests and computational simulated results are carried out. Acceptance criteria, usually smoke temperature, smoke layer height and visibility in Taiwan, are reached regardless of differences between FDS model and on-site full-scale tested values. This project provided design considerations to designer during design process, including the environmental differences of internal and external building, local weather impact, and grid size used in FDS model. The limitation and discrepancy of chosen software among different versions should be understood so that simulation results would more fit the re

关键词： performance-based design FDS full-scale hot smoke test smoke management visibility

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Determination and analysis of critical damage criteria for predicting fracture in forming process by uniaxial tensile test

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Materials Today: Proceedings 2018年第3期5卷 9642-9650页

作者： Sermpong Niemsakul Nuttakorn Sae-Eawa Yingyot Aue-U-Lan Materials and Production Engineering program Department of Mechanical and Process Engineering The Sirindhorn International Thai-German Graduate school (TGGS) King Mongkut’s University of Technology North Bangkok Thailand 1518 Pracharat I Rd. Wongsawang Bangsue Bangkok 10800 Thailand

Blanking process is one of the core processes used to prepare a blank sheet before proceeding to the next forming steps. The quality of a cutting edge is considered to be a major parameter because it could be a cause of the premature fracture at the edge as well as limit the material formability. Finite Element Modeling (FEM) is normally used to as a tool to design the process and cutting tools. The accuracy of the FEM is highly dependent on input parameters, such as material properties, flow stress, friction coefficient, a sequence or speed cycle of the forming machine. One of the important parameters as the input parameters is a fracture limit of the material. Many researchers have been proposed and investigated with different models. Critical Damage Criteria (CDC) are among of many criteria in which are used to define this fracture limitation. However, the technique used to determine the Critical Damage Value (CDV) is still a controversial topic. In this research, the aim is to determine the suitable CDV for different CDCs by using uniaxial tensile test for predicting the fracture behavior of the tensile test. Different CDCs’, namely Normalized Cockcroft & Latham, Rice & Tracy and McClintock, would be evaluated and tested the accuracy for predicting the fracture on the tensile test specimen of material SPHC [JIS G3131] with thickness of 4 mm. The Normalized Cockcroft & Latham could give a good prediction in both load vs. stroke prediction and fracture behavior of the workpiece after the tensile test.

关键词： Critical damage criteria Forming process Uniaxial tensile test

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Recent advances in molecularly imprinted polymers toward biomedical healthcare devices

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Biosensors and Bioelectronics 2025年

作者： Youngjun Seo Yonghwan Kim Jaeheung Kim Hyo Gi Jung Jae Won Jang Hyunji Kim Kyo Seon Hwang Dongtak Lee Sang Won Lee Jeong Hoon Lee Dae Sung Yoon School of Biomedical Engineering Korea University Seoul 02841 Republic of Korea Interdisciplinary Program in Precision Public Health Korea University Seoul 02841 Republic of Korea Department of Clinical Pharmacology and Therapeutics College of Medicine Kyung Hee University Seoul 02447 Republic of Korea Department of Bioengineering & Nano-bioengineering Research Center for Bio Materials and Process Development Incheon National University Incheon 22012 Republic of Korea Division of Bioengineering Incheon National University Incheon 22012 Republic of Korea Terasaki Institute for Biomedical Innovation Los Angeles CA 90064 USA KU-KIST Graduate School of Converging Science and Technology Korea University Seoul 02841 Republic of Korea Department of Integrative Energy Engineering College of Engineering Korea University Seoul 02841 Republic of Korea Astrion Inc Seoul 02841 Republic of Korea

Following the increase in the global aging population, the importance of monitoring various disease-related biomarkers at an early stage has increased to ensure the health of the elderly. In an aging society, point-of-care (POC) systems are needed to care for elderly people who have physical and mental disorders. In light of the increasing prominence of POC systems, there is a growing effort to address the limitations associated with conventional receptors in wearable devices by substituting them with molecularly imprinted polymer (MIP). MIPs are well-known synthetic receptors engineered with specific binding cavities based on the "lock and key" principle. They could be synthesized in various configurations depending on specific types of monomers and templates. Compared to conventional receptors such as antibodies and aptamers, MIPs exhibit outstanding advantages, including good stability, cost-effectiveness, ease of synthesis, reusability, and broad applicability. These advantages have led to their extensive application in biomedical healthcare devices. This review summarizes a comparative analysis of sensors utilized for the detection of disease-specific biomarkers through diverse MIP applications and methodologies. Furthermore, we evaluated recent advancements in the miniaturization of MIPs and their integration with wearable biomedical devices for comprehensive healthcare monitoring applications. Finally, we delineated the existing limitations that need to be surmounted for the effective implementation of MIP-based biomedical devices and outlined future objectives for the enhancement of wearable and wireless biomedical healthcare monitoring devices.

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Synergistic sodium alginate- and biochar-immobilized cells for enhancing fermentative hydrogen production from food waste

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Environmental Science and Pollution Research 2024年第56期31卷 64524-64533页

作者： Ngamnurak, Phonsini Plangklang, Pensri Pomdaeng, Prakaidao Ko, Ting-Wu Reungsang, Alissara Chu, Chen-Yeon Graduate School Khon Kaen University Khon Kaen40002 Thailand Department of Biology Technology Faculty of Technology Khon Kaen University Khon Kaen40002 Thailand Research Group for Development of Microbial Hydrogen Production Process From Biomass Khon Kaen University Khon Kaen40002 Thailand Institute of Green Products Feng Chia University Taichung Taiwan Ph.D. Program of Mechanical and Aeronautical Engineering Feng Chia University Taichung Taiwan Master’s Program of Green Energy Science and Technology Feng Chia University Taichung Taiwan Academy of Science Royal Society of Thailand Bangkok10300 Thailand

An immobilized hydrogen-producing consortium investigated biohydrogen production from food waste using a combination of sodium alginate and cassava rhizome biochar. We investigated the effect of varying the biochar concentration from 0 to 3% and the size of immobilized cells from 1 to 7 mm. Immobilized cells were prepared using 50% (v/v) enriched hydrogen-producing consortium, 2% (w/v) sodium alginate, and 0 to 3% (w/v) cassava rhizome biochar. The optimal conditions for achieving the highest hydrogen production in the batch fermentation reactor were identified as a biochar concentration of 2% (w/v) and an immobilized cell size of 2 mm. The highest hydrogen yield, maximum hydrogen production rate, and lag time recorded were 0.69 mmol H2/g-COD, 0.02 mmol H2/g-COD.h, and 41.51 h, respectively. This research highlights the potential of cassava biochar technology for efficient biohydrogen production from food waste, contributing to renewable energy generation and sustainable waste management. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Anaerobic digestion

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Measurement and correlation of supercritical CO_(2) and ionic liquid systems for design of advanced unit operations

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Frontiers of Chemical Science and engineering 2009年第1期3卷 12-19页

作者： Hiroshi MACHIDA Ryosuke TAGUCHI Yoshiyuki SATO Louw J.FLORUSSE Cor J.PETERS Richard L.SMITH Department of Chemical Engineering Research Center of Supercritical Fluid TechnologyTohoku UniversitySendaiJapan Graduate School of Environmental Studies Tohoku UniversitySendaiJapan Laboratory of Applied Thermodynamics and Phase Equilibria Faculty of Applied SciencesDelft University of TechnologyJulianalaan 1362628 BL DelftThe Netherlands Laboratory of Process Equipment Department of Process and EnergyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyLeeghwaterstraat 442628 CA DelftThe Netherlands Petroleum Institute Chemical Engineering ProgramBu Hasa BuildingRoom 2203P.O.Box 2533Abu DhabiUnited Arab Emirates

Ionic liquids combined with supercriticalﬂuid technology hold great promise as working solvents for developing compact *** liquids,which are organic molten salts,typically have extremely low volatility and high functionality,but possess high viscos-ities,surface tensions and low diffusion coefﬁcients,which can limit their ***_(2),on the other hand,especially in its supercritical state,is a green solvent that can be used advantageously when combined with the ionic liquid to provide viscosity and surface tension reduction and to promote mass *** solubility of CO_(2) in the ionic liquid is key to estimating the important physical properties that include partition coefﬁcients,viscosities,densities,interfacial tensions,thermal conductivities and heat capacities needed in contactor *** this work,we examine a subset of available high pressure pure component ionic liquid PVT data and high pressure CO_(2)-ionic liquid solubility data and report new correlations for CO_(2)-ionic liquid systems with equations of state that have some industrial applications including:(1)general,(2)fuel desulfurization,(3)CO_(2) capture,and(4)chiral *** measurements of solubility data for the CO_(2) and 1-butyl-3-methylimidazolium octyl sulfate,[bmim][OcSO4]system are reported and *** the correlation of the CO_(2) ionic liquid phase behavior,the Peng-Robinson and the Sanchez-Lacombe equations of state were considered and are *** is shown that excellent correlation of CO_(2) solubility can be obtained with either equation and they share some common characteristics regarding inter-action *** the Sanchez-Lacombe equation,parameters that are derived from the supercritical region were found to be important for obtaining good correlation of the CO_(2)-ionic liquid solubility data.

关键词： compact processes chiral ionic liquids separations thermodynamic properties equations of state

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