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First International Symposium on Instrumentation, Control, Artificial Intelligence, and Robotics (ICA-SYMP)

作者： Kawintida Santavanond Charusluk Viphavakit Wisarn Patchoo Hala El-Khozondar Waleed Mohammed Faculty of Engineering International School of Engineering Chulalongkorn University Bangkok Thailand Faculty of Engineering International School of Engineering Intelligent Control Automation of Process Systems Research Unit Chulalongkorn University Bangkok Thailand The Bangkok University Center of Research in Optoelectronics Communications and Computational Systems School of Engineering Bangkok University Pathumthani Thailand Islamic University of Gaza Gaza Palestine The Bangkok University Center of Research in Optoelectronics Communications and Computational Systems School of Engineering Bangkok University Pathumthani Thailand

ISBN: (数字)9781728187600

ISBN: (纸本)9781728187617

This study aims to apply Localized Surface Plasmon Resonance (LSPR), Maxwell Garnett's formula, and Fabry-Perot theory together to design and develop a LSPR enhanced gold colloidal nanoparticles (AuNPs) sensor to be used in biomedical applications such as detection of glucose level in urine for early stage screening of diabetic patients. In this work, the LSPR based sensor has been designed and studied numerically to detect the glucose level from the change in the effective index resulting in a red shift of the absorption peak. The sensors were designed to have various sizes of the gold nanoparticles in a range between 20 nm and 100 nm by having different molar ratio with Trisodium Citrate (TSC) which acts as stabilizer in the synthesis. The maximum possible sensitivity of the sensor can be achieved with 70 nm diameter of gold nanoparticles at 0.2 volume fraction of AuNP to glucose solution.

关键词： Nanoparticles Gold Sensitivity Robot sensing systems Glucose Optical sensors Surface plasmons

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Corrigendum to “Quantification, phytochemical evaluation, and identification of pomegranate yellow peel constituents using LC-MS/MS, the effect of the solvent extract on the antioxidant, in vitro anti-inflammatory, and antibacterial activities” [Ind. Crops Prod. 219 (2024) 118780]

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Industrial Crops and Products 2024年 222卷

作者： Amina Boukezzoula Djalila Boudemagh Nadezhda Palko Maria Grishina Chawki Bensouici Mahmoud Bounekhel Ehab AlShamaileh Saliha Dahamna Laboratory of Multiphase Polymeric Materials (LPMAMPM) Faculty of Technology Ferhat Abbas University Setif1 Setif 19000 Algeria Emerging Materials Research Unit Department of Process Engineering Faculty of TechnologyFerhat Abbas University Setif1 Setif 19000 Algeria Laboratory of Computational Modelling Drugs South Ural State University Chelyabinsk 454 080 Russia Laboratory of Biochemistry Biotechnology and Health Division Center for Research in Biotechnology (CRBT) Constantine 25000 Algeria Department of Chemistry School of Science The University of Jordan Amman 11942 Jordan Laboratory of Phytotherapy Applied to Chronic Diseases. Faculty of Nature and Life Sciences University Setif 1 19000 Algeria

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Modelling and simulation of zinc-air flow battery with zinc regeneration process

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Chemical engineering Transactions 2018年 70卷 391-396页

作者： Lao-Atiman, Woranunt Kheawhom, Soorathep Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok10330 Thailand Research Unit of Computational Process Engineering Chulalongkorn University Bangkok10330 Thailand

Reliable and low-cost electrical energy storage systems are required for grid integration of various intermittent sources of renewable energy. Zinc-air flow batteries have shown high potential for electricity storage application because of their high energy density at low cost. The flow batteries can reduce significantly the problem associated with the formation of dendritic zinc during recharge and the formation of a passivation film during discharge. The aims of this work include the development of mathematical models of a zinc-air flow battery (ZAFB). The developed model was implemented in MATLAB and validated with experimental data. The models were then used to investigate the behavior of the flow battery. The concentration of potassium hydroxide in the electrolyte, as well as the feed flow rate considerably affected the performance of ZAFB. Copyright © 2018, AIDIC Servizi S.r.l.

关键词： Flow batteries

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Emergent stability in complex network dynamics

arXiv

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arXiv 2020年

作者： Meena, Chandrakala Hens, Chittaranjan Acharyya, Suman Haber, Simcha Boccaletti, Stefano Barzel, Baruch Department of Mathematics Bar-Ilan University Ramat-Gan Israel Gonda Multidisciplinary Brain Research Center Bar-Ilan University Ramat-Gan Israel Chemical Engineering and Process Development CSIR-National Chemical Laboratory Pune India Indian Institute of Science Education and Research Maruthamala P. O Vithura Kerala Thiruvananthapuram695551 India Physics and Applied Mathematics Unit Indian Statistical Institute Kolkata India Center for Computational Natural Sciences and Bioinformatics International Institute of Information Technology Gachibowli Telangana Hyderabad500032 India Cnr Institute of Complex Systems Florence Italy Moscow Russia Universidad Rey Juan Carlos calle Tulipán s/n Madrid Móstoles28933 Spain Network Science Institute Northeastern University BostonMA United States

The stable functionality of networked systems is a hallmark of their natural ability to coordinate between their multiple interacting components. Yet, real world networks often appear random and highly irregular, raising the question of what are the naturally emerging organizing principles of complex system stability. The answer is encoded within the system's stability matrix - the Jacobian - but is hard to retrieve, due to the scale and diversity of the relevant systems, their broad parameter space, and their nonlinear interaction dynamics. Here, we introduce the dynamic Jacobian ensemble, which allows us to systematically investigate the fixed-point dynamics of a range of relevant network-based models. Within this ensemble, we find that complex systems exhibit discrete stability classes. These range from asymptotically unstable, where stability is unattainable, to sensitive, in which stability abides within a bounded range of the system's parameters. Alongside these two classes, we uncover a third asymptotically stable class, in which a sufficiently large and heterogeneous network acquires a guaranteed stability, independent of its microscopic parameters and of external perturbation. Hence, in this ensemble, two of the most ubiquitous characteristics of real-world networks - scale and heterogeneity - emerge as natural organizing principles to ensure fixed-point stability in the face of changing environmental conditions. © 2020, CC BY.

关键词： System stability

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Investigation of integrated biomass pyrolysis and gasification process for green fuel production

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Energy Procedia 2017年 142卷 204-209页

作者： Karittha Im-orb Thanaphorn Detchusananard Pimporn Ponpesh Amornchai Arpornwichanop Computational Process Engineering Research Unit Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok 10330 Thailand

The energy production from biomass has been received closer attention due to an increased concern in greenhouse gas emissions from fossil fuel combustion unit. Gasification is a promising technology used to convert biomass to a synthesis gas. Although the gasification process provides a high amount of synthesis gas, it also consumes high energy, especially in an air separation unit (ASU), which is the largest energy consumer in the process. A design of new biomass conversion process offering lower energy consumption is an interesting topic and focused in this study. The integrated biomass pyrolysis and gasification (IBPG) process, for the co-production of synthesis gas and bio-oil, is investigated using the IBPG model developed in Aspen custom modeler. Rice straw is a considered biomass feedstock. The effects of changes in pyrolysis temperature on the IBPG performance, i.e., product distribution and energy consumption, are investigated. The amount of oxygen required to achieve 98% of char conversion at gasifier is found to decrease as the pyrolysis temperature increases, resulting in the decrease of energy required at ASU. The production rate of synthesis gas and bio-oil derived from IBPG process increase as pyrolysis temperature increases due to the increased volatiles. Comparing with the conventional biomass gasification, although the IBPG process offers lower syngas production rate, it provides additional bio-oil as a valued product. Additionally, the lower amount of waste heat released from IBPG process is found. The IBPG process with high pyrolysis temperature offers a high amount of synthesis gas and bio-oil and releases the low amount of waste heat.

关键词： Gasification Pyrolysis Rice straw process analysis Synthesis gas Bio-oil

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Design and evaluation of the sorption enhanced steam reforming and solid oxide fuel cell integrated system with anode exhaust gas recirculation for combined heat and power generation

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Chemical engineering Transactions 2017年 57卷 97-102页

作者： Wiranarongkorn, Kunlanan Im-Orb, Karittha Ponpesh, Pimporn Patcharavorachot, Yaneeporn Arpornwichanop, Amornchai Computational Process Engineering Research Unit Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok10330 Thailand Department of Chemical Engineering Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang Bangkok10520 Thailand

ISBN: (纸本)9788895608488

Solid oxide fuel cell (SOFC) is an electrochemical device for power generation with high efficiency and low environmental impact. Due to a high-temperature operation of SOFC, useful heat can be recovered to enhance its system efficiency. Regarding the environmental concern, bio-oil, the renewable liquid fuel, can be applied to SOFC system. In this study, the SOFC integrated with a steam reforming of bio-oil is considered. A sorption enhanced reforming process is studied for the production of high purity hydrogen for SOFC, and the anode gas recirculation in the SOFC system is proposed for the system improvement. Modeling of such an integrated process is performed using Aspen Plus simulator. As heat and power are generated from the SOFC system, the effect of key design parameters;fuel utilization and recirculation ratio of the anode gas, on a heatto-power ratio is analyzed. The system performance regarding to the electrical and thermal efficiencies is also evaluated. The results show that increasing the anode recirculation ratio increases the combined heat and power (CHP) performance, but increasing the fuel utilization decreases the thermal efficiency. It is also found that the appropriate range of heat-to-power ratio of the system varies from 0.24 to 0.89. © Copyright 2017, AIDIC Servizi S.r.l.

关键词： Anodes

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Economic Evaluation of Biodiesel Production from Palm Fatty Acid Distillate Using a Reactive Distillation

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Energy Procedia 2017年 105卷 237-243页

作者： Lida Simasatitkul Amornchai Arpornwichanop Department of Industrial Chemistry Faculty of Applied Science King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand Computational Process Engineering Research Unit Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok 10330 Thailand

Economic evaluation of a reactive distillation for biodiesel production is performed. Palm fatty acid distillate (PFAD) consisting of a mixtures of triglycerides, moisture and free fatty acids is considered a feedstock. A simulation model of the biodiesel production process based on a reactive distillation is developed using Aspen Plus. Effect of key operating parameters, such as the number of reactive stages and liquid holdup, is investigated. The economic analysis considers total investment costs, operating costs and economic indicators, such as return on investment (ROI) and net present value (NPV). Performance of the reactive distillation processes is compared with a conventional process using two continuous reactors. The simulation results show that a single step acid – catalyzed process can be carried out in a reactive distillation for higher biodiesel productivity and purity. Although the conventional process has lower total production cost, the reactive distillation process is more economical process providing a higher ROI and NPV. The biodiesel production using a reactive distillation without recycling upstream is the most preferred configuration. Furthermore, the reactive distillation process can save the energy requirement of 51.2% compared with the conventional process.

关键词： Economic evaluation Palm fatty acid distillation Biodiesel production reactive distillation

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Modeling and analysis of sorption enhanced chemical looping biomass gasification

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Chemical engineering Transactions 2017年 57卷 103-108页

作者： Detchusananard, Thanaphorn Ponpesh, Pimporn Saebea, Dang Authayanun, Suthida Arpornwichanop, Amornchai Computational Process Engineering Research Unit Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok10330 Thailand Department of Chemical Engineering Faculty of Engineering Burapha University Chonburi20131 Thailand Department of Chemical Engineering Faculty of Engineering Srinakharinwirot University Nakorn Nayok26120 Thailand

ISBN: (纸本)9788895608488

Steam biomass gasification has been considered the most favorable option for production of syngas. Nevertheless, the steam biomass gasification is inevitably problematic with undesirable CO2 and tar formed during the process. Calcium oxide (CaO), when added to the gasification, could play the dual role of tar cracking catalyst and CO2 sorbent, and thereby producing more hydrogen. The CO2 capture process is the carbonation reaction of CO2 and CaO to produce CaCO3. In general, CaCO3 can be regenerated at high temperatures and then reused within the cyclic process. Nonetheless, a major disadvantage of the steam biomass gasification with in situ CO2 capture process is due to high external heat requirement in a regenerator. In this study, the sorption enhanced chemical looping biomass gasification, which is operated without heating and cooling system, for high-purity hydrogen production is investigated. Model of the gasification is developed using ASPEN Plus process simulator and used to analyze its energy efficiency performance. The results show that the maximum energy efficiency performance is 57.67% at the operating conditions of steam to carbon ratio = 2.6, temperature = 636 °C, CaO to carbon ratio = 1 and nickel oxide to carbon ratio = 1.06. © Copyright 2017, AIDIC Servizi S.r.l.

关键词： Carbon dioxide

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Maximizing the efficiency of a heat recovery steam generator for solid oxide fuel cell-based trigeneration systems

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Chemical engineering Transactions 2016年 52卷 1051-1056页

作者： Tippawan, Phanicha Arpornwichanop, Amornchai Computational Process Engineering Research Unit Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok10330 Thailand

ISBN: (纸本)9788895608426

In this study, a complete strategy for the optimum design of a heat recovery steam generator (HRSG) is outlined. The performance of the heat recovery steam generator is examined by modelling a trigeneration system based on an ethanol-fuelled solid oxide fuel cell in Aspen Plus. To maximize the HRSG efficiency, the performance of the HRSG at different steam product specifications is investigated in terms of the exergy efficiency and exergy destruction. The result shows that to minimize exergy destruction in the HRSG, the temperature difference across the HRSG should be maintained at a minimum and superheated condition should be avoided. Heat recovery steam generator with double pressure levels shows the maximum efficiency when utilizing 10 - 30 % of recovered heat for cooling application and employing the remaining heat for heating devices at nearly saturated condition. Copyright © 2016, AIDIC Servizi S.r.l.

关键词： Steam

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Performance analysis of solid-oxide electrolysis cells for syngas production by H2O/CO2 co-electrolysis

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Chemical engineering Transactions 2017年 57卷 1627-1632页

作者： Saebea, Dang Authayanun, Suthida Patcharavorachot, Yaneeporn Soisuwan, Soipatta Assabumrungrat, Suttichai Arpornwichanop, Amornchai Department of Chemical Engineering Faculty of Engineering Burapha University Chonburi20131 Thailand Department of Chemical Engineering Faculty of Engineering Srinakharinwirot University Nakorn Nayok26120 Thailand School of Chemical Engineering Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang Bangkok10520 Thailand Center of Excellence on Catalysis and Catalytic Reaction Engineering Department of Cehmical Engineering Chulalongkorn Univeristy Bangkok10330 Thailand Computational Process Engineering Research Unit Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok10330 Thailand

ISBN: (纸本)9788895608488

High-temperature solid oxide electrolysis cells (SOECs) are promising technologies to store excess renewable energy generation. In this work, the mathematical model of SOEC, which can describe the behaviour of a cathode-supported SOEC operating for H2O and CO2 co-electrolysis, is developed from mass balance, dusty gas model, and electrochemical model. The validated SOEC model is used to analyse the influence of the reversible water-gas shift reaction taking place on the cathode on the performance of the SOEC for syngas production. The simulation results show that the reverse water-gas shift reaction is highly pronounced at the cathode surface due to high CO2 component and can contribute to CO production. The rate of water-gas shift reaction increases along the depth of the cathode to the three-phase boundary. At the three-phase boundary, an increase in operating temperatures results in the enhancement of the rate of water-gas shift reaction. Additionally, regarding the SOEC performance, the electrical energy consumed for co-electrolysis in SOEC decreases with increasing temperature because the activation overpotentials and ohmic overpotentials are lower. © Copyright 2017, AIDIC Servizi S.r.l.

关键词： Water gas shift

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