Arabian Journal for Science and Engineering最新文献

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High-Purity Silica Produced from Sand Using a Novel Method Combining Acid Leaching and Thermal Processing 利用酸浸和热处理相结合的新方法从沙子中生产高纯度二氧化硅
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-09-18 DOI: 10.1007/s13369-024-09545-x
Marouan Khalifa, Mariem Touil, Khadija Hammadi, Ikbel Haddadi, Atef Attyaoui, Nassima Meftah, Faouzi Mannai, Selma Aouida, Hatem Ezzaouia
{"title":"High-Purity Silica Produced from Sand Using a Novel Method Combining Acid Leaching and Thermal Processing","authors":"Marouan Khalifa,&nbsp;Mariem Touil,&nbsp;Khadija Hammadi,&nbsp;Ikbel Haddadi,&nbsp;Atef Attyaoui,&nbsp;Nassima Meftah,&nbsp;Faouzi Mannai,&nbsp;Selma Aouida,&nbsp;Hatem Ezzaouia","doi":"10.1007/s13369-024-09545-x","DOIUrl":"10.1007/s13369-024-09545-x","url":null,"abstract":"<div><p>The production of high-purity silica from natural sand is crucial as it is a primary material in the high-grade silicon industry. This paper presents a new processing method for purifying sand silica. This process is a subsequent combination of annealing thermal and acid etching. First, samples of Algerian Sahara sand were subjected to rapid thermal annealing in an infrared furnace at 900 °C for 1 h. Subsequently, the samples were etched using an aqueous solution containing hydrofluoric and hydrochloric acid. This last acid etching step is designed to eliminate any gettered impurities that may have been migrated during the annealing process. Various characterization techniques were employed to evaluate the effectiveness of this impurity removal process, such as X-ray fluorescence (XRF) analysis and scanning electron microscopy (SEM) with energy-dispersive X-ray (EDX) spectroscopy. The results show a substantial reduction in all metallic impurities in silica after two successive purification cycles, improving the purity from 94.63 to 99.87% and the removal efficiencies for critical eleven contaminants such as Fe (93.92%), Al (98.41%), and Ca (&gt; 99.99%).</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 6","pages":"4129 - 4135"},"PeriodicalIF":2.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Model-Free Variable Impedance Control for Upper Limb Rehabilitation Robot 上肢康复机器人的无模型可变阻抗控制
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-09-17 DOI: 10.1007/s13369-024-09568-4
Mawloud Aichaoui, Ameur Ikhlef
{"title":"Model-Free Variable Impedance Control for Upper Limb Rehabilitation Robot","authors":"Mawloud Aichaoui,&nbsp;Ameur Ikhlef","doi":"10.1007/s13369-024-09568-4","DOIUrl":"10.1007/s13369-024-09568-4","url":null,"abstract":"<div><p>This paper presents an innovative approach to control upper-limb rehabilitation robots for both passive and active-assistive rehabilitation therapy. In contrast to conventional model-based impedance control strategies, which may compromise controller stability and robustness due to model uncertainties, unmodeled dynamics, and external disturbances, our proposed model-free impedance control (MFIC) strategy eliminates the requirement for prior knowledge about the controlled system dynamics. MFIC is achieved by incorporating model-free control into conventional impedance control, employing time delay estimation (TDE) to estimate unknown dynamics. Numerical simulations confirm that MFIC outperforms traditional impedance control in terms of tracking performance and robustness. Furthermore, model-free variable impedance control (MFVIC) is introduced by enhancing MFIC with online impedance parameters adaptation using fuzzy logic control. The desired impedance model adapts according to motion and contact torque measurements. MFVIC employs two fuzzy systems to adjust the desired impedance model for two stages of rehabilitation: passive and active-assistive rehabilitation training. Our controller is designed for <i>n</i> degrees-of-freedom (DOF) robots and has been tested on a two-DOF robot model for simplicity.\u0000</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 8","pages":"5745 - 5761"},"PeriodicalIF":2.6,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental Mixture Design for Optimization of CeO2/TiO2/Biochar Composite Catalyst for Enhanced Brewery Wastewater Treatment Using an Integrated Adsorption–Photocatalytic Process 利用吸附-光催化一体化工艺优化 CeO2/TiO2/Biochar 复合催化剂用于强化啤酒废水处理的实验混合物设计
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-09-16 DOI: 10.1007/s13369-024-09554-w
Thamaraiselvan Arumugam, Balaji Dhandapani
{"title":"Experimental Mixture Design for Optimization of CeO2/TiO2/Biochar Composite Catalyst for Enhanced Brewery Wastewater Treatment Using an Integrated Adsorption–Photocatalytic Process","authors":"Thamaraiselvan Arumugam,&nbsp;Balaji Dhandapani","doi":"10.1007/s13369-024-09554-w","DOIUrl":"10.1007/s13369-024-09554-w","url":null,"abstract":"<div><p>The brewing industry plays a crucial place in the global economy during manufacturing enormous amounts of wastewater generated containing excessive organic pollutants. The release of untreated brewery wastewater into water bodies causes severe consequences for the environment and human health. The primary objective of this work is to treat brewery wastewater effectively by synthesizing a novel composite material consisting of biochar, cerium oxide and titanium oxide. Biochar was synthesized from malt bagasse by pyrolysis at 360 °C for 1 h using nitrogen gas. Biochar, cerium oxide and titanium oxide were mixed with 10 M nitric acid solution maintained at 140 °C for 4 h, and the resultant mixture was cooled, filtered and dried. The D-optimal experimental design was used to identify the optimum composition of the composite. The impact of component fractions on individual factors was analysed using statistical analysis, and the empirical model was developed. At optimum condition (13.32% by weight of cerium oxide, 13.33% by weight of titanium oxide and 73.33% by weight of biochar) by the process of adsorption and photocatalysis, 66.38 ± 1.88% of chemical oxygen demand and 53.58 ± 1.45% of total dissolved solid were removed after 320 min. The desirability scores for chemical oxygen demand removal (%) and total dissolved solids removal (%) were found to be 0.9654 and 0.9488, respectively, indicating its effectiveness. Further, the kinetic investigation was performed using the Langmuir–Hinshelwood model. Thus, the optimized cerium oxide/titanium oxide/biochar composite is an efficient photocatalyst for brewery wastewater treatment.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 6","pages":"4095 - 4114"},"PeriodicalIF":2.6,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Derivation Analysis and Control of Multiport Flyback Converter with Lyapunov Function-Based Controller in Renewable Energy Systems Considering Circuit Parasitics 考虑到电路寄生的可再生能源系统中基于 Lyapunov 函数控制器的多端口反激式转换器的推导分析与控制
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-09-16 DOI: 10.1007/s13369-024-09493-6
Shabana Urooj, Dheeraj Joshi, Ashutosh Gupta, Amal BaQais
{"title":"Derivation Analysis and Control of Multiport Flyback Converter with Lyapunov Function-Based Controller in Renewable Energy Systems Considering Circuit Parasitics","authors":"Shabana Urooj,&nbsp;Dheeraj Joshi,&nbsp;Ashutosh Gupta,&nbsp;Amal BaQais","doi":"10.1007/s13369-024-09493-6","DOIUrl":"10.1007/s13369-024-09493-6","url":null,"abstract":"<div><p>This paper addresses the analytical modeling of multiport flyback converters, which are governed by linear differential–algebraic equations. The modeling of these converters poses a challenge due to the switching between multiple such equations that govern the circuit’s behavior. The study emphasizes the importance of robust control strategies for addressing the non-idealities in flyback converters. Using MATLAB/Simulink, a dynamic model of the converter is developed. A comparison is made between a Lyapunov function-based controller, a linear proportional integrator controller, and an integral sliding mode controller. The controller consists of two main parts: a duty-ratio feedforward control unit for steady-state parameters and a Lyapunov function-based feedback control unit to handle disturbances. The feedforward control signal helps reduce the workload on the Lyapunov feedback controller. This control system ensures global exponential stability of the closed-loop system, enabling a swift transient response even under line and load disturbances. Mathematical simulations demonstrate its superior performance and stability, while experimental validations are conducted considering equivalent series resistances of each component. The proposed model and control scheme are further validated through a hardware prototype tested under various load and line disturbances. This research highlights the necessity of stress testing and performance evaluation for ensuring smooth and efficient operation of controlled multiport flyback converters across diverse conditions.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 8","pages":"5711 - 5725"},"PeriodicalIF":2.6,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence Laws of Dust Deposition on the Power Generation Performance of Bifacial Solar PV Modules 灰尘沉积对双面太阳能光伏组件发电性能的影响规律
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-09-16 DOI: 10.1007/s13369-024-09555-9
Zhengming Yi, Qi Tao, Xueqing Liu, Linqiang Cui, Yumeng Zou, Jianlan Li, Luyi Lu
{"title":"Influence Laws of Dust Deposition on the Power Generation Performance of Bifacial Solar PV Modules","authors":"Zhengming Yi,&nbsp;Qi Tao,&nbsp;Xueqing Liu,&nbsp;Linqiang Cui,&nbsp;Yumeng Zou,&nbsp;Jianlan Li,&nbsp;Luyi Lu","doi":"10.1007/s13369-024-09555-9","DOIUrl":"10.1007/s13369-024-09555-9","url":null,"abstract":"<div><p>Bifacial solar PV power generation is one of the most promising and popular power generation technologies for overcoming environmental pollution and energy shortages. The phenomenon of dust deposition on bifacial PV modules greatly weakens the power generation performance and threatens safe operation. In this work, the dust deposition laws of bifacial PV modules are studied using the DEM. Besides, the influence of dust deposition and installation conditions on the power generation gain of bifacial PV modules is investigated. The results indicate that the dust concentration on windward surfaces is greater than that on leeward sides during nonfree deposition but smaller than that on upper surfaces during free deposition. The particle morphological distribution and motion behaviour differ among the left, right and top inlets under the coupled effects of deposition and separation forces. The power generation gain increases when the inclination angle, PV installation height and ground reflectivity increase. The power generation gain under overcast weather conditions is the greatest among the three kinds of typical weather conditions. When the dust deposition density varies from 0 to 0.95 g/m<sup>2</sup>, the power generation gain greatly decreases by 41–65%. The research findings can be of great theoretical guidance and commercial value for cleaning technologies of bifacial PV modules.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 6","pages":"4115 - 4128"},"PeriodicalIF":2.6,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design of a High Order Dual Band MIMO Antenna with Improved Isolation and Gain for Wireless Communications 为无线通信设计具有改进隔离度和增益的高阶双频多输入多输出天线
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-09-16 DOI: 10.1007/s13369-024-09582-6
Sanjukta Nej, Santosh Kumar Bairappaka, Dinavahi BNVSai Durga Sri Raja Ram, Sukhendu Jana, Anumoy Ghosh
{"title":"Design of a High Order Dual Band MIMO Antenna with Improved Isolation and Gain for Wireless Communications","authors":"Sanjukta Nej,&nbsp;Santosh Kumar Bairappaka,&nbsp;Dinavahi BNVSai Durga Sri Raja Ram,&nbsp;Sukhendu Jana,&nbsp;Anumoy Ghosh","doi":"10.1007/s13369-024-09582-6","DOIUrl":"10.1007/s13369-024-09582-6","url":null,"abstract":"<div><p>An 8-elements dual band multiple-input multiple-output (MIMO) antenna is proposed in this article. The single element antenna consists of a defected ground structure (DGS) to obtain the first resonance at 2.4 GHz (Wi-Fi) and inset fed patch is responsible for second resonance at 3.6 GHz (Wi-MAX). As the single antenna is extended for 8-elements MIMO arrangement in a compact layout, the |S11| deteriorates which improved by engraving additional I-shaped DGS slots that enhances the impedance matching at the antenna ports. Due to closely placed antenna elements the mutual coupling at the resonant bands is poor. Hence, T- shaped stubs are introduced to achieve reduced mutual coupling between the antennas which effectively improves isolation characteristics of individual antenna elements beyond − 20 dB. A dual band Artificial Magnetic Conductor (AMC) is designed and placed below the MIMO antenna at a certain distance to enhance the gain at both the bands without perturbing the scattering parameters. The gain is improved from − 2.7 to 3.5 dB at the first resonance and from 1.7 to 3.85 dB at the second resonance. The diversity performances of MIMO are calculated in terms of Envelop Correlation Coefficient, Diversity Gain, Mean Effective Gain, Channel Capacity Loss, Total Active Reflection Coefficient, and Multiplexing Efficiency which confirm that the proposed MIMO antenna is a very potential candidate for multifunctional high speed wireless communication systems. The composite MIMO antenna with AMC is fabricated, and the antenna characteristics are measured which comply with the simulated results.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 8","pages":"5727 - 5744"},"PeriodicalIF":2.6,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Magnet Design of an Advanced High-Field Superconducting Cyclotron for Medical Isotope Production 用于医用同位素生产的先进高场超导回旋加速器的磁体设计
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-09-15 DOI: 10.1007/s13369-024-09566-6
A. O. Alrashdi, M. A. Alkadi, S. M. Alshammari, K. S. Alharbi, K. N. Alharbi, A. S. Aldawood, S. A. Altuijri, K. A. Alkhulayfi
{"title":"A Magnet Design of an Advanced High-Field Superconducting Cyclotron for Medical Isotope Production","authors":"A. O. Alrashdi,&nbsp;M. A. Alkadi,&nbsp;S. M. Alshammari,&nbsp;K. S. Alharbi,&nbsp;K. N. Alharbi,&nbsp;A. S. Aldawood,&nbsp;S. A. Altuijri,&nbsp;K. A. Alkhulayfi","doi":"10.1007/s13369-024-09566-6","DOIUrl":"10.1007/s13369-024-09566-6","url":null,"abstract":"<div><p>Radioisotopes are one of the essential cornerstones of modern medicine. They serve both diagnostic and therapeutic purposes. These radioisotopes are mainly produced using charged particle accelerators such as cyclotrons. In this paper, we present a description of a compact high-field superconducting magnet as it is considered the most important part of the cyclotron accelerator because it is approximately 60% of the overall TAAC30 cyclotron design. This 30 MeV cyclotron uses the magnet to boost a magnetic field two times higher than the recently developed conventional H-cyclotrons. This magnet will also be a modern, state-of-the-art design not only because of the higher magnetic field, but also smaller size, lower maintenance, lighter weight, and lower power consumption in comparison with any other magnet available. This design also allows both low construction requirements with operation costs for the production of PET isotopes, which require an internal water target. The acceleration frequency is 200 MHz, and an operating power level of 2–3 kW is foreseen for the acceleration, powered by a compact water-cooled solid-state RF amplifier. The cyclotron, as well as the beam, operates as a fully continuous wave with a 100% duty cycle. This design aims to provide a sustainable supply of the critical imaging isotopes F-18 and N13, eliminating the need of supplying from other production facilities for small centers. Additionally, this paper presents simulation results of this magnet using multiple analysis models, which are sufficient and present high capability in accelerator field.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 5","pages":"3479 - 3490"},"PeriodicalIF":2.6,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prospects of Nuclear Power in a Sustainable Energy Transition 核能在可持续能源转型中的前景
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-09-15 DOI: 10.1007/s13369-024-09557-7
Muhammad Asif, Barry Solomon, Charles Adulugba
{"title":"Prospects of Nuclear Power in a Sustainable Energy Transition","authors":"Muhammad Asif,&nbsp;Barry Solomon,&nbsp;Charles Adulugba","doi":"10.1007/s13369-024-09557-7","DOIUrl":"10.1007/s13369-024-09557-7","url":null,"abstract":"<div><p>The availability of refined and efficient energy resources has played a decisive role in the advancement of societies, especially since the Industrial Revolution of the mid eighteenth to nineteenth centuries. In the twentieth century, the international energy scenario is experiencing a profound transition in terms of energy resources and their utilization. The energy transition is in response to the challenges the global energy landscape faces such as rapidly growing demand, depleting fossil fuel reserves, surging energy prices, risks associated with the security of supplies, and above all climate change. Nuclear power is an important form of energy making a significant contribution to the electricity mix around the world, especially in developed countries. One of the major advantages of nuclear power is its minimal greenhouse gas emissions as compared to fossil fuels. The paper examines the prospects of nuclear power in the energy transition considering both the trend of phase-out that the technology has experienced primarily in several European countries since the 1980s, as well as the growing interest it has received more recently as a low carbon energy solution toward addressing climate change. It also examines the significance of nuclear power toward energy transition with the help of multi-criteria decision analysis (MCDA) based on expert opinion from developed as well as developing countries.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 5","pages":"3467 - 3477"},"PeriodicalIF":2.6,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison Between Analytical and Numerical Solutions for Water Transport in the Membrane on a PEMFC Model PEMFC 模型膜中水传输的分析和数值解决方案比较
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-09-15 DOI: 10.1007/s13369-024-09499-0
Leonardo Fortuna Carneiro, Esly Ferreira da Costa Junior, Samuel Tadeu de Paula Andrade, Tulio Matencio, Rudolf Huebner, Rosana Zacarias Domingues
{"title":"Comparison Between Analytical and Numerical Solutions for Water Transport in the Membrane on a PEMFC Model","authors":"Leonardo Fortuna Carneiro,&nbsp;Esly Ferreira da Costa Junior,&nbsp;Samuel Tadeu de Paula Andrade,&nbsp;Tulio Matencio,&nbsp;Rudolf Huebner,&nbsp;Rosana Zacarias Domingues","doi":"10.1007/s13369-024-09499-0","DOIUrl":"10.1007/s13369-024-09499-0","url":null,"abstract":"<div><p>Based on the necessity of better understanding the trade-off between the accuracy and computational efficiency of fuel cell models, this work aims to evaluate the impact of a simplifying assumption that permits the analytical description of water transport in the electrolyte. This simplification is the usage of a mean value for the water diffusivity, which is a function of the membrane’s water content. For this test, analytical expressions for the transport are developed for two different electro-osmotic drag models, Springer’s linear description and a piecewise-linear proposal. Those expressions are implemented on a PEMFC model along with the non-simplified description, which is solved numerically. Both submodels have good accuracies on the polarization curve while the water concentration does not reach the region of the peak in diffusivity (<span>(lambda cong 4)</span>), indicating that the underestimation of the back-diffusion caused by the mean can hinder the accuracy. As for computational time, improvements of 49.85 and 23.69% are, respectively, obtained for Springer’s and the piecewise-linear electro-osmotic drag models for a larger interval between the solved current densities. However, the analytical expressions cause a performance loss of 6.80% when a smaller interval is used for the piecewise description. Therefore, the assumption of a mean diffusivity can be beneficial for models if the cell operates under well-humidified conditions and with fewer points in the domain, but it loses some of its benefits with smaller intervals in current density.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 6","pages":"4077 - 4093"},"PeriodicalIF":2.6,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Process Simulation for Converting CO2 Emissions from the Cement Industry to Dimethyl Ether 将水泥工业排放的二氧化碳转化为二甲醚的工艺模拟
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-09-13 DOI: 10.1007/s13369-024-09530-4
Mohamed Essam, Fatma Gad, Nour Abouseada, Moustafa Aly Soliman, Dina Aboelela
{"title":"Process Simulation for Converting CO2 Emissions from the Cement Industry to Dimethyl Ether","authors":"Mohamed Essam,&nbsp;Fatma Gad,&nbsp;Nour Abouseada,&nbsp;Moustafa Aly Soliman,&nbsp;Dina Aboelela","doi":"10.1007/s13369-024-09530-4","DOIUrl":"10.1007/s13369-024-09530-4","url":null,"abstract":"<div><p>Climate change is the leading severe problem in the twenty-first century, which is associated with greenhouse gas emissions, carbon dioxide that is the foremost cause of global warming and super greenhouse effect. In this concern, to avoid hazardous problems, the steady stream of CO<sub>2</sub> effluents existing in the atmosphere must be transformed to beneficial products for being used as an abundant chemical feedstock. Implementing a new green strategy, which is known for the catalytic hydrogenation of CO<sub>2</sub> into alternative fuels and valuable chemicals, will be a long-lasting solution to alleviate CO<sub>2</sub> emissions. In this paper, a process simulation showing the synthesis of dimethyl ether (DME) from CO<sub>2</sub> hydrogenation (CO<sub>2</sub> produced from EL-Sewedy cement industry) is performed using Aspen HYSYS V10 to attain a complete distinctive design for all equipment for producing a capacity of 475,000 tons per year, while energy integration is performed using Energy Analyzer Simulation software. In the main model, catalytic dehydration is done in a single-pass reactor, and then separation in multi-column product separations. Other configurations were tested by developing three simulation models with different reactors, a double pipe reactor and membrane reactor were with the aim of modification for higher energy efficiency and lower operating and capital costs. Moreover, an economic and environmental study was obtained for the basic &amp; the integrated case, which showed that the total annual/capital costs based on the “base case” are estimated to be 90 million USD without heat integration while the optimum and integrated costs are found to be 100 Million USD. Finally, process optimization and integration were obtained to reduce the utilized energy of the hot &amp; cold utilities by 90% and 60%, respectively.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 6","pages":"4065 - 4076"},"PeriodicalIF":2.6,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13369-024-09530-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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