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115th Air and Waste Management Association Annual Conference and Exhibition, ACE 2022

作者： Tarroja, Brian Department of Civil & Environmental Engineering Energy Systems Integration Advanced Power and Energy Program University of California Irvine United States

ISBN: (纸本)9781713866602

• We need to develop a framework for tracking progress towards alignment with a circular economy for the life cycles of solar PV and lithium-ion batteries - as well as other products. • This framework needs to be explicitly grounded in circular economy strategies, but also produce information that is relevant for decision makers involved in battery or solar PV life cycles. • To achieve this, challenges regarding data and assessment needs, as well as barriers for translation to decision-relevant information, need to be overcome. © Advanced Power and energy program 2022.

关键词： Life cycle

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Modal analysis under jittering and kernel clock distribution: single-output identification

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Proceedings of the Institution of Civil Engineers: Smart Infrastructure and Construction 2023年第4期177卷 224-235页

作者： Ramadan, Wasim Ozer, Ekin Sustainable Environment and Energy Systems Program Middle East Technical University Northern Cyprus Campus Turkey School of Civil Engineering University College Dublin Dublin Ireland

Smartphones have attracted attention in the structural health monitoring community due to their embedded multisensory platforms suitable for crowdsourcing innovation. Despite their advantages, smartphone sensors are originally designed for user utility rather than technical engineering applications (e.g. vibration analysis and modal identification). Sampling jitter is among those problems adversely influencing smartphone performance as a scientific device that can be used for characterising civil infrastructure dynamic characteristics. With inconsistencies in the sampling period due to jitter effects, the identified modal frequencies of a structure can deviate from the actual value, which is artificially introduced by smartphone clock errors. In this study, the authors formulate the statistical characteristics of the smartphone sampling period through kernel distribution and apply a digital reconstruction remedy to the sampling jitter problem. Through introductory simulations of a sine wave and physical implementations through shaking table tests equipped with smartphones, the efficiency of kernel distribution diagnosis and the signal-reconstruction remedy is presented. Following the simulation and laboratory applications, the proposed techniques are applied to vibration monitoring of a steel pedestrian bridge in terms of the auto power spectral density and short-time Fourier transform of single-output signals. The results show successful rehabilitation of accelerometer data from smartphones, removing jitter-induced errors to a significant extent and accordingly improving the identification accuracy currently in a single-output setting. © 2023 Emerald Publishing Limited: All rights reserved.

关键词： Vibration analysis

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LOW-carbon hydrogen production via bioenergetic systems: A bibliometric and systematic review

Next Research

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Next Research 2025年第2期2卷

作者： Victor C.L. Arruda Taynara G.S. Lago Glauber Cruz Sayonara A. Eliziário Marta C. Dantas Raphael Abrahão Postgraduate Program in Renewable Energy (PPGER) Center of Renewable and Alternative Energy (CEAR) Federal University of Paraiba (UFPB) João Pessoa Brazil Department of Renewable Energy Engineering Center of Renewable and Alternative Energy (CEAR) Federal University of Paraiba (UFPB) João Pessoa Brazil Processes and Thermal Systems Laboratory (LPSisTer) Department of Mechanical Engineering Federal University of Maranhão (UFMA) São Luís Maranhão Brazil

Biomass, the feedstock for conversion into bioenergy, can come from forestry, agricultural, urban, industrial, or animal environments. energy from biomass can be produced by direct combustion or, converted into biofuels through bioconversion or thermoconversion processes, such as biogases (methane, hydrogen), bioethanol, biodiesel, and others. This study aimed to provide a bibliometric and systematic literature analysis of low-carbon hydrogen and bioenergy systems. A combination of the keywords "biomass," "renewable," "anaerobic digestion" or "biodigestion," and "H2" or "hydrogen" were used. The study covered the period from 2002 to 2022. After applying filters and considering the topic's relevance in current discussions, 49 works were selected and analyzed in detail. The scientific community has shown increasing interest in this field in recent years, with efforts focused on bioenergy, energy sources renewables, and climate change. Several studies, from theoretical models to experimental, were conducted at both laboratory and industrial scales, and agricultural or urban settings. In addition to anaerobic digestion, other conversion processes were explored, such as coupled or isolated dark fermentation and photo-fermentation, particularly when using algal biomass as feedstock. Co-digestion with animals, vegetable, or algae substrates was also discussed. In terms of bibliometrics, the growth trend of research has been since 2017. The increase in articles featuring practical, methodological, and technological innovations led to diverse technological and biomass arrangements. The integration of cascade bioprocesses represents a significant step toward optimizing bioenergy production. This work highlights the trends in low-carbon hydrogen production, particularly through the techniques, technologies, and substrates in various production setup combinations. However, there is still a need for research on the financial and economic aspects of investments and operations in

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Pre-treatment optimization to reduce membrane fouling during produced water treatment with an integrated FO-MD system

Science Talks

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Science Talks 2025年

作者： Muhammad Saqib Nawaz Sofiane Soukane Muhammad Bilal Asif Veerabhadraiah Gudideni Sultan Alrubaish Noreddine Ghaffour Environmental Sciences and Engineering Program Division of Biological and Environmental Sciences and Engineering (BESE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia Physical Sciences and Engineering Division (PSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia Energy Systems Division Process & Control Systems Department Saudi Aramco Dhahran Saudi Arabia

During oil exploration, fresh water that is injected into underground reservoirs returns to the surface loaded with hydrocarbons, salts, and other contaminants. This complex solution is typically known as produced water (PW). Generally, different PW streams are generated at a given site, which, after suitable treatment, are sent for re-injection for enhanced oil recovery or to disposal wells. However, there is a potential for water recovery from this hypersaline contaminated stream. Forward osmosis (FO) and membrane distillation (MD) are two low-pressure membrane treatment technologies successfully used in a single hybrid system for PW treatment. During operation, the key foulants on the FO membrane were CaSiO 3 , CaSO 4 , and NaCl, while for MD, they were SiO 2 and CaSO 4 plus emulsified oil, causing pore clogging. Some foulants were tightly bound and not removed by osmotic backwashing or hydraulic flushing, thus requiring pre-treatment. Different pre-treatment techniques, like ion exchange resins and polymeric and ceramic membrane-based ultrafiltration (UF), were assessed in this study. The resins were able to remove bivalent metallic ions successfully from lower concentration streams only and thus caused an increase in FO flux and a reduction in MD flux by disturbing the FO-MD system equilibrium. The higher concentrations of resins and chemicals required for their regeneration make them unsuitable for such applications. On the contrary, PW pre-treated with polymeric and ceramic UF membranes led to increased FO and MD fluxes without any chemical requirement and proved suitable for pre-treatment.

关键词： Pre-treatment Produced water Ion-exchange resins Ultrafiltration Forward osmosis Membrane distillation

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Enhanced thermal decomposition and combustion performance of ammonium perchlorate composite propellants using LaFeO3 catalyst

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Journal of the Taiwan Institute of Chemical Engineers 2025年

作者： Huang, Chao-Wei Wang, Tse-Hao Chen, Yi-Chu Tsai, Yu-An Huang, Chun-Fu Wang, To-Yu Wu, Chih-Yung Department of Engineering Science National Cheng Kung University Tainan Taiwan Department of Aeronautics and Astronautics National Cheng Kung University Tainan Taiwan International Degree Program on Energy in Engineering National Cheng Kung University Tainan Taiwan Institute of Space Systems Engineering National Cheng Kung University Tainan Taiwan

Background: Advancements in solid composite propellant technology hold significant promise for enhancing thrust capabilities, thereby improving booster performance in terms of payload capacity and trajectory precision. Consequently, the selection of a combustion catalyst is of paramount importance. Methods: LaFeO3 was proposed as a potential combustion catalyst. The characteristics of the catalyst were examined through Scanning Electron Microscopy (SEM), energy Dispersive X-ray Spectroscopy (EDS), X-ray Diffraction (XRD), and Thermogravimetric Analysis (TGA). Concurrently, composite propellant specimens were prepared, and the enhancement of their performance attributable to the incorporation of LaFeO3 on the combustion velocity of the fuel was assessed. The efficacy of LaFeO3 was systematically compared against traditional iron oxide combustion catalysts. Significant findings: The outcomes underscore that introducing LaFeO3 as an additive effectively reduces the instantaneous activation energy of NH4ClO4 at the temperature corresponding to the peak decomposition rate. The results of the measured activation energy indicated that when LaFeO3 was mixed with an oxidant at a concentration of 1 %, the activation energy decreased by approximately 5.88 %. Consequently, this positively impacts the burning rate of the composite solid fuel. Significantly, the promotion of burning velocity by LaFeO3 surpasses that of classic Fe2O3, establishing the former's superiority. Notably, LaFeO3's distinct advantage lies in its capacity to achieve specific performance enhancements with a relatively lower catalyst dosage. © 2025

关键词： Ammonium perchlorate APCP Combustion catalyst Composite solid propellant Lanthanum ferrite Thermal decomposition

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Change in Magnetic Order in NiPS3 Single Crystals Induced by a Molecular Intercalation

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Chemistry of Materials 2025年第10期37卷 3594-3607页

作者： Chakraborty, Nirman Harchol, Adi Arnold, Beatriz Costa Sharma, Kusha Prabhu Gaonkar, Diksha Abu-Hariri, Azhar Yadav, Rajesh Kumar Dawod, Muhamed Eyal, Anna Y., Amouyal T., Brumme T., Heine D., Naveh E., Lifshitz Schulich Faculty of Chemistry Solid State Institute Russel Berrie Nanotechnology Institute Grand Program for Energy and the Helen Diller Quantum Center Technion-Israel Institute of Technology Haifa3200003 Israel Helmholtz-Zentrum Dresden-Rossendorf Bautzner Landstr. 400 Dresden01328 Germany Center for Advanced Systems Understanding CASUS Untermarkt 20 Gorlitz02826 Germany Faculty of Engineering Bar-Ilan University Ramat-Gan5290002 Israel Institute of Nanotechnology and Advanced Materials Bar-Ilan University Ramat-Gan5290002 Israel Department of Materials Science and Engineering Technion-Israel Institute of Technology Haifa3200003 Israel Department of Physics Technion Haifa3200003 Israel Department of Theoretical Chemistry Technische Universität Dresden Bergstrasse 66 Dresden01069 Germany Yonsei University and ibs-cnm Seoul120-749 Korea Republic of

Intercalation is a robust method for tuning the physical properties of a vast number of van der Waals (vdW) materials. However, the prospects of using intercalation to modify magnetism in van der Waals (vdW) systems and the associated mechanisms have not been adequately studied. In this work, we modulated magnetic order in XY antiferromagnet NiPS3 single crystals by introducing pyridine molecules into the vdW’s gap under different thermal conditions. X-ray diffraction measurements indicated pronounced changes in the lattice parameter β, while magnetization measurements at in-plane and out-of-plane configurations exposed reversal trends in the crystals’ Néel temperatures through intercalation/deintercalation processes. The changes in magnetic ordering were also supported by three-dimensional thermal diffusivity experiments. The preferred orientation of the pyridine dipoles within the vdW gaps was deciphered via polarized Raman spectroscopy. The results highlighted the relationship between the preferential alignment of the intercalants, thermal transport, and crystallographic disorder, along with the modulation of anisotropy in the magnetic order. DFT + U calculations indicated that the varying interlayer exchange interactions, regulated by intercalants, were responsible for modulating samples’ magnetic ordering. The study uncovers the possible merit of intercalation for manipulating spin orientations in spin electronics and advanced quantum devices. © 2025 American Chemical Society.

关键词： Magnetization reversal

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Comprehensive technical analysis of post-combustion carbon capture and storage based on monoethanolamine absorption for petrochemical industry in Indonesia

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Clean energy 2024年第6期8卷 16-36页

作者： Muh Asyrofi Rahma Muthia Mohammad Akita Indianto Energy Systems Engineering Graduate Program Department of Interdisciplinary EngineeringFaculty of EngineeringUniversitas IndonesiaKampus Baru UI DepokDepokWest Java 16424Indonesia Department of Chemical Engineering Faculty of EngineeringUniversitas IndonesiaKampus Baru UI DepokDepokWest Java 16424Indonesia Sustainable Energy Systems and Policy Research Cluster Universitas IndonesiaKampus Baru UI DepokDepokWest Java 16424Indonesia Tropical Renewable Energy Center Faculty of EngineeringUniversitas IndonesiaKampus Baru UI DepokDepokWest Java 16424Indonesia

The implementation of carbon capture and storage in the petrochemical industry is one of the means of *** research focuses on a comprehensive technical analysis of the deployment of post-combustion carbon capture and storage based on monoethanolamine absorption in the petrochemical *** olefin complex petrochemical industry in Tuban,Indonesia,is the basis for the analysis,which includes a steam cracker,polyethylene,polypropylene,and raw pyrolysis gasoline hydrotreating units,with capacities of 1000,940,600,and 570 kilotons/year,*** total energy consumption is about 16024.53 GJ/h,and the CO_(2) emissions are about 1.6 megatons/*** on these plant systems,comprehensive technical analyses of the implementation of carbon capture and storage in that industry were performed using Aspen HYSYS®simulation *** analysis was carried out to determine the total CO_(2) captured,energy intensity,monoethanolamine consumption,and net CO_(2) captured in various scenarios based on the number of absorber column stages,absorption pressure,and desorption *** CO_(2) storage site is about 100 km away and is transported by an onshore pipeline with a supercritical phase of CO_(2).The optimal net CO_(2) capture value is achieved by setting up a 50-stage absorber column with a pressure of 1 barg and a temperature of 110℃ at the top of the desorber column,resulting in a CO_(2) capture yield of 86.4%and an energy intensity of 12.6 GJ/ton CO_(2).Under these conditions,the net CO_(2) captured in the scenario based on gas power plants’electricity is 0.225 megatons/year,while in the scenario based on gas power plants incorporating 30%biomass electricity,it is 0.544 megatons/*** increased use of renewable energy in carbon capture and storage facilities,more net CO_(2) is *** study can be applied to various cases of post-combustion carbon capture and storage implementation in the industrial sector,especially in the

关键词： carbon capture and storage petrochemical olefin monoethanolamine absorption pipeline injection energy intensity net captured CO_(2)

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Relationship between temperature and magnet skew angle in PMSG for low-speed wind applications

Relationship between temperature and magnet skew angle in PM...

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2020 International Conference on Power, energy and Innovations, ICPEI 2020

作者： Trongtorkarn, Mintra Theppaya, Thanansak Luengchavanon, Montri Prince of Songkla University Hatyai Energy Technology Program Faculty of Engineering Songkhla Thailand Interdisciplinary Graduate School of Energy Systems Songkhla Thailand

ISBN: (纸本)9781728172408

The Permanent Magnet Synchronous Generators (PMSG) was generally used for low speed wind turbines. A skew magnet (rotor) was practically utilized for reducing the starting torque of the PMSG operating at low wind speeds. However, the thermal conduction in the air-coil (stator) can be effected by the magnet skew angle. The thermal conduction was then measured at three different areas, in the middle, at the surface and between the air-coil. The higher thermal conduction is found out to be located in the middle of the air-coil. When the skew angle was zero, the temperature maintained at 41.2°C for 120 minutes at 250 rpm while a 20 degrees angle skew resulted in the lower temperature at 39.5°C for 120 minutes at the same speed. At the higher turbine speed, 500 rpm, the non-skew magnet generated the temperature of 48.8°C for 120 minutes while the temperatures of a 20 degree angle skew read 46°C for 120 minutes. Overall, the magnet skewed angle at 20 degrees decreased the temperature by approximately 4.13% and 5.74% for 120 minutes at 250 and 500 rpm respectively. Therefore, the skew magnet angle can practically reduce the temperature in PMSGs for applications based on low-speed wind turbines. © 2020 IEEE.

关键词： Wind turbines

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Is there a sustainable future for nuclear power?

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IEEE Power and energy Magazine 2006年第4期4卷 63-74页

作者： MacGill, Iain Healy, Stephen Outhred, Hugh School of History and Philosophy of Science Faculty of Arts and Social Science Environmental Studies Program CEEM Energy Systems Research Group School of Electrical Engineering and Telecommunications Institution of Engineers Australia IEEE

Nuclear power has a troubled past and the future remains uncertain. There are significant uncertainties regarding crucial elements of future large-scale expansion of the use of civilian nuclear power, including nuclear power proliferation, safety, and waste management. Wider uncertainties include nuclear power's potential to help in averting the growing risks of dangerous climate change. The nuclear bomb dropped on Hiroshima in 1945 heralded the arrival of nuclear power. No other energy technology has made such as an impact on the human mind as an astounding source of military power and foreign policy strength. This technology currently supplies 22% of electricity in the Organisation for Economic Cooperation and Development (OECD) and 6% in developing countries. The solution to have a positive future for nuclear power technology is to frame decision making in order to best manage the challenges nuclear power presents.

关键词： Nuclear energy

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Study of Shared energy Storage Considering Battery Degradation on Remote Island

Study of Shared Energy Storage Considering Battery Degradati...

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2024 International Conference on Green energy, Computing and Sustainable Technology, GECOST 2024

作者： Asri, Rishal Aki, Hirohisa Kodaira, Daisuke Institute of Systems and Information Engineering University of Tsukuba Tsukuba Japan Energy System Engineering Study Program Institut Teknologi Sumatera Lampung Indonesia

ISBN: (纸本)9798350357905

Solar photovoltaic generation and energy storage are being used to power rural places. However, remote users are burdened by private energy storage devices. Remoteness limits the economic viability of cooperative energy storage. Our work proposes a shared energy storage model considering battery degradation. To test the model, we compared Individual, Neighbor, and Communal scenarios. The system was built as a mixed integer linear programming model to investigate optimal operating methods. Compared to the other situations, the Neighbor scenario saves operational expenses by 4.97%. Finally, the self-consumption rate shows optimal penetration of renewable energy parameters. © 2024 IEEE.

关键词： Integer programming

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