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SSRN 2022年

作者： Budhi, Yogi Wibisono Irawan, Hans Kristian Restiawaty, Elvi Miyamoto, Manabu Nishiyama, Norikazu Uemiya, Shigeyuki Department of Chemical Engineering Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Research Center for Nanosciences and Nanotechnology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Research Group of Chemical Engineering Process Design and Development Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Mashudi No.1 West Java 45363 Indonesia Department of Chemistry and Biomolecular Science Faculty of Engineering Gifu University 1-1 Yanagido Gifu501-1193 Japan Division of Chemical Engineering Graduate School of Engineering Science Osaka University 1-3 Machikaneyama-cho Toyonaka Osaka560-8531 Japan

This study investigates the recovery of hydrogen from a gaseous mixture of hydrogen, nitrogen, carbon monoxide, and carbon dioxide using a counter-current flow through a Pd82-Ag18/α-Al2O3 membrane during start-up period. The objective is to understand the transient behavior of hydrogen permeation through the Pd82-Ag18/α-Al2O3 membrane with focus for binary, ternary, and quaternary mixtures. A (Formula Presented) thick Pd82-Ag18/α-Al2O3membrane was prepared by electroless plating and was supported by an α-Al2O3 tube with a 1.5-mm thickness. Hydrogen separation was performed at a temperature of (Formula Presented) and atmospheric pressure. The membrane was operated for an 8-h period commenced from start-up and the performance of the Pd82-Ag18/α-Al2O3 membrane was measured in terms of hydrogen flux and hydrogen recovery. The results showed a slight membrane deactivation because of the presence of N2 and CO2 in the mixed feed gas, while a pronounced deactivation was observed when CO was a constituent of the feed gas. The effect of the co-existing gases on the hydrogen flux, in increasing order, was CO > CO2 > N2. The co-existing gases, if present as a large fraction in the feed, induces dilution, concentration polarization, and inhibition over the membrane surface, which in turn, decreases the performance of the Pd82-Ag18/α-Al2O3 membrane. © 2022, The Authors. All rights reserved.

关键词： Carbon dioxide

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Editorial: Proceedings of ABBS-international conference on biohydrogen and bioprocesses 2022 (ABBS 2022)

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Frontiers in Bioengineering and Biotechnology 2024年 12卷 1390377页

作者： Xia, Ao Herrmann, Christiane Reungsang, Alissara Show, Pau-Loke Trably, Eric Wu, Junjun Key Laboratory of Low-grade Energy Utilization Technologies and Systems Chongqing University Ministry of Education Chongqing China Institute of Engineering Thermophysics School of Energy and Power Engineering Chongqing University Chongqing China Potsdam Germany Research Group for Development of Microbial Hydrogen Production Process from Biomass Department of Biotechnology Faculty of Technology Khon Kaen University Khon Kaen Thailand Department of Chemical Engineering Khalifa University Abu Dhabi United Arab Emirates Department of Chemical and Environment Engineering Faculty of Science and Engineering University of Nottingham Malaysia Semenyih Malaysia INRAE Université de Montpellier LBE Narbonne France

A massive amount of solid wastes (such as straws, manures, plastic and food wastes), liquid wastes (such as municipal and agricultural wastewaters), and gaseous wastes (such as flue gases rich in carbon dioxide) are generated from industrial, residential, transportation and agricultural sectors (Siegelman et al., 2021;Vyas et al., 2022;You et al., 2022). These wastes would cause significant adverse environmental impacts if they are not properly treated. Turning wastes into biofuels and bioproducts can make a substantial contribution to the clean energy supply and environmental protection (Bhatia et al., 2018;Peng et al., 2023;Wang et al., 2023). However, competitive and sustainable circular economy solutions via scientific and technological innovation are urgently needed to improve the conversion rates and efficiencies of such *** research topic includes four original research papers, which could provide various solutions to upgrade the solid, liquid, and gaseous wastes to value-added *** digestion is a mature technology and has been developed for over a hundred years. However, anaerobic mono-digestion suffers from drawbacks such as low biogas/biomethane yield, digester instability and limited year-round availability of specific feedstocks (Karki et al., 2021). A study by Kriswantoro et al. investigated the performance of anaerobic co-digestion of untreated Napier grass and food waste hydrolyzed with subcritical water. An optimal biomethane yield of 614.37 mL/g VS was obtained at a 1:1 ratio (VS basis) of Napier grass and food waste during two-stage anaerobic digestion that sequentially produced biohydrogen and biomethane. The methane concentration in the biogas was higher than 65% on day 20 and maintained in the range of 65%-80% until the end of anaerobic digestion. Liquid digestate derived from anaerobic digestion contains high levels of nitrogen and phosphorus pollutants, which may require an energy-intensive and high-cost post-treatment

关键词： biofuels waste treatment fermentation mass transfer circular economy

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Feasibility study of bio-hydrogenated diesel (BHD) production: A case study in Thailand

Feasibility study of bio-hydrogenated diesel (BHD) productio...

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5th KKU International engineering Conference 2014, KKU-IENC 2014

作者： Angsana, Kantama Chaiwat, Prapainainar Phavanee, Narataruksa Piyapong, Hunpinyo Department of Chemical Engineering King Mongkut's University of Technology North Bangkok 1518 Pracharat 1 Rd Wongsawang Bang-Sue Bangkok 10800 Thailand Research and Development Centre for Chemical Engineering Unit Operation and Catalyst Design King Mongkut's University of Technology North Bangkok 1518 Pracharat 1 Rd Wongsawang Bang-Sue Bangkok 10800 Thailand Department of Chemical Process Engineering Technology King Mongkut's University of Technology North Bangkok Rayong Campus Nonglalok Bankhai Rayong 21120 Thailand

ISBN: (纸本)9783038350903

It founded that crude palm oil, CPO, could be changed to Bio-hydrogenated Diesel, BHD, which has a potential to replace the petroleum-derived diesel. Therefore, techno-economic feasibility of BHD production for Thailand was studied with a capacity of 1 million liters per day (MLD) of BHD. In this work, a conceptual design of BHD process was developed by using process simulator, ASPEN Plus. Calculation of mass and energy balance, equipment sizing and cost estimation in five major unit operations were performed. The total capital investment was calculated and used for economic analysis to estimate the return on investment, price value and payback period. The results showed that total capital investment cost was 174.34 millions USD with 1 MLD of BHD, PBP was 5 years with 17.02% ROI. BHD price of 1.16 USD/L. © (2014) Trans Tech Publications, Switzerland.

关键词： Conceptual design

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Recapitalizing the Navy through optimized manning and improved reliability

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NAVAL ENGINEERS JOURNAL 1998年第6期110卷 61-72页

作者： Anderson, DE Malone, TB Baker, CC Mr. David E. Anderson:is a Navel Engineer with the Naval Sea Systems Command where he is currently assigmd to the HumanSystems Integration branch. Mr Anderson has a Bachelor of Science degree an Environmental Engineering from Flurida Technological University and a Master's in Environmental Engiwering from the University of Central Flurida. He currentEy is an HSI manager for a number oflvay R&D and skig acquisition efforts. Dr. Thomas B. Malone:received a Ph.D. in Experimental Psychology from Fordham University in 1964. He is President of Carlow International Incorporated an organization dedicated to human factors research and development with emphasis an mantime systems. He has directed over 350 programs and projects in his 33 year career and is responsible for overall management of all contract programs within the Corporation. He is a Past President of the Human Factors and E r g m i c s Society (HFES) of which he is a Fellow. He is also a Fellow of the Washington Academy of Sciences He was selected as a member of the N A S Space Sciences Technical Advisuiy Committee on Technoloo Requirements for Human Performance on Long Duration Space Missions in 2989 and 90. He was elected as the First Chair of the Systems Development Technical Group of the HFES. Dr Malone is currently managing eflorts to devehp and auto- mate standardized processes for canducting human systems integration (HSI) in the military weapon systems acquisition process and fov developing automated tools to facilitate fledormance of specific steps in the HSI process. Dr Malone also is currently occupied in applying human engineering to the DD 21 and is serving as the Chair ofthe System ManninglHuman Perfomzance Working IPT under the DD 21 ManninglHSI IPT chaired ty PMS 500M. Mr. Clifford Baker:has over 20 years experience in developing and applying human factors technology to complex systems. He holds a masters degree in psychology with a specialization in human factors engineering and he is a Board Certified Human Factors Engineering Profesional

Reduced manning is the process (and the result) of removing human functions from a system while retaining or improving system operability and effectiveness. Reliability and maintainability characterize a system's operability and effectiveness. Reduced manning impacts system reliability by changing the characteristics of (1) human error associated with system operation and maintenance, (2) time to repair failed components, and (3) mean-time-between-failures (MBTF) in a reduced manning environment. Simply reducing manning without compensating for system dependence on human involvement generally has a negative impact on system maintainability. Methods to address this include (1) human-system integration design of maintenance interfaces and (2) design of operations activities that are closely related to device failures. After demonstrating reliable performance through testing and operation, ship commanders can be assured that fewer people can effectively operate and maintain Navy ships and systems.

关键词： Naval vessels

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Modelling and Simulation of Biobutanol Fermentation by Clostridium saccharoperbutylacetonicum N1-4

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IOP Conference Series: Materials Science and engineering 2021年第1期1143卷

作者： Elvi Restiawaty Ardiyan Harimawan Novaldio Rizki Fauz Irfan Rafi Research Group of Chemical Engineering Process Design and Development Faculty Industrial Technology Institut Teknologi Bandung Deparment of Bioenergy Engineering and Chemurgy Faculty Industrial Technology Institut Teknologi Bandung Biosciences and Biotechnology Research Center Institut Teknologi Bandung Department of Chemical Engineering Faculty Industrial Technology Institut Teknologi Bandung Research Group of Chemical Engineering Product Design and Development Faculty Industrial Technology Institut Teknologi Bandung

Biobutanol exhibits high octane number, non-hygroscopic, non-corrosive and can be mixed with gasoline without engine modification. Furthermore, the use of biobutanol as a fuel can reduce the negative impact of environmental due to the use of fossil-based fuel. Therefore, research on the development of biobutanol is still very much needed, including research on modelling and simulation of biobutanol production by fermentation. With modelling and simulation, we can predict various biobutanol production behaviour. This paper deals with the modelling and simulation of the production of biobutanol from glucose in batch bioreactor using Clostridium saccharoperbutylacetonicum N1-4. C. saccharoperbutylacetonicum N1-4 exhibits a good growth ability on simple or complex sugars, such as glucose, sucrose, or starch. This study concerned with the kinetics models of biobutanol production as developed by Shinto based on the C. acetobutylicum metabolic pathway which consists of the glycolysis, acidogenesis and solventogenesis pathways with several simplification of reactions. In this study, modelling was carried out by adapting the rate parameter value of k13 indicating the rate constant of cell death. The adapted models were applied to determine the effect of the initial concentration of glucose and organic acids on the production of butanol and compared to the experimental data from previous research. Model simulations were performed by using MATLAB® software. The butanol yield was affected by the initial glucose concentration. The highest butanol yield of 77% was obtained at a glucose concentration of 22 g/L. The simulation results exhibit that the biobutanol yield decreases when the glucose concentration is higher than 22 g/L. These results are consistent with previous experimental data. The simulation results also show the effect of the concentration of acetic acid in the fermentation medium and can be optimized. From the simulation results, the presence of 7.5 g/L acetic acid

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Uniform National Discharge Standards - Overview and implications for future naval engineering

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NAVAL ENGINEERS JOURNAL 1999年第3期111卷 219-235页

作者： Kopack, D Smith, G Kim, D Erne, DL David F. Kopack:is a Program Manager in the Naval Sea Systems Command Office of Environmenta1 Protection Occupational Safety and Health SEA 00T. Mr. Kopack received his bachelor and master of science degrees in the physical sciences and management from the University of Maryland. Mr. Kopack has 20 years of experience in ship design and engineering industrial facility operations and program management. Gordon D. Smith:is a Chemical Engineer with the Carderock Division Naval Surface Warfare Center in Bethesda Maryland and is working in the Naval Sea Systems Command Environmental and Auxiliary Systems Group. SEA 03L. Mr. Smith received his bachelor of science degree in chemical engineering from The Ohio State University. He has over 13 years of ronmental issues. In addition to supporting the development of Uniform National Discharge Standards he has been involved in research design testing and development of pollution abatement technologies suitable for use aboard Navy Ships. Don K. Kim:is a Senior Mechanical Engineer with the naval architecture and marine engineering firm of M. Rosenblatt & Son Inc. in Arlington Virginia. Mr. Kim received his bachelor of science and master of engineering degrees in mechanical engineering from the University of Virginia. He is a registered Professional Engineer in the Commonwealth of Virgina. Mr. Kim has ten years of experience in the design installation maintenance and repair of shipboard mechanical systems equipment and components with specific expertise in compressor pump and fan design and operation. He is a member of the American Society of Naval Engineers and the American Society of Mechanical Engineer. David L. Erne:is an Associate with Booz Allen and Hamilton Inc. in Arlington Virginia. Mr. Erne received his bachelor of science degree in chemical engineering from the University of Idaho. He has over twelve years of experience in environmental program management and consulting. In addition to his support for the Uniform National Discharge Standards prog

In the Fiscal Year 1996 National Defense Authorization Act, Congress amended the Clean Water Act to provide the Department of Defense and the Environmental Protection Agency authority to jointly establish standards for incidental discharges from Armed Forces' vessels. The uniform national standards would apply to discharges from vessels of the Navy, Military Sealift Command, Army, Marine Corps, Air Force, and Coast Guard to the navigable waters and contiguous zone of the U.S. and its territories. Uniform National Discharge Standards (UNDS) will require control of discharges, by either a technology or management practice. UNDS will facilitate the Armed Forces' ability to better design and build future vessels to be environmentally sound and to maintain the operational flexibility of Armed Forces' vessels both domestically and internationally. The development of standards for Armed Forces' vessel discharges may have greater impact on naval engineering requirements for future vessels than any other single environmental issue, These standards are expected to stimulate the development of innovative vessel pollution control technologies, which on be used for both Armed Forces' vessels and commercial shipping vessels. This paper provides an overview of UNDS development, summarizes the results of UNDS Phase I, provides a summary overview of the preliminary approach for accomplishing UNDS Phase Il, and discusses implications for future naval engineering efforts.

关键词： Replenishment at sea homeland defense shipbuilding Military Personnel Uniform home range Treated water Naval engineering Uniforms Implication Clean Water Act Coastguards

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The potential of ti3c2tx nano-sheets (MXenes) for nanoscale solid lubrication revealed by friction force microscopy

arXiv

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arXiv 2020年

作者： Rodriguez, A. Jaman, M.S. Acikgoz, O. Wang, B. Yu, J. Grützmacher, P.G. Rosenkranz, A. Baykara, M.Z. Department of Mechanical Engineering University of California Merced MercedCA95343 United States Key Laboratory of Marine New Materials and Related Technology Ningbo Institute of Material Technology & Engineering Chinese Academy of Sciences Ningbo315201 China Institute of Engineering Design and Product Development Tribology Research Group TU Wien Vienna1060 Austria Department of Chemical Engineering Biotechnology and Materials FCFM Universidad de Chile Santiago Chile

Ti3C2TX nano-sheets (MXenes) are an emerging class of two-dimensional materials with outstanding potential to be employed in energy storage, catalysis, and triboelectric applications, on length scales ranging from the nano- to macroscopic. Despite rapidly accelerating interest in this new class of materials, their nanoscale frictional properties and in particular, their potential for solid lubrication on the nanoscale, have not been explored in detail yet. In this short communication, we present the first results on the nanoscale frictional characteristics of MXenes, in the form of a friction map obtained on an isolated Ti3C2Tx nano-sheet deposited on a silicon dioxide substrate via friction force microscopy. Our experiments reveal that few-layer Ti3C2Tx nano-sheets indeed act as solid lubricants on the nanoscale, reducing friction on the silicon dioxide substrates, although not as effectively as few-layer graphene. The results reported here pave the way for further studies focusing on nanoscale solid lubrication achieved by Ti3C2TX (MXene) nanosheets. Copyright © 2020, The Authors. All rights reserved.

关键词： Nanosheets

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Synergistic effect of synthesized ZnO nanoflowers coupled with various antibiotics against pathogenic microbes: Characterization, antibacterial and antifungal activity assessment

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Nano-Structures and Nano-Objects 2023年 36卷

作者： Makaoui, Nassima Moghni, Nassiba Boutemak, Khalida Akkache, Lynda Imoudache, Hicham Zafour, Amel Hadj-Ziane Chemical Engineering Laboratory Process Engineering Department Faculty of Technology University Saad Dahleb Blida 1 BP270 Blida 09000 Algeria Research and Development Center SAIDAL GROUP Algiers Algeria Functional Analysis of Chemical Processes Laboratory Process Engineering Department Faculty of Technology University Saad Dahleb Blida 1 BP270 Blida 09000 Algeria Pharmaceutical Inorganic Chemistry Laboratory Faculty of Medicine University Saad Dahleb Blida 1 BP270 Blida 09000 Algeria

In this study, zinc oxide nanoparticles (denoted as ZnO NPs) were synthesized via a simple sol-gel technique using only two precursors. Various techniques were utilized to characterize the prepared ZnO nanoparticles. X-ray diffraction analysis indicated the formation of nanoparticulated crystallite ZnO, whilst XPS spectra confirmed the occurrence of Zn and O atoms. SEM imaging showed a nanoflower morphology with varying particle sizes at the nanoscale, whereas DLS characterization revealed a mean particle diameter that equalled 19 nm. The EDX technique confirmed the presence of Zn and O with 85.43% and 12.4%, respectively. Meanwhile the adopted colorimetric method revealed a 99.9% ZnO loading, implying the high purity of the synthesized material. The synergetic effect of combining ZnO nanoflowers with antibiotics, namely chlortetracycline hydrochloride, spiramycin and azithromycin, on enhancing the antibacterial activity against various bacterial strains was investigated via the disc diffusion technique. The antifungal activity of the synthesized ZnO-antibiotic was also examined. The antibacterial and antifungal activities of chlortetracycline hydrochloride and spiramycin were enhanced in the presence of the ZnO nanomaterial, confirming the synergistic impact of the ZnO-chlortetracycline and ZnO-spiramycin conjunctions. The ZnO-CTC materials exhibited the best synergistic effect both against gram-negative and gram-positive organisms. The inhibitory zone of ZnO-CTC in Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis and Escherichia coli plates were 26.3%, 18.3%, 20.0% and 18.3% higher than that of CTC alone. The inhibition zone of ZnO-CTC against Candida albicans, Saccharomyces cerevisiae and Aspergillus brasiliensis increased by 45.0%, 26.3% and 21.5% in comparison to bare ZnO, respectively. This implies the combination of ZnO-CTC outperforms ZnO in terms of antibacterial efficiency. On the other hand, the antibacterial and antifungal efficiencies we

关键词： Antibacterial activity Antibiotics Antifungal activity Nanoflowers Synergistic effect ZnO

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Natural gas upgrading using a fluorinated MOF with tuned H2S and CO2 adsorption selectivity (vol 3, pg 1059, 2018)

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NATURE ENERGY 2019年第1期4卷 83-83页

作者： Belmabkhout, Youssef Bhatt, Prashant M. Adil, Karim Pillai, Renjith S. Cadiau, Amandine Shkurenko, Aleksander Maurin, Guillaume Liu, Gongping Koros, William J. Eddaoudi, Mohamed King Abdullah University of Science and Technology (KAUST) Division of Physical Sciences and Engineering Advanced Membranes & Porous Materials Center Functional Materials Design Discovery & Development Research Group (FMD3) Thuwal Saudi Arabia Institut Charles Gerhardt Montpellier (UMR CNRS 5253) Université Montpellier Montpellier France School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta USA

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The development of China's Yangtze River Economic Belt:how to make it in a green way?

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Science Bulletin 2017年第9期62卷 648-651页

作者： Yushun Chen Shuanghu Zhang Desheng Huang Bai-Lian Li Junguo Liu Wenjin Liu Jing Ma Fang Wang Yong Wang Shengjun Wu Yegang Wu Jinyue Yan Chuanbo Guo Wei Xin Hao Wang Institute of Hydrobiology & State Key Laboratory of Freshwater Ecology and Biotechnology Chinese Academy of Sciences Wuhan 430072 China State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower Research Beijing 100038 China Policy Research Center for Environment and Economy Ministry of Environmental Protection of P.R. China Beijing 100029 China Ecological Complexity and Modeling Laboratory University of California Riverside CA 92521-0124 USA School of Environmental Science and Engineering Southern University of Science and Technology of China Shenzhen 518055 China Orient Landscape Industry Group Ltd. Beijing 100015 China Department of Biological and Environmental Sciences Alabama A&M University Normal AL 35762 USA Key Laboratory of Reservoir Aquatic Environment & Research Center for Ecological Process of Three Gorges' Eco-Environment Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 China Institute of Eco-city Planning and Design Shanghai BoDa Development Corporation Shanghai 200333 China KTH-Royal Institute of Technology SE-10044 Stockholm Sweden & Malardalen University SE-72123 Vasteras Sweden

The Yangtze River is one of the largest and longest rivers in *** river originates in the Tibet-Qinghai Plateau(headwater reach),passes through the mountainous provinces of Sichuan,Yunnan and Chongqing(upper reach),flows into the Central Plain(middle reach)and Lower Plain(lower reach),and finally empties into the East China Sea in Shanghai(estuary).The Yangtze River Economic Belt(YREB;Fig.1)has a surface area of 2.1

关键词： In The development of China’s Yangtze River Economic Belt:how to make it in a green way

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