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2008（第十届）国际表面活性剂和洗涤剂会议

作者： Hyun Jin Lee Eun Jung Ahn Kwangsuk Jang Jong-Duk Kim Department of Chemical and Biomolecular Engineering（BK21 Graduate Program） and Center for Ultramicrochemical Process SystemsKAISTDaejeon 305-701Republic of Korea

本研究合成了一系列具有不同亲液侧链接枝率的聚（2-羟乙基天冬酰氨）两亲接枝共聚物,它们直接溶解于水中时可以形成多种形貌的分子自组装体。TEM 观察结果显示球形胶束、蠕虫状胶束、管状网络和囊泡各种聚集体结构的转变与疏水侧链接...

本研究合成了一系列具有不同亲液侧链接枝率的聚（2-羟乙基天冬酰氨）两亲接枝共聚物,它们直接溶解于水中时可以形成多种形貌的分子自组装体。TEM 观察结果显示球形胶束、蠕虫状胶束、管状网络和囊泡各种聚集体结构的转变与疏水侧链接枝率有关,并且这些自组装纳米结构的形成可以用界面自由能和堆积参数理论解释。这是关于梳型两亲接枝共聚物体系自组装体形貌的首次报道。本研究显示了梳型两亲接枝共聚物体系自组装体在生物医药领域的诱人应用前景和直接溶解于水大规模制备分子自组装体的可能。

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Development of Supported Catalyst for Hydrogen Production From Sodium Borohydride

Development of Supported Catalyst for Hydrogen Production Fr...

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Global Energy Conference (GEC)

作者： Ahmet Sayilgan Erhan Onat Selma Ekıncı Mehmet Sait İzgı Tatvan Vocational School Electricity and Energy Program Bitlis Eren University Bitlis Türkiye Organized Industrial Zone Vocational School Electricity and Energy Program Bitlis Eren University Bitlis Türkiye Department of Chemistry and Chemical Process Technology Vocational School of Technical Sciences Batman University Batman Türkiye Faculty of Engineering and Architecture Siirt Universit Siirt Türkiye

ISBN: (数字)9798331532611

ISBN: (纸本)9798331532628

The best solution to the problems caused by fossil fuels and the limitations of renewable energy sources is the conversion of hydrogen into energy in fuel cells. The transportation and storage problems, which are the main obstacles to the conversion of hydrogen into energy in fuel cells, can be overcome by storing hydrogen in boron compounds. The recovery of hydrogen stored in boron compounds when needed is carried out through catalytic processes. In this study, a supported catalyst was synthesized for use in hydrogen production from sodium borohydride (SBH), which is one of the main boron compounds used in the solid storage of hydrogen, and the dehydrogenation parameters of the synthesized catalyst were investigated. In this context, chenopodium botrys plant extract was used as a support material for nickel (Ni) metal atoms. At the end of the extraction carried out through a hydrothermal process, Ni atoms were decorated using the impregnation method in the extract, and the Ni@KBHE catalyst was produced via reduction under SBH. After the washing, filtration, and drying processes were carried out under a nitrogen atmosphere, the solution medium, catalyst amount, SBH concentration, and temperature parameters of SBH hydrolysis with the crumbled catalyst were optimized. Optimum values for hydrogen production were obtained using 5% NaOH, 60 mg of catalyst, and 2% SBH. The hydrogen production rate (HGR) at these values was 4664 mL/g min. As a result of the catalytic reaction kinetic calculations, it was determined that the reaction was nth order, and the reaction activation energy was 49.4 kJ/mol.

关键词： Hydrolysis Boron Catalysts Sodium Hydrogen Fuel cells Production Atoms Nickel Compounds

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Critical Review on the Abatement Of Endocrine Disrupting Compounds In Iron-Based Materials Catalyzed Persulfate Systems: Reactive Species, Reaction Mechanisms, and Perspectives

SSRN

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SSRN 2024年

作者： Sun, Ye Huang, Ying Zheng, Shujie Chen, Haojia Yang, Yan Ji, Hongbing Han, Changseok School of Chemical Engineering and Light Industry School of Environmental Science and Engineering Guangdong University of Technology Guangzhou510006 China School of Environment Hangzhou Institute for Advanced Study UCAS Hangzhou310024 China School of Chemistry and Chemical Engineering Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology Guangxi University Nanning530004 China Synergy Innovation Institute of Guangdong University of Technology Shantou515041 China Department of Environmental Engineering INHA University Incheon22212 Korea Republic of Program in Environmental and Polymer Engineering Graduate School of INHA University Incheon22212 Korea Republic of

Persulfate-based advanced oxidation processes have emerged as promising technologies for mitigating endocrine-disrupting compounds (EDCs) in wastewater treatment. Economically viable Fe-based materials with tailored properties have demonstrated significant efficacy in activating persulfate for the decomposition of EDCs through both radical-routes (•OH, SO4•−, and O2•−) and non-radical routes (1O2, surface activated PS complex, and high-valent Fe species). This review summarized the latest advancements in the persulfate activation mechanisms mediated by Fe-based materials, categorized by Fe valence states and the types of reactive species. Furthermore, it critically assesses the influence of active sites of Fe-based catalysts on persulfate activation pathways and summarizes the selective reaction of reactive species towards EDCs. Despite these advancements, several challenges persist in non-radical route-dominated persulfate activation, particularly regarding the impact of Fe-Fe distance on the reactive species and the catalytic role of Fe-based materials for reactions between inorganic ions and persulfate. This review proposes prospective research directions, provides design strategies, and expands the application of Fe-based materials in PS activation for effective EDC abatement in real situations. © 2024, The Authors. All rights reserved.

关键词： Endocrine disrupters

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Direct characterization of fineparticles, by Brian H. Kaye, published by John wiley, and Sons, (1981), 398 pages, $60

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AIChE Journal 1982年第6期28卷

作者： Morriss S. Ojalvo Program Director Particulate and Multiphase Processes Division of Chemical and Process Engineering National Science Foundation Washington DC 20550

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Synergetic strategy: upgrading fuel properties of waste starch composite fuels by blending torrefied spent coffee grounds

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Journal of the Taiwan Institute of chemical Engineers 2024年

作者： Chen, Wei-Hsin Chen, Guan-Hong Lee, Kuan-Ting Gunarathne, Duleeka Sandamali Hoang, Anh Tuan Department of Aeronautics and Astronautics National Cheng Kung University Tainan701 Taiwan Research Center for Smart Sustainable Circular Economy Tunghai University Taichung407 Taiwan Department of Mechanical Engineering National Chin-Yi University of Technology Taichung411 Taiwan International Master's Degree Program on Energy Engineering National Cheng Kung University Tainan701 Taiwan Department of Chemical and Materials Engineering Tunghai University Taichung407 Taiwan Department of Chemical and Process Engineering University of Moratuwa Moratuwa10400 Sri Lanka Faculty of Engineering Dong Nai Technology University Bien Hoa City Viet Nam Graduate School of Energy and Environment Korea University 145 Anam-ro Seongbuk-gu Seoul02841 Korea Republic of

Background: This study presents a composite solid fuel upgrading strategy by blending torrefied spent coffee grounds (TS) into waste starch (WS) at the weight ratios of 0 wt%, 5 wt%, 20 wt%, and 35 wt%. When the blending ratio of TS exceeds 35 wt%, TS-WS composite fuel fails to pelletize. Blending TS in WS contributes to the higher heating value (HHV) and carbon content. Methods: The Taguchi method is utilized to identify the optimal torrefaction conditions for HHV of TS. The highest HHV of TS at 300°C (300-TSCG) is 31.76 MJ∙kg−1, which is about 2.08 times that of WS. The carbon content, HHV, ignition temperature, and combustion reactivity of 35%TS-WS composite fuel are 51.15 wt%, 21.06 MJ∙kg−1, 262°C, and 4.6 wt%∙min-1∙°C−1, respectively. Attenuated total reflectance spectrometer, contact angle, hygroscopicity, mildew observation, storability, and water activity of TS-WS composite fuel are analyzed, and the storability of TS-WS composite fuel is discussed. Significant findings: Compared with 0%TS-WS, the HHV of 35% TS-WS increases 38%, while the carbon content increases by 34%. The mechanical strength of TS-WS decreases with the increase of TS blending amount. The strategy of blending TS and WS can significantly reduce the generation of WS and spent coffee grounds (SCGs) and upgrade the quality of composite solid fuel. Accordingly, TS-WS is a promising composite solid fuel that can approach sustainable production of biofuels without compromising commercial viability. © 2024 Taiwan Institute of chemical Engineers

关键词： Spent fuels

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N-Doped porous carbon nanoflakes : Excellent adsorbent for low pressure CO2 capture

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IOP Conference Series: Earth and Environmental Science 2019年第1期268卷

作者： Siti Aishah Anuar Wan Nor Roslam Wan Isahak Mohd Syahbudin Mastar@Masdar Research Centre for Sustainable Process Technology (CESPRO) National University of Malaysia Chemical Engineering Program Faculty of Engineering and Built Environment National University of Malaysia

Porous carbon is a promising research subject for CO2 capture from post combustion process, direct air capture and recently for hydrogen fuel purification application. Apart from having unique surface area and pore morphology, they can be also be prepared from low cost materials through easy synthesis route. The tuning of their pore size and N heteroatom have also proven to robust its performance in previous studies. Therefore a highly porous N-doped carbon nanoflakes from starch was prepared and its performance in CO2 capture was studied. Among the samples, starch hybrid (SH800) exhibit good CO2 capture capacity of 29.8 wt.% for biohydrogen gas adsorption at mild temperature and pressure. The sample also displayed distinct morphology of nanoflakes and carbon lattice in FESEM and XRD analysis. In summary, the sorbent is a potential material for biohydrogen CO2 capture studies.

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MULTIPLE STATES OF A VISCOUS FREE SURFACE FLOW: TRANSITION FROM PRE-METERED TO A METERING INFLOW

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International Journal for Numerical Methods in Fluids 1998年第9期24卷

作者： M. S. Carvalho L. E. Scriven Coating Process Fundamentals Program Center for Interfacial Engineering and Department of Chemical Engineering and Material Science University of Minnesota Minneapolis MN 55455 U.S.A.

In a forward-roll coating gap or nip, steady laminar flow of liquid between counter-rotating cylinders or rolls is used to split the flow into a coated layer on one roll and a rejected layer on the other. Both layers have free surfaces in contact with air. Liquid may be carried into the gap as a layer on one or both rolls. If the arriving layer is not too thick, all of the liquid flows through the gap, a situation called pre-metered . If the arriving layer is too thick, part of the liquid is rejected and runs back down the lower roll. The flow rate through the gap is said to be metered and is not known a priori . The transition from a pre-metered regime to the metered situation was examined by solving the Navier–Stokes system for steady, two-dimensional flow in a domain bounded by free surfaces, two rigid roll surfaces and chosen inflow and outflow surfaces. The free boundary condition , as described by Papanastasiou et al. ( Int. j. numer methods fluids , 14 , 587 (1992)), was explored and proved to accommodate both the pre-metered and metered regimes. A run-back flow state across the synthetic inlet plane was obtained, provided a condition on the thickness of the arriving layer was replaced by a kinematic condition at a certain stage. The coupled equation system was solved by Galerkin's method with finite element basis functions. The resulting non-linear algebraic system was solved by Newton's method with initialization by pseduo-arc-length continuation and automatic parameter step adjustment. Results show the existence of multiple solutions which can lead to hysteresis. Flow regime maps were constructed to portray the operating parameter range in which a coating bead can exist and the ranges in which a coating gap operates in either the pre-metered or the metering regime. © 1997 by John Wiley & Sons, Ltd. Int. j. numer. methods fluids 24: 813–831, 1997.

关键词： pre-metered metered free boundary condition free surface flow viscous

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Tandem multimer expression of angiotensin I-converting enzyme inhibitory peptide in Escherichia coli

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Biotechnology Journal 2009年第9期4卷 1345-1356页

作者： Fida, Hasan M. Kumada, Yoichi Terashima, Masaaki Katsuda, Tomohisa Katoh, Shigeo Department of Molecular Science and Material Engineering Graduate School of Science and Technology Faculty of Engineering Kobe Japan Department of Chemistry and Materials Technology Kyoto Institute of Technology Kyoto Japan Department of Biosphere Sciences School of Human Science Kobe College Nishinomiya Japan Department of Chemical Engineering Hanyang University 1271 Sa-3-dong Sangrok-gu Ansan 426-791 Korea Republic of Department of Process Engineering and Applied Science Food Science and Technology Program Dalhousie University 1360 Barrington Street Halifax NS B3J 2X4 Canada

It is common for small tandem peptide multimer genes to be indirectly inserted into expression vectors and fused with a protein tag. In this study, a multimer of the tandem angiotensin I-converting enzyme inhibitory peptide (ACE-IP) gene was directly transferred to a commercially available vector and the designed gene was expressed as a repeated peptide in Escherichia coli BL21(DE3)pLysS. The process further developed in our study was the construction of six-repeated ACE-IP synthetic genes and their direct insertion. Protein expression in inclusion bodies was confirmed by SDS-PAGE and Western blot. Acid hydrolysis of inclusion bodies produced single-unit peptides through cleavage of the aspartyl-prolyl bonds. This cleaved recombinant peptide (rACE-IP) was purified using immuno-affinity chromatography followed by reversed phase-HPLC. 105-115 mg of the lyophilized recombinant peptide was obtained from 1 L E. coli culture. In vitro biological activity of rACE-IP was indistinguishable from that of the natural peptide produced by hydrolysis in artificial gastric juice or by acidic hydrolysis. The rACE-IP prepared by recombinant DNA technology and solid-phase synthesis methods showed a similar IC50. This strategy could be used for the expression of important peptides, which have N-terminal proline (P) and C-terminal aspartic acid residues (D) for commercial applications, e.g. functional foods and drinks. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

关键词： Peptides

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NAVAL PROPULSION SYSTEMS WATER-TREATMENT AND CONTROL

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NAVAL ENGINEERS JOURNAL 1985年第4期97卷 133-137页

作者： EICHINGER, BJ The Author is head of the Water Technology and Process Materials Section Naval Ship Systems Engineering Station (NAVSSES) in Philadelphia. She graduated from Marywood College in 1965 with a bachelor's degree in chemistry. Ms. Eichinger began her career with the Navy as an analytical chemist responsible for resolution of shipboard problems involving water water-formed deposits corrosion contamination and chemical cleaning. She with NAVSSES engineers corrected significant fleet problems arising from contaminants in submarine main hydraulic fluid systems and distillate fuel systems. Ms. Eichinger coordinated with the Naval Sea Systems Command to develop evaluate and implement the water treatment program now in use for all non-nuclear naval propulsion and auxiliary water and steam systems. She is a current member of the American Society of Mechanical Engineers and the author of the Naval Ships' Technical Manual chapter Boiler Water/Feedwater Test and Treatment.

The causes and effects of corrosion and contamination in conventional steam generator systems are described briefly. Treatment and control methodologies currently used by the Navy for feedwater, steam, condensate, and boiler water are detailed. Examples are cited of the manner in which Navy personnel are trained in interpretation of analytical data and in trend analysis in order that the ship can exercise preventive and corrective control of problems. Ancillary subjects discussed include chemical cleaning, mechanical cleaning, and out-of-service preservation. An overview of planned improvements is provided.

关键词： FEEDWATER TREATMENT

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CATALYTIC INCINERATION OF EMISSIONS FOR ENERGY CONSERVATION.

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Plant/operations progress 1983年第3期2卷 182-184页

作者： Kenson, Robert E. Met-Pro Corp. Harleysville Pa. 19438 He has over fifteen years' experience in chemical process engineering including petrochemicals fertilizers synfuels energy recovery and polution control processes. In his present position he is responsible for all research/development design and project management activities in pollution control and energy/resource conservation systems for Met-Pro's Systems Division. The author of numerous publications he has presented papers before national meetings of WWEMA APCA AIChE Catalysis Society ACS and AIChE. Ph.D. from Purdue University and an AB from Boston University. He is a member of AIChE APCA AMA and Sigma Xi. As a member of AIChE he has been active as session chairman national program coordinator programming committee member and task force member for the Environmental Division.

The article demonstrates that catalytic incineration is often economically attractive as an alternative to thermal incineration for petroleum and petrochemical process organic emissions. Even where the initial cost of the catalytic incinerator is greater than a comparable-performance thermal incinerator, the lower fuel costs of the catalytic incinerator pay this cost differential back very quickly (1/2 to 2 years). Catalytic incineration can not only be used for pollution control, but also for energy recovery from streams containing combustible gases.

关键词： PETROchemical PLANTS

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