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arXiv 2024年

作者： Wang, Zhiyuan Nabavi, Seyed Reza Rangaiah, Gade Pandu Department of Chemical and Biomolecular Engineering National University of Singapore Singapore117585 Singapore Department of Computer Science DigiPen Institute of Technology Singapore Singapore139660 Singapore Department of Applied Chemistry Faculty of Chemistry University of Mazandaran Babolsar Iran School of Chemical Engineering Vellore Institute of Technology Vellore632014 India

Optimization has found numerous applications in engineering, particularlysince 1960s. Many optimization applications in engineering have more than oneobjective (or performance criterion). Such applications require multi-objective(or multi-criteria) optimization (MOO or MCO). Spurred by this and developmentof techniques for handling multiple objectives, MOO has found many applicationsin engineering in the last two decades. Optimization of an application for morethan one objective gives a set of optimal solutions (known as non-dominated orPareto-optimal solutions), which are equally good in the sense that noobjective can be further improved without resulting in deterioration of atleast one other objective. MOO in engineering has mainly focused on developmentof a model for the application, formulation of the MOO problem and solution ofthe formulated problem to find Pareto-optimal solutions. However, forcompletion of MOO, one more step is required to choose one of these optimalsolutions for implementation. Copyright © 2024, The Authors. All rights reserved.

关键词： Product design

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Bioinspired Macromolecular Materials

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BIOMACROMOLECULES 2021年第1期22卷 1-3页

作者： Webber, Matthew J. Kamat, Neha P. Messersmith, Phillip B. Lecommandoux, Sebastien University of Notre Dame Department of Chemical & Biomolecular Engineering Notre Dame Indiana 46556 United States Northwestern University Department of Biomedical Engineering Evanston Illinois 60208 United States University of California Berkeley Department of Materials Science & Engineering Berkeley California 94720 United States University of Bordeaux CNRS Bordeaux INP LCPO UMR 5629 33600 Pessac France

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Methylene Blue Removal on Biodegradable Adsorptive Membranes Fabricated From Sugarcane Bagasse Pulp: Characterization and Performance Study

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Macromolecular Symposia 2024年第2期413卷

作者： Elshabrawy, Salma O. M. Elhussieny, Amal Taha, Mahmoud M. Konsowa, Abdelaziz H. Fahim, Irene S. Smart Engineering Systems Research Center Nile University Juhayna Square Giza El Sheikh Zayed Egypt Chemical Engineering Department Faculty of Engineering Alexandria University Alexandria21544 Egypt Environmental Engineering Program Zewail City of Science and Technology University of Science and Technology October Gardens 6th of October Giza12578 Egypt

Dye-containing waste should be carefully treated using environmentally friendly technology to prevent environmental harm and preserve water resources. Adsorptive membranes are a promising new approach for decreasing, recovering, and reusing waste while also removing contaminants like dyes. In this work, two different techniques are employed to create membranes using sugarcane bagasse pulp and carbon from charcoal. In the first technique, the surface of sugarcane bagasse is coated with charcoal paste as shown in Figure 1, while in the second, the carbon is combined with sugarcane bagasse pulp particles before being formed into sheets. It is discovered that the manufactured membranes has micron-sized pores. It is discovered that the mixed-fabricated membrane has a 99.4% better efficiency than the coated one. The membranes' surfaces are characterized using FTIR and SEM analysis. © 2024 Wiley-VCH GmbH.

关键词： Charcoal

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Vertically Aligned Silicon Carbide Nanowires/Boron Nitride Cellulose Aerogel Networks Enhanced Thermal Conductivity and Electromagnetic Absorbing of Epoxy Composites

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Nano-Micro Letters 2022年第7期14卷 209-227页

作者： Duo Pan Gui Yang Hala MAbo-Dief Jingwen Dong Fengmei Su Chuntai Liu Yifan Li Ben Bin Xu Vignesh Murugadoss Nithesh Naik Salah MEl-Bahy Zeinhom MEl-Bahy Minan Huang Zhanhu Guo Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002People’s Republic of China Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon Tyne NE18STUK Integrated Composites Laboratory(ICL) Department of Chemical and Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996USA Advanced Materials Division Engineered Multifunctional Composites(EMC)Nanotech LLCKnoxvilleTN 37934USA College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024People’s Republic of China Department of Mechanical and Manufacturing Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipalKarnataka 576104India Department of Chemistry Turabah University CollegeTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Chemistry Al-Azhar UniversityNasr CityCairo 11884Egypt

With the innovation of microelectronics technology, the heat dissipation problem inside the device will face a severe test. In this work, cellulose aerogel(CA) with highly enhanced thermal conductivity(TC) in vertical planes was successfully obtained by constructing a vertically aligned silicon carbide nanowires(SiC NWs)/boron nitride(BN) network via the ice template-assisted strategy. The unique network structure of SiC NWs connected to BN ensures that the TC of the composite in the vertical direction reaches 2.21 W m^(-1) K^(-1) at a low hybrid filler loading of 16.69 wt%, which was increased by 890% compared to pure epoxy(EP). In addition, relying on unique porous network structure of CA, EP-based composite also showed higher TC than other comparative samples in the horizontal direction. Meanwhile, the composite exhibits good electrically insulating with a volume electrical resistivity about 2.35 × 10^(11) Ω cm and displays excellent electromagnetic wave absorption performance with a minimum reflection loss of-21.5 dB and a wide effective absorption bandwidth(<-10 dB) from 8.8 to 11.6 GHz. Therefore, this work provides a new strategy for manufacturing polymer-based composites with excellent multifunctional performances in microelectronic packaging applications.

关键词： Epoxy Ice template Vertical alignment Thermal conductivity Multifunctionality

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Sensitivity Assessment of Multi-Criteria Decision-Making Methods in chemical engineering Optimization Applications

arXiv

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arXiv 2024年

作者： Nabavi, Seyed Reza Wang, Zhiyuan Rangaiah, Gade Pandu Department of Applied Chemistry Faculty of Chemistry University of Mazandaran Babolsar Iran Department of Computer Science DigiPen Institute of Technology Singapore Singapore139660 Singapore Department of Chemical and Biomolecular Engineering National University of Singapore Singapore117585 Singapore School of Chemical Engineering Vellore Institute of Technology Vellore632014 India

This chapter assesses the sensitivity of multi-criteria decision-making (MCDM) methods to modifications within the decision or objective matrix (DOM) in the context of chemical engineering optimization applications. Employing eight common or recent MCDM methods and three weighting methods, this study evaluates the impact of three specific DOM alterations: linear transformation of an objective (LTO), reciprocal objective reformulation (ROR), and the removal of alternatives (RA). Our comprehensive analysis reveals that the weights generated by entropy method are more sensitive to the examined modifications compared to the criteria importance through intercriteria correlation (CRITIC) and standard deviation (StDev) methods. ROR is found to have the largest effect on the ranking of alternatives. Moreover, certain methods, gray relational analysis (GRA) without any weights, multi-attributive border approximation area comparison (MABAC), combinative distance-based assessment (CODAS), and simple additive weighting (SAW) with entropy or CRITIC weights, and CODAS, SAW, and technique for order of preference by similarity to ideal solution (TOPSIS) with StDev weight are more robust to DOM modifications. This investigation not only corroborates the findings from the previous study, but also offers insights into the stability and reliability of MCDM methods in the context of chemical engineering. Copyright © 2024, The Authors. All rights reserved.

关键词： chemical stability

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Multi-Criteria Decision Making in chemical and Process engineering: Methods, Progress and Potential

arXiv

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arXiv 2024年

作者： Wang, Zhiyuan Nabavi, Seyed Reza Rangaiah, Gade Pandu Department of Computer Science DigiPen Institute of Technology Singapore Singapore828608 Singapore Department of Applied Chemistry Faculty of Chemistry University of Mazandaran Babolsar Iran Department of Chemical and Biomolecular Engineering National University of Singapore Singapore117585 Singapore School of Chemical Engineering Vellore Institute of Technology Vellore632014 India

Multi-criteria decision making (MCDM) is necessary for choosing one from the available alternatives (or from the Pareto-optimal solutions obtained by multi-objective optimization), where the performance of each alternative is quantified against several criteria (or objectives). This paper presents a comprehensive review of the application of MCDM methods in chemical and process engineering. It systematically outlines the essential steps in MCDM, including the various normalization, weighting, and MCDM methods that are critical to the decision-making. The review draws on published papers identified through a search in the SCOPUS database, focusing on works by authors with more contributions to the field and on highly cited papers. Each selected paper is analyzed based on the MCDM, normalization and weighting methods used. Additionally, this paper introduces two readily available programs for performing MCDM calculations. In short, it provides insights into MCDM steps and methods, highlights their applications in chemical engineering, and discusses the challenges and prospects in this area. Copyright © 2024, The Authors. All rights reserved.

关键词： Optimal systems

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Integrated dynamic wet spinning of core-sheath hydrogel fibers for optical-to-brain/tissue communications

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国家科学评论（英文版） 2021年第9期8卷 83-94页

作者： Guoyin Chen Gang Wang Xinrong Tan Kai Hou Qingshuo Meng Peng Zhao Shun Wang Jiayi Zhang Zhan Zhou Tao Chen Yanhua Cheng Benjamin S.Hsiao Elsa Reichmanis Meifang Zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China State Key Laboratory of Medical Neurobiology MOE Frontiers Center for Brain ScienceInstitute of Brain ScienceDepartment of OphthalmologyZhongshan HospitalFudan UniversityShanghai 200032China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Department of Chemistry Stony Brook UniversityStony BrookNY 11794USA School of Chemical and Biomolecular Engineering School of Chemistry and BiochemistrySchool of Materials Science and EngineeringGeorgia Institute of TechnologyAtlantaGA 30332USA

Hydrogel optical light-guides have received substantial interest for applications such as deep-tissue biosensors,optogenetic stimulation and photomedicine due to their biocompatibility,(micro)structure control and tissue-like Young's ***,despite recent developments,large-scale fabrication with a continuous synthetic methodology,which could produce core-sheath hydrogel fibers with the desired optical and mechanical properties suitable for deep-tissue applications,has yet to be *** this study,we report a versatile concept of integrated light-triggered dynamic wet spinning capable of continuously producing core-sheath hydrogel optical fibers with tunable fiber diameters,and mechanical and optical propagation ***,this concept also exhibited versatility for various kinds of core-sheath functional *** wet spinning synthetic procedure and fabrication process were optimized with the rational design of the core/sheath material interface compatibility[core =poly(ethylene glycol diacrylate-co-acrylamide);sheath =Ca-alginate],optical transparency,refractive index and spinning solution *** resulting hydrogel optical fibers exhibited desirable low optical attenuation(0.18 ± 0.01 dB cm-1 with 650 nm laser light),excellent biocompatibility and tissue-like Young's modulus(＜ 2.60 MPa).The optical waveguide hydrogel fibers were successfully employed for deep-tissue cancer therapy and brain optogenetic stimulation,confirming that they could serve as an efficient versatile tool for diverse deep-tissue therapy and brain optogenetic applications.

关键词： optical waveguide hydrogel fiber deep-tissue photothermal therapy optogenetic stimulation

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Effects of carbon dioxide concentration and swine wastewater on the cultivation of Chlorella vulgaris FSP-E and bioethanol production from microalgae biomass

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Applied Energy 2024年 369卷

作者： Condor, Billriz E. de Luna, Mark Daniel G. Lacson, Carl Francis Z. Acebu, Paula Isabel G. Abarca, Ralf Ruffel M. Nagarajan, Dillirani Lee, Duu-Jong Chang, Jo-Shu Energy Engineering Program National Graduate School of Engineering University of the Philippines Diliman Quezon City Philippines Quezon City1101 Philippines Department of Chemical Engineering University of the Philippines Diliman Quezon City1101 Philippines Center of Excellence in Environmental Catalysis and Adsorption Thammasat University Pathum Thani12121 Thailand Department of Chemical Engineering and Technology Mindanao State University-Iligan Institute of Technology Iligan City9200 Philippines College of Hydrosphere Science Institute of Aquatic Science and Technology National Kaohsiung University of Science and Technology Kaohsiung City811532 Taiwan Department of Mechanical Engineering City University of Hong Kong Kowloon Tang Hong Kong Department of Chemical and Materials Engineering Tunghai University 407 Taiwan Research Center for Smart Sustainable Circular Economy Tunghai University Taichung407 Taiwan Department of Chemical Engineering National Cheng Kung University Tainan701 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Chung-Li Taiwan

The study investigated the potential of wastewater-derived microalgae as a cost-effective feedstock for bioethanol production. The influence of CO2 loading, use of swine wastewater as a nutrient source, effect of micronutrients in the cultivation media, and scale-up of Chlorella vulgaris FSP-E was conducted. Results showed that 2% CO2, 25% swine wastewater, 500 mg/L sodium nitrate, 40 mg/L K2HPO4, 75 mg/L MgSO4, and 6 mg/L citric acid were optimal for maximal biomass production, nitrate removal, and carbohydrate accumulation in BG-11 medium. The maximum biomass and carbohydrate content obtained in this study were 35-fold and 60%, respectively. Scaling up to 5 L volume was challenging due to illumination, aeration, and mixing issues. The obtained carbohydrate-rich biomass was subjected to mild sulfuric acid hydrolysis and subsequently used for bioethanol fermentation. The hydrolysate was composed solely of glucose and galactose and was converted into bioethanol within 8 h by Saccharomyces cerevisiae with an ethanol yield of 0.22 ± 0.01 g ethanol per g biomass. Further exploration of effective lighting and mixing strategies are recommended to realize economically viable microalgal biofuels. © 2024 Elsevier Ltd

关键词： Biomass

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Assessment of rare earth elements in Asejire Lake, Nigeria

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Discover Geoscience 2024年第1期2卷 1-14页

作者： Adeboye, Ayodele Christianah Omotoso, Oladele Ajiboro Akinwole, Isreal Oluwatimileyin Afolabi, Olukayode Adegoke Elabor, Isa Department of Geology and Mineral Science University of Ilorin Ilorin Nigeria Department of Chemical and Biomolecular Engineering University of Maryland College Park USA Department of Earth Sciences Ladoke Akintola University of Technology Ogbomoso Nigeria School of the Environment Florida Agriculture and Mechanical University Tallahassee USA

This study evaluated the distribution of rare earth elements (REEs) in the Asejire Reservoir, Southwest Nigeria, a region lacking comprehensive REE assessment despite the growing concern over REE contamination due to industrial and technological expansion. Using inductively coupled plasma-mass spectrometry (ICP-MS), 12 water samples were analyzed to determine REE concentrations. The total REE (∑REE) concentrations ranged from 10.35 to 13.44 μg/L. The anomalies for Cerium (Ce/Ce*), Europium (Eu/Eu*) and Gadolinium (Gd/Gd*) were 0.19–0.24, 0.18–0.24, and 0.94–1.23, respectively. These values indicate strong negative anomalies for Ce/Ce* and Eu/Eu*, while Gd/Gd* exhibited a slight positive anomaly. These results suggest that the water in the study area is relatively pristine with respect to REEs. The enrichment factor (EF) analysis showed slight enrichment/contamination (1 ≤ EF < 2) for light REEs (LREEs) and middle REEs (MREEs), while heavy REEs (HREEs) mostly showed no enrichment (EF < 1). Notably, most samples had Lanthanum (La) and Cerium (Ce) concentrations above the indicative Admissible Concentration (iAC = 2.0 μg/L) for drinking water, implying potential adverse effects from chronic ingestion. Principal component analysis (PCA) revealed that 71.2% of the variability is accounted for by the first two principal components (PC). PC1, which accounts for 61.22%, is attributed to natural inputs of REEs, while PC2, accounting for 10.51%, suggests some anthropogenic input. In conclusion, this study reveals that the Asejire Reservoir is slightly impacted by anthropogenic influences and local authorities should implement appropriate measures to prevent further deterioration.

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Porous silicon on paper sensors: Factors affecting biosensing performance 17

Porous silicon on paper sensors: Factors affecting biosensin...

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Frontiers in Biological Detection: From Nanosensors to Systems XVII 2025

作者： An, Huijin Laibinis, Paul E. Locke, Andrea K. Weiss, Sharon M. Interdisciplinary Material Science Program Vanderbilt University NashvilleTN37235 United States Department of Electrical and Computer Engineering Vanderbilt University NashvilleTN37235 United States Department of Chemical and Biomolecular Engineering Vanderbilt University NashvilleTN37235 United States Department of Chemistry Vanderbilt University NashvilleTN37235 United States Department of Biomedical Engineering Vanderbilt University NashvilleTN37235 United States

ISBN: (纸本)9781510684249

A paper-based biosensor integrating a functionalized porous silicon (PSi) membrane as the active sensing element for quantifiable protein detection has been developed. For similar short-time exposures to an analyte, improved molecular transport in PSi membranes when on paper leads to larger signal changes compared to traditional PSi films that remain on a silicon substrate. In this work, we discuss controlling the incubation time of the analyte and the overall testing time of the sensor by incorporating different combinations of wicking and absorbent paper beneath the PSi membrane. With this control, the PSi-on-paper sensor platform has the potential to serve as an effective low-cost rapid diagnostic test with highly sensitive, quantitative readout for a wide range of analytes. © 2025 SPIE.

关键词： Porous silicon

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