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Optimizing Sustainability:Exergoenvironmental Analysis of a Multi-Effect Distillation with Thermal Vapor Compression System for Seawater Desalination

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Frontiers in Heat and Mass Transfer 2024年第2期22卷 455-473页

作者： Zineb Fergani Zakaria Triki Rabah Menasri Hichem Tahraoui Meriem Zamouche Mohammed Kebir Jie Zhang Abdeltif Amrane Laboratory of Biomaterials and Transport Phenomena University of MedeaMedea26000Algeria Laboratory of Chemical Process Engineering University of Ferhat AbbasSetif19000Algeria Department of Environmental Engineering/Laboratoire de Recherche sur le Médicament et le Développement Durable(ReMeDD) University of Salah Boubnider Constantine 3El Khroub25012Algeria Research Unit on Analysis and Technological Development in Environment(URADTE-CRAPC) Bou-Ismail TipazaBP 384Algeria School of Engineering Merz CourtNewcastle UniversityNewcastle upon TyneNE17RUUK Univ Rennes Ecole Nationale Supérieure de Chimie de RennesCNRSISCR–UMR6226RennesF-35000France

Seawater desalination stands as an increasingly indispensable solution to address global water scarcity *** study conducts a thorough exergoenvironmental analysis of a multi-effect distillation with thermal vapor compression(MED-TVC)system,a highly promising desalination *** MED-TVC system presents an energy-efficient approach to desalination by harnessing waste heat sources and incorporating thermal vapor *** primary objective of this research is to assess the system’s thermodynamic efficiency and environmental impact,considering both energy and exergy *** investigation delves into the intricacies of energy and exergy losses within the MED-TVC process,providing a holistic understanding of its *** scrutinizing the distribution and sources of exergy destruction,the study identifies specific areas for enhancement in the system’s design and operation,thereby elevating its overall ***,the exergoenvironmental analysis quantifies the environmental impact,offering vital insights into the sustainability of seawater desalination *** results underscore the significance of every component in the MED-TVC system for its exergoenvironmental ***,the thermal vapor compressor emerges as pivotal due to its direct impact on energy efficiency,exergy losses,and the environmental footprint of the ***,optimizing this particular component becomes imperative for achieving a more sustainable and efficient desalination system.

关键词： Exergoenvironmental analysis MED-TVC desalination environmental impact of freshwater multi-objective optimization

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Enhancing Photocatalytic Activity and Biological Applications of TiO2 Nanoparticles Using Moringa Oleifera Leaf Extract

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Waste and Biomass Valorization 2024年第11期15卷 6523-6537页

作者： Rakkini, A. Motcha Libu, Raimands Sahaya Raison Vatin, Nikolai Ivanovich Devanesan, Sandhanasamy Selvankumar, T. Mary Arul Rosaline, L. Amala Infant Joice, J. Dixit, Saurav Lo, Huang-Mu Affiliated to Bharathidasan University Tamilnadu Tiruchirappalli620002 India Department of Chemical Engineering National Chung Cheng University Chaiyi621301 Taiwan Division of Research and Development Lovely Professional University Punjab Phagwara144401 India Chitkara Centre for Research and Development Chitkara University Himachal Pradesh Baddi174103 India Department of Physics and Astronomy College of Science King Saud University P. O. Box 2455 Riyadh11451 Saudi Arabia Biomaterials Research Unit Center for Global Health Research Saveetha Medical College and Hospitals Saveetha Institute of Medical and Technical Sciences Saveetha University Tamil Nadu Chennai602105 India Division of Research and Innovation Uttaranchal University Dehradun India Centre of Research Impact and Outcome Chitkara University Punjab Rajpura140417 India Department of Environmental Engineering and Management Chaoyang University of Technology Taichung Taiwan

The biosynthesis of nanoparticles is an important research area focused on developing innovative, cost-effective, efficient, and environmentally friendly synthesis techniques with a wide range of applications. This study employs a straightforward and practical method to produce TiO2 nanoparticles (NPs) for use in photocatalysis, antibacterial, antifungal, and antidiabetic applications. It utilizes extract-assisted biosynthesis with Moringa oleifera. To enhance the material and evaluate the impact of bioinspiration on various parameters, the resulting TiO2 NPs undergo calcination at 500 °C. Structural confirmation, bandgap analysis, and functional group studies of MO/TiO2 (Moringa oleifera/TiO2) nanoparticles are conducted using XRD, UV-DRS, FT-IR, and PL analysis. To examine the surface morphological characteristics of the anatase TiO2 nanoparticles, SEM and TEM-EDS electron microscopy analyses were accomplished. The produced TiO2 nanoparticles are also assessed for their photocatalytic and antidiabetic properties. Photocatalytic activity is determined by decolorizing methylene blue dye in the presence of sunlight, revealing that optimal conditions for complete color removal involve using 0.3 g of TiO2 and a concentration of 4 × 10− 5 M at pH 7. A total decolorization efficiency is achieved after 180 min in the presence of MO/TiO2. The biosynthesized Moringa oleifera leaf extracted TiO2 (MO/TiO2) was used for photocatalytic and biomedical applications. MO/TiO2 exhibited the best photocatalytic activity and showed maximum inhibitoin in invitro antidiabetic activity. Invivo antidiabetic activity showed the Moringa oleifera leaf-extracted TiO2 catalyst significantly reduced blood glucose levels. © The Author(s), under exclusive licence to Springer Nature B.V. 2024.

关键词： Titanium dioxide

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Systematic Biological Upgrade of a Urea Fertilizer Effluent Treatment Plant Using GPS

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Open Journal of Applied Sciences 2023年第8期13卷 1457-1477页

作者： Isyaku Ahmad Joseph T. Akintola Regina J. Patinvoh Wilson F. Ekpotu Martins C. Obialor Philemon Chukwuebuka Udom Process (Urea) Department Dangote Fertiliser Limited Lagos Nigeria Department of Research & Development Vitapur Nigeria Limited Lagos Nigeria Department of Chemical Engineering Faculty of Engineering Lagos State University Lagos Nigeria Department of Chemical & Petroleum Engineering University of Uyo Akwa Ibom Nigeria Department of Chemical Engineering Federal University of Owerri Owerri Nigeria

The use of modeling and simulation has developed into a critical tool for the sustainable management of wastewater, especially when it comes to replicating the complex biochemical procedures required for fertilizer effluent treatment, which calls for a significant amount of wastewater-related data. The biological improvement of a urea fertilizer effluent via GPS* simulation was carried out in this work using a methodical process. Using established analytical techniques, temperature, total suspended solids (TSS), biochemical oxygen demand (BOD), total phosphorus (T/), chemical oxygen demand (COD), total nitrogen (TN), total nitrate (NO₃), electric conductivity (EC), turbidity, residual chlorine, urea, NH₃, and heavy metals (Cu, Cd, Cr, Pb, Ni, and Fe) were assessed. The research revealed that the measured values from the fertilizer factory outfall effluent had high concentrations of all the physicochemical water quality indicators, with the exception of TSS, PO₄^-, SO₄^-, and NO₃^-. These concentrations are higher compared to the authorized limits or suggested values by the Federal Environmental Protection Agency (FEPA). To improve the therapy biologically, however, a modeling and simulation program (GPS-X, version 8.0) was used with the physicochemical information gathered from the studied sample. The results of the treated water simulation showed that the concentrations of BOD₅ and COD had been significantly reduced by 35% and 44%, respectively. Additionally, it was discovered that total phosphorus (TP), nitrate (N), and total nitrogen (TN) were all within the permitted FEPA limit. The results revealed good treatment performance of the wastewater with increasing concentration of acetic acid and sodium hydroxide. Hence, the results of this research work identify the need for proper treatment of fertilizer industry effluents prior to their release into the environment.

关键词： Fertilizer Wastewater Effluent Discharge Basin Outfall Basin Physiochemical Analysis GPS Modelling & Simulation

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development and characterization of a continuous ultrasound emulsification and nano-emulsion polymerization process

Tetrahedron Green Chem

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Tetrahedron Green Chem 2023年 2卷

作者： Loncke, Jonas Vancleef, Arne Dermaut, Wim Braeken, Leen Thomassen, Leen C.J. KU Leuven Department of Chemical Engineering Research Unit CIPT Campuslaan 25 Diepenbeek B-3590 Belgium R&D Chemical Process Development Agfa Septestraat 27 Mortsel 2640 Belgium

Typically, nano-emulsions are prepared in batch high-speed homogenization or ultrasound processes and polymerized afterwards in batch reactors. However, fully continuous processes have the potential to decrease production costs and energy consumption compared to batch processes. This research thus focuses on implementing ultrasound into a fully continuous emulsification and nano-emulsion polymerization process to obtain latex nano-particles from butylmethacrylate and ethylene glycol dimethacrylate. The goal of this research is to produce nano-emulsions and nano-particles with the smallest obtainable size and polydispersity in a fully continuous two-stage process. In the first stage or emulsification stage, parameters like flowrate, residence time and acoustic power are varied to influence and determine the optimal energy density. In second stage or reaction stage, residence time and reaction temperature are studied to obtain particles of monodisperse sizes. Samples produced in both stages are analysed with Dynamic Light Scattering to measure the average size and polydispersity (PdI) of the emulsion droplets and particles. Emulsification results indicate that droplet size and PdI decreases at increasing energy densities (J/ml) until 60 J/ml after which a constant droplet size of 150 nm and PdI of 0.230 are reached. Furthermore, a particle size of 50 nm and PdI of 0.080 were achieved in both batch and continuous polymerization reactors after 5 min at 85 °C. By implementing the most optimal process parameters, small emulsion droplets and particles were obtained more energy efficient in a shorter emulsification and reaction time compared to literature ultrasound assisted nano-emulsion polymerization processes. © 2023 The Authors

关键词： Continuous emulsification Nano-emulsion polymerization Nano-particles Ultrasound emulsification

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INVESTIGATIONS AND ANALYSIS OF EARTH MATERIALS TOWARDS THE developmentS IN SOME ADVANCED chemical AND CATALYTIC USES 9th

INVESTIGATIONS AND ANALYSIS OF EARTH MATERIALS TOWARDS THE D...

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9th International Conference on Advanced Materials and Systems, ICAMS 2022

作者： Aluvihara, Suresh Kalpage, C.S. Bandaranayake, P.W.S.K. Bandara, W.M.A.T. Chelaru, Ciprian University of Peradeniya Chemical and Process Engineering Department Peradeniya Sri Lanka University of Peradeniya Physics Department Peradeniya Sri Lanka University of Peradeniya Chemistry Department Peradeniya Sri Lanka The National Research & Development for Textiles and Leather - Leather and Footwear Research Institute Division Bucharest Romania

Earth materials are some sort of valuable resources with some multiples uses in some of industrial purposes and they are obtaining some economical values based upon the demand and the abundance. According to the most of research and experiments that relevant with the characteristics of solid earth materials, mainly there were obtained and disclosed some various outstanding physic-chemical characteristics of a large number of earth materials including the applications of material processing, nano-materials, composite materials and hard materials. In the existing research there were expected to characterize some selected clay varieties, a dolomite variety and a feldspar variety which are available in Sri Lanka towards the developments especially in some advanced chemical and catalytic applications. The X-ray fluorescence (XRF) spectroscopic analysis and Scanning electron microscopic (SEM) analysis were done for all of selected materials. The X-ray diffraction (XRD) analysis was done for three different selected clays and the Fourier transforms infrared (FT-IR) spectroscopic analysis was done for three different clay types and for a dolomite variety. According to the obtained results for the research, there were found the presence of at least 75% of Fe as the major element in each of clay with some other trace metallic elements such as K, Ti, Ca, Ba and Zr in such clays, kaolinite, montmorillonite and some of Fe minerals namely as muscovite and glauconite in such clays with quartz as a non-clayey mineral. There were found some higher amount of calcite in the selected dolomite with a trace amount of K and also there were found some higher K and Ca amounts presence in the selected feldspar rocks. When comparing the obtained results with past research out comes and modifications of materials, it seems that these materials will be much useful in the industrial applications such as the catalytic activities, waste water treatment applications in the removal of heavy metals d

关键词： Dolomite

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Tailoring the electronic acceptor–donor heterointerface between black phosphorus and Co_(3)O_(4) for boosting oxygen bifunctional electrocatalysis

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Chinese chemical Letters 2023年第2期34卷 284-289页

作者： Jing Zou Yilun Zou Haitao Wang Wei Wang Pingxiu Wu Arramel Jizhou Jiang Xin Li School of Chemistry and Environmental Engineering School of Environmental Ecology and Biological EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Tree Gorges LaboratoryWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and TechnologyYueyang 414006China Semiconductor Electronic Special Gas of Hubei Engineering Research Center Jingzhou 434000China Nano Center Indonesia Jl.PUSPIPTEK Tangerang SelatanBanten 15314Indonesia Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

Black phosphorus (BP) as an uprising two-dimensional material exhibits attractive potential in the field of electrocatalysis due to the inherent advantages of high carrier mobility and abundant lone pair ***,the exposed active electrons compel BP to be deactivated by oxidative ***,the electronic signature of acceptor-donor heterointerfacial interactions between BP and Co_(3)O_(4)is realized via wet ball *** preferential migration of active electrons from BP to Co_(3)O_(4)is achieved at the heterointerface since the Fermi level of BP is higher than that of Co_(3)O_(4).Such relative energetic consideration promotes reasonable oxygen electrocatalytic active ***,it significantly suppresses the oxidative degradation of ***,the resulting Co_(3)O_(4)/BP heterojunction possesses superior oxygen bifunctional electrocatalytic activity than its parent *** importantly,this work promotes an efficient route towards BP-based multifunctional catalysts.

关键词： Electronic acceptor-donor Black phosphorus Co_(3)O_(4) Charge transfer Oxygen bifunctional electrocatalysis

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Mathematical Modeling of Ozone Assisted Cerium Redox process for the Surface Removal of Stainless Steel Components Using a Static Mixer as Gas-Liquid Contactor

SSRN

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SSRN 2024年

作者： Singh, Sukhdeep Sen, Nirvik Patel, V.P. Banerjee, D. Karunakaran, Shaji Kumar, Sanjay Process Development Division Bhabha Atomic Research Centre Trombay Mumbai400085 India Homi Bhabha National Institute Anushaktinagar Mumbai400094 India Chemical Engineering Division Bhabha Atomic Research Centre Trombay Mumbai400085 India

This paper deals with a cerium based redox chemical process which is used for the surface removal and decontamination of stainless steel components arising from the operation and decommissioning of nuclear facilities. The process involves the corrosion of top metal surface (~ 10-50 µm) by highly oxidizing Ce(IV) ions to remove the entrapped radionuclides, while the reduced Ce(III) ions are continuously regenerated in-situ by ozone. In this work, a lumped parameter model, accounting for the reduction of Ce(IV) to Ce(III) by steel components and the simultaneous oxidation of Ce(III) to Ce(IV) by ozone in a static mixer, has been developed. The model is experimentally validated by carrying out a corrosion experiment at 5 L scale in ~ 0.4 M solution of Ce(IV) in 4 M HNO3 at room temperature, by using non-radioactive AISI SS304L stainless steel components of different geometries viz. plate, pipe, elbow and T-Joint with a total surface area of 348 cm2 . Using the validated model, design simulations of a pilot metal decontamination facility are carried out, to illustrate the effect of process parameters on the equilibrium Ce(IV) concentration in the loop, which is critical to component corrosion and decontamination. For a given initial cerium salt concentration, increasing gas flow rate, liquid flow rate, ozone concentration, initial nitric acid concentration and volume of solution have been found to favour a desired flat Ce(IV) concentration profile in the loop;while increasing temperature and area of components led to a decline in the equilibrium Ce(IV) concentration. Additionally, reducing acidity of nitric acid has been found to limit the treatment time of components. Furthermore, the choice of a Ce(III) or Ce(IV) salt, as a source of cerium ions, has been shown to have no effect on the corrosion of metal components in a long run, when ozone regeneration of Ce(IV) is employed. Among the components of various geometries, relatively higher corrosion rates have been obser

关键词： Stainless steel

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Strategic design and fabrication of MXenes-Ti_(3)CNCl_(2)@CoS_(2) core-shell nanostructure for high-efficiency hydrogen evolution

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Nano research 2022年第7期15卷 5977-5986页

作者： Jizhou Jiang Saishuai Bai Meiqing Yang Jing Zou Neng Li Jiahe Peng Haitao Wang Kun Xiang Song Liu Tianyou Zhai School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China College of Life and Environmental Science Hunan University of Arts and ScienceChangde 415000China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Institute of Chemical Biology and Nanomedicine(ICBN) State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

CoS_(2) is considered to be a promising electrocatalyst for hydrogen evolution reaction(HER).However,its further widespread applications are hampered by the unsatisfactory activity due to relatively high chemisorption energy for hydrogen ***,theoretical predictions of first-principles calculations reveal that the introduction of a Cl-terminated MXenes-Ti_(3)CNCl_(2) can significantly reduce the HER potential of CoS_(2)-based materials and the Ti_(3)CNCl_(2)@CoS_(2) core–shell nanostructure has Gibbs free energy of hydrogen adsorption(|ΔGH|)close to zero,much lower than that of the pristine CoS_(2) and Ti_(3)CNCl_(2).Inspired by the theoretical predictions,we have successfully fabricated a unique Ti_(3)CNCl_(2)@CoS_(2) core–shell nanostructure by ingeniously coupling CoS_(2) with a Cl-terminated MXenes-Ti_(3)CNCl_(2).Interface-charge transfer between CoS_(2) and Ti_(3)CNCl_(2) results in a higher degree of electronic localization and a formation of chemical ***,the Ti_(3)CNCl_(2)@CoS_(2) core–shell nanostructure achieves a significant enhancement in HER activity compared to pristine CoS_(2) and Ti_(3)CNCl_(2).Theoretical calculations further confirm that the partial density of states of CoS_(2) after hybridization becomes more non-localized,and easier to interact with hydrogen ions,thus boosting HER *** this work,the success of oriented experimental fabrication of high-efficiency Ti_(3)CNCl_(2)@CoS_(2) electrocatalysts guided by theoretical predictions provides a powerful lead for the further strategic design and fabrication of efficient HER electrocatalysts.

关键词： theoretical predictions Ti_(3)CNCl_(2)@CoS_(2)core-shell nanostructure electronic non-localization hydrogen evolution

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Identification of microbial metabolites that accelerate the ubiquitindependent degradation of c-Myc

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Oncology research 2023年第5期31卷 655-666页

作者： ZIYU LIU AKIKO OKANO EMIKO SANADA YUSHI FUTAMURA TOSHIHIKO NOGAWA KOSUKE ISHIKAWA KENTARO SEMBA JIANG LI XIAOMENG LI HIROYUKI OSADA NOBUMOTO WATANABE Bioprobe Application Research Unit RIKEN CSRSSaitama351-0198Japan Graduate School of Medical and Dental Sciences Tokyo Medical and Dental UniversityTokyo113-8510Japan Chemical Biology Research Group RIKEN CSRSSaitama351-0198Japan Chemical Resource Development Research Unit RIKEN CSRSSaitama351-0198Japan Molecular Structure Characterization Unit RIKEN CSRSSaitama351-0198Japan Japan Biological Informatics Consortium(JBIC) Tokyo135-8073Japan Department of Life Science and Medical Bioscience School of Advanced Science and EngineeringWaseda UniversityTokyo162-8480Japan Medical-Industrial Translational Research Center Fukushima Medical UniversityFukushima960-1295Japan Guangdong Engineering Research Center of Oral Restoration and Reconstruction Affiliated Stomatology Hospital of Guangzhou Medical UniversityGuangzhouChina KingMed School of Laboratory Medicine Guangzhou Medical UniversityGuangzhouChina Department of Pharmaceutical Sciences University of ShizuokaShizuoka422-8526Japan

Myc belongs to a family of proto-oncogenes that encode transcription *** overexpression of c-Myc causes many types of ***,we established a system for screening c-Myc inhibitors and identified antimycin A by screening the RIKEN NPDepo chemical *** specific mechanism of promoting tumor cell metastasis by high c-Myc expression remains to be *** this study,we screened approximately 5,600 microbial extracts using this system and identified a broth prepared from Streptomyces ***19-A0402 strongly inhibits c-Myc transcriptional *** purification of the hit broth,we identified compounds closely related to the aglycone of cytovaricin and had a structure similar to that of oligomycin *** to oligomycin A,the hit compounds inhibited mitochondrial complex *** mitochondria dysfunction caused by the compounds induced the production of reactive oxygen species(ROS),and the ROS activated GSK3α/βthat phosphorylated c-Myc for *** study provides a successful screening strategy for identifying natural products as potential c-Myc inhibitors as potential anticancer agents.

关键词： High-throughput screening Phosphorylation Reactive oxygen species

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Exploring uncommon Fe-oxides in non-metallic inclusions in ultra-high-strength steel

Results in Materials

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Results in Materials 2024年 23卷

作者： Rani, Ekta Gupta, Vandna K. Gyakwaa, Francis Kharbach, Mourad Singh, Harishchandra Alatarvas, Tuomas Martinelli, Anna Fabritius, Timo Huttula, Marko Nano and Molecular Systems Research Unit University of Oulu Department of Chemistry and Chemical Engineering Chalmers University of Technology Process Metallurgy Research Unit University of Oulu Circular Economy/Sustainable Solutions LAB University of Applied Sciences

Investigating non-metallic inclusions within ultra-high-strength-steel via conventional methods is a known: however, the challenge is to obtain chemical information of such inclusions at the sub-micrometer level. In this context, probing Fe-based oxide in inclusions is a vital aspect for guiding steel’ performance. The vibrational properties of sub micrometer size Fe-based oxides were investigated by Raman mapping along with chemometric analysis with the aim of probing their chemical composition. Highly contrasted Raman spectra were recorded from several inclusions embedded at different spatial locations. The observed spectral features were identified as specific markers of hematite (α-Fe₂O₃) and magnetite (Fe₃O₄). Principal Component Analysis was used to confirm the presence of these markers and potentially revealing additional patterns. Their unambiguous assignment has been inferred by comparing our experimental findings with the literature data recorded either in single crystals of iron oxides or oxyhydroxides. Micro-Raman spectroscopy is proven to be a reliable, cost-effective, and non-invasive tool for the unambiguous identification of subsurface regions of steel. © 2024

关键词： Fe-based oxides Low carbon steel Non-metallic inclusion Principal component analysis Raman mapping

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