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Hydrogel microspheres containing dextran-based nanoparticles as novel anticancer drug delivery system

chemical and process engineering - Inzynieria Chemiczna i Procesowa 2022年第3期43卷 405-417页

作者： Kulikowska-Darlak, Aleksandra Stefanek, Agata Wasiak-Wojasińska, Iga Wiechecka-Ożdżyńska, Paulina Ciach, Tomasz Faculty of Chemical and Process Engineering Warsaw University of Technology Waryńskiego 1 Street Warsaw00-645 Poland

Developing an effective and safe cancer therapy could significantly reduce the number of deaths and improve the quality of life of treated patients. Nowadays medicine has developed a wide range of anticancer chemotherapeutics but at the same time there is a lack of effective drug delivery methods. Therefore, the development of the targeted drug delivery system which will selectively release drug into the cancer cells is a key challenge of modern medicine. The main aim of the presented research was to investigate the targeting effect of a drug delivery system based on the controlled release of dextran nanoparticles containing the anticancer drug - doxorubicin from the alginate microspheres coated with chitosan multilayers. During the research the physicochemical properties of the alginate microspheres and its stability in the physiological environment were investigated. Moreover, the kinetics of the nanoparticles with doxorubicin release from the alginate microspheres covered with chitosan multilayers was characterized, depending on the thickness of the chitosan layer. Further, the cytotoxicity study of the alginate microspheres covered with chitosan multilayer and containing nanoparticles was performed to determine the therapeutic effect of the released nanoparticles with doxorubicin on the HeLa cells during the in vitro cell culture. © 2022 Polish Academy of Sciences. All rights reserved.

关键词： Nanoparticles

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Liquefied dimethyl ether as alternative extraction solvent for high γ-oryzanol rice bran oil:Systematic HSP theory and experimental evaluation

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Journal of Bioresources and Bioproducts 2024年第4期9卷 577-591页

作者： Phannipha Daisuk Seiichi Takami Masaki Honda Motonobu Goto Chonlatep Usaku Artiwan Shotipruk Bio-Circular-Green-economy Technology&Engineering Center BCGeTECDepartment of Chemical EngineeringFaculty of EngineeringChulalongkorn UniversityBangkok 10330Thailand Department of Materials Process Engineering Graduate School of EngineeringNagoya UniversityFuro-choChikusa-kuNagoya 464-8603Japan Department of Chemistry Faculty of Science&TechnologyMeijo UniversityShiogamaguchiTempaku-kuNagoyaAichi 468-8502Japan Super Critical Technology Centre Co.Ltd. Kuwan1Mie 511-0838Japan Research Unit on Sustainable Algal Cultivation and Applications Faculty of EngineeringChulalongkorn UniversityBangkok 10330Thailand

This study aimed to systematically find an alternative solvent to replace hexane for the extraction of bio-oil with high𝛾-oryzanol content from rice bran(RB).The selection involved predicting solubility through Hansen solubility theory,experimental validation,determination of suitable extraction conditions,and comparison of oil quality with that of conventional hexane.A wide variety of solvents:subcritical water(SCW),supercritical carbon dioxide(SCCO_(2)),bio-based sol-vents(alcohols and terpenes),and liquefied dimethyl ether(LDME),were initially assessed for rice bran oil(RBO)and𝛾-oryzanol solubility using Hansen solubility *** demon-strating high solubility for both RBO and𝛾-oryzanol,including LDME,ethyl acetate,acetone,and others(alcohols and SCCO_(2))known for effective vegetable oil extraction,were selected/identified for experimental extraction *** these,LDME performed better overall,affording greater solubility and requiring less solvent,shorter duration,lower pressure,and no additional co-solvents for equivalent *** conditions for LDME extraction were identified as 30℃ with a solvent-to-sample ratio of 10 mL/g and an extraction time of 10 *** extracted with LDME and hexane displayed similar fatty acid compositions and no adverse effects on RB protein and carbohydrate structures after LDME extraction were *** study demon-strates LDME as a promising alternative to replace hexane for RBO extraction to further valorize this abundant low-cost RB residue into bio-oil and its𝛾γ-oryzanol and de-oil RB co-products.

关键词： Rice bran oil γ-oryzanol Liquefied dimethyl ether Hansen solubility sphere Fourier transform infrared

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Multiple emulsions for simultaneous active agents delivery in a skin topical application

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chemical and process engineering - Inzynieria Chemiczna i Procesowa 2021年第3期42卷 263-273页

作者： Markowska-Radomska, Agnieszka Dluska, Ewa Metera, Agata Wojcieszak, Maria Warsaw University of Technology Faculty of Chemical and Process Engineering Warynskiego 1 Warsaw00-645 Poland

Most antiseptic agents are intended for use on intact skin, e.g. for hand hygiene or skin preparation before any medical procedure. This paper presents multiple emulsion-based antiseptic agents as formulations for application to body surfaces with modified release rates. Multiple emulsions with a co-encapsulated antiseptic (phenyl salicylate - salol) and an agent preventing microorganism growth (benzoic acid) were formed in a Couette-Taylor flow apparatus. Results confirmed the possibility of the release kinetics modification while two compounds were encapsulated in the internal droplets of emulsions to control the release rates and time of the dose release. The addition of benzoic acid as a second active compound of the encapsulation process in the internal phase of double O1/W/O2 emulsion reduced the time necessary for the total release of salol triggering a two-step release. © 2021. The Author(s)

关键词： Benzoic acid

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The effect of solids on interfacial rheology and the performance of coalescence filters

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chemical and process engineering - Inzynieria Chemiczna i Procesowa 2021年第4期42卷 337-348页

作者： Krasiński, Andrzej Soltan, Lukasz Kozyrski, Jakub Warsaw University of Technology Faculty of Chemical and Process Engineering Waryńskiego 1 Warsaw00-645 Poland

The paper presents a research work on the process of emulsion separation by filtration-coalescence method in the presence of solid particles. A polyester PBT coalescence medium was used in experiments of water removal from diesel fuel. Apart from parameters representing the geometry and inherent properties of coalescence filters, the additional emulsion constituents such as surfactants and solid particles also affect the process. These constituent can cover fibres and they can also influence emulsion properties. It has been experimentally confirmed that contrary to surface active compounds, which stabilise the emulsion, the presence of specific solid particles decreased the system stability. If surface active compounds are present in the system, the influence of solid particles is different at the same concentration level depending on their type. The destabilization of emulsion due to the presence of Arizona dust was more pronounced. Although the presence of particles mitigated the effect of surfactants, their deposition in the filter media oppositely affected the coalescence process depending on solid type. Oleophilic iron oxide particles improved the separation efficiency of water from diesel fuel, while Arizona test dust had a negative impact on the separation process performance. © 2021. The Author(s)

关键词： Diesel fuels

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Energetic efficiency of mixing in a periodically reoriented Dean flow

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chemical and process engineering - Inzynieria Chemiczna i Procesowa 2021年第4期42卷 391-410页

作者： Rożeń, Antoni Kopytowski, Janusz Warsaw University of Technology Faculty of Chemical and Process Engineering Waryńskiego 1 Warszawa00-645 Poland

The energetic efficiency of mixing is studied numerically in a continuous flow mixer constructed from a sequence of alternately twisted pipe bends. Counter-rotating vortices present in the curved channels and known as Dean vortices narrow the distribution of the residence time of fluid elements and accelerate the generation of a new material surface without obstructing the main flow and increasing the risk of fouling or flow stoppage. Cyclic twisting of the pipe curvature allows for quick reorientation of Dean vortices. The reorientation induces chaotic advection in a stable three-dimensional flow and speeds up mixing. The effect of computational domain discretisation for the low and medium Reynolds numbers (20 © 2021. The Author(s)

关键词： Computational fluid dynamics

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Production and formation modelling of CaCO3 in multiphase reactions – A review

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chemical and process engineering - Inzynieria Chemiczna i Procesowa 2021年第1期42卷 15-34页

作者： Gierycz, Pawel Poświata, Artur Warsaw University of Technology Faculty of Chemical and Process Engineering ul. Waryńskiego 1 Warsaw00-645 Poland

The paper presents different approaches to the proper and accurate production and modelling (multiphase reaction) of CaCO3 formation in the most popular, different types of reactors, i.e. continuous reactor (STR – stirred tank reactors, MSMPR – mixed suspension, mixed product removal;tube reactor), a bubble column reactor and a thin film reactor. Many different methods of calcium carbonate production and their effect on the various characteristics of the product have been presented and discussed. One of the most important, from the point of view of practical applications, is the morphology and size of the produced particles as well as their agglomerates and size distribution. The size of the obtained CaCO3 particles and their agglomerates can vary from nanometers to micrometers. It depends on many factors but the most important are the conditions calcium carbonate precipitation and then stored. The experimental research was strongly aided by theoretical considerations on the correct description of the process of calcium carbonate precipitation. More than once, the correct modelling of a specific process contributed to the explanation of the phenomena observed during the experiment (i.e. formation of polyforms, intermediate products, etc.). Moreover, different methods and approaches to the accurate description of crystallization processes as well as main CFD problems has been widely reviewed. It can be used as a basic material to formulation and implementation of new, accurate models describing not only multiphase crystallization processes but also any processes taking place in different chemical reactors. © 2021 Polish Academy of Sciences. All rights reserved.

关键词： Calcium carbonate

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Removal enhancement of persistent basic fuchsin dye from wastewater using an eco-friendly, cost-effective Fenton process with sodium percarbonate and waste iron catalyst

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Environmental Science and Pollution Research 2024年第31期31卷 43673-43686页

作者： Aouni, Saoussen Imene Ghodbane, Houria Merouani, Slimane Lakikza, Imane Boublia, Abir Yadav, Krishna Kumar Djelloul, Chawki Albakri, Ghadah Shukri Elboughdiri, Noureddine Benguerba, Yacine Laboratory of Physics for Matter and Radiation Mohamed Cherif Messadia-Souk Ahras University P.O. Box 1553 Souk Ahras41000 Algeria Laboratory of Environmental Process Engineering Department of Chemical Engineering Faculty of Process Engineering University Salah Boubnider-Constantine 3 P.O. Box 72 Constantine25000 Algeria Département de Génie des Procédés Faculté de Technologie Université Ferhat ABBAS Sétif-1 Sétif19000 Algeria Faculty of Science and Technology Madhyanchal Professional University Ratibad Bhopal462044 India Environmental and Atmospheric Sciences Research Group Scientific Research Center Al-Ayen University Thi-Qar Nasiriyah64001 Iraq Laboratory of Reaction Engineering Faculty of Mechanical Engineering and Process Engineering USTHB Algiers Algeria Department of Teaching and Learning College of Education and Human Development Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Chemical Engineering Department College of Engineering University of Ha’il Ha’il81441 Saudi Arabia Chemical Engineering Process Department National School of Engineers Gabes University of Gabes Gabes6029 Tunisia Ferhat Abbas Setif 1 University Setif Algeria

Abstract: In this comprehensive investigation, we evaluate the efficacy of the Fenton process in degrading basic fuchsin (BF), a resistant dye. Our primary focus is on the utilization of readily available, environmentally benign, and cost-effective reagents for the degradation process. Furthermore, we delve into various operational parameters, including the quantity of sodium percarbonate (SPC), pH levels, and the dimensions of waste iron bars, to optimize the treatment efficiency. In the course of our research, we employed an initial SPC concentration of 0.5 mM, a pH level of 3, a waste iron bar measuring 3.5 cm in length and 0.4 cm in diameter, and a processing time of 10 min. Our findings reveal the successful elimination of the BF dye, even when subjected to treatment with diverse salts and surfactants under elevated temperatures and acidic conditions (pH below 3). This underscores the robustness of the Fenton process in purifying wastewater contaminated with dye compounds. The outcomes of our study not only demonstrate the efficiency of the Fenton process but highlight its adaptability to address dye contamination challenges across various industries. Critically, this research pioneers the application of waste iron bars as a source of iron in the Fenton reaction, introducing a novel, sustainable approach that enhances the environmental and economic viability of the process. This innovative use of recycled materials as catalysts represents a significant advancement in sustainable chemical engineering practices. Graphical abstract: (Figure presented.). © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Iron

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Toward multichannel core-shell catalysts: Utilizing templating of silica sols with SBA-15 to achieve core-shell architecture in multichannel catalysts featuring a hierarchical porous structure

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Ceramics International 2025年第16期51卷 22480-22485页

作者： Pudlo, Wojciech Golkowska, Anna Prusik, Krystian Lach, Radoslaw Department of Chemical Engineering and Process Design Silesian University of Technology Strzody 7 Gliwice Poland Department of Drug Forms Technology Faculty of Pharmacy Wroclaw Medical University Borowska 211 Wroclaw Poland Institute of Materials Engineering University of Silesia in Katowice 75 Pulku Piechoty 1A Chorzow Poland Silesian Center for Education and Interdisciplinary Research University of Silesia in Katowice 75 Pulku Piechoty 1A Chorzow Poland Department of Ceramics and Refractories AGH University of Science and Technology in Krakow Al. Mickiewicza 30 Kraków Poland

We synthesized multichannel core-shell catalysts based on SBA-15 embedded in silica with a hierarchical porous structure. The addition of SBA-15 to silica sol changed the porous structure both at the macro- and mesoscale, contributing to the generation of additional phase separation, and thus forming a core-shell structure containing SBA-15 domains surrounded by a mesoporous silica film. These novel hybrid materials, similar to their precursors, i.e., hierarchical porous materials, can be potentially applied as carriers for catalysts, drugs, or enzymes, or as flow-through (bio)chemical microreactors. © 2025

关键词： Shells (structures)

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Modelling the Effect of Co(Ii)/Sio2 Catalyst Pellet Loading for Low-Temperature Voc Abatement with Ozone

SSRN

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SSRN 2024年

作者： Machniewski, Piotr Bialowąs, Bartosz Faculty of Chemical and Process Engineering Warsaw University of Technology ul Waryńskiego 1 Warszawa00-645 Poland

Gas phase oxidation of VOCs utilising ozone can be an attractive, energetically efficient process for treating industrial exhaust gas *** work focuses on applying cobalt(II) adsorbed on silica gel pellets as the catalyst for low-temperature VOC abatement. The effect of cobalt loading on the activity of the catalyst in gas phase toluene decomposition with ozone was investigated in this work. The experiments carried out in a fixed bed reactor at the temperature of 40 ºC revealed a monotonic increase of ozone decomposition rate with cobalt loading in the absence of toluene and non-monotonic conversion rates during toluene oxidation with ozone revealing maximum rate at cobalt loading of approximately 0.6 – 0.8% Co (by mass). The proposed kinetic model of toluene oxidation with ozone over the Co(II)/SiO2 catalyst reproduces the observed trends and accurately predicts the measured conversions of both toluene and ozone. © 2024, The Authors. All rights reserved.

关键词： Catalytic oxidation

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Teaching chemical engineering in Europe - developments, dilemmas and practical examples

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chemical and process engineering - Inzynieria Chemiczna i Procesowa 2021年第4期42卷 321-335页

作者： Stankiewicz, Andrzej I. Henczka, Marek Molga, Eugeniusz Delft University of Technology Process and Energy Department Leeghwaterstraat 39 Delft2628 CB Netherlands Warsaw University of Technology Faculty of Chemical and Process Engineering ul. Waryńskiego 1 Warsaw00-645 Poland

This perspective paper focuses on the changes in teaching chemical engineering in Europe triggered by new challenges and megatrends observed in the chemical and related industries. Among the new teaching areas to address those challenges and megatrends, process intensification, digitalization and advanced materials are expected to play the most important role and are discussed in more detail. The discussion on incorporation of those new areas in the university curricula is illustrated with a comparison of educational approaches to the chemical engineering teaching at two universities - Delft University of technology and Warsaw University of technology. The aim of this paper is to focus the attention of university teachers and potential decision makers on the most important challenges for contemporary teaching of chemical engineering. © 2021. The Author(s)

关键词： Decision making

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