Chemical Engineering and Processing - Process Intensification最新文献

{"title":"Regeneration of bifunctional Fe/C catalyst for microwave-assisted methane pyrolysis by coke gasification with CO2","authors":"Stanisław Murgrabia,&nbsp;Robert Cherbański,&nbsp;Eugeniusz Molga,&nbsp;Andrzej Stankiewicz,&nbsp;Tomasz Kotkowski","doi":"10.1016/j.cep.2025.110421","DOIUrl":"10.1016/j.cep.2025.110421","url":null,"abstract":"<div><div>Methane pyrolysis (MP) is an attractive method for producing H₂ without emitting CO₂. However, the widespread adoption of MP is hindered by catalyst coking, which leads to catalyst deactivation. To extend catalyst lifespan, periodic regeneration is required. Based on thermodynamic calculations, CO₂ was selected as the gasifying agent, as gasification with H₂O can lead to CO₂ emissions through a secondary water-gas shift reaction. The experiments were performed in a thermogravimetric analyser coupled with a micro GC. The chemical reaction was examined within a temperature range of 880–960 °C, and CO₂ partial pressures between 851 Pa and 4412 Pa. The volume reaction model was applied to model coke gasification. Based on statistical analysis of the results, a reaction order was found to be <em>n</em> = 1.04±0.102, which aligns with the value reported in the literature. The activation energy was determined to be approximately 183 kJ/mol.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"216 ","pages":"Article 110421"},"PeriodicalIF":3.8,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144511088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of magnetohydrodynamic mixing in a viscoplastic fluid by employing cylindrical pillar electrode arrays—A numerical study","authors":"Chitradittya Barman,&nbsp;Aditya Bandopadhyay","doi":"10.1016/j.cep.2025.110408","DOIUrl":"10.1016/j.cep.2025.110408","url":null,"abstract":"<div><div>In this work, we have conducted three dimensional numerical investigations into improvement of magnetohydrodynamic (MHD) mixing in viscoplastic fluids. The proposed device employs cylindrical micropillars as electrodes to generate strong Lorentz forces, enough to promote yielding of the viscoplastic fluid. Thereafter, the generated magnetohydrodynamic flow is used to intensify the process of non-reactive and reactive mixing. The cylindrical pillar electrodes, when activated, generate micro-vortices which result in rapid transport of both non-reactive and reactive species. Numerical simulation results demonstrate the effectiveness of the pillar based MHD systems for handling of mixing in viscoplastic fluids. The results presented in this work will serve as a benchmark for the modeling and fabrication of MHD devices dedicated for mixing of viscoplastic fluids which will find applications in areas like chemical analysis, synthesis and biomedical analysis.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"216 ","pages":"Article 110408"},"PeriodicalIF":3.8,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect and mechanism of drainage measures on gas-liquid coalescence separation performance of a water mist filter","authors":"Zhiqian Sun ,&nbsp;Tianwen Wang ,&nbsp;Yijie Li ,&nbsp;Chaolei Wang ,&nbsp;Jianhua Zou ,&nbsp;Yankang Wang ,&nbsp;Yu Li ,&nbsp;Zhenbo Wang","doi":"10.1016/j.cep.2025.110424","DOIUrl":"10.1016/j.cep.2025.110424","url":null,"abstract":"<div><div>In natural gas transportation, gas-liquid coalescence plays a crucial role in preventing pipeline and equipment corrosion. However, the development of novel drainage layer structures for gas-liquid coalescence filter elements remains limited, and the impact of traditional drainage structures on filter performance is not yet well understood. In this study, an experimental platform was used to evaluate the effects of three different drainage structures on filter performance. Digital image processing techniques were employed to analyze the internal liquid distribution within the filter layers, investigating the influence of the drainage layer on liquid flow channels and elucidating its functional role in the filtration system. The experimental results indicate that the addition of the drainage structure led to a 16 % reduction in pressure drop and a 12 % improvement in separation efficiency. Furthermore, the grid-shaped drainage structure outperformed the woven net structure, demonstrating a quality factor twice as high as that of the woven net configuration. Additionally, placing the drainage layer in the middle of the filter enhances drainage efficiency. The drainage layer improves separation performance primarily by reducing the number of liquid flow channels, decreasing channel area, and increasing channel diameter.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"216 ","pages":"Article 110424"},"PeriodicalIF":3.8,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CFD simulation of channel junction configurations in microfluidic systems: Parametric analysis for sustainable heavy metal extraction and environmental remediation","authors":"Parisa Toghyani ,&nbsp;Farshad Raji ,&nbsp;Ahmad Rahbar-Kelishami","doi":"10.1016/j.cep.2025.110422","DOIUrl":"10.1016/j.cep.2025.110422","url":null,"abstract":"<div><div>The integration of liquid-liquid extraction (LLE) and microfluidic technology represents a significant advancement in separation science, particularly for environmental applications such as pollution remediation and resource recovery. This combination addresses key limitations of traditional LLE methods and offers enhanced efficiency, making it a promising approach for sustainable chemical processes. In this study, CFD simulation was conducted to extract Co (II) ions—an environmentally relevant contaminant—using di-2-ethylhexylphosphoric acid (D2EHPA) as the extractant and decane as the solvent phase in a Y-Y microchannel. The influence of various geometrical parameters, such as inlet angle (30-180°) and outlet angle (30-90°), were systematically explored to evaluate their influence on extraction performance. Additionally, Operating conditions included an aqueous phase pH of 4.4-8, an organic-to-aqueous phase flowrate ratio of 0.5-3, an initial Co (II) concentration of 5-25 mM, and an extractant concentration of 10-30 mM were assessed through extensive parametric sweeps. The study revealed that the microchannel's inlet angle significantly affected extraction efficiency, with angles increasing from 30° to 120° leading to enhanced efficiency due to improved phase mixing. The Y-shaped inlet demonstrated superior extraction performance compared to the T-shaped inlet. By analyzing simulation trends and local response surfaces, the most suitable conditions were determined: inlet angle of 132°, outlet angle of 77°, pH of 7.13, initial Co (II) concentration of 21.6 mM, extractant concentration of 27.2 mM, and flow rate ratio of 2.53. Under these conditions, an extraction efficiency of 84.46 % was achieved. These findings highlight the potential of microfluidic LLE systems for environmental applications, including the remediation of heavy metal pollution, improved separation efficiency in sustainable mining operations, and the development of eco-friendly lab-on-a-chip technologies for rapid, small-scale environmental monitoring.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"216 ","pages":"Article 110422"},"PeriodicalIF":3.8,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydroxyethyl cellulose as a multifunctional agent for integrated brine desalination, CO₂ capture, and enhanced oil recovery","authors":"Ameera F. Mohammad ,&nbsp;Aya A-H.I. Mourad ,&nbsp;Ali H. Al-Marzouqi ,&nbsp;Emmanuel Galiwango ,&nbsp;Essa G. Lwisa ,&nbsp;Jawad Mustafa","doi":"10.1016/j.cep.2025.110414","DOIUrl":"10.1016/j.cep.2025.110414","url":null,"abstract":"<div><div>This study presents a novel approach for integrating hydroxyethyl cellulose (HEC) into a sustainable framework targeting three major challenges: brine treatment, carbon dioxide (CO₂) capture, and enhanced oil recovery (EOR). Utilizing a modified Solvay process within an inert particle-spouted bed reactor, the research investigates the physicochemical interactions of HEC with high-salinity brine and CO₂ gas under controlled experimental conditions. The incorporation of HEC significantly improved CO₂ capture efficiency, reaching a maximum of 99.2 %, by enhancing carbonate precipitation and facilitating mass transfer between gaseous and aqueous phases. Simultaneously, HEC contributed to brine desalination by promoting ionic complexation and selective precipitation, achieving up to 32.4 % reduction in total salinity. Experimental measurements showed a significant reduction in brine ion concentrations including magnesium (Mg²⁺), and calcium (Ca²⁺) further validating the ion-exchange and precipitation mechanisms facilitated by the process. In addition to water treatment and gas capture capabilities, HEC-treated brine exhibited favourable interfacial tension properties. Core flooding and interfacial tension measurements demonstrated that HEC could enhance oil recovery by up to 65 % due to its ability to alter wettability and stabilize displacement fronts in porous media. These combined results highlight the multifunctionality of HEC as a bio-derived, biodegradable additive that not only addresses environmental challenges associated with brine disposal and greenhouse gas emissions but also contributes to resource recovery in petroleum operations. The outcomes support the feasibility of integrating HEC into circular economy models that connect water treatment, climate mitigation, and energy recovery. This work lays the foundation for scaling up bio-polymer-enhanced desalination and carbon capture systems for real-world applications.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"216 ","pages":"Article 110414"},"PeriodicalIF":3.8,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A state of the art treatment route of flue gases using microbubbles","authors":"Parveen Dalal,&nbsp;Sridhar Dalai,&nbsp;Snigdha Khuntia","doi":"10.1016/j.cep.2025.110418","DOIUrl":"10.1016/j.cep.2025.110418","url":null,"abstract":"<div><div>The article presents a state-of-the-art method of removal of flue gases through the incorporation of microbubbles in the wet oxidation system. The solubility of SO₂ and NO_X in water is the primary determinant for their simultaneous elimination in the wet oxidation process. SO₂ is soluble in water under specific optimal conditions, but NO_X is nearly insoluble. However, application of suitable oxidants can transform NO/NO₂ into water-soluble HNO₃. In this work, instead of expensive oxidation routes, the enhancement of flue gas mass transfer rate have been tested by incorporating microbubbles in the system. To overcome the challenge of lower NOx reactivity, Hydrogen peroxide served as the primary and only oxidant, while MBs facilitated the solubility and absorption rates of SO₂ and NO_X in water. Several mass transfer properties act as the controlling factors for the process were evaluated to showcase the effectiveness of the process. Sauter mean diameter, gas holdup, specific interfacial area, volumetric coefficient for liquid phase mass transfer, kinetic parameters, Hatta number, and thermodynamic factors were assessed to understand their contribution to the mass transfer and reaction kinetics. The microbubble-assisted H₂O₂ oxidative technique for elimination of SO₂ and NO_X was shown to be highly successful.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"216 ","pages":"Article 110418"},"PeriodicalIF":3.8,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144364739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Basil extracts obtained by green chemistry methods for cosmetic applications","authors":"Karolina Śliwa ,&nbsp;Paweł Śliwa ,&nbsp;Marek Piątkowski ,&nbsp;Nina Gałązka ,&nbsp;Joanna Kolniak-Ostek","doi":"10.1016/j.cep.2025.110415","DOIUrl":"10.1016/j.cep.2025.110415","url":null,"abstract":"<div><div>In the present study, micellar extracts of <em>Ocimum basilicum</em> L. assisted by microwaves (MAE), as well as ultrasounds (UAE), were obtained using aqueous solutions of alkyl polyglucosides (APGs) with different carbon chain lengths, i.e., capryl glucoside, lauryl glucoside, and cocoyl glucoside. Extracts properties, such as antioxidant activity, total phenolic and flavonoid contents, were measured using spectrophotometric and chromatographic methods. Generally, the determined concentration of antioxidants was higher for extracts obtained in the microwave field. The total content of polyphenols and flavonoids was the greatest when coconut glucoside was used. However, the extracts obtained with caprylic/caprylic glucoside provided optimal antioxidant properties. Hair shampoo with micellar basil extract had strong foaming properties and superior antioxidant activity compared to the base shampoo. APGs are non-ionic, biodegradable surfactants that are safe and mild to the skin so that these extracts can find a wide range of cosmetic applications.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"216 ","pages":"Article 110415"},"PeriodicalIF":3.8,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Next-generation pervaporation-assisted distillation: Recent advances in process intensification","authors":"Maria Polyakova ,&nbsp;Mirko Skiborowski","doi":"10.1016/j.cep.2025.110416","DOIUrl":"10.1016/j.cep.2025.110416","url":null,"abstract":"<div><div>Pervaporation is a well-established membrane separation process that effectively overcomes limitations of distillation due to azeotropes and distillation boundaries. The selective mass transfer of pervaporation membranes has enabled successful implementation in a variety of industries, with applications in the chemical industry, as well as the food and pharma industry, including membrane bioreactors in fermentation processes. Yet, the majority of applications in separation processes remain focused on the dehydration of aqueous-organic process streams, including biofuel and bioethanol production. Pervaporation-assisted distillation processes leverage the benefits of both technologies and exploit the resulting synergies to provide energy and cost-efficient separations, especially for azeotropic mixtures, which otherwise require rather energy intensive distillation processes, such as pressure-swing, extractive or hetero-azeotropic distillation. The current review provides an overview of recent developments that enable further process intensification of pervaporation-assisted distillation processes and provides some perspective on emerging trends that may result in a wider application of these interesting hybrid separation processes.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"216 ","pages":"Article 110416"},"PeriodicalIF":3.8,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The new choice for ultrasonic-assisted extraction of Laminaria japonica polysaccharides: a green and efficient deep eutectic solvent","authors":"Ying Yan ,&nbsp;Xufang Guan ,&nbsp;Ning Liang ,&nbsp;Longshan Zhao","doi":"10.1016/j.cep.2025.110405","DOIUrl":"10.1016/j.cep.2025.110405","url":null,"abstract":"<div><div>We established an environmentally friendly and efficient method to extract Laminaria japonica polysaccharides (LJPs) by utilizing ultrasound-assisted extraction in conjunction with deep eutectic solvents (DESs). Among the various DESs prepared, the composite DES of lactic acid and choline chloride exhibited the highest extraction rate of polysaccharides. Optimization of the extraction process was carried out using a single-factor experimental design. The highest polysaccharide yield was 33.72 %, and the ideal conditions were as follows: a liquid-solid ratio of 20 mL/g, a water content of 30 % (<em>v/v</em>), an extraction temperature of 60 °C, and a duration of 30 min, a molar ratio of 1:3. Subsequently, the response surface method was employed to further optimize the three main parameters. Moreover, the dosage was scaled up to verify the maturity and reliability of this process route, thus providing support for industrial production. Fourier transform infrared spectrometer (FT-IR) and scanning electron microscope (SEM) images confirmed the extracts had the features of polysaccharides. Concurrently, we evaluated the antioxidant activity of the LJPs, which demonstrated significant free radical scavenging capabilities. The greenness of this analytical method was evaluated by using the Green Analytical Procedure Index (ComplexGAPI), demonstrating that this method complies with the concept of sustainable development.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"216 ","pages":"Article 110405"},"PeriodicalIF":3.8,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review, challenges, and prospects of the process of alkaloid extraction from plants","authors":"Liping Liu,&nbsp;Tongchuan Suo","doi":"10.1016/j.cep.2025.110413","DOIUrl":"10.1016/j.cep.2025.110413","url":null,"abstract":"<div><div>Alkaloids are an important type of secondary metabolite in many organisms, exhibiting significant biological activity and pharmacological effects. In this review, we summarize the conventional procedure of alkaloid extraction, as well as the recent advances in the solvent-based and mechanic-based extraction methods, e.g., supercritical fluid extraction (SFE), deep eutectic solvents (DESs), microwave-assisted extraction (MAE), and ultrasound-assisted extraction (UAE). We find that the advanced techniques are mostly at the laboratory scale while the conventional methods still dominate current alkaloid production. Hence, it is quite significant to investigate how to improve the classical alkaloid extraction processes. We expect that a data-driven scheme with the utilization of process analytical technology (PAT), process intensification (PI) and process data modeling is the most feasible for the community. However, implementation of novel techniques and PAT strategy to the industrial-scale production of alkaloids still faces significant technical and regulatory challenges, and hence developing typical paradigms is crucial in the foreseeable future.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"216 ","pages":"Article 110413"},"PeriodicalIF":3.8,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}