Chemical Engineering and Processing - Process Intensification最新文献_第10页

Nanofluid induced continuous production of monodispersed plugs during biphasic liquid flow in meso-scale

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-01-25 DOI: 10.1016/j.cep.2025.110193

Kunderu Pallavi , Alex Koshy , Gargi Das , Chirodeep Bakli , Subhabrata Ray

{"title":"Nanofluid induced continuous production of monodispersed plugs during biphasic liquid flow in meso-scale","authors":"Kunderu Pallavi , Alex Koshy , Gargi Das , Chirodeep Bakli , Subhabrata Ray","doi":"10.1016/j.cep.2025.110193","DOIUrl":"10.1016/j.cep.2025.110193","url":null,"abstract":"<div><div>The study proposes a novel technique for continuous generation of monodispersed droplets during biphasic flow in mesoscale. The technique uses aqueous nanofluids to pinch-off toluene droplets during flow in a 2.38 mm diameter glass conduit. Visualisation studies over a flow rate range of 2–80 mL/min show a significant increase in plug flow range compared to water-toluene flow. The range is even higher than that reported in literature for water-toluene flow in microchannels. This is a favorable outcome as plug flow enhances rate of transport processes. Additionally, we observe an enhanced range of monodispersity (polydispersity index ≤ 1.01) compared to water-toluene flow under the same conditions. The values for critical aqueous capillary number and organic Weber number for monodispersity (<em>Ca<sub>aq</sub></em>* and <em>We<sub>org</sub></em>*) ≈ 0.024 and 7 for nanofluids and 0.01 and 2 for water. We further note the formation of inverted dispersed flow at low aqueous and moderate organic flow (<em>We<sub>org</sub></em> ≤ 8). Comparison with the flow pattern map for surfactant-toluene flow under identical flow conditions shows that the observations cannot be rationalised solely from changes in phase physical properties. We postulate interface jamming to play a significant role. A simplistic analysis shows that availability of nanoparticles exceeding 400 % of that required to cover the surface created during droplet formation ensures monodispersity under jetting at high phase flow rates. Likewise, inverted droplet flow appears when the availability of nanoparticles exceeds 100 % of that required for interface coverage and <em>We<sub>org</sub></em> ≤ 8. For higher Weber numbers, inertial forces dominate, resulting in thread flow.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"209 ","pages":"Article 110193"},"PeriodicalIF":3.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147084","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}

引用次数: 0

AI-driven parametric optimization of gas-liquid absorption for the intensification of CO2 capture under a Gas-phase pulsation condition

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-01-25 DOI: 10.1016/j.cep.2025.110183

Sanjib Roy , Chaturmukha Pattnaik , Ramesh Kumar , Shirsendu Banerjee , Jayato Nayak , Somnath Chaudhuri , Sayantan Sarkar , Moonis Ali Khan , Byong-Hun Jeon , Sankha Chakrabortty , Suraj K Tripathy

{"title":"AI-driven parametric optimization of gas-liquid absorption for the intensification of CO2 capture under a Gas-phase pulsation condition","authors":"Sanjib Roy , Chaturmukha Pattnaik , Ramesh Kumar , Shirsendu Banerjee , Jayato Nayak , Somnath Chaudhuri , Sayantan Sarkar , Moonis Ali Khan , Byong-Hun Jeon , Sankha Chakrabortty , Suraj K Tripathy","doi":"10.1016/j.cep.2025.110183","DOIUrl":"10.1016/j.cep.2025.110183","url":null,"abstract":"<div><div>Traditional CO<sub>2</sub> capture using amine-based solvents is effective but not an energy-intensive and requires frequent replenishment. This study explores enhancing CO<sub>2</sub> absorption in packed bed columns by switching to sodium hydroxide and incorporating gas phase pulsation to improve mass transfer efficiency. Optimising a CO<sub>2</sub><sub><img></sub>NaOH absorption process through its intensified volumetric mass transfer coefficient under a gas phase pulsation using artificial intelligence model is the main objective of this study. The mutual effects of pulsation amplitude, frequency, bed height, and solvent content on volumetric mass transfer coefficient was observed by Central Composite Design model of Response Surface Methodology where under an ideal frequency of 7.5 Hz, an amplitude of 18 mm, a bed height of 12 cm, and a solvent concentration of 2 N, the model attained a maximum volumetric mass transfer coefficient of 53.166 ± 0.55 s<sup>-1</sup>. This result was further validated through the Genetic Algorithm and Particle Swarm Optimisation models of Artificial Neural Networks. It revealed maximum coefficients of 54.52 ± 40 s<sup>-1</sup> and 56.12 ± 60 s<sup>-1</sup>, respectively, with marginally differing ideal parameters. This study shows that artificial intelligence can substantially optimize CO<sub>2</sub> capture processes by maximizing the volumetric mass transfer coefficient, leading to more efficient and cost-effective greenhouse gas reduction methods.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"209 ","pages":"Article 110183"},"PeriodicalIF":3.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147085","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}

引用次数: 0

Current status of electrode corrosion passivation and its mitigation strategies in electrocoagulation

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-01-25 DOI: 10.1016/j.cep.2025.110192

Ruo-shan Wang , Li-li Shan , Ze-bing Zhu , Zheng-qian Liu , Zhi-min Liao , Yu-hong Cui

{"title":"Current status of electrode corrosion passivation and its mitigation strategies in electrocoagulation","authors":"Ruo-shan Wang , Li-li Shan , Ze-bing Zhu , Zheng-qian Liu , Zhi-min Liao , Yu-hong Cui","doi":"10.1016/j.cep.2025.110192","DOIUrl":"10.1016/j.cep.2025.110192","url":null,"abstract":"<div><div>As an environmentally friendly electrochemical water treatment process, electrocoagulation has received extensive attention in recent years, with the advantages of no additional chemical injection, no secondary pollution, and low sludge generation. During electrocoagulation, the electrode is corroded and then gradually passivated, resulting in low electrocoagulation efficiency, which limits the wide application of electrocoagulation treatment. This review highlights latest detection of electrode corrosion/ passivation and its mitigation strategies as well as future research direction. We describe the method of detecting electrode passivation by electrode surface morphology and electrochemical analysis, reviews the factors affecting the operation of electrocoagulation and electrode passivation, and provides an overview of methods to mitigate passivation, such as changing the current mode, designing new electrodes, introducing Cl<sup>–</sup> into the solution and so on. In-depth research and real-time monitoring of electrode passivation, and the synergistic effect of machine learning and passivation mitigation strategies should be considered to overcome the EC development bottleneck and achieve a large-scale application in actual production.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"209 ","pages":"Article 110192"},"PeriodicalIF":3.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143225545","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}

引用次数: 0

Evaluation of stage efficiency and mass transfer performance in a spray falling film extractor

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-01-23 DOI: 10.1016/j.cep.2025.110191

Yu-Gan Zhu , Xiao-Feng Fei , Han-Zhuo Xu , Yan-Bin Li , Guang-Wen Chu , Jian-Feng Chen

{"title":"Evaluation of stage efficiency and mass transfer performance in a spray falling film extractor","authors":"Yu-Gan Zhu , Xiao-Feng Fei , Han-Zhuo Xu , Yan-Bin Li , Guang-Wen Chu , Jian-Feng Chen","doi":"10.1016/j.cep.2025.110191","DOIUrl":"10.1016/j.cep.2025.110191","url":null,"abstract":"<div><div>Higher separation requirements and stricter environmental protection regulations have put forward the development and optimization of efficient extraction equipment. Herein, a novel spray falling film extractor was designed for extraction processes with organic phase being dispersed in droplet and aqueous phase in falling film flow patterns. Tributyl phosphate (in kerosene)-acetic acid-water was used as the extraction system. The extraction performance was characterized by the stage efficiency (<em>SE</em>) and overall volumetric mass transfer coefficient (<em>K</em><sub>L</sub><em>a</em>). The <em>SE</em> and <em>K</em><sub>L</sub><em>a</em> could reach up to 98.8% and 0.288 s<sup>−1</sup>, respectively, when the resin falling film tube was utilized at the optimal operating conditions. Moreover, the falling film tube with a screw surface structure exhibited superior extraction performance compared to the falling film tube with a smooth surface. Based on the experimental results, a dimensionless equation was provided to correlate <em>K</em><sub>L</sub><em>a</em> with deviations less than ±20%. Further comparison results showed that the spray falling film extractor could provide a higher <em>K</em><sub>L</sub><em>a</em> than traditional extraction columns, which demonstrated application potential as a novel liquid-liquid extraction equipment.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"209 ","pages":"Article 110191"},"PeriodicalIF":3.8,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350881","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}

引用次数: 0

Kinetic-embedded CFD modeling of integrated steam methane reforming and limestone calcination in a fluidized bed reactor

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-01-22 DOI: 10.1016/j.cep.2025.110190

Zezhong John Li , Jong In Jeon , Arian Ebneyamini , C. Jim Lim , Naoko Ellis , John R. Grace , Jun Young Kim

{"title":"Kinetic-embedded CFD modeling of integrated steam methane reforming and limestone calcination in a fluidized bed reactor","authors":"Zezhong John Li , Jong In Jeon , Arian Ebneyamini , C. Jim Lim , Naoko Ellis , John R. Grace , Jun Young Kim","doi":"10.1016/j.cep.2025.110190","DOIUrl":"10.1016/j.cep.2025.110190","url":null,"abstract":"<div><div>The combination of limestone calcination, catalytic methane reforming, and combustion in one reactor (MRC<img>CAL) was previously proposed to achieve autothermal and hydrogen-producing sorbent regeneration for calcium-looping technology. However, this technology was only assessed using kinetic-only simulations. To further evaluate its viability, the present study developed an Eulerian-Eulerian CFD model with full reaction kinetics in a bubbling fluidized bed reactor. Three different operating parameters were studied: the inlet gas velocity, the sorbent to catalyst ratio, and the sorbent calcination extent. CFD simulations demonstrated that increasing the inlet gas velocity increased the H<sub>2</sub> production by altering the particle distribution through the bed. Decreasing the catalyst-to-sorbent ratio improved local mixing whereas the catalyst tended to locate at the bottom of the bed where an increased total solid holdup was also found. Sorbents with higher calcination extent led to a decreased CO<sub>2</sub> composition in the off-gas whilst increasing the H<sub>2</sub> composition. When compared with kinetic-only simulations of a continuous reactor, the CFD results showed a noticeable discrepancy in the gas compositions mainly due to the free gas expansion and the more rigorous calculation of the particle mixing patterns, which were not included in the kinetic simulations. The sharp differences emphasized the importance of hydrodynamics in developing novel processes.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"209 ","pages":"Article 110190"},"PeriodicalIF":3.8,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147082","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}

引用次数: 0

A novel approach for producing stable cellulose nanocrystal colloidal suspensions via hydrodynamic cavitation

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-01-22 DOI: 10.1016/j.cep.2025.110189

Sergio Luis Yupanqui-Mendoza , Isabela Karoline Dias , Júlio Cesar dos Santos , Valdeir Arantes

{"title":"A novel approach for producing stable cellulose nanocrystal colloidal suspensions via hydrodynamic cavitation","authors":"Sergio Luis Yupanqui-Mendoza , Isabela Karoline Dias , Júlio Cesar dos Santos , Valdeir Arantes","doi":"10.1016/j.cep.2025.110189","DOIUrl":"10.1016/j.cep.2025.110189","url":null,"abstract":"<div><div>Achieving stable dispersion of cellulose-based nanomaterials is critical for preserving their properties and enabling various applications. This study investigates hydrodynamic cavitation (HC) as an efficient method for dispersing cellulose nanocrystals (CNCs) produced via enzymatic hydrolysis, comparing its performance with the conventional ultrasonication (US) method. HC successfully dispersed CNCs at a concentration of 0.2 % w/v in just 10 min, maintaining excellent colloidal stability after several days with minimal changes in particle size and transparency. In contrast, CNCs dispersed using US exhibited significant agglomeration and loss of colloidal stability. Additionally, CNCs dispersed via HC demonstrated strong potential as a gelling agent, as evidenceed by their use in formulating of a transparent gel-based hand sanitizer, positioning them as efficient alternative to commercial gels. Importantly, HC achieved up to ten times greater energy efficiency than US, with substantially lower energy dissipation per kilogram of CNC. This improved efficiency highlights HC advantages for large-scale industrial applications, offering sustainable and cost-effective solutions for nanomaterial production.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"209 ","pages":"Article 110189"},"PeriodicalIF":3.8,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143146064","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}

引用次数: 0

Electrocoagulation with aluminum screen mesh electrodes for oil removal from oil-in-water emulsion

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-01-21 DOI: 10.1016/j.cep.2025.110188

Marcelly da Conceição Thomes , Igor Gomes da Silva , André Lucas Ribeiro da Silva Loures , José Rafael Capua Proveti , Cleocir José Dalmaschio , Edson C. Passamani , Paulo Sérgio da Silva Porto , Eduardo Perini Muniz

{"title":"Electrocoagulation with aluminum screen mesh electrodes for oil removal from oil-in-water emulsion","authors":"Marcelly da Conceição Thomes , Igor Gomes da Silva , André Lucas Ribeiro da Silva Loures , José Rafael Capua Proveti , Cleocir José Dalmaschio , Edson C. Passamani , Paulo Sérgio da Silva Porto , Eduardo Perini Muniz","doi":"10.1016/j.cep.2025.110188","DOIUrl":"10.1016/j.cep.2025.110188","url":null,"abstract":"<div><div>Concentric cylindrical mesh screen electrodes were effectively used in the electrocoagulation (EC) method to treat machine oil effluents in a static batch system. A 3² experimental design was used with electric voltage (V<sub>a</sub>) and polarity inversion time (t<sub>pi</sub>) as input variables. Therefore, this work focused on the optimization of power consumption, electrode mass loss, oil content, and turbidity, maintaining pH within international standards. Monitoring pH evolution provided insights into the EC kinetics. This innovative geometry achieved a low energy consumption of about (2.5 ± 0.4) W, a specific energy requirement of (2.2 ± 0.2) kWh/kg for an oil content reduction of (91 ± 4) % and (97 ± 2) % turbidity reduction. These results stemmed from factors like the fast kinetics described by a Boltzmann sigmoidal function and the lack of a passivation layer to increase power consumption. Therefore, our results bring a strong contribution to treatments in static batch processes of oil emulsions in effluents.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"209 ","pages":"Article 110188"},"PeriodicalIF":3.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143146069","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}

引用次数: 0

Comprehensive assessment of energy, exergy, and environmental impacts of lemongrass oil-diesel blend with dimethyl and diethyl ethers in agricultural diesel engines

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-01-20 DOI: 10.1016/j.cep.2025.110187

Sathiyamoorthi Ramalingam , Senthil Sampath , Thiruselvam Krishnamoorthi , Murugapoopathi Saravanamuthu , Damodharan Dillikannan

{"title":"Comprehensive assessment of energy, exergy, and environmental impacts of lemongrass oil-diesel blend with dimethyl and diethyl ethers in agricultural diesel engines","authors":"Sathiyamoorthi Ramalingam , Senthil Sampath , Thiruselvam Krishnamoorthi , Murugapoopathi Saravanamuthu , Damodharan Dillikannan","doi":"10.1016/j.cep.2025.110187","DOIUrl":"10.1016/j.cep.2025.110187","url":null,"abstract":"<div><div>The current study investigated the emission and performance characteristics along with fuel availability (exergy) and Energy of diesel, Lemongrass oil with dimethyl ether (DME) and diethyl ether (DEE) additives at volumetric ratios of 2.5 % and 5 % at different loads. The analysis is focused on shaft, cooling water, and exhaust availability. It was found that peak loads increase input availability. Peak load conditions maximized the gross work production because of fuel exergy in the combustion chamber. DEE 5 % with LGO25 had exergy efficiencies that were 69.54 % higher than diesel at 80 % load and entropy of 70.32 % lower entropy than diesel fuel 80 % load. The DEE and DME blend showed poor engine performance compared to diesel fuel as they produced higher cylinder pressure and temperature. It depicts that the LGO25 + DME 5 % fuel blend produced 33.3 % less Carbon monoxide, 6.1 % less Hydrocarbon and 28.01 % less smoke emission with respect to LGO25. The LGO25+DEE5 blends produced 11.25 % less Carbon monoxide emission, 21.05 % less Hydrocarbon emission along with 31.4 % less smoke emission against the LGO25 fueling operation. Moreover, Nitrogen Oxides (NO<sub>x</sub>) emissions were increased by 7.82 % and 26.89 % at LGO25 with DME5 % and LGO25+DEE5 % blends respectively when compared with LGO25 fueling mode.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"209 ","pages":"Article 110187"},"PeriodicalIF":3.8,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143145973","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}

引用次数: 0

The sustained release-direct precipitation preparation of vanadium pentoxide for energy utilisation from vanadium solution with high concentration of Fe and Al

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-01-20 DOI: 10.1016/j.cep.2025.110186

Liuhong Zhang , Yimin Zhang , Tao Liu , Jing Huang , Hong Liu

{"title":"The sustained release-direct precipitation preparation of vanadium pentoxide for energy utilisation from vanadium solution with high concentration of Fe and Al","authors":"Liuhong Zhang , Yimin Zhang , Tao Liu , Jing Huang , Hong Liu","doi":"10.1016/j.cep.2025.110186","DOIUrl":"10.1016/j.cep.2025.110186","url":null,"abstract":"<div><div>The direct preparation of energy-grade vanadium pentoxide from vanadium-rich solutions is hindered by the variety and high levels of impurities. To address this issue, this study utilized carbamide as a sustained release-direct precipitant to explore the parameters and mechanisms involved in vanadium precipitation. The findings indicate that with an initial pH of 0, a reaction temperature of 98 °C, a reaction duration of 6 h, and a carbamide addition ratio of 20, the vanadium precipitation efficiency reached 95.84%, and the purity of the V<sub>2</sub>O<sub>5</sub> product achieved 99.87%. This method significantly improves the purity of V<sub>2</sub>O<sub>5</sub> from the conventional ammonium salt precipitation process, which typically yields around 95%, to over 99%. Analyses of crystal phase, chemical bonding, and thermal decomposition reveal that the vanadium phase transitions from VO<sup>2+</sup> to (NH<sub>4</sub>)<sub>2y-5x</sub>V<sub>x</sub>O<sub>y</sub>, ultimately forming (NH<sub>4</sub>)<sub>2</sub>V<sub>6</sub>O<sub>16</sub>. The gradual release of the ammonium ion circumvents the issue of local overconcentration. The impurity ions did not significantly adsorb onto the surface of the precipitated crystals within a brief period. Crystals of ammonium polyvanadate can develop in perfect order without coprecipitation. The resulting ammonium polyvanadate exhibits a favourable crystal structure and smooth morphology; the purity of vanadium pentoxide exceeds 99.5%.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"209 ","pages":"Article 110186"},"PeriodicalIF":3.8,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147049","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}

引用次数: 0

Design and optimization of Tesla micromixer with asymmetrical arrangement for efficient mixing in microfluidic chip

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-01-19 DOI: 10.1016/j.cep.2025.110181

Jiangtao Li , Baojian Ma , Xiangyu Zhang , Qunxi Zhao , Runze Sun , Jiachen Zhao

{"title":"Design and optimization of Tesla micromixer with asymmetrical arrangement for efficient mixing in microfluidic chip","authors":"Jiangtao Li , Baojian Ma , Xiangyu Zhang , Qunxi Zhao , Runze Sun , Jiachen Zhao","doi":"10.1016/j.cep.2025.110181","DOIUrl":"10.1016/j.cep.2025.110181","url":null,"abstract":"<div><div>As a crucial pre-treatment part of the Micro Total Analysis Systems, micromixers are widely used in bioengineering, biochemical analysis, chemical detection and other fields. In this study, a novel Tesla micromixer (TSM) with an asymmetrical arrangement is designed. The asymmetrically arranged Tesla units generate significant vortices and localized mixing effects, enhancing the overall mixing efficiency. The effects of obstacle arrangement, geometry, and size on its mixing performance of the micromixer are investigated. The results indicate that fluids of varying concentrations are continuously compressed and collided along the TSM's fluid interface, improving the transverse diffusion effect during the mixing process. At Reynolds numbers (Re) between 30 and 100, the TSM achieves a mixing efficiency exceeding 0.7. Compared to other asymmetrically arranged Tesla micromixers, the TSM features a simpler structure and experiences less pressure drop during the mixing process. The two-way arrangement of obstacles is more effective at inducing secondary vortices and enhancing fluid mixing than the one-way arrangement, with triangular obstacles outperforming rhombic and cylindrical ones in promoting fluid mixing. With a bidirectional layout, triangular shape, and obstacle size of D=150 µm, the TSM achieves a mixing index between 0.85 and 0.99 within the Re range of 20 to 100. This research offers valuable insights into the design and optimization of the Tesla micromixer, providing essential guidance for fluid mixing in microfluidic systems.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"209 ","pages":"Article 110181"},"PeriodicalIF":3.8,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147048","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}

引用次数: 0