The development of ethylcellulose-based polymeric microsponges for the topical delivery of therapeutic agents has attracted the interest of pharmaceutical scientists around the globe in recent year...
近年来，以乙基纤维素为基础的聚合物微海绵的发展引起了全球药物学家的兴趣。
{"title":"Formulation, optimization, and in-vitro evaluation of polymeric microsponges for topical delivery of vanillin","authors":"Lalit Kumar, Himanshu Chaurasia, Gauree Kukreti, Ritesh Rana, Sumit Kumar, Mohit Chadha, Mohit Vij","doi":"10.1080/02726351.2023.2281464","DOIUrl":"https://doi.org/10.1080/02726351.2023.2281464","url":null,"abstract":"The development of ethylcellulose-based polymeric microsponges for the topical delivery of therapeutic agents has attracted the interest of pharmaceutical scientists around the globe in recent year...","PeriodicalId":19742,"journal":{"name":"Particulate Science and Technology","volume":"52 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138518658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the present investigation, vanadium nanoparticles (VNPs) were synthesized through green process that entailed the use of Azadirachta indica leaf extract from sodium metavanadate. The characteriz...
本研究以印楝叶提取物为原料，采用绿色工艺合成了纳米钒。characteriz……
{"title":"Phyto-assisted eco-friendly fabrication of haemocompatible vanadium nanoparticles using Azadirachta indica leaf extract inherent with antioxidant and anti-bacterial activity","authors":"Shreyoshi Guha, Sancharan Acharya, Thirunavukkarasu Chinnasamy","doi":"10.1080/02726351.2023.2281454","DOIUrl":"https://doi.org/10.1080/02726351.2023.2281454","url":null,"abstract":"In the present investigation, vanadium nanoparticles (VNPs) were synthesized through green process that entailed the use of Azadirachta indica leaf extract from sodium metavanadate. The characteriz...","PeriodicalId":19742,"journal":{"name":"Particulate Science and Technology","volume":"28 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138518642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-17DOI: 10.1080/02726351.2023.2282643
Minghao Chu, Yongfa Diao, Jie Jiang, Kun Han, Xiang Cheng
This study employed computational fluid dynamics-discrete phase model (CFD-DPM) to investigate the transport characteristics of transient high-temperature dust in a vertical tee duct. Utilizing the...
采用计算流体力学-离散相模型(CFD-DPM)研究了瞬态高温粉尘在垂直三通管内的输运特性。利用……
{"title":"Transient high-temperature dust diffusion and deposition in a tee duct with vortex by large eddy simulations","authors":"Minghao Chu, Yongfa Diao, Jie Jiang, Kun Han, Xiang Cheng","doi":"10.1080/02726351.2023.2282643","DOIUrl":"https://doi.org/10.1080/02726351.2023.2282643","url":null,"abstract":"This study employed computational fluid dynamics-discrete phase model (CFD-DPM) to investigate the transport characteristics of transient high-temperature dust in a vertical tee duct. Utilizing the...","PeriodicalId":19742,"journal":{"name":"Particulate Science and Technology","volume":"422 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138518616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-16DOI: 10.1080/02726351.2023.2281452
Gurpreet Kandav, Tamanna Sharma
Nanotechnology is an emerging field with diverse applications, wherein materials ranging in size from 1 to 100 nm, referred to as nanoparticles (NPs), are utilized. Traditional methods for producin...
{"title":"Green synthesis: an eco friendly approach for metallic nanoparticles synthesis","authors":"Gurpreet Kandav, Tamanna Sharma","doi":"10.1080/02726351.2023.2281452","DOIUrl":"https://doi.org/10.1080/02726351.2023.2281452","url":null,"abstract":"Nanotechnology is an emerging field with diverse applications, wherein materials ranging in size from 1 to 100 nm, referred to as nanoparticles (NPs), are utilized. Traditional methods for producin...","PeriodicalId":19742,"journal":{"name":"Particulate Science and Technology","volume":"20 ","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138518614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Droplet size is a crucial success factor for increased particle size in the agglomeration process. Thus, this work aimed to analyze the physicochemical properties of maltodextrin solutions used as ...
在团聚过程中，液滴尺寸是提高颗粒尺寸的关键因素。因此，本工作旨在分析麦芽糊精溶液的理化性质。
{"title":"Spray system characterization for evaluating particle size enlargement in fluidized bed agglomeration","authors":"Raul Favaro Nascimento, Mariana Ferreira Ávila, Osvaldir Pereira Taranto, Louise Emy Kurozawa","doi":"10.1080/02726351.2023.2279200","DOIUrl":"https://doi.org/10.1080/02726351.2023.2279200","url":null,"abstract":"Droplet size is a crucial success factor for increased particle size in the agglomeration process. Thus, this work aimed to analyze the physicochemical properties of maltodextrin solutions used as ...","PeriodicalId":19742,"journal":{"name":"Particulate Science and Technology","volume":"30 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138518617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-11DOI: 10.1080/02726351.2023.2278051
Yatindra Kumar, D. R. Kaushal
AbstractThe paper analyzed the economic transporting performance of k-epsilon turbulence models using the Eulerian two-fluid approach in transporting highly concentrated fine particulate slurry through horizontal pipelines using Kaushal et al. (Citation2005) experimental data of glass beads slurry of 125 μm mean diameter for volumetric concentration ranging 30%–52% and flow velocity ranging 2–5 m/s. The primary components of economical slurry transport are Specific Energy consumption (SEC) and pressure drop; both have been examined in the performance of different κ-ϵ models and are yet to be unlighted on these parameters. The CFD model found the excellent performance of all k-epsilon models with slightly more effectiveness in the case of the Realizable κ-ϵ model. The analyzed and validated CFD model was subsequently used in examining the parameters of slurry flow, such as the secondary phase velocity, concentration distribution, and SEC analysis for the range of fine particles 125, 150, and 212 µm. The plotted contours from CFD are useful in visualizing slurry flow parameters at intermediates inlet values for slurry inlet flow velocity ranging 2–6 m/s and inlet volumetric concentration ranging 30%–55% for fine particles. Analysis revealed that the highly concentrated fine particles slurry transported at optimum volumetric concentration range of 40–45% are economical slurry transport.Keywords: Eulerian multiphase modelhigh concentrated slurrysolid concentrationspecific energy consumption (SEC)turbulence models AcknowledgmentThe first author is highly grateful to Punjab Engineering College (Deemed to be University) Chandigarh, India, for sponsoring his doctoral studies at the Indian Institute of Technology Delhi. The authors are highly grateful to the Indian Institute of Technology Delhi for providing the required research facilities for the study.Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
{"title":"Economic particulate transport performance analysis of k-epsilon models in highly concentrated slurry through pipelines","authors":"Yatindra Kumar, D. R. Kaushal","doi":"10.1080/02726351.2023.2278051","DOIUrl":"https://doi.org/10.1080/02726351.2023.2278051","url":null,"abstract":"AbstractThe paper analyzed the economic transporting performance of k-epsilon turbulence models using the Eulerian two-fluid approach in transporting highly concentrated fine particulate slurry through horizontal pipelines using Kaushal et al. (Citation2005) experimental data of glass beads slurry of 125 μm mean diameter for volumetric concentration ranging 30%–52% and flow velocity ranging 2–5 m/s. The primary components of economical slurry transport are Specific Energy consumption (SEC) and pressure drop; both have been examined in the performance of different κ-ϵ models and are yet to be unlighted on these parameters. The CFD model found the excellent performance of all k-epsilon models with slightly more effectiveness in the case of the Realizable κ-ϵ model. The analyzed and validated CFD model was subsequently used in examining the parameters of slurry flow, such as the secondary phase velocity, concentration distribution, and SEC analysis for the range of fine particles 125, 150, and 212 µm. The plotted contours from CFD are useful in visualizing slurry flow parameters at intermediates inlet values for slurry inlet flow velocity ranging 2–6 m/s and inlet volumetric concentration ranging 30%–55% for fine particles. Analysis revealed that the highly concentrated fine particles slurry transported at optimum volumetric concentration range of 40–45% are economical slurry transport.Keywords: Eulerian multiphase modelhigh concentrated slurrysolid concentrationspecific energy consumption (SEC)turbulence models AcknowledgmentThe first author is highly grateful to Punjab Engineering College (Deemed to be University) Chandigarh, India, for sponsoring his doctoral studies at the Indian Institute of Technology Delhi. The authors are highly grateful to the Indian Institute of Technology Delhi for providing the required research facilities for the study.Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.","PeriodicalId":19742,"journal":{"name":"Particulate Science and Technology","volume":"12 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135087080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-06DOI: 10.1080/02726351.2023.2269403
Jiapeng Yan, Hui Dong, Wenchang Wu
AbstractSpray pyrolysis of magnesium nitrate is a way to prepare magnesium oxide solid particles. The gas–solid flow process after the generation of solid particles inside the pyrolysis furnace was studied in this article. Six different inlet modes of hot-carrier gas were designed, and the hot-carrier gas enters the pyrolysis furnace at the same flow rate through the six different inlet modes. The influence of varying inlet methods on the actual running distance of gas flow and the particle sedimentation rate was deeply studied in this article. The longer the distance the hot-carrier gas runs in the pyrolysis furnace, the more conducive it is to full contact with the material. The higher the particle settling rate, the more magnesium oxide particles are collected in the pyrolysis furnace. ANSYS Fluent was used for numerical simulation in this study. The results indicate that when using a tangential inlet, the actual running distance of the hot-carrier gas in the pyrolysis furnace is longer than that of the normal inlet. The actual running distance of the thermal carrier gas at the three tangential inlets is 46.5 m, and that at a single normal inlet is 24.7 m. The former is 88% more than the latter. The sedimentation rate of solid particles at three tangential inlets is 32.24%, and that at a single normal inlet is 12.06%. The former is 167% higher than the latter. The three tangential inlet mode is the best way to increase the actual running distance of the hot-carrier gas and improve the solid particle settling rate in the pyrolysis furnace. The pyrolysis furnace with multiple tangential inlets has two advantages. On the one hand, increasing the running distance of the hot-carrier gas in the furnace is conducive, thereby making the contact between the hot-carrier gas and the material more sufficient. On the other hand, it can increase the capture rate of product particles, improve the product yield, and reduce the dust content of pyrolysis tail gas.Keywords: Magnesium nitratenumerical simulationpyrolysis furnacespray pyrolysis Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors would like to acknowledge the financial support for this was provided by the National Key R&D Program of China’s ‘Technologies and Integrated Application of Magnesite Waste Utilization for High-Valued Chemicals and Materials’ (2020YFC1909303).
{"title":"Influence of different inlet modes on hot carrier gas flow in magnesium nitrate pyrolysis furnace","authors":"Jiapeng Yan, Hui Dong, Wenchang Wu","doi":"10.1080/02726351.2023.2269403","DOIUrl":"https://doi.org/10.1080/02726351.2023.2269403","url":null,"abstract":"AbstractSpray pyrolysis of magnesium nitrate is a way to prepare magnesium oxide solid particles. The gas–solid flow process after the generation of solid particles inside the pyrolysis furnace was studied in this article. Six different inlet modes of hot-carrier gas were designed, and the hot-carrier gas enters the pyrolysis furnace at the same flow rate through the six different inlet modes. The influence of varying inlet methods on the actual running distance of gas flow and the particle sedimentation rate was deeply studied in this article. The longer the distance the hot-carrier gas runs in the pyrolysis furnace, the more conducive it is to full contact with the material. The higher the particle settling rate, the more magnesium oxide particles are collected in the pyrolysis furnace. ANSYS Fluent was used for numerical simulation in this study. The results indicate that when using a tangential inlet, the actual running distance of the hot-carrier gas in the pyrolysis furnace is longer than that of the normal inlet. The actual running distance of the thermal carrier gas at the three tangential inlets is 46.5 m, and that at a single normal inlet is 24.7 m. The former is 88% more than the latter. The sedimentation rate of solid particles at three tangential inlets is 32.24%, and that at a single normal inlet is 12.06%. The former is 167% higher than the latter. The three tangential inlet mode is the best way to increase the actual running distance of the hot-carrier gas and improve the solid particle settling rate in the pyrolysis furnace. The pyrolysis furnace with multiple tangential inlets has two advantages. On the one hand, increasing the running distance of the hot-carrier gas in the furnace is conducive, thereby making the contact between the hot-carrier gas and the material more sufficient. On the other hand, it can increase the capture rate of product particles, improve the product yield, and reduce the dust content of pyrolysis tail gas.Keywords: Magnesium nitratenumerical simulationpyrolysis furnacespray pyrolysis Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors would like to acknowledge the financial support for this was provided by the National Key R&D Program of China’s ‘Technologies and Integrated Application of Magnesite Waste Utilization for High-Valued Chemicals and Materials’ (2020YFC1909303).","PeriodicalId":19742,"journal":{"name":"Particulate Science and Technology","volume":"17 s1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135590042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-01DOI: 10.1080/02726351.2023.2273889
Lei Zhang, You Zhou, Qiaorui Si, Ruijie Zhao, Weidong Shi, Desheng Zhang
AbstractCoarse particle-laden flows in inclined pipes are commonly encountered in a wide range of industrial processes. A fully coupled CFD-DEM model considering various fluid-particle interphase forces and turbulence-particle interactions is used to simulate coarse particles transported in inclined pipes. The energy dissipation is calculated from both the macro and micro perspectives. The effects of pipe’s inclination angle, particle concentration, conveying speed and particle diameter on the hydraulic transport characteristics and the energy dissipations are analyzed. The results showed that, with the increase in inclination angle, the deposited particles were gradually dispersed. Pressure drop and energy dissipation displayed a peak at 60°. Both the parameters increased with the increases in particle concentration and conveying speed in 60° inclined pipe. The energy dissipation was mainly due to the turbulent dissipation, wall friction, mean velocity field and particles’ gravity. The results further showed that the modulations in the fluid due to particle distribution could significantly change the energy dissipation caused by the fluctuating velocity, thus resulting in the maximum pressure drop and energy dissipation at 60°. The particle-fluid energy dissipation increased almost linearly with the increase in conveying speed, while it varied nonlinearly with the increase in inclination angle and particle parameters.Keywords: Liquid-solid flowCFD-DEM methodenergy dissipationcoarse particle-laden flowinclined pipe AcknowledgementsThe authors are grateful for the financial support provided by the National Natural Science Foundation of China, Key R & D Projects in Jiangsu Province and Jiangsu Provincial Science Fund for Distinguished Young Scholars.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors are grateful for the financial support provided by the National Natural Science Foundation of China [Grant No.: 52176038 and 51979125], Key R & D Projects in Jiangsu Province [Grant No.: BE2021073] and Jiangsu Provincial Science Fund for Distinguished Young Scholars [Grant No. BK20211547].
{"title":"Coarse particle-laden flows and energy dissipation in inclined hydraulic conveying pipes","authors":"Lei Zhang, You Zhou, Qiaorui Si, Ruijie Zhao, Weidong Shi, Desheng Zhang","doi":"10.1080/02726351.2023.2273889","DOIUrl":"https://doi.org/10.1080/02726351.2023.2273889","url":null,"abstract":"AbstractCoarse particle-laden flows in inclined pipes are commonly encountered in a wide range of industrial processes. A fully coupled CFD-DEM model considering various fluid-particle interphase forces and turbulence-particle interactions is used to simulate coarse particles transported in inclined pipes. The energy dissipation is calculated from both the macro and micro perspectives. The effects of pipe’s inclination angle, particle concentration, conveying speed and particle diameter on the hydraulic transport characteristics and the energy dissipations are analyzed. The results showed that, with the increase in inclination angle, the deposited particles were gradually dispersed. Pressure drop and energy dissipation displayed a peak at 60°. Both the parameters increased with the increases in particle concentration and conveying speed in 60° inclined pipe. The energy dissipation was mainly due to the turbulent dissipation, wall friction, mean velocity field and particles’ gravity. The results further showed that the modulations in the fluid due to particle distribution could significantly change the energy dissipation caused by the fluctuating velocity, thus resulting in the maximum pressure drop and energy dissipation at 60°. The particle-fluid energy dissipation increased almost linearly with the increase in conveying speed, while it varied nonlinearly with the increase in inclination angle and particle parameters.Keywords: Liquid-solid flowCFD-DEM methodenergy dissipationcoarse particle-laden flowinclined pipe AcknowledgementsThe authors are grateful for the financial support provided by the National Natural Science Foundation of China, Key R & D Projects in Jiangsu Province and Jiangsu Provincial Science Fund for Distinguished Young Scholars.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors are grateful for the financial support provided by the National Natural Science Foundation of China [Grant No.: 52176038 and 51979125], Key R & D Projects in Jiangsu Province [Grant No.: BE2021073] and Jiangsu Provincial Science Fund for Distinguished Young Scholars [Grant No. BK20211547].","PeriodicalId":19742,"journal":{"name":"Particulate Science and Technology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135270665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-01DOI: 10.1080/02726351.2023.2274903
Oluwatoyin Joseph Gbadeyan, Bruce Sithole, Sarp Adali, Glen Bright
AbstractThis study uses the optimal (custom) design to focus on the supermasscolloider wet milling process for synthesizing calcium carbonate nanoparticles from the Achatina Fulica using the optimal (custom) design. The snail shell particle size of 150 μm from dry milling was wet milled to get smaller particle sizes. The response surface design method was used to investigate the effect of independent parameters such as consistency (amount of microparticle loading in calcium carbonate suspension) and the number of runs on the particle size of calcium carbonate produced using a supermasscolloider. Results show that the microparticle loading in calcium carbonate suspension and the number of runs significantly affected the synthesized particles. The increase in microparticle loading reduced the effectiveness of the supermasscolloider blade, resulting in the production of particle sizes ranging from 21- to 40 nm. A higher number of runs with a smaller loading of microparticles in calcium carbonate suspension offered a fine particle size of 21.30 nm. The experimental data quartic polynomial models gave a coefficient of determination (R2) of 0.92. The optimum milling runs of 750 and 1% consistency microparticle loading produced a calcium carbonate nanoparticle size of 21 nm. This technique has shown that calcium carbonate nanoparticles can be produced at low cost, at less period, with low agglomeration from Achatina Fulica shell using supermasscolloider.Keywords: Achatina fulica shellparticle sizenano-CaCo3supermasscolloidermilling processdesign expect AcknowledgmentsThe authors want to acknowledge the University of KwaZulu-Natal, where this research was conducted and that the abstract presented at PolyScience2022, having the same title as this manuscript, is entirely different from the result reported in this study. The study presented was a pilot study toward achieving the result reported in this study.Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementThe authors want to declare that the data reported in this article can be deposited in a repository.
{"title":"Process optimization of nano-calcium carbonate produced from snail shell using supermasscollider","authors":"Oluwatoyin Joseph Gbadeyan, Bruce Sithole, Sarp Adali, Glen Bright","doi":"10.1080/02726351.2023.2274903","DOIUrl":"https://doi.org/10.1080/02726351.2023.2274903","url":null,"abstract":"AbstractThis study uses the optimal (custom) design to focus on the supermasscolloider wet milling process for synthesizing calcium carbonate nanoparticles from the Achatina Fulica using the optimal (custom) design. The snail shell particle size of 150 μm from dry milling was wet milled to get smaller particle sizes. The response surface design method was used to investigate the effect of independent parameters such as consistency (amount of microparticle loading in calcium carbonate suspension) and the number of runs on the particle size of calcium carbonate produced using a supermasscolloider. Results show that the microparticle loading in calcium carbonate suspension and the number of runs significantly affected the synthesized particles. The increase in microparticle loading reduced the effectiveness of the supermasscolloider blade, resulting in the production of particle sizes ranging from 21- to 40 nm. A higher number of runs with a smaller loading of microparticles in calcium carbonate suspension offered a fine particle size of 21.30 nm. The experimental data quartic polynomial models gave a coefficient of determination (R2) of 0.92. The optimum milling runs of 750 and 1% consistency microparticle loading produced a calcium carbonate nanoparticle size of 21 nm. This technique has shown that calcium carbonate nanoparticles can be produced at low cost, at less period, with low agglomeration from Achatina Fulica shell using supermasscolloider.Keywords: Achatina fulica shellparticle sizenano-CaCo3supermasscolloidermilling processdesign expect AcknowledgmentsThe authors want to acknowledge the University of KwaZulu-Natal, where this research was conducted and that the abstract presented at PolyScience2022, having the same title as this manuscript, is entirely different from the result reported in this study. The study presented was a pilot study toward achieving the result reported in this study.Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementThe authors want to declare that the data reported in this article can be deposited in a repository.","PeriodicalId":19742,"journal":{"name":"Particulate Science and Technology","volume":"47 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135271460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractTo improve the uniformities of the flow distributions in radial beds, different design methods for conical channels were developed, that is, proportional method, traditional linear method for minimizing the pressure difference between two ends of the channel, newly proposed improved linear method for minimizing the pressure axial variation in the whole channel, and improved multi-segment linear method that divide the channel into multi-segments with different inclination angles. The flow fields under different design methods and gas flow rates are then investigated by numerical simulation. The designation of the angle of the conical channel is particularly significant. Compared to the original structure, the proportional method has difficulty obtaining a proper inclination angle, whose inhomogeneity indices of the distributions of pressure drop ηp and gas velocity ηv may increase or decrease. The traditional linear method has lower inhomogeneity indices, for example, ηv will decrease by ≥7.02%, which denotes more uniform flow distributions, while the improved linear and multi-stage linear methods have the lowest inhomogeneity indices, for example, ηv will decrease by ≥12.12 and 13.60%, respectively. Besides, the latter two methods have good adaptability and robustness to fluctuations in the gas flow rate.HIGHLIGHTSTwo new design methods of conical channel are proposed.Inhomogeneity indices are introduced to quantify the uniformity of flow distribution.Robustness of different design methods are evaluated.Keywords: Centrifugal radial bednumerical simulationstructural optimizationconical channelinhomogeneity indices Authors’ ContributionHaonan Xu: Investigation, Writing-original draft. Qinchuan Zhang: Data curation. Ruojin Wang: Writing-review, Supervision. Dewu Wang: Resources. Meng Tang: Writing-review. Shaofeng Zhang: Writing- review.Disclosure StatementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The authors declare no financial interests/personal relationships which may be considered as potential competing interests.Additional informationFundingThe authors would like to thank the Programs of Natural Science Foundation of Hebei Province, China(B2021202022, B2022202003) for funding and support.
{"title":"Theoretical analysis and numerical simulation study on the structural optimization of conical channels in the center tube of a centrifugal radial bed","authors":"Haonan Xu, Qinchuan Zhang, Ruojin Wang, Dewu Wang, Shaofeng Zhang","doi":"10.1080/02726351.2023.2271430","DOIUrl":"https://doi.org/10.1080/02726351.2023.2271430","url":null,"abstract":"AbstractTo improve the uniformities of the flow distributions in radial beds, different design methods for conical channels were developed, that is, proportional method, traditional linear method for minimizing the pressure difference between two ends of the channel, newly proposed improved linear method for minimizing the pressure axial variation in the whole channel, and improved multi-segment linear method that divide the channel into multi-segments with different inclination angles. The flow fields under different design methods and gas flow rates are then investigated by numerical simulation. The designation of the angle of the conical channel is particularly significant. Compared to the original structure, the proportional method has difficulty obtaining a proper inclination angle, whose inhomogeneity indices of the distributions of pressure drop ηp and gas velocity ηv may increase or decrease. The traditional linear method has lower inhomogeneity indices, for example, ηv will decrease by ≥7.02%, which denotes more uniform flow distributions, while the improved linear and multi-stage linear methods have the lowest inhomogeneity indices, for example, ηv will decrease by ≥12.12 and 13.60%, respectively. Besides, the latter two methods have good adaptability and robustness to fluctuations in the gas flow rate.HIGHLIGHTSTwo new design methods of conical channel are proposed.Inhomogeneity indices are introduced to quantify the uniformity of flow distribution.Robustness of different design methods are evaluated.Keywords: Centrifugal radial bednumerical simulationstructural optimizationconical channelinhomogeneity indices Authors’ ContributionHaonan Xu: Investigation, Writing-original draft. Qinchuan Zhang: Data curation. Ruojin Wang: Writing-review, Supervision. Dewu Wang: Resources. Meng Tang: Writing-review. Shaofeng Zhang: Writing- review.Disclosure StatementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The authors declare no financial interests/personal relationships which may be considered as potential competing interests.Additional informationFundingThe authors would like to thank the Programs of Natural Science Foundation of Hebei Province, China(B2021202022, B2022202003) for funding and support.","PeriodicalId":19742,"journal":{"name":"Particulate Science and Technology","volume":"2 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135325881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：