Chemical Engineering and Processing - Process Intensification最新文献_第2页

Facile preparation and characterization of α-aluminum oxide particles by ultrasonic spray pyrolysis

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-15 DOI: 10.1016/j.cep.2025.110278

Van Doan Nguyen, Hoa Phan, The Vinh La

{"title":"Facile preparation and characterization of α-aluminum oxide particles by ultrasonic spray pyrolysis","authors":"Van Doan Nguyen, Hoa Phan, The Vinh La","doi":"10.1016/j.cep.2025.110278","DOIUrl":"10.1016/j.cep.2025.110278","url":null,"abstract":"<div><div>The microscopic morphology and purity of alumina are crucial factors in determination of its practical applications in high-tech industries such as ceramics, bioceramics, catalyst carriers, and others. In the present paper, α-Al<sub>2</sub>O<sub>3</sub> particles were produced by ultrasonic spray pyrolysis employing the Al(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O and AlCl<sub>3</sub>·6H<sub>2</sub>O precursors. The results of microscopic examinations, mapping investigation, and X-ray diffraction (XRD) patterns revealed that alumina formed separated hollow spherical particles with an averaging 0.8 -1.0 µm in size. The sizes of the experimentally acquired alumina particles were contrasted with the theoretically calculated values. The optimal parameters for alumina production such as the precursor concentration and the phase transition temperature were determined to be 1.0 M and 1223 K, respectively. Fourier transform infrared spectroscopy (FT-IR) confirmed that the γ- phase was converted to the α-Al<sub>2</sub>O<sub>3</sub> phase. In addition, energy dispersive X-ray (EDX) and X-ray fluorescence (XRF) measurements were utilized to determine the chemical composition of the alumina powder samples, which revealed that the produced α-Al<sub>2</sub>O<sub>3</sub> had purities of 99.9 and 99.8 %, respectively, at a sintering temperature of 1473 K. These results provide significant insights for industrial applications in the aforementioned sectors.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110278"},"PeriodicalIF":3.8,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643822","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

Application of the approximate mapping method and validation of the mixing evaluation method based on fractal dimension in an oscillatory baffled reactor

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-15 DOI: 10.1016/j.cep.2025.110279

Ryosuke Murotani , Takafumi Horie , Satoko Fujioka , Erika Okita , Masahiro Yasuda

{"title":"Application of the approximate mapping method and validation of the mixing evaluation method based on fractal dimension in an oscillatory baffled reactor","authors":"Ryosuke Murotani , Takafumi Horie , Satoko Fujioka , Erika Okita , Masahiro Yasuda","doi":"10.1016/j.cep.2025.110279","DOIUrl":"10.1016/j.cep.2025.110279","url":null,"abstract":"<div><div>An approximate mapping method was applied and validated to predict the mixing state of an oscillatory baffled reactor in the low oscillatory Reynolds number regime. In addition, a fractal dimension method using mapping images for mixing performance evaluation was validated. The Poincaré maps approximated by Shepard's method were employed for the predictions. The results were well-matched when comparing fluid deformation and the mixing performance with the mapping method and direct numerical calculations based on virtual particle tracing, with the relative error being small at less than 1.5%. Using the mapping method, the computational time required for CFD was reduced, and the total time for the entire process up to the evaluation of mixing performance was reduced to two-thirds. Moreover, the results of the mixing performance evaluation using the fractal dimension were consistent with those obtained from a standard method. It was shown that the mixing performance evaluation through simple image analysis, based on the mixing enhancement mechanisms of laminar flow, is feasible.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110279"},"PeriodicalIF":3.8,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679805","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

Nanotechnology meets flotation: Unveiling the potential of liquid biphasic systems

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-14 DOI: 10.1016/j.cep.2025.110277

Wei Han Foo , Shir Reen Chia , Perumal Varalakshmi , Vinod Kumar , Kit Wayne Chew

{"title":"Nanotechnology meets flotation: Unveiling the potential of liquid biphasic systems","authors":"Wei Han Foo , Shir Reen Chia , Perumal Varalakshmi , Vinod Kumar , Kit Wayne Chew","doi":"10.1016/j.cep.2025.110277","DOIUrl":"10.1016/j.cep.2025.110277","url":null,"abstract":"<div><div>Nanobubble (NB) technology has emerged as a revolutionary innovation, transforming applications ranging from wastewater treatment to drug delivery. It addresses inefficiencies in conventional methods by enhancing reaction rates, delivery mechanisms, and environmental sustainability. While liquid biphasic flotation (LBF) has been widely explored for biomolecules extraction, its efficiency is often limited by the use of conventional microbubbles or macrobubbles. This review provides a comprehensive analysis of the fundamentals of LBF, the physicochemical characteristics and generation of NBs, and their synergistic potential in enhancing flotation-based applications. We further discuss the optimal NB generation techniques most suited for biphasic flotation, highlighting membrane-based methods—where gas is introduced through a sintered disc or nanoporous membrane—as the most compatible process with LBF. This ensures a continuous flotation effect while simultaneously generating stable NBs. By merging the strengths of NBs and LBF, this fusion offers promising advancements in sustainable separation technologies. However, future research will need to focus on developing an optimized NBLBF system, addressing challenges in scalable and stable NB generation for enhancing biomolecules extraction.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110277"},"PeriodicalIF":3.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697979","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

Structural optimization of mining decanter centrifuge based on response surface method and multi-objective genetic algorithm

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-12 DOI: 10.1016/j.cep.2025.110276

Peichao Cong, Dong Zhou, Wenbin Li, Murong Deng

{"title":"Structural optimization of mining decanter centrifuge based on response surface method and multi-objective genetic algorithm","authors":"Peichao Cong, Dong Zhou, Wenbin Li, Murong Deng","doi":"10.1016/j.cep.2025.110276","DOIUrl":"10.1016/j.cep.2025.110276","url":null,"abstract":"<div><div>A significant quantity of slime water generated during coal mining poses a serious threat to the health of underground workers and the environment. The decanter centrifuge is widely employed in slime water treatment due to its high efficiency in solid-liquid separation. This paper proposes a structural optimization framework for the mine decanter centrifuge based on the Response Surface Method (RSM) and Multi-Objective Genetic Algorithm (MOGA). Firstly, a three-dimensional numerical model of the decanter centrifuge was established, and the reliability of the model was verified by experimental and theoretical analysis. Subsequently, the Box-Behnken design method and RSM were employed to construct a response surface model that links input parameters (drum half cone angle, screw pitch, and spiral blade Inclination angle) with target variables (solid phase recovery rate and overflow liquid phase solids content). The interactions between each input parameter and target variable were assessed using analysis of variance (ANOVA), which confirmed the model's effectiveness and generalization capability. Finally, MOGA was employed to optimize the centrifuge's structural parameters, resulting in an 8.16 % increase in solid recovery rate and a 35.84 % reduction in overflow liquid solid content. It offers a valuable reference for the structural optimization of decanter centrifuges in coal slurry separation.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110276"},"PeriodicalIF":3.8,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632036","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

Scaling process intensification technologies: what does it take to deploy? 推广加工强化技术：部署需要什么？

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-11 DOI: 10.1016/j.cep.2025.110275

Daria C. Boffito

引用次数: 0

Improved design and performance study of a novel fixed tube-sheet heat exchanger utilizing a fluid drainage column

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-10 DOI: 10.1016/j.cep.2025.110274

Qichao Wang , Zhihui Zhao , Jie Pan , Xiang Li , Haifeng Chen , Huanying Liu , Bingyuan Hong

{"title":"Improved design and performance study of a novel fixed tube-sheet heat exchanger utilizing a fluid drainage column","authors":"Qichao Wang , Zhihui Zhao , Jie Pan , Xiang Li , Haifeng Chen , Huanying Liu , Bingyuan Hong","doi":"10.1016/j.cep.2025.110274","DOIUrl":"10.1016/j.cep.2025.110274","url":null,"abstract":"<div><div>The carbon emissions in the oil and gas industry are generally high, against the backdrop of low oil and gas recovery rates in oil depots during the summer. This paper proposes a novel fixed tube-sheet heat exchanger with hot fluid drainage column added at the left end cover. The aim is to enhance the heat transfer performance of the heat exchanger (HE), thereby improving the recovery rate. Computational fluid dynamics (CFD) methods are employed to study the performance of the novel fixed tube-sheet heat exchanger (NFTHE). Additionally, the NFTHE is compared with the conventional fixed tube-sheet heat exchanger (FTHE) under various industrial conditions. The results indicate that under the same industrial conditions, the heat transfer rate of the NFTHE increases by 2.46 % to 5.71 %, the overall heat transfer coefficient increases by 22.7 % to 32.6 %, the shell-side heat transfer coefficient increases by 10.6 % to 25.2 %, the effectiveness shows an improvement ranging from 1.72 % to 7.92 %, and the number of transfer units increases by 16.5 % to 44.8 % compared to the FTHE. Comprehensive performance validation parameters show that the NFTHE exhibits superior performance across all metrics, providing a new approach for the design of fixed tube-sheet heat exchangers by adding structures at the end cover.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110274"},"PeriodicalIF":3.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620083","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

Micromixing performance of a static mixer with an internal triply periodic minimal surface structure

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-10 DOI: 10.1016/j.cep.2025.110264

Xinjun Yang , Xiaohan Lin , Dongxiang Wang , Fangyang Yuan , Wei Yu , Jiyun Du

{"title":"Micromixing performance of a static mixer with an internal triply periodic minimal surface structure","authors":"Xinjun Yang , Xiaohan Lin , Dongxiang Wang , Fangyang Yuan , Wei Yu , Jiyun Du","doi":"10.1016/j.cep.2025.110264","DOIUrl":"10.1016/j.cep.2025.110264","url":null,"abstract":"<div><div>This study explores TPMS-Diamond structures in static mixers to enhance mixing and reaction processes. Pressure drops were measured in the fine chemicals flow range (0.6–3 L/min), and correlations between Reynolds number, porosity, unit size, and friction factor were established. Energy dissipation rates were calculated, and micromixing performance was evaluated using the Villermaux–Dushman reaction system.The results indicated that micromixing predominantly occurred in the initial contact region, with smaller unit sizes enhancing micromixing performance. When the porosity, ε, is greater than or equal to 0.75, the local energy dissipation rate of the TPMS-Diamond structure was found to be similar to that of the Kenics mixer, yet it achieved significantly better micromixing performance. Additionally, the effects of H+ concentration, flow rate, and volume flow ratio on the micromixing performance of the TPMS-Diamond structure were analyzed. By applying experimental data and agglomeration model techniques, micromixing times for TPMS-Diamond structures with different unit sizes and porosity were determined to range from 0.15 to 1.02 ms, all shorter than those of Kenics mixers. The relationship between micromixing time and energy dissipation rate demonstrates the excellent energy efficiency of TPMS structures. These results demonstrate the substantial potential of TPMS structures in optimizing chemical reaction processes.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110264"},"PeriodicalIF":3.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620084","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

Research on the enhancement effect of ultrasonic field combined with monoclinic FeS on arsenic removal behavior

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-09 DOI: 10.1016/j.cep.2025.110266

Baoxin Liu , Qingfeng Dong , Jing Li , Zhanqing Lu , Guang Fu , Junchang Liu , Te Zhang

{"title":"Research on the enhancement effect of ultrasonic field combined with monoclinic FeS on arsenic removal behavior","authors":"Baoxin Liu , Qingfeng Dong , Jing Li , Zhanqing Lu , Guang Fu , Junchang Liu , Te Zhang","doi":"10.1016/j.cep.2025.110266","DOIUrl":"10.1016/j.cep.2025.110266","url":null,"abstract":"<div><div>Arsenic is a toxic element in industrial wastewater. The removal of arsenic by sulfide method has been a prominent research topic in the academic community. In this paper, arsenic was removed from arsenic-containing wastewater by ultrasound intensification combined with monoclinic FeS. This method avoids the common problems of H<sub>2</sub>S gas spillage and inefficiency in the sulfide method, and has the advantages of being clean and efficient. The effects of S/As molar ratio, initial temperature, reaction time and ultrasonic power on arsenic removal were studied. Under the optimum condition, the arsenic concentration was reduced from 1889 mg/L to 0.32 mg/L, and the arsenic removal rate reached 99.98 %. The precipitation after arsenic removal was characterized by X-ray diffraction (XRD), Scanning electron microscope-energy dispersive spectrometry (SEM-EDS), X-ray fluorescence spectrum analysis method (XRF) and X-ray photoelectron spectroscopy (XPS) to analyze the precipitation phase, surface morphology, element content and chemical composition. A high-speed camera was used to observe the effect of ultrasound on the kinematic behavior of monoclinic FeS.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110266"},"PeriodicalIF":3.8,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601801","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

Spinning disc technology for intensified continuous flow processing: An overview of recent progress and future prospects

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-08 DOI: 10.1016/j.cep.2025.110265

Kamelia Boodhoo

{"title":"Spinning disc technology for intensified continuous flow processing: An overview of recent progress and future prospects","authors":"Kamelia Boodhoo","doi":"10.1016/j.cep.2025.110265","DOIUrl":"10.1016/j.cep.2025.110265","url":null,"abstract":"<div><div>Continuous thin film flow on a spinning disc has attracted much attention for its enhanced mass and heat transfer, very short, controllable residence times and its ability to intensify fast, exothermic reactions. This perspective paper presents recent advancements in the spinning disc technology, focusing on more detailed film flow and mixing characterisation and quantifying key parameters such as micromixing and residence time distribution. Reactive-precipitation, polymerisations and organometallic reactions are some of the applications that have been extensively studied on the spinning disc. Application to areas of significant interest to net-zero carbon emissions such as biotechnology and biomass/biorefinery industries have most recently also demonstrated performance enhancements compared to traditional, non-intensified processes. Although several challenges remain to be overcome, future prospects of spinning disc technology are promising. The development of advanced designs of multiple stages incorporating ‘green’ electrified energy input and novel disc architectures, such as 3D printed structured and porous surfaces, to further enhance mixing, transport properties and reaction kinetics are some of the exciting prospects. The spinning disc technology also holds much promise for the less well-studied photo-activated reactions, where its dynamic thin film characteristics offer significant potentials for efficient light penetration in photocatalytic synthesis processes.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110265"},"PeriodicalIF":3.8,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of the characteristics of silica microcapsules with nanoholes on the reaction rate of calcium chloride for chemical heat pump

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-08 DOI: 10.1016/j.cep.2025.110267

Linbin Zeng , Ruri Hidema , Yuxin Tang , Aito Shimamoto , Keiko Fujioka , Hiroshi Suzuki

{"title":"Effects of the characteristics of silica microcapsules with nanoholes on the reaction rate of calcium chloride for chemical heat pump","authors":"Linbin Zeng , Ruri Hidema , Yuxin Tang , Aito Shimamoto , Keiko Fujioka , Hiroshi Suzuki","doi":"10.1016/j.cep.2025.110267","DOIUrl":"10.1016/j.cep.2025.110267","url":null,"abstract":"<div><div>An optimized-double emulsion method for preparing hollow silica microcapsules with nanoholes was developed for encapsulating calcium chloride to enable its long-term use in chemical heat pumps. The hydration/dehydration of calcium chloride was achieved by permeating water vapour through the surface holes, allowing the thermal upgrading and storage of low-temperature waste heat. The effects of the solution mass and surfactant concentration during the fabrication process on the texture of the microcapsules and thermal properties of the composites were investigated. The results demonstrated the successful encapsulation of calcium chloride in the microcapsules to occupy the entire void and complete hydration/dehydration reaction. Changing the fabrication conditions affected the diameter, shell thickness and opening fraction of microcapsules, thereby further controlling the void fraction and hole specific surface area, which were proven to be key parameters for improving heat storage density and hydration output power density. Composite microcapsules with a heat storage density of 809.1 J·g<sup>−1</sup> at a void fraction of 54.7 vol% and a power density of 0.95 W·g<sup>−1</sup> at a hole specific surface area of 0.089 μm<sup>-1</sup> and satisfactory thermal stability after 50 cycles were obtained.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110267"},"PeriodicalIF":3.8,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0