Chemical Engineering Research & Design最新文献_第7页

Spouted bed reactors: Trends, gaps and possible pathways for scale-up 喷淋床反应器：趋势、差距和扩大规模的可能途径

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-01 DOI: 10.1016/j.cherd.2025.08.036

Cristina Moliner , Ziliang Wang , Massimo Curti , Elisabetta Arato

引用次数: 0

A comprehensive study of calcium dissolution kinetics from recycled concrete fines: Experimental and modeling insights 再生混凝土细粒钙溶解动力学的综合研究：实验和建模见解

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-09-01 DOI: 10.1016/j.cherd.2025.08.033

Bourouina Amine , Tollet Malo , Gagniere Emilie , Lebaz Noureddine , Chabanon Elodie , Agusti Géraldine , Delavernhe Laure , Poillot Julien , Barnes-Davin Laury , Edouard David

{"title":"A comprehensive study of calcium dissolution kinetics from recycled concrete fines: Experimental and modeling insights","authors":"Bourouina Amine , Tollet Malo , Gagniere Emilie , Lebaz Noureddine , Chabanon Elodie , Agusti Géraldine , Delavernhe Laure , Poillot Julien , Barnes-Davin Laury , Edouard David","doi":"10.1016/j.cherd.2025.08.033","DOIUrl":"10.1016/j.cherd.2025.08.033","url":null,"abstract":"<div><div>This study quantifies calcium dissolution kinetics from Recycled Concrete Fines (RCFs), a key step in the indirect CO<sub>2</sub> mineral carbonation. RCFs were characterized prior to leaching using XRD, SEM, XRF, BET, and laser diffraction techniques. Batch leaching experiments were performed using a Design of Experiments (DoE) approach to investigate the effects of particle size (0–4 mm), initial pH (2−7), and solid-to-liquid ratio (25–150 g/L) on calcium release kinetics. Calcium dissolution rate increased with decreasing particle size and pH, and with increasing solid-to-liquid ratio. XRD and SEM analyses revealed selective leaching of cementitious phases (portlandite, ettringite, hemicarboaluminate, and amorphous C-S-H), while inert aggregates remained unaffected. A mechanistic core-shell dissolution model was developed, representing RCFs particles as inert cores surrounded by reactive shells composed of hydrated calcium-rich cement phases. The model uses a single apparent rate constant (k<sub>obs</sub>) to integrate surface reaction, internal diffusion, and external mass transfer. The reactive surface area was dynamically updated using BET data and the evolving mass of cementitious phases. The model closely reproduced experimental data across all tested conditions (R² > 0.93). The variation of k<sub>obs</sub> across operating conditions reflects transitions between different rate-limiting steps, ranging from external mass transfer to surface reaction control.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"221 ","pages":"Pages 610-626"},"PeriodicalIF":3.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931600","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 model for the simulation of cell respiration in a mammalian cell culture process in an aerated stirred bioreactor 在曝气搅拌生物反应器中模拟哺乳动物细胞培养过程中细胞呼吸的新模型

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-08-31 DOI: 10.1016/j.cherd.2025.08.041

Roya Jamshidian , James Scully , Harry E.A. Van den Akker

{"title":"A novel model for the simulation of cell respiration in a mammalian cell culture process in an aerated stirred bioreactor","authors":"Roya Jamshidian , James Scully , Harry E.A. Van den Akker","doi":"10.1016/j.cherd.2025.08.041","DOIUrl":"10.1016/j.cherd.2025.08.041","url":null,"abstract":"<div><div>The cell respiration process of a Chinese Hamster Ovary (CHO) cell culture in a large-scale aerated and stirred bioreactor was modelled and simulated by using M-Star’s LES software. The simulation set-up was first validated with no cells present. The volume-averaged volumetric mass transfer coefficient (<span><math><mrow><msub><mrow><mi>k</mi></mrow><mrow><mi>L</mi></mrow></msub><mi>a</mi></mrow></math></span>) and dissolved O<sub>2</sub> (DO, %) plots are in good agreement with experimental data. Then, the cells were added to the simulation hypothetically by defining a reaction that couples the O<sub>2</sub> consumption rate to the CO<sub>2</sub> production rate. A controller was set on the pure O<sub>2</sub> sparger to control the DO in the tank. Some simplifying assumptions were made such that only the CO<sub>2</sub> variations as a result of the cell respiration were modelled. The simulations were run on GPUs for almost one month to find how the dissolved O<sub>2</sub> and CO<sub>2</sub> concentrations evolve with time. The average rates of O<sub>2</sub> transfer and consumption as well as of CO<sub>2</sub> production and absorption look qualitatively correct and are in good agreement with the limited validation data available. The effect of varying the Viable Cell Density (VCD) was investigated as well. Finally, the local dissolved CO<sub>2</sub> concentration data were used to calculate local and averaged partial pressures of CO<sub>2</sub> (pCO<sub>2</sub>) which remained well within the suggested range of 20–80 mmHg reported by Mostafa and Gu (2003) and Xing et al. (2017). Overall, the simulation approach showed great potential in capturing the local heterogeneities in dissolved O<sub>2</sub> and CO<sub>2</sub> concentrations.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 251-269"},"PeriodicalIF":3.9,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061227","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

CFD study on the interplay between mixing angles and swirl-inducing inlets of a static micromixer: From vortex to engulfment flow 静态微混合器混合角与诱导涡入口相互作用的CFD研究：从涡旋流到吞噬流

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-08-29 DOI: 10.1016/j.cherd.2025.08.034

Chuan-Chieh Liao , Kuang C. Lin

{"title":"CFD study on the interplay between mixing angles and swirl-inducing inlets of a static micromixer: From vortex to engulfment flow","authors":"Chuan-Chieh Liao , Kuang C. Lin","doi":"10.1016/j.cherd.2025.08.034","DOIUrl":"10.1016/j.cherd.2025.08.034","url":null,"abstract":"<div><div>Driven by the goal of lowering the critical Reynolds number for the transition from vortex to engulfment flow in passive micro mixers, this research employs 3-D computational fluid dynamics to analyze the impact of geometric features. Specifically, we examine mixing angles and vortex generator placements within a micro T-mixer framework (100 ×100 μm<sup>2</sup> inlet, 200 ×100 μm<sup>2</sup> outlet and 3000-μm mixing length). By systematically varying the mixing angle from 0° to 120° at Reynolds numbers of 50, 100 and 150 (within the vortex flow regime), we determine that the 105° angle is the optimal condition for facilitating the transition to engulfment flow. Furthermore, a comprehensive analysis of 24 vortex generator placements at the inlets reveals that a symmetric placement near the mixer corners, with enlarged horizontal offsets, successfully induces engulfment flow at a Reynolds number of 150. Finally, the combined effect of the optimized mixing angle and vortex generator placement results in a substantial increase in engulfment flow and performance index.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 352-361"},"PeriodicalIF":3.9,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099478","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

Synthesis of higher alcohols from syngas: exploring the parameter space and conceptual process design 合成气合成高级醇：参数空间探索及概念工艺设计

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-08-29 DOI: 10.1016/j.cherd.2025.08.038

Atte Aho , Marjut Suomalainen , Anssi Peuronen , Hannu I. Mikkonen , Niko Heikkinen , Päivi Mäki-Arvela , Irina Simakova , Kari Eränen , Mika Lastusaari , Juha Lehtonen , Dmitry Yu. Murzin

{"title":"Synthesis of higher alcohols from syngas: exploring the parameter space and conceptual process design","authors":"Atte Aho , Marjut Suomalainen , Anssi Peuronen , Hannu I. Mikkonen , Niko Heikkinen , Päivi Mäki-Arvela , Irina Simakova , Kari Eränen , Mika Lastusaari , Juha Lehtonen , Dmitry Yu. Murzin","doi":"10.1016/j.cherd.2025.08.038","DOIUrl":"10.1016/j.cherd.2025.08.038","url":null,"abstract":"<div><div>Different reaction conditions were evaluated in the synthesis of higher alcohols over an 11%-CuFeCoK/SiO<sub>2</sub> catalyst. The temperature range tested was 250 to 300 °C, pressure 10 to 30bar, and the gas hourly space velocity of 1000 to 3000mLh<sup>-1</sup>g<sub>cat</sub><sup>-1</sup> all under a constant H<sub>2</sub>:CO ratio of 2. At low CO conversions it was possible to achieve high selectivity to alcohols, while at high conversions side reactions forming CO<sub>2</sub> and alkanes became more dominating. Based on the experimental work, conceptual process design for alcohol production was conducted considering the main product, the aqueous alcohol mixture, and a gaseous by-product. The composition of the gaseous by-product had a H<sub>2</sub>:CO molar ratio of 2, making it suitable for downstream Fischer-Tropsch and/or methanol synthesis, and a low content of other compounds. Due to high alcohol selectivity only at low CO conversion, recycling of the gases was taken into account in the conceptual process design and it was found that by recycling 98% of the absorbed CO<sub>2</sub> and 70% of the gaseous by-products a 50% electricity demand and 20% reactor volume decrease could be achieved.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996984","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

Optimized synthesis and adsorption efficiency of magnetic spinel CuFe₂O₄ for dye removal from aqueous solutions 磁性尖晶石CuFe₂O₄的合成及吸附效果优化

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-08-29 DOI: 10.1016/j.cherd.2025.08.040

Behgam Rahmanivahid , Hamed Nayebzadeh , Fatemeh Shabanipour Meybodi , Razieh Salehi

{"title":"Optimized synthesis and adsorption efficiency of magnetic spinel CuFe₂O₄ for dye removal from aqueous solutions","authors":"Behgam Rahmanivahid , Hamed Nayebzadeh , Fatemeh Shabanipour Meybodi , Razieh Salehi","doi":"10.1016/j.cherd.2025.08.040","DOIUrl":"10.1016/j.cherd.2025.08.040","url":null,"abstract":"<div><div>Magnetic nanoadsorbents with a spinel structure are highly effective for removing dye pollutants from aqueous environments due to their unique properties such as easy recoverability, chemical stability, and high surface area. In this study, a magnetic CuFe₂O₄ spinel nanoadsorbent was employed for the removal of methylene blue from aqueous solution. Magnetic CuFe<sub>2</sub>O<sub>4</sub> spinel nanoparticles were synthesized via solution combustion method using glycine and sorbitol as dual fuels. By tuning the sorbitol-to-glycine ratio from 0 to 0.6, a highly porous spinel framework with a dominant surface particle size of 10–15 nm was achieved. Higher sorbitol content promoted greater gas evolution during combustion, enlarging pore diameters and enhancing the material’s textural properties. Using the optimized CuFe<sub>2</sub>O<sub>4</sub> (G1/S0.4) formulation, zeta-potential measurements showed maximal dye-binding affinity at a sorbitol/glycine ratio of 0.4. Response surface methodology further pinpointed ideal adsorption conditions—pH 10.6, 1.18 g.L⁻¹ adsorbent dose, and 350 rpm stirring—under which 98 % of methylene blue was removed in 6 h. Equilibrium data fitted the Langmuir model, revealing monolayer adsorption with a maximum capacity of 19.4 mg.g⁻¹, while kinetics followed a pseudo-second-order mechanism. Thermodynamic analysis confirmed the process is spontaneous and exothermic. These results position CuFe<sub>2</sub>O<sub>4</sub> (G1/S0.4) as a potent adsorbent for efficient dye removal in wastewater treatment.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 57-72"},"PeriodicalIF":3.9,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010737","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

Wall collision-induced fragmentation of coal particles in rapid pyrolysis: Effects of coal rank and impact angle 煤颗粒在快速热解过程中壁面碰撞破碎：煤阶和冲击角的影响

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-08-26 DOI: 10.1016/j.cherd.2025.08.035

Guoping Ma , Peng Lv , Xudong Song , Yonghui Bai , Jiaofei Wang , Weiguang Su , Guangsuo Yu

{"title":"Wall collision-induced fragmentation of coal particles in rapid pyrolysis: Effects of coal rank and impact angle","authors":"Guoping Ma , Peng Lv , Xudong Song , Yonghui Bai , Jiaofei Wang , Weiguang Su , Guangsuo Yu","doi":"10.1016/j.cherd.2025.08.035","DOIUrl":"10.1016/j.cherd.2025.08.035","url":null,"abstract":"<div><div>During rapid pyrolysis, the fragmentation effect induced by the collision of coal particles with walls is a key factor promoting the formation of fine particulate matter in tar. This study employed an integrated approach combining high-speed visualization systems and digital image processing techniques to systematically analyze the fragmentation characteristics of six coal particles of different ranks during interactions with walls at various impact angles. The results demonstrate a significant negative correlation between coal rank and particle fragmentation propensity. Among the coal types studied, Zhaotong (ZT) coal, a representative low-rank coal, displayed pronounced fragmentation behavior due to the rapid release of volatiles during pyrolysis, forming an easily fractured porous and fragile char matrix. Notably, compared to the high breakage ratio of 6.5 % observed during normal (0°) impact, the fragmentation probability of coal particles colliding with inclined walls significantly decreased (e.g., reduced to 4.3 % at 30° and further to 0.3 % at 75°). This fragmentation probability exhibited a clear decreasing trend with increasing impact angle. The collision behavior was further quantified by analyzing key parameters including the coefficient of restitution, impact angle, incident velocity, and rebound velocity. This systematic investigation provides important theoretical insights into the fundamental mechanisms governing coal particle behavior under fast pyrolysis conditions.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 48-56"},"PeriodicalIF":3.9,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997519","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

LaCoO3/La-doped g-C3N4 heterojunctions for synergistically promoted photocatalytic degradation of enrofloxacin in an immobilized photocatalyst- polymer film-based airlift photocatalytic reactor LaCoO3/ la掺杂g-C3N4异质结在固定化光催化剂-聚合物膜基气升式光催化反应器中协同促进恩诺沙星的光催化降解

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-08-25 DOI: 10.1016/j.cherd.2025.08.032

A. Al-Farraji , Saad H. Ammar , Hussein A. Alabdly

{"title":"LaCoO3/La-doped g-C3N4 heterojunctions for synergistically promoted photocatalytic degradation of enrofloxacin in an immobilized photocatalyst- polymer film-based airlift photocatalytic reactor","authors":"A. Al-Farraji , Saad H. Ammar , Hussein A. Alabdly","doi":"10.1016/j.cherd.2025.08.032","DOIUrl":"10.1016/j.cherd.2025.08.032","url":null,"abstract":"<div><div>Developing highly active photocatalysts with low recombination rates of photo-promoted charge carriers has been widely studied and become an emerging research area. Herein, we report on constructing a Z-scheme LaCoO<sub>3</sub>/La-doped g-C<sub>3</sub>N<sub>4</sub> heterojunction photocatalyst and immobilizing it by a polyaniline film. A single split-plate airlift photocatalytic reactor including the polyaniline-immobilized LaCoO<sub>3</sub>/La-doped g-C<sub>3</sub>N<sub>4</sub> photocatalyst film was built and used for the photodegradation of enrofloxacin and real pharmaceutical wastewater. The operation of the designed photocatalytic reactor using the immobilized photocatalyst hybrid film presented 97.2 % degradation efficiency within 60 min (and 81.0 % TOC reduction), compared to 90.4 % in the slurry system. Besides, 91 % chemical-oxygen-demand (COD) and 83.5 % total-organic-carbon (TOC) have been removed from the real pharmaceutical wastewater effluent within 90 min. The immobilized LaCoO<sub>3</sub>/La-doped g-C<sub>3</sub>N<sub>4</sub> photocatalyst was effectively recycled five times. The reaction mechanism was analyzed in details, and the <sup>•</sup>O<sub>2</sub><sup>-</sup> and <sup>•</sup>OH radicals were the main reaction species. The band structure investigation showed that the Z-system heterojunction was built efficiently.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"221 ","pages":"Pages 487-496"},"PeriodicalIF":3.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144904376","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

Machine learning modeling and model predictive control of a closed-circuit reverse osmosis system 闭路反渗透系统的机器学习建模与模型预测控制

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-08-25 DOI: 10.1016/j.cherd.2025.08.023

Fahim Abdullah , Kris Villez , Srikanth Allu

{"title":"Machine learning modeling and model predictive control of a closed-circuit reverse osmosis system","authors":"Fahim Abdullah , Kris Villez , Srikanth Allu","doi":"10.1016/j.cherd.2025.08.023","DOIUrl":"10.1016/j.cherd.2025.08.023","url":null,"abstract":"<div><div>Closed-circuit reverse osmosis (CCRO) offers a flexible and energy-efficient alternative to conventional reverse osmosis by operating in a semi-batch mode that recycles brine, enabling higher recovery rates and reduced specific energy consumption (SEC). However, developing accurate, system-level dynamic models for CCRO remains challenging due to its nonlinear, multi-phase operation and sensitivity to variable feed water conditions. Traditional modeling approaches, such as NARMAX (nonlinear autoregressive moving average with exogenous inputs), often struggle to generalize across varying inlet feed concentrations, necessitating frequent parameter re-estimation and limiting their utility for real-time control applications. To address these limitations, we developed a long short-term memory (LSTM) neural network model trained on an extensive experimental data set from a CCRO pilot plant. The model accepts three inputs, feed flow rate, recirculation flow rate, and initial feed conductivity, and predicts three key outputs: reject conductivity, feed pump power draw, and recirculation pump power draw. We validated the LSTM model against experimental data, demonstrating its ability to distinguish between different feed conductivities and adapt to variable flow rates. Subsequently, we incorporated the LSTM model within a nonlinear model predictive control (MPC) scheme and conducted closed-loop simulations to optimize the integrated SEC (iSEC). The results project up to a 6% reduction in iSEC by using MPC to optimize performance over the entire experiment duration, without requiring any random excitation for data collection or parameter re-estimation.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 29-47"},"PeriodicalIF":3.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997520","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

Crystallization in the presence of impurities: mechanisms, models and controls 有杂质的结晶：机理、模型和控制

IF 3.9 3区工程技术

Chemical Engineering Research & Design Pub Date : 2025-08-25 DOI: 10.1016/j.cherd.2025.08.002

Baggie W. Nyande , Samir Diab , Helen Yao , Richard Lakerveld , Zoltan K. Nagy

引用次数: 0