Chinese Journal of Chemical Engineering最新文献

{"title":"A three-dimensional CFD numerical simulation study on pressurized oxy-fuel gasification of poultry manure in an industrial-scale gasifier","authors":"Qinwen Liu ,&nbsp;Guoqing Lian ,&nbsp;Wenli Dong ,&nbsp;Yu Su ,&nbsp;Wei Quan Leong ,&nbsp;Chi-Hwa Wang ,&nbsp;Wenqi Zhong","doi":"10.1016/j.cjche.2025.03.001","DOIUrl":"10.1016/j.cjche.2025.03.001","url":null,"abstract":"<div><div>As a renewable energy source, the thermal conversion of poultry manure, is a promising waste treatment solution that can generate circular economic outputs such as energy and reduce greenhouse gas emissions. Currently, pressurized gasification of poultry manure is still a novel research field, especially when combined with a novel technological route of oxy-fuel gasification. Oxy-fuel gasification is a newly proposed and promising gasification technology for power generation that facilitates future carbon capture and storage. In this work, based on a commercially operated industrial-scale chicken manure gasification power plant in Singapore, we presented an interesting first exploration of the coupled pressurization technology for oxy-fuel gasification of poultry manure using CFD numerical simulation, analyzed the effects of pressure and oxygen enrichment concentration as well as the coupling mechanism between them, and discussed the conversion and emission of nitrogen- and sulfur-containing pollutants. The results indicate that under oxy-fuel gasification condition (Oxy-30, <em>i.e</em>., 30%O₂/70%CO₂), as the pressure increases from 0.1 to 0.5 MPa, the CO concentration in the syngas increases slightly, the H₂ concentration increases to approximately 25%, and the CH₄ concentration (less than 1%) decreases, resulting in an increase in the calorific value of syngas from 5.2 to 5.6 MJ·m⁻³. Compared to atmospheric pressure conditions, a relatively higher oxygen-enriched concentration interval (Oxy-40 to Oxy-50) under pressurized conditions is advantageous for autothermal gasification. Pressurization increases NO precursors production and also promotes homogeneous and heterogeneous reduction of NO, and provides favorable conditions for self-desulfurization. This work offers reference for the realization of a highly efficient and low-energy-consumption thermochemical treatment of livestock manure coupled with negative carbon emission technology.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 115-127"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acid-base regulation in duodenum by intestinal fluid secretion: A simulation study","authors":"Yulan Zhao ,&nbsp;Yifan Qin ,&nbsp;Xiao Dong Chen ,&nbsp;Jie Xiao","doi":"10.1016/j.cjche.2024.12.014","DOIUrl":"10.1016/j.cjche.2024.12.014","url":null,"abstract":"<div><div>Up to now, how the secretion modes of intestinal fluid (<em>i.e.,</em> pancreaticobiliary secretion and wall secretion) can regulate intestinal acid-base environment has not been fully understood. Understanding the regulation mechanism is not only of great significance for intestinal health but may also lead to optimized designs for bio-inspired soft elastic reactors (SERs). In this work, the mixing and reaction of acidic gastric juice and alkaline intestinal fluid in a 3D duodenum with moving walls were modelled. A unique feature of this model is the implementation of both pancreaticobiliary and wall secretion of intestinal fluid as boundary conditions. This model allowed us to quantitatively explore the influence of secretion modes on pH regulation. The results demonstrated that coexistence of both pancreaticobiliary and wall secretions is the key to maintain the average pH in the duodenum at about 7.4. Their coexistence synergistically promotes the mixing and reaction of acid-base digestion liquids and provides a suitable catalytic environment for lipase in the intestine.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 76-86"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermodynamics insights into the gas-phase synthesis of glycolide from methyl glycolate","authors":"Dai Zhang ,&nbsp;Xiaofeng Xu ,&nbsp;Yueqiang Cao ,&nbsp;Wei Li ,&nbsp;Jinghong Zhou ,&nbsp;Xinggui Zhou","doi":"10.1016/j.cjche.2024.12.024","DOIUrl":"10.1016/j.cjche.2024.12.024","url":null,"abstract":"<div><div>Gas-phase synthesis of glycolide (GL) from methyl glycolate (MG) is of great significance for producing biodegradable polyglycolic acid. Here, we report a detailed thermodynamics study for the gas-phase synthesis of GL from MG, which involves complex reaction pathways, by utilizing the Gibbs free energy minimization method. The results indicate that the decompositions of MG and GL and the polymerization of MG are thermodynamically favorable as compared with the target pathway, <em>i.e.</em>, the cyclization of MG. Effects of the reaction conditions including temperature, pressure and feed composition on the formation of GL and linear polymers have also been addressed, which demonstrate that the higher temperature and lower pressure can effectively inhibit the formation of linear methyl ester dimer and improve the selectivity to GL. In addition, the higher N₂/MG ratio is beneficial for the formation of GL in the process promoted by catalysts. These thermodynamics results indicate that the process promoted by catalysts would benefit from the kinetics control by high-performance catalysts and the operation at high temperature, low pressure and high N₂/MG ratio to enhance the yield of targeted GL. The insights demonstrated here from thermodynamics are valuable for guiding the design of catalysts and/or optimization of reaction conditions for the gas-phase synthesis of GL from MG.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 171-181"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micellization behavior and thermodynamic properties of cetyltrimethylammonium bromide in lithium chloride, potassium chloride, magnesium chloride and calcium chloride solutions","authors":"Wenting Cheng,&nbsp;Qianqian Li,&nbsp;Ying Zhai,&nbsp;Huaigang Cheng,&nbsp;Fangqin Cheng","doi":"10.1016/j.cjche.2024.12.019","DOIUrl":"10.1016/j.cjche.2024.12.019","url":null,"abstract":"<div><div>The micellization behavior and thermodynamic properties of cetyltrimethylammonium bromide (CTAB) in single lithium chloride (LiCl), potassium chloride (KCl), magnesium chloride (MgCl₂) and calcium chloride (CaCl₂) solutions were investigated at 288.15−318.15 K. Result showed that the critical micelle concentration (CMC) values of CTAB in all solutions decreased to a minimum value around 298.15 K and then increased with further increasing the temperature. In all cases, the CMC values decreased with increasing salt concentration at each temperature. Additionally, the introduction of any single salt resulted in a reduction of CMC values for CTAB, attributed to the combined effects of counterions and entropy-driven interactions. The observed trend for CMC values was as follows: <span><math><mrow><msub><mtext>CMC</mtext><mrow><msub><mi>H</mi><mn>2</mn></msub><mi>O</mi></mrow></msub></mrow></math></span> &gt; <span><math><mrow><msub><mtext>CMC</mtext><mtext>KCl</mtext></msub></mrow></math></span> &gt; <span><math><mrow><msub><mtext>CMC</mtext><mtext>LiCl</mtext></msub></mrow></math></span> &gt; <span><math><mrow><msub><mtext>CMC</mtext><msub><mtext>CaCl</mtext><mn>2</mn></msub></msub><mo>&gt;</mo><msub><mtext>CMC</mtext><msub><mtext>MgCl</mtext><mn>2</mn></msub></msub></mrow></math></span>. Furthermore, standard thermodynamic parameters, including standard free energy of micellization (<span><math><mrow><mo>Δ</mo><msubsup><mi>G</mi><mi>m</mi><mn>0</mn></msubsup></mrow></math></span>), standard enthalpy of micellization (<span><math><mrow><mo>Δ</mo><msubsup><mi>H</mi><mi>m</mi><mn>0</mn></msubsup></mrow></math></span>) and standard entropy of micellization (<span><math><mrow><mo>Δ</mo><msubsup><mi>S</mi><mi>m</mi><mn>0</mn></msubsup></mrow></math></span>), were calculated based on the obtained CMC values. The negative values of <span><math><mo>Δ</mo><msubsup><mi>G</mi><mi>m</mi><mn>0</mn></msubsup></math></span> indicated that the formation of CTAB micelles was a spontaneous behavior. The variations in <span><math><mrow><mo>Δ</mo><msubsup><mi>H</mi><mi>m</mi><mn>0</mn></msubsup></mrow></math></span> and <span><math><mrow><mo>Δ</mo><msubsup><mi>S</mi><mi>m</mi><mn>0</mn></msubsup></mrow></math></span> suggested that micellization was primarily entropy-driven at temperatures between 288.15 and 298.15 K, while it was influenced by both entropy and enthalpy from 298.15 to 318.15 K. Fourier transform infrared spectroscopy (FTIR) and transmission electron microscope (TEM) were employed to further explore the effects of salts on the micellization behavior of CTAB.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 95-104"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of hydrophobic CuCl@AC–PTFE composites with an enhanced Cu(I) stability for efficient CO adsorption","authors":"Jingru Dou,&nbsp;Yingxuan Wen,&nbsp;Fangfang Zhang,&nbsp;Falong Shan,&nbsp;Shougui Wang,&nbsp;Jipeng Dong,&nbsp;Fei Gao,&nbsp;Guanghui Chen","doi":"10.1016/j.cjche.2025.01.005","DOIUrl":"10.1016/j.cjche.2025.01.005","url":null,"abstract":"<div><div>Cu(I) based CO adsorbents are prone to oxidation and deactivation owing to the sensitivity of Cu⁺ ions to oxygen and moisture in the humid air. In this study, in order to improve its antioxidant performance, hydrophobic Cu(I) based adsorbents were fabricated using polytetrafluoroethylene (PTFE) for the hydrophobic modification, effectively avoiding the contact of CuCl active species with moisture, thereby inhibiting the oxidation of the Cu(I) based adsorbents. The successful introduction of PTFE into the activated carbon (AC) carrier significantly improves the hydrophobicity of the adsorbent. The optimal adsorbent CuCl(6)@AC–PTFE(0.10%) with the CuCl loading of 6 mmol·g⁻¹ and the PTFE mass concentration of 0.10% exhibits an excellent CO adsorption capacity of 3.61 mmol·g⁻¹ (303 K, 500 kPa) as well as high CO/CO₂ and CO/N₂ adsorption selectivities of 29 and 203 (303 K, 100 kPa). Particularly, compared with the unmodified adsorbents, the antioxidant performance of modified adsorbent CuCl(6)@AC–PTFE(0.10%) is significantly improved, holding 86% of CO adsorption performance of fresh one after 24 h of exposure to humid air with a relative humidity of 70%, making the fabricated composite a promising adsorbent for CO separation.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 23-31"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An experimental study into the pyrolysis characteristics of waste tire rubber with catalyst addition","authors":"Xuanyu Ji ,&nbsp;Hanyu Liu ,&nbsp;Junting Chen ,&nbsp;Xiong Zhou ,&nbsp;Jianbo Li ,&nbsp;Lu Yang ,&nbsp;Weijian Lin ,&nbsp;Ning Chen","doi":"10.1016/j.cjche.2025.02.021","DOIUrl":"10.1016/j.cjche.2025.02.021","url":null,"abstract":"<div><div>In this paper, the pyrolysis characteristics of waste tire rubber with catalyst addition were experimentally studied. Pyrolysis experimentations of waste tire rubber with either base, acid or Zeolite catalysts were performed in a Thermal Gravimetric Analyzer, a one-stage test rig and a two-stage test rig respectively. This is followed by analysis into the rates of pyrolysis reactions and the yields and distribution of the three-phase products using thermogravimetric infrared spectroscopy (TG-IR) and gas chromatography-mass spectrometry (GC-MS). Results indicated that the transition metal chloride catalysts improved the reaction rate and were overall effective than the solid acid-base catalysts. Benzene and toluene yields were improved by all three catalysts in the primary pyrolysis, and the best performance was achieved at 550 °C and 600 °C with 30% NaOH. With ZSM-5 in the secondary pyrolysis, proportion of high calorific gases components as H₂ and CH₄ were increased, and the arylation and isomerization reactions were also promoted. The optimum aromatics yield was achieved at 600 °C and 50% ZSM condition. This study would provide a reference for resourceful utilization of waste tires.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 128-141"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering stable multi-component pH responsive nanomedicine for enhanced photothermal/photodynamic therapy","authors":"Zhiyuan Zheng ,&nbsp;Yue Wu ,&nbsp;Yuan Chen ,&nbsp;Xinyue Sun ,&nbsp;Ayşe Başak Kayitmazer ,&nbsp;Ayyaz Ahmad ,&nbsp;Naveed Ramzan ,&nbsp;Muhammad Shahid Rafique ,&nbsp;Xiaolong Zhou ,&nbsp;Yisheng Xu","doi":"10.1016/j.cjche.2024.07.028","DOIUrl":"10.1016/j.cjche.2024.07.028","url":null,"abstract":"<div><div>Integrating multiple modalities of cancer therapies for synergistic and enhanced therapeutic efficacy remains challenging. Herein, flash nanoprecipitation (FNP), a kinetically driven process, was employed to expedite the coordination reaction time required for nano-encapsulate components with completely opposite physiochemical properties including sorafenib (SRF), hemoglobin (Hb), chlorin e6 (Ce6), and indocyanine green (ICG) into a multi-component HSCI nanomedicine. Hydrophilic components Hb and ICG interact to form hydrophobic ICG-Hb complexes under electrostatic and hydrophobic interactions. This process facilitates the characteristic time of nucleation (<em>τ</em>_nucleation) to match the characteristic mixing time (<em>τ</em>_mix) of the FNP process, resulting in the formulation of kinetically stable nanomedicine, overcoming the long equilibrium times and instability issues associated with thermodynamic assembly. Importantly, pH-responsive structure is also easily but effectively integrated in nanomedicine during this kinetically driven formulation to manipulate its structures. In the acidic tumor microenvironment (TME), the pH-stimulated morphology transformation of HSCI nanomedicine boosts its reactive oxygen species (ROS) generation efficiency and photothermal efficacy, endowing it with better antitumor suppression. <em>In vitro</em> and <em>in vivo</em> experiments reveal that the HSCI nanomedicine offers a synergistic therapeutic effect and stronger tumor suppression compared with single therapies. These results open a new window for developing strategies for multimodal combinatory cancer therapies.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 32-44"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experiment on a new biphasic absorber composed of TEPA/DEEA for capturing CO2 and its phase transition mechanism","authors":"Fulong Zhang ,&nbsp;Wenbo Gu ,&nbsp;Jiawei Zhang ,&nbsp;Zipeng Zheng","doi":"10.1016/j.cjche.2024.11.027","DOIUrl":"10.1016/j.cjche.2024.11.027","url":null,"abstract":"<div><div>With the development of chemical absorbers, biphasic absorbers have the potential for absorption performance and energy consumption. In this work, a new biphasic absorber composed of tetraethylene pentamine (TEPA) and Diethyl ethanolamine (DEEA) is formed to capture CO_2. The appropriate stratification boundaries by experimentation are found for orthogonal experiment. The optimum capture CO₂ conditions are obtained according to the orthogonal design. The ranking of factors affecting the ability and rate to absorb CO₂ is C (waste flow rate) &gt; A (mass ratio) &gt; B (reaction temperature). The desorption efficiency of the new biphasic absorber reaches 96.66% at 140 °C. The new biphasic absorber has good recyclability and its energy consumption is 2.23 GJ·t⁻¹ CO_2. Through viscosity experiment, reaction products analyzed by ¹³C NMR date, functional groups and chemical bonds analyzed by FT-IR date analysis, the mechanisms of CO₂ absorption and phase transition follow a zwitterionic mechanism. This is a biphasic amine that deserves in-depth study.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 64-75"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exosomes separation with aqueous two-phase systems from bovine milk","authors":"Jingjing Sun,&nbsp;Ruoque Mao,&nbsp;Xiaoqian Fu,&nbsp;Shanjing Yao,&nbsp;Dongqiang Lin","doi":"10.1016/j.cjche.2024.12.016","DOIUrl":"10.1016/j.cjche.2024.12.016","url":null,"abstract":"<div><div>The exosomes hold significant potential in disease diagnosis and therapeutic interventions. The objective of this study was to investigate the potential of aqueous two-phase systems (ATPSs) for the separation of bovine milk exosomes. The milk exosome partition behaviors and bovine milk separation were investigated, and the ATPSs and bovine milk whey addition was optimized. The optimal separation conditions were identified as 16% (mass) polyethylene glycol 4000, 10% (mass) dipotassium phosphate, and 1% (mass) enzymatic hydrolysis bovine milk whey. During the separation process, bovine milk exosomes were predominantly enriched in the interphase, while protein impurities were primarily found in the bottom phase. The process yielded bovine milk exosomes of 2.0 × 10¹¹ particles per ml whey with high purity (staining rate&gt;90%, 7.01 × 10¹⁰ particles per mg protein) and high uniformity (polydispersity index &lt;0.03). The isolated exosomes were characterized and identified by transmission electron microscopy, zeta potential and size distribution. The results demonstrated aqueous two-phase extraction possesses a robust capability for the enrichment and separation of exosomes directly from bovine milk whey, presenting a novel approach for the large-scale isolation of exosomes.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 1-10"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical studies on rib and channel designs considering interfacial contact resistance","authors":"Pengfei Feng ,&nbsp;Kuan Yang ,&nbsp;Ligang Tan","doi":"10.1016/j.cjche.2024.12.011","DOIUrl":"10.1016/j.cjche.2024.12.011","url":null,"abstract":"<div><div>The mass transport and ohmic losses in proton exchange membrane fuel cells (PEMFCs) is significantly influenced by the channel to rib width ratio (CRWR), particularly when accounting for the interfacial contact resistance between bipolar plates (BPs) and gas diffusion layers (GDLs) (ICR_BP-GDL). Both the determination of the optimal CRWR value and the development of an efficient flow field structure are significantly influenced by ICR_BP-GDLs. To investigate this, three-dimensional numerical models were developed, revealing that selecting an optimal CRWR tailored to specific ICR_BP-GDL values can effectively balance mass transport and ohmic losses. Building on this insight, a novel island two-dimensional flow field design is proposed, demonstrating the ability to enhance oxygen transport to the catalyst layer (CL) and achieve a more uniform oxygen distribution without increasing ohmic losses. Compared to conventional straight and serpentine flow fields, the island flow field improves output power density by 4.5% and 3.5%, respectively, while reducing the liquid water coverage ratio by 30%. Additionally, the study identifies optimal CRWR values for conventional flow fields corresponding to ICR_BP-GDLs of 2.5, 5, 10, 20, and 40 mΩ·cm² as 1.5, 1.5, 1.0, 0.67, and 0.43, respectively. For the island flow field, the optimal CRWRs are consistently smaller—1.5, 1.0, 0.67, 0.43, and 0.43—due to its superior mass transfer capability. This work provides a valuable framework for optimizing flow field designs to achieve improved PEMFC performance.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 11-22"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890679","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}