Korean Journal of Chemical Engineering最新文献_第2页

Evaluation of Mixing Efficiency Using Hybrid Impeller Synergistic with Pulsed Air Bubbles in Liquid–Liquid System 利用混合叶轮与脉冲气泡协同作用评估液-液系统中的混合效率

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-13 DOI: 10.1007/s11814-025-00429-w

Yan Zhang, Xinyu Li, Gai Zhang, Zhiqiang Li, Jianxin Xu, Hua Wang

{"title":"Evaluation of Mixing Efficiency Using Hybrid Impeller Synergistic with Pulsed Air Bubbles in Liquid–Liquid System","authors":"Yan Zhang, Xinyu Li, Gai Zhang, Zhiqiang Li, Jianxin Xu, Hua Wang","doi":"10.1007/s11814-025-00429-w","DOIUrl":"10.1007/s11814-025-00429-w","url":null,"abstract":"<div><p>The motion of bubbles in stirred reactors exerts a significant influence on heat and mass transfer, as well as reaction rates within the reactor. This study examines the chaotic mixing characteristics and dynamic behavior of bubbles in a stirred reactor by introducing pulsed air flow. Deep learning is employed to track and analyze bubble motion, thereby revealing the mechanistic insights of bubble dynamics in stirred reactors. Additionally, mechanical stirring chaos characteristics are quantified using 0-1 tests, coupled with a comprehensive evaluation of mixing systems based on mixing times. The results demonstrate that pulsed air flow induces nonlinear bubble motion, generating complex mixing patterns and flow structures within the reactor. Quantitative analysis of bubble trajectories and distributions elucidates the impact mechanisms of pulsed air flow on mixing efficiency. Further research reveals that optimizing parameters of pulsed air flow can enhance bubble motion, improve mixing efficiency, accelerate reaction rates, and enhance reactor performance. Under optimal conditions, mixing times are reduced by 3.26 times compared to conventional mixing systems. This study offers novel insights and methodologies for the design and optimization of mixing reactors.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1015 - 1031"},"PeriodicalIF":2.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852606","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}

引用次数: 0

Antioxidant-Capped Gold Nanoparticles for Colorimetric Detection of Kanamycin 抗氧化包覆金纳米颗粒比色法检测卡那霉素

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-11 DOI: 10.1007/s11814-025-00432-1

Saerom Park, Jeong Woo Lee, Dojin Kim, Ki Soo Park, Sang Hyun Lee

{"title":"Antioxidant-Capped Gold Nanoparticles for Colorimetric Detection of Kanamycin","authors":"Saerom Park, Jeong Woo Lee, Dojin Kim, Ki Soo Park, Sang Hyun Lee","doi":"10.1007/s11814-025-00432-1","DOIUrl":"10.1007/s11814-025-00432-1","url":null,"abstract":"<div><p>In the development of aptasensors, which are biosensors that use aptamers (short DNA or RNA molecules) to specifically bind to target molecules, gold nanoparticles (GNPs) have traditionally been synthesized using citric acid. However, citric acid-capped GNPs are not optimized for constructing aptasensors. In this study, we aimed to develop a more sensitive, selective, and efficient antioxidant-capped GNP (A-GNP) probe for the colorimetric detection of kanamycin. We assessed the performance of A-GNPs synthesized with polyphenols, multi-carboxylic acids, ascorbic acid, and kojic acid, as both reducing agents and stabilizers. Among the tested antioxidants, only ascorbic acid and gallic acid mediated the formation of A-GNPs at room temperature and these could be optimized to construct aptasensors by functionalizing the A-GNPs with poly(adenine)-tailed DNA aptamers (pA-apt). The colorimetric probe using gallic acid-capped GNPs had a limit of detection for kanamycin of 6.2 nM, which is lower than the 22.0 nM value obtained using citric acid-capped GNPs. Furthermore, this aptasensor showed high selectivity for kanamycin, indicating that the A-GNP/pA-apt probe could be applied as a novel aptasensor for antibiotic detection in real-world contexts.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1099 - 1107"},"PeriodicalIF":2.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852482","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}

引用次数: 0

Microfabricated Conductive PEDOT:PSS Hydrogels for Soft Electronics 用于软电子器件的微细加工导电 PEDOT:PSS 水凝胶

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-10 DOI: 10.1007/s11814-025-00434-z

Ming Yang, Cunjiang Yu

{"title":"Microfabricated Conductive PEDOT:PSS Hydrogels for Soft Electronics","authors":"Ming Yang, Cunjiang Yu","doi":"10.1007/s11814-025-00434-z","DOIUrl":"10.1007/s11814-025-00434-z","url":null,"abstract":"<div><p>Soft electronics integrate biology, materials science, and electronic engineering to create devices that could seamlessly interface with biological systems. Among soft electronic materials, poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) hydrogels are distinguished by their combined ionic–electronic conductivity, tissue-like mechanics, and biocompatibility. Despite these advantages, PEDOT:PSS hydrogels still face challenges, including high water content, mechanical weakness, and limited adhesion to conventional electronic materials. These challenges are further intensified by the incompatibility of PEDOT:PSS with high-temperature processing and chemically demanding fabrication techniques. Consequently, research has increasingly focused on developing PEDOT:PSS hydrogels with advanced fabrication methods that enable scalable production, complex structure, and high resolution to meet the requirements of soft electronics. This review explores the integration of PEDOT:PSS hydrogels with soft electronics from hydrogel-to-device and device-to-hydrogel perspectives. It explores strategies to enhance the performance of PEDOT:PSS hydrogels and address fabrication challenges. Both top-down (e.g., scalable fabrication and high precision) and bottom-up (e.g., tunable conductivity and multifunctionality) approaches are examined, emphasizing advances that improve hydrogel integration with manufacturing technologies. By analyzing these design principles, this review contributes to hydrogel-based microfabrication and soft electronics, driving developments in bioelectronics, soft sensors, and soft robotics.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"935 - 952"},"PeriodicalIF":2.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852476","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}

引用次数: 0

Study on the Dissociation of Cryolite in SPL 冰晶石在SPL中解离的研究

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-06 DOI: 10.1007/s11814-025-00412-5

Fangheng Tang, Xiping Chen, Hao Liu, Hongwei Xuan

{"title":"Study on the Dissociation of Cryolite in SPL","authors":"Fangheng Tang, Xiping Chen, Hao Liu, Hongwei Xuan","doi":"10.1007/s11814-025-00412-5","DOIUrl":"10.1007/s11814-025-00412-5","url":null,"abstract":"<div><p>The spent pot lining of aluminum electrolysis (SPL) is a typical harmful solid waste discharged from the production process of primary aluminum. It contains about 30% of fluoride and 0.2% of cyanide, which is a valuable fluorine-containing resource. With SPL as raw material, sodium carbonate was used as a reagent, and dissociation of cryolite was investigated by a baking process. Gibbs free energy of cryolite dissociation was calculated and the reaction mechanism of cryolite was discussed. At the same time, the effects of reagent addition ratio, baking temperature and reaction time on the dissociation of cryolite in SPL were discussed. The results show that under the conditions of a reagent addition ratio of 30–35wt%, baking temperature of 800–850 ℃, and reaction time of 3–3.5 h, the phase of cryolite and mullite in the SPL disappears, cryolite is transformed into sodium fluoride and sodium metaaluminate compounds, and mullite is transformed into nepheline or feldspar. The concentration of fluoride ion in clinker leaching solution increased to 8.84 g/L, almost two times that of primary concentration 4.56 g/L in SPL, and the effect of dissociation was obvious, which will be beneficial to the subsequent recovery of fluorides.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 4","pages":"867 - 875"},"PeriodicalIF":2.9,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707025","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}

引用次数: 0

Publisher Correction: Two-phase Electrolytes for Lithium Metal Batteries 出版者更正：锂金属电池的两相电解质

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-05 DOI: 10.1007/s11814-025-00420-5

Chaewon Lee, Eunchae Kim, Minju An, Hyosang An, Hyun Woo Kim, Yeonguk Son

引用次数: 0

Comparison of Radioisotope Adsorption Capability in Metal Organic Frameworks Through DFT Simulation 金属有机骨架对放射性同位素吸附性能的DFT模拟比较

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-03 DOI: 10.1007/s11814-025-00425-0

Hwanhui Lee, Jeongho An, Kunok Chang

引用次数: 0

Template-Based Fabrication of Copper Oxide for Persulfate Activation: Investigating Non-radical Mechanisms in Efficient Bisphenol a Degradation 模板法制备氧化铜活化过硫酸盐：研究有效降解双酚a的非自由基机制

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-03 DOI: 10.1007/s11814-025-00413-4

Jiayun Liu, Zhiyi Lai, Kaiyong Wang, Jianning Wu, Shengchao Yang, Zhiyong Liu, Guihua Meng, Xuhong Guo

{"title":"Template-Based Fabrication of Copper Oxide for Persulfate Activation: Investigating Non-radical Mechanisms in Efficient Bisphenol a Degradation","authors":"Jiayun Liu, Zhiyi Lai, Kaiyong Wang, Jianning Wu, Shengchao Yang, Zhiyong Liu, Guihua Meng, Xuhong Guo","doi":"10.1007/s11814-025-00413-4","DOIUrl":"10.1007/s11814-025-00413-4","url":null,"abstract":"<div><p>Currently, advanced oxidation processes (AOPs) are an efficient method for the degradation of recalcitrant organic pollutants. In this work, copper oxide (CuO) catalysts were synthesized using mesoporous silica (SiO<sub>2</sub>) as a template for the activation of peroxomonosulfate (PMS) for the removal of the target pollutant bisphenol A (BPA). The results showed that the CuO catalysts not only increased the specific surface area and active sites, but also enhanced the efficient activation of PMS to produce a large amount of reactive oxygen species. In this paper, the degradation process and mechanism of BPA by CuO in PMS activation system were comparatively investigated by characterization data and experimental data. Under the optimum conditions, the degradation rate of BPA (30 mg/L) was as high as 97.8%, which was basically completely degraded. The CuO/PMS catalytic system involves both radical and non-radical pathways, with the non-radical <sup>1</sup>O<sub>2</sub> being the main reactive oxygen species for the degradation of BPA. The reaction intermediates were identified by liquid chromatography–mass spectrometry (LC–MS), and the degradation mechanism and the degradation pathway of the catalyst were proposed. It was shown by cycling experiments that the degradation rate of BPA in the system reached more than 65% at 60 min when the catalyst CuO was reused for the fifth time. This indicates that CuO has good stability. This study provides strong evidence that <sup>1</sup>O<sub>2</sub> is the main active agent for degradation in the PMS-induced inhomogeneous catalytic oxidation system.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 4","pages":"843 - 855"},"PeriodicalIF":2.9,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706886","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}

引用次数: 0

Experimental Study of Shape-Stabilized Phase Change Materials Based on High-Density Polyethylene and Expanded Graphite 基于高密度聚乙烯和膨胀石墨的形状稳定相变材料的实验研究

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-03-01 DOI: 10.1007/s11814-025-00427-y

Dan Zhou, Bo Li, Xinghui Liu, Yi Zhang

{"title":"Experimental Study of Shape-Stabilized Phase Change Materials Based on High-Density Polyethylene and Expanded Graphite","authors":"Dan Zhou, Bo Li, Xinghui Liu, Yi Zhang","doi":"10.1007/s11814-025-00427-y","DOIUrl":"10.1007/s11814-025-00427-y","url":null,"abstract":"<div><p>Low-temperature latent heat storage based on solid–liquid phase change materials (PCMs) is an effective energy saving technology. However, the problems of low thermal conductivity and liquid leakage exist, so effective encapsulation and enhanced heat transfer are the focus of current research. In this study, paraffin RT58 was selected as PCM and HDPE were selected as encapsulation materials. Three PCM/HDPE composites with different proportions were prepared by melt-blending method and their encapsulation effect was tested. According to the results, 80wt%paraffin/20wt%HDPE composite was used for the subsequent experiments. EG was used to construct a heat-conducting skeleton inside the composite. The effects of EG content on thermal properties, density, leakage rate, and heat storage/release rate of the composites were investigated. The results show that the melting temperature and solidification temperature of the composites decrease with the increase of EG content. Furthermore, the addition of EG greatly reduces the leakage of composite by at least 2/3. The heat storage and release rate of the composite is accelerated with the increase of EG. The content of EG should be optimized by comprehensively considering its effects on the heat storage/release rate, heat storage density, bulk density, and encapsulation effect of the composite.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 4","pages":"923 - 934"},"PeriodicalIF":2.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706882","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}

引用次数: 0

Geopolymer-Based Solidification and Stabilization of CaO-Induced Concentrated Borate Waste Arising from Nuclear Power Plant Operation 核电站运行中cao诱导的浓硼酸盐废物的地聚合物固化与稳定

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-02-24 DOI: 10.1007/s11814-025-00424-1

Dong-Yong Chung, Keunyoung Lee, Sungjune Sohn

{"title":"Geopolymer-Based Solidification and Stabilization of CaO-Induced Concentrated Borate Waste Arising from Nuclear Power Plant Operation","authors":"Dong-Yong Chung, Keunyoung Lee, Sungjune Sohn","doi":"10.1007/s11814-025-00424-1","DOIUrl":"10.1007/s11814-025-00424-1","url":null,"abstract":"<div><p>This study examined geopolymer-based solidification and stabilization of sodium borate waste generated from nuclear power plants. As the sodium borate is highly soluble in water, the dehydration and dissolution characteristics were preliminarily investigated. The wasteform containing sodium borate anhydrous (SBA) itself was shown to exhibit a poor compressive strength after thermal circulation and immersion tests, which was below the strength criterion of 3.44 MPa. Upon the introduction of CaO to SBA solution to improve the dissolution properties of the borate waste, the synthesized compounds were found mainly composed of calcium borate hydrate (Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub>⋅H<sub>2</sub>O), sodium metaborate hydrate (Na<sub>2</sub>B<sub>4</sub>O<sub>7</sub>⋅H<sub>2</sub>O) and Ca(OH)<sub>2</sub>. Consequently, the solubility in water and alkaline solution decreased to a value less than 10% of the solubility of SBA. The wasteform containing CaO-induced SBA was fabricated under the condition of SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> and Na<sub>2</sub>O/SiO<sub>2</sub> of 4.0 and 0.25, respectively, with waste loading of 20–30 wt%. The compressive strength values measured after 28-day curing, thermal circulation test and immersion test were higher than the criteria. The leaching characteristics of Co, Sr and Cs evaluated according to the ANSI/ANS 16.1 method were shown to satisfy the waste acceptance criteria.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 6","pages":"1237 - 1247"},"PeriodicalIF":2.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135337","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}

引用次数: 0

Bimetallic Phosphide-Sulfide Nanoparticles Embedded in S-Doped Three-Dimensional Porous Carbon as Efficient Electrocatalysts for OER 双金属磷化硫纳米颗粒嵌入s掺杂三维多孔碳中作为OER的高效电催化剂

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-02-20 DOI: 10.1007/s11814-024-00371-3

Yuhong Zhang, Tianrui Yu, Jiaqi Zhou, Da Li, Mingxin Feng, Zewu Zhang, Qingzhao Yao, Yuming Zhou

{"title":"Bimetallic Phosphide-Sulfide Nanoparticles Embedded in S-Doped Three-Dimensional Porous Carbon as Efficient Electrocatalysts for OER","authors":"Yuhong Zhang, Tianrui Yu, Jiaqi Zhou, Da Li, Mingxin Feng, Zewu Zhang, Qingzhao Yao, Yuming Zhou","doi":"10.1007/s11814-024-00371-3","DOIUrl":"10.1007/s11814-024-00371-3","url":null,"abstract":"<div><p>Porous carbon has been extensively employed as a support for phosphide and sulfide nanoparticles to develop efficient and low-cost oxygen evolution reaction (OER) catalysts, owing to its superior electrical conductivity. This paper utilizes a cation exchange process in which the cations in the cation exchange resin (CER) are readily replaced by transition metal ions. Moreover, utilizing the inherent carbon-rich and sulfur-rich characteristics of CER, carbonization and phosphidation treatments were performed. The study successfully synthesizes a novel bimetallic phosphide-sulfide nanoparticle embedded in S-doped three-dimensional porous carbon electrocatalyst, NiCoPS@SC. The electrocatalyst exhibits exceptional catalytic performance in the OER: a low overpotential (329 mV) at 10 mA cm<sup>−2</sup> current density, a Tafel slope of 87.0 mV dec<sup>−1</sup>, and a charge transfer resistance (2.47 Ω). The improved activity of NiCoPS@SC is attributed to the distinctive three-dimensional porous structure of the carbon nanomaterials and excellent electrical conductivity, which significantly increase the specific surface area (228.82 m<sup>2</sup> g<sup>−1</sup>) and the density of active sites. Furthermore, the synergistic interaction between transition metal phosphide and sulfide nanoparticles, in conjunction with the strong integration with carbon nanostructures, improves interfacial interactions. This reduces metal particle agglomeration and erosion, thus enhancing catalytic performance while ensuring the structural stability and durability of the electrocatalyst. This three-dimensional porous transition bimetallic phosphide-sulfide carbon nanostructure offers a novel approach for developing practical transition metal OER catalysts.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 4","pages":"857 - 866"},"PeriodicalIF":2.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707000","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}

引用次数: 0