Korean Journal of Chemical Engineering最新文献

{"title":"A Self-Powered Dual ROS Sensor Adopting Biofuel Cell Platform for Real-Time and Selective Monitoring of Oxygen and Hydrogen Peroxide","authors":"Joonyoung Lee,&nbsp;Yongchai Kwon","doi":"10.1007/s11814-025-00530-0","DOIUrl":"10.1007/s11814-025-00530-0","url":null,"abstract":"<div><p>Reactive oxygen species (ROS) play a crucial role in various biological processes, and their accurate detection is essential for biomedical applications. Although various types of ROS sensors are explored, there are demands for sensors that can be applied to wearable and implantable devices to measure the concentration of ROS in the human body. In this study, a self-powered ROS sensor is explored based on enzymatic biofuel cell (EBFC) to selectively detect oxygen (O₂) and hydrogen peroxide (H₂O₂). Furthermore, this ROS sensor utilizes buckypaper and polydimethylsiloxane (BP@PDMS)-based electrode. For anode, glucose dehydrogenase is immobilized on BP@PDMS, while as cathode, both bilirubin oxidase (BOD) and horseradish peroxidase (HRP) are immobilized on BP@PDMS, and the two cathodes detect O₂ and H₂O₂, respectively. They show good sensitivity for each O₂ and H₂O₂ fuel, while the sensitivity is quantified by measuring their reduction current density. Furthermore, polarization curves of full cell prepared with one anode and two cathodes show maximum power density of 129 µW/cm² at 0.4 V for O₂ and 440 µW/cm² at 0.5 V for H₂O₂, and this proves desirable step reaction occurs within the given concentration range of fuels, which are 25–100 cc/min (O₂) and 1–3 mM (H₂O₂). Furthermore, the flexible design of self-powered ROS sensor explored in this study highlights its possibility for integration into wearable and implantable devices, while this study proves that ROS sensor adopting EBFC platform can show high sensitivity and selectivity, and excellent adaptability for associated applications.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 11","pages":"2685 - 2691"},"PeriodicalIF":3.2,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923352","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}

{"title":"Ultrafast Kinetics of 4-Nitrophenol Reduction via Coral-Like Nanostructured Cu Mesh Monitored By Real-Time UV–Vis Absorption Spectroscopy","authors":"Min Gyu Lee,&nbsp;Younghun Kim","doi":"10.1007/s11814-025-00529-7","DOIUrl":"10.1007/s11814-025-00529-7","url":null,"abstract":"<div><p>Analyzing ultrafast liquid-phase reactions in real time presents significant challenges owing to their rapid kinetics. In this study, by employing the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) as a model reaction, we demonstrate the feasibility of real-time kinetic analysis using UV–Vis absorption spectroscopy. This reaction, which was completed within 10 s, was successfully monitored and analyzed to understand the limitations of conventional ultrafast reaction methods and explore steps to overcome them. A novel coral-like ultrasonic-treated Cu (UCu) mesh fabricated via sulfidation and ultrasonic treatments was utilized as the catalyst for this reaction, resulting in a high specific surface area and abundant active sites. The UCu mesh exhibited an apparent rate constant of 0.353 s⁻¹, significantly outperforming other reported catalysts, such as ZnO@Cu (0.043 s⁻¹) and Cu nanowires (0.076 s⁻¹). Compared to Cu and CuS meshes, the UCu mesh demonstrated a 29- to 58-fold improvement in catalytic performance under identical conditions. These results demonstrate the effectiveness of integrating real-time UV–Vis spectroscopy with advanced nanostructured catalysts for ultrafast reaction analyses. This study establishes the UCu mesh as a highly efficient and reusable catalyst with promising applications in environmental and industrial processes requiring rapid catalytic reactions.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 11","pages":"2513 - 2522"},"PeriodicalIF":3.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923270","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}

{"title":"Kinetic Modeling and Mechanism of the Gas Bubble-Assisted Extraction of Paclitaxel from Biomass of Taxus chinensis","authors":"Jong-Min Park,&nbsp;Yeji Kang,&nbsp;Jin-Hyun Kim","doi":"10.1007/s11814-025-00525-x","DOIUrl":"10.1007/s11814-025-00525-x","url":null,"abstract":"<div><p>In this study, the extraction efficiency, extraction kinetics, and extraction mechanism according to bubble size in gas bubble-assisted extraction were investigated to recover paclitaxel efficiently from <i>Taxus chinensis</i>. When the bubble diameters were 2.3, 2.7, 3.0, 3.3, 3.7, 4.1, 4.5, 4.8, and 5.3 mm, the maximum extracted paclitaxel concentrations were 0.812, 0.830, 0.845, 0.850, 0.868, 0.876, 0.900, 0.916, and 0.933 mg/mL, respectively. The results indicated that the paclitaxel yield increased as the bubble diameter increased during extraction. Most of the paclitaxel (&gt; 93.3%) could be recovered by a one-time extraction when the bubble diameters were greater than 5.3 mm. The extraction mechanism demonstrated that the bubbles collapsed at the surface of the extraction solution and created shockwaves that strongly impacted the biomass, which disrupted the cells. When the extracted data were applied to various empirical models (second-order model, parabolic diffusion model, power law model, and logarithmic model), the second-order model was found to be the most suitable. In addition, a model that can predict the concentration of extracted paclitaxel was proposed using regression analysis of the equilibrium concentration and initial extraction rate according to the bubble diameter. The experimental data and the predicted data were found to be in agreement.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 12","pages":"2821 - 2833"},"PeriodicalIF":3.2,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145181466","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}

{"title":"Leveraging Generative AI and Large Language Model for Process Systems Engineering: A State-of-the-Art Review","authors":"TaeYong Woo,&nbsp;SangYoun Kim,&nbsp;Shahzeb Tariq,&nbsp;SungKu Heo,&nbsp;ChangKyoo Yoo","doi":"10.1007/s11814-025-00524-y","DOIUrl":"10.1007/s11814-025-00524-y","url":null,"abstract":"<div><p>Process systems engineering (PSE) has long been recognized as a critical discipline in chemical engineering for improving process efficiency through mathematical modeling, optimization, and control. The advent of Industry 4.0 has advanced PSE by integrating it with innovative digital tools, including big data analytics, artificial intelligence (AI), and machine learning. In this context, large language models (LLMs), which are state-of-the-art AI techniques, represent transformative generative AI (GenAI) technologies capable of advancing automation, process optimization, and knowledge extraction in PSE. However, the application of LLMs in PSE is in its nascent stage and is constrained by challenges, such as data quality, interpretability, and scalability. Nonetheless, the application of LLMs is expected to foster significant progress in PSE research, including chemical process design, hybrid process modeling, autonomous control systems, and multiscale optimization. This review aims to provide an introduction to LLM and GenAI and explore how LLMs have been utilized to overcome the traditional limitations of PSE research by offering innovative digital solutions, such as data enrichment and seamless integration with digital twins. This study highlights the potential of LLMs to transform PSE methodologies and lead the field into a new era of Chemical Engineering 4.0.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 12","pages":"2787 - 2808"},"PeriodicalIF":3.2,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145181480","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}

{"title":"Large-Scale Batch (1 m2) Production and Mechanical Assessment of Mushroom Mycelium Mats","authors":"Yong-Hyeon Jeong,&nbsp;Ho-Seong Im,&nbsp;Chanwook Park,&nbsp;Jaesik Seo,&nbsp;Yongtae Joo,&nbsp;Hyun-Jae Shin","doi":"10.1007/s11814-025-00522-0","DOIUrl":"10.1007/s11814-025-00522-0","url":null,"abstract":"<div><p>The development of sustainable leather materials from mushroom mycelium is considered due to ethical issues in animal leather production and environmental pollution problems. It has been confirmed that mushroom mycelium can form a biofilm, the so-called mycelium mat, resulting in a leather-like texture. Therefore, large-scale production of mycelium mats can be essential in future applications in the leather and fashion industry. In this study, for the production of the mycelium mat, environmental factors, including light, temperature, humidity, and CO₂ levels, are to be controlled, and the height of the solid medium filled in the culture tray was also examined. Batch-wise large-scale production was performed on a large culture tray (1 m²), and suitable culturing conditions for producing mycelium mats were suggested as follows: 27–28 ℃ of the temperature range, 90–95% of the humidity range, and 1100–1200 ppm of the CO₂ level. Large-scale mycelium mats of several different strains of mushrooms were successfully produced. The mechanical properties were measured after dividing it into nine areas to ensure the quality uniformity of the mats produced. This mycelium culture and large-scale production study will be a stepping stone for future research on the continuous and economical production of sustainable leather alternatives.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 12","pages":"2809 - 2819"},"PeriodicalIF":3.2,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-025-00522-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145181467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Process Simulation of a Dual Fluidized Bed Ca-Looping Biomass Gasifier with CuO/CaO for Enhanced Hydrogen Production","authors":"Han Saem Park,&nbsp;Hyun Jun Park,&nbsp;Ha Eun Lee,&nbsp;Seung Seok Oh,&nbsp;Jester Lih Jie Ling,&nbsp;Bhanupratap Singh Solanki,&nbsp;Hyungwoong Ahn,&nbsp;See Hoon Lee","doi":"10.1007/s11814-025-00521-1","DOIUrl":"10.1007/s11814-025-00521-1","url":null,"abstract":"<div><p>In this study, H₂ production through Calcium-Looping (Ca-Looping) gasification process using biomass feedstocks, including wood waste (WW), cow manure (CM), and biocrude (BC), was investigated. This novel system employed a dual fluidized bed system, comprising a gasifier reactor with a mixture of CuO and CaO fluidized by steam, and a regenerative air reactor. Hydrogen production was investigated as a function of variations in key operating parameters, including gasification temperature (<i>T</i>_g), equivalence ratio (E/R), steam mass flow rate (<i>M</i>_steam), and CaO circulation rate (<i>C</i>_CaO). Enhancement in hydrogen production was not observed at temperatures above 700 °C for all feedstocks, which was confirmed to be due to the deactivation of the carbonation reaction. An increasing CO₂ volume fraction and decreasing H₂ volume fraction in the synthesis gas were observed as the <i>E</i>/<i>R</i> ratio increased. Additionally, H₂ production increased continuously with higher steam flow rate. CO₂ capturing capacity, through carbonation of CaO increased with CaO circulation rates, reaching a plateau as the circulation rate reach above 100 kg/hr. These findings highlight the potential of the biomass Ca-Looping gasification process to produce high-purity H₂ while significantly reducing CO₂ emissions, positioning it as a promising pathway for sustainable energy production.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 10","pages":"2201 - 2216"},"PeriodicalIF":3.2,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168026","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}

{"title":"Lauroyl Lysine Continuous Injection Synthesis via Schotten–Baumann Reaction pH Optimization as Synthetic Amino Acid Derivative","authors":"Min Jeong Park,&nbsp;Tae Yeon Kim,&nbsp;Sang Jun Lee,&nbsp;Seo Yeon Jung,&nbsp;Shin Hum Cho","doi":"10.1007/s11814-025-00517-x","DOIUrl":"10.1007/s11814-025-00517-x","url":null,"abstract":"<div><p>This research focuses on identifying optimal synthesis conditions for lauroyl lysine, an amino acid derivative widely used in the cosmetics industry. The effect of pH on reaction rate and selectivity was quantitatively assessed through systematic variations within the range between pH 10 and pH 13, and the reaction conditions were subject to a continuous slow precursor injection technique as alternative to batch-type reaction. This results in optimal pH conditions and the establishment of a synthesis via Schotten–Baumann reaction process on a laboratory scale, yielding from 97.77 to 55.20% range. This study will contribute to maximizing the industrial scale-up synthesis efficiency of lauroyl lysine and expanding its application potential in the cosmetics industry, reducing manufacturing costs and expect the possibility of commercial production.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 12","pages":"3009 - 3019"},"PeriodicalIF":3.2,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145181494","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}

{"title":"Inherent Safety Design for LNG Terminals Through Risk Assessment","authors":"Cheolhee Yoon,&nbsp;Boo-Hyoung Bang,&nbsp;Keun-won Lee,&nbsp;Seungho Jung,&nbsp;Mimi Min","doi":"10.1007/s11814-025-00485-2","DOIUrl":"10.1007/s11814-025-00485-2","url":null,"abstract":"<div><p>Achieving carbon neutrality is a critical global objective, driving efforts to transition toward clean energy sources such as hydrogen. However, the full-scale adoption of a hydrogen economy remains constrained by technological and economic challenges. During this transitional period, the industrial demand for Liquefied Natural Gas (LNG), a relatively low-carbon fuel capable of co-firing with hydrogen, is expected to rise significantly. Consequently, research on the safety of LNG terminal plants, which handle large volumes of LNG, has become urgent. These plants operate with hazardous substances under high-temperature and high-pressure conditions, making them prone to severe risks such as leaks or explosions. In particular, petrochemical facilities, characterized by complex processes and the storage of substantial quantities of hazardous chemicals, are susceptible to accidents that can result in significant human and property damage. It is, therefore, essential to predict and calculate the potential impact of accidents in advance and incorporate safety measures into the design phase to minimize damages. This study aimed to address these challenges by quantitatively assessing the risks associated with LNG terminals and proposing a framework for optimized safety design through isolable sections. A virtual LNG terminal model was divided into five isolable sections, and various accident scenarios were evaluated through CFD simulations. The findings highlighted the variability of explosion impacts across sections and underscored the importance of spatial configurations and operational conditions in determining safety outcomes. By recommending the optimization of protection performance through section isolation, this study provides valuable insights for enhancing the safety and resilience of LNG facilities. These results contribute to establishing more effective safety designs from the initial plant development stage, thereby minimizing accident impacts and supporting the sustainable transition to cleaner energy systems.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 11","pages":"2713 - 2728"},"PeriodicalIF":3.2,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923207","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}

{"title":"Monitoring of Liquid Based Microbial Bioplastic Degradation by Differential Scanning Calorimetry (DSC)","authors":"Su Hyun Kim,&nbsp;Yebin Han,&nbsp;Gaeun Lim,&nbsp;Jeong Chan Joo,&nbsp;Shashi Kant Bhatia,&nbsp;Jungoh Ahn,&nbsp;Woo-Young Jeon,&nbsp;Hee Taek Kim,&nbsp;Yung-Hun Yang","doi":"10.1007/s11814-025-00496-z","DOIUrl":"10.1007/s11814-025-00496-z","url":null,"abstract":"<div><p>To monitor the degradation of bioplastics by microbes and enzymes, conventional weight-based and chromatography-based methods have been commonly used. However, these approaches require time-consuming sample preparation and often suffer from low reproducibility from different recovery method. As an alternative, this study proposes a quantitative approach using differential scanning calorimetry (DSC), a technique traditionally used to analyze the thermal properties of polymers. This method directly applies lyophilization without washing and drying samples and uses DSC analysis to quantify the enthalpy change (ΔH) at the melting temperature of bioplastic residues. When PHB films were analyzed after optimizations, a strong linear correlation (R² &gt; 0.99) between ΔH and film mass was observed across all cases. Compared to conventional, the DSC method showed less than 3.5% deviation from the gas chromatography (GC) method, contrary to the weight-based method showing more than 14% difference from the GC-based method. This method expands the ability to quantify different types of bioplastics such as poly(butylene succinate) (PBS) and polycaprolactone (PCL), simultaneously. This research highlights DSC as a simple, reproducible, and broadly applicable approach for monitoring bioplastic degradation quantitatively, offering a promising alternative to labor-intensive conventional methods.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 11","pages":"2601 - 2611"},"PeriodicalIF":3.2,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923255","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}

{"title":"Strong Enhancement on the Degradation of Organic Contaminants by Base-Activated Peroxymonosulfate in Phosphate Buffer Solution","authors":"Mengqi Zhang,&nbsp;Lingbin Wu,&nbsp;Hongfang Ma,&nbsp;Shunjia Chen,&nbsp;Zhijie Wu,&nbsp;Linfeng He,&nbsp;Jiale Fan,&nbsp;Sheng Li,&nbsp;Bo Sun,&nbsp;Qingfeng Cheng,&nbsp;Haoqiang Tan,&nbsp;Jing Zou","doi":"10.1007/s11814-025-00499-w","DOIUrl":"10.1007/s11814-025-00499-w","url":null,"abstract":"<div><p>Alkali-activated peroxymonosulfate (PMS) exhibits low activation efficiency and high alkalinity consumption, and these limitations significantly hinder its practical application. In this study, it was established that the incorporation of phosphate buffered (PBS) could markedly increase the oxidation proficiency of Orange II (AO7) and Rhodamine B by PMS within the range of pH 6–11. At pH 9.0, the degradation efficiencies of AO7 and RhB in the PBS/PMS process are 24.4-fold and 16.5-fold higher than those in the alkali-activated PMS process, respectively. These efficiencies surpass those of previously reported alkali-activated PMS systems enhanced by pyrophosphate and NaHCO₃. The radical quenching studies demonstrated that SO₄^•− and •OH were the main responsible species in base-activated PMS in phosphate buffer solution rather than O₂^•− and ¹O₂ which have been previously reported. Furthermore, the predominant active species varied significantly under varying pH conditions. The incorporation of phosphate could markedly increase the oxidation proficiency of AO7 and RhB by PMS within the range of pH 6 to pH 11, with highest oxidation constant achieved at pH 9. The AO7 degradation rates increased with increasing phosphate concentrations, PMS doses, as well as higher temperature. The high removal efficiency of residue phosphate by CaCl₂ demonstrated that this method could be used as a pretreatment for wastewater treatment. The findings suggest that experiments on PMS-based advanced oxidation processes conducted in phosphate buffer solution (PBS) should account for the catalytic role of PBS in PMS activation.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 10","pages":"2321 - 2331"},"PeriodicalIF":3.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163695","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}