Korean Journal of Chemical Engineering最新文献

{"title":"Effects of the Electrode Supporter Structures for Achieving Optimum Hydrodynamic Performance for a Zero-gap Alkaline Water Electrolysis Cell","authors":"Mazyar Dawoodian,&nbsp;Jae Un Jeong,&nbsp;In Kee Park,&nbsp;Jun Hyun Lim,&nbsp;Chi Hoon Park,&nbsp;Chang Hyun Lee","doi":"10.1007/s11814-026-00664-9","DOIUrl":"10.1007/s11814-026-00664-9","url":null,"abstract":"<div>\u0000 \u0000 <p>Water electrolysis, a hydrogen energy production method, can generate pure hydrogen and oxygen without emitting carbon-based molecules; thus, it is an environmentally friendly technology. Zero-gap alkaline water electrolyzer (ZGAWE) can produce hydrogen economically and efficiently. Here, we developed a ZGAWE hydrodynamic model and investigated the changes in cell performance according to the input power and different electrode supporter structures, such as wavy mesh, foam, and serpentine, under actual operating conditions. Owing to its high hydrogen conversion rate and low operation costs, the wavy mesh supporter design had the highest efficiency. Additionally, as the system size increased, the operation costs decreased; thus, the wavy mesh supporter design was also applicable for large-scale ZGAWE systems. Foam supporter flow field design shows a very similar trend and can compete with the wavy mesh supporter. Conversely, different hydrodynamic performance and high operation costs of the serpentine flow field design made it unsuitable for the ZGAWE system, but it could be used for the proton/anion exchange membrane water electrolyzer. The results provide significant insights into the hydrodynamic effects to operate ZGAWEs at different cell voltages; additionally, the results can be used to develop high-performance water electrolyzer systems.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 5","pages":"1447 - 1460"},"PeriodicalIF":3.2,"publicationDate":"2026-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558822","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":"Temperature Effects on Reaction Kinetics of Hydrogenated Amorphous Carbon Deposition in Inductively Coupled C2H2 Plasmas","authors":"Jie Li,&nbsp;Hyeonjin Choi,&nbsp;Heeyeop Chae","doi":"10.1007/s11814-025-00635-6","DOIUrl":"10.1007/s11814-025-00635-6","url":null,"abstract":"<div><p>Although extensive research has been conducted on the plasma deposition of hydrogenated amorphous carbon (<i>a</i>-C: H) thin films, studies directly linking <i>a</i>-C: H deposition to plasma characteristics and exploring the reaction kinetics remain limited. In this work, the radical and ion densities were correlated with the <i>a</i>-C: H deposition rate, and different deposition kinetics were proposed for different temperature ranges. The <i>a</i>-C: H thin films were deposited in C₂H₂ plasmas at various plasma source powers and pressures across different locations within a tubular inductively coupled reactor. The ion densities of the plasmas were measured using an ion probe, while the relative densities of CH and C₂ radicals were determined via optical actinometry. The <i>a</i>-C: H deposition rate increased with elevated substrate temperature and ion density when the temperature was below 38 °C. This suggests that the deposition process was primarily limited by surface reaction, which was enhanced by both increased temperature and ion bombardment. The activation energy for <i>a</i>-C: H deposition was found to be 1.47 eV in bias-free, inductively coupled C₂H₂ plasma. The deposition rate was proportional to the densities of CH and C₂ radicals at the surface temperature above 38 °C, indicating that the transport of carbon-containing radicals to the film surface became the limiting factor. Based on these observations, an <i>a</i>-C: H deposition model, comprising mass transfer and surface reaction processes, was proposed. The <i>sp</i>²/<i>sp</i>³ ratios of the <i>a</i>-C: H thin films were also studied, characterized by the intensity ratio of the D and G peaks (I_D/I_G) in the Raman spectra. The I_D/I_G ratio increased as the CH radical density decreased, indicating a higher <i>sp</i>²/<i>sp</i>³ ratio.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 5","pages":"1403 - 1413"},"PeriodicalIF":3.2,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147559267","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":"A Comprehensive Review, Future Possibilities and the Impact of Sustainable Battery Technologies for Practical Applications","authors":"Maryam Sadat Kiai,&nbsp;Navid Aslfattahi,&nbsp;Hikmet Karakoc,&nbsp;Nilgun Baydogan,&nbsp;Lingenthiram Samylingam,&nbsp;Kumaran Kadirgama,&nbsp;Chee Kuang Kok,&nbsp;Hana Schmirlerova","doi":"10.1007/s11814-025-00642-7","DOIUrl":"10.1007/s11814-025-00642-7","url":null,"abstract":"<div>\u0000 \u0000 <p>Recent studies have concentrated on the feasibility of several type of batteries including silicon-based, thin film, bio based and flexible graphene-based batteries to expedite the commercial deployment of high-energy batteries. In the field of advanced battery technologies, it is essential to allocate additional research resources towards the investigation of innovative silicon-based, graphene based, bio-based and thin film batteries. This approach is crucial for achieving elevated volumetric energy density. A key aspect of this endeavor is the strategic design of novel environmentally friendly components alongside with employing theoretical simulations and in situ characterization techniques to examine the energy storage mechanisms to gain a comprehension of the relationship between material structure and its performance. This review study explores futuristic battery technology including silicon-based anodes, polymer-based batteries, ceramic batteries, 3D printed batteries and graphene-based batteries for the first time. All the above-mentioned battery technologies could be suitable for environmentally sustainable methods for large-scale production, even if this necessitates minor reductions in energy density. This review tries to highlight the technological feasibility of newer batteries, which are essential to foster closer collaborations between academia and industry, as well as to invest more effort in streamlining synthetic processes and reducing costs, thereby facilitating a broader range of consumer electronics with significant societal implications. Silicon-based anodes, utilizing alloying and conversion mechanisms, have attracted considerable interest in research owing to their impressive theoretical capacities. The advancement of innovative techniques for thin film ceramics has paved the way for a new generation of lithium-ion batteries. The miniaturization of solid-state chemistries into film form is expected to enhance the diversity of lithium conductors. The bio-based batteries use extraction of organic molecules or polymers from sources such as green plants, algae, and bacteria has emerged as promising candidates for cathode, anode and electrolyte.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 5","pages":"1245 - 1275"},"PeriodicalIF":3.2,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-025-00642-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147559207","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":"A Review on Sustainable Microalgae-Based Approaches for CO2 Capture, Bioenergy, and Value-Added Products","authors":"Minal Deshmukh,&nbsp;Tanvi R. Kothawade,&nbsp;Aadil Pathan,&nbsp;Uma Sankar Behera,&nbsp;Jitendra S. Sangwai,&nbsp;Hun-Soo Byun","doi":"10.1007/s11814-025-00632-9","DOIUrl":"10.1007/s11814-025-00632-9","url":null,"abstract":"<div><p>The rising level of CO₂ concentration in the atmosphere that breached the 421ppm mark is a serious challenge to environmental and economic sustainability. Microalgae have emerged as a sustainable and efficient biological platform for CO₂ capture, offering rates 10–50 times higher than terrestrial plants. This work critically analyzes the recent developments concerning microalgae-based technology in CO₂ sequestration, generation of bioenergy, and synthesis of high-value products. Particularly, hybrid cultivation systems, nanotechnology-assisted carbon fixation, and artificial intelligent (AI) combined with bioreactor optimization demonstrated productivity up to a 45% increase in carbon intake and up to 60% improvement in lipid productivity. This study systematically assesses the cultivation mode (photoautotrophic, heterotrophic, mixotrophic), CO₂ feeding methods, harvesting, drying technology, cost-benefit, and lifecycle analysis. Challenges such as scalability, contamination, energy demands, and commercialization hurdles are discussed. A key novelty of this review is the integration of recent trends in genetic engineering, circular bioeconomy strategies, and interdisciplinary approaches for enhancing process efficiency. In addition, it points out major blind spots in existing systems, including low biomass yields in open ponds and underdeveloped hybrid photobioreactors. This review offers an inclusive plan of industrial implementation, promoting interdisciplinary cooperation between academia and industry, and innovative policy to face the action plan of implementation of microalgae technologies to impact climate change mitigation.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 5","pages":"1277 - 1314"},"PeriodicalIF":3.2,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147559354","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 Fractional Precipitation with Glass Beads for Purification of Paclitaxel from Biomass of Taxus Chinensis","authors":"Min-Ju Yeon,&nbsp;Jin-Hyun Kim","doi":"10.1007/s11814-025-00637-4","DOIUrl":"10.1007/s11814-025-00637-4","url":null,"abstract":"<div><p>In this study, the precipitation efficiency, kinetics, and mechanism of the fractional precipitation for the purification of paclitaxel were investigated using glass beads to increase the surface area to volume ratio of the reaction solution (S/V). The yield of paclitaxel increased proportionally to the S/V to the power of 0.1 (<span>(:Ypropto:{left(S/Vright)}^{0.1})</span>). The maximum yield (~ 92%) was achieved after 10 min of precipitation at the optimal S/V (0.21 mm^− 1). This yield was a 2.28-fold increase compared to conventional fractional precipitation. This precipitation method was efficient because hydrogen bonds are formed between the glass bead molecules and paclitaxel molecules during fractional precipitation, and the glass bead surface acts as a heterogeneous nucleation site. The paclitaxel purity increased by approximately 20% as the precipitation time increased, but it was hardly affected by S/V. By applying the precipitation data to a pseudo-second-order model, a model was proposed that can predict the surface area to volume ratio of the reaction solution (S/V) and the concentration of precipitated paclitaxel (C_t) as a function of the operating time (t). Furthermore, a good fit between the experimental and predicted data was confirmed.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 5","pages":"1367 - 1378"},"PeriodicalIF":3.2,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558869","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":"Multi-objective Process Parameter Optimization of Integrated SCV-IFV LNG Regasification System Using Genetic Algorithm","authors":"Lin Wang,&nbsp;Hailong Luo,&nbsp;Tingxia Ma,&nbsp;Hualin Zheng,&nbsp;Wei Li","doi":"10.1007/s11814-025-00622-x","DOIUrl":"10.1007/s11814-025-00622-x","url":null,"abstract":"<div><p>LNG regasification technology in natural gas applications mostly involves vaporizers heating liquefied natural gas and converting it into gaseous natural gas. Accurate evaluation of heat transfer characteristics is of great value for the optimal design of advanced regasification devices such as submerged combustion vaporizer (SCV) and intermediate fluid vaporizer (IFV). It is observed that the submerged combustion vaporizer (SCV) system has the problems of high energy demand and high operating cost. In contrast, the intermediate fluid vaporizer (IFV) system has lower energy consumption and cost, but is greatly affected by environmental factors. Considering the advantages and disadvantages of these two methods, this paper proposes a hybrid operation method combining IFV and SCV to reduce the energy consumption and operation cost of LNG regasification. In addition, the process simulation model is established by HYSYS software, and combined with genetic algorithm, some operating parameters are optimized by using unit energy consumption, unit cost and total natural gas output as objective functions. The results show that the combination of IFV and SCV can significantly reduce energy consumption and cost compared with the use of SCV alone. This study provides a new idea for understanding the LNG regasification system and provides a reference for the efficient operation of SCV and IFV.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 5","pages":"1461 - 1479"},"PeriodicalIF":3.2,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147559586","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":"Multiple Approaches in Controlling Sewer Biofilms to Mitigate Pathogen Spread","authors":"Meseret Araya Tadele,&nbsp;Byung-Soo Chun,&nbsp;Fazlurrahman Khan","doi":"10.1007/s11814-025-00626-7","DOIUrl":"10.1007/s11814-025-00626-7","url":null,"abstract":"<div>\u0000 \u0000 <p>Sewer system biofilm development raises significant operational and public health concerns, including decreased hydraulic capacity, increased maintenance costs, infrastructure corrosion, and the spread of pathogenic microorganisms. This review critically discusses both traditional and novel methods for controlling the development of sewer biofilms. Traditional methods involving chemical biocides and disinfectants are discussed, along with their effectiveness and limitations, particularly environmental concerns and the development of microbial resistance. Physical procedures, including mechanical cleaning and pipe scrubbing, have been evaluated for their efficacy and potential side effects. Emerging methods involving antimicrobial coatings (such as silver nanomaterials and copper), enzymatic treatment of biofilm matrix components, and the application of metal-resistant materials to biofilms (including hydrophobic and superhydrophobic materials) have been examined. Multi-strategic, combined approaches are excellent tools for addressing the multifaceted problem of sewer biofilms. The review highlights key gaps for continued work and suggests directions for studies to develop more viable, environmentally friendly methods for controlling sewer biofilms. By integrating recent developments, the review offers practical recommendations for managing sewer biofilms to protect sewer infrastructure and public health.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 5","pages":"1167 - 1202"},"PeriodicalIF":3.2,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558894","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":"Tailoring MXenes for Effective Water Purification: Recent Advances in Material Properties and Environmental Applications","authors":"Simin Janitabardarzi,&nbsp;Minoo Shariati,&nbsp;Mika Sillanpää","doi":"10.1007/s11814-025-00629-4","DOIUrl":"10.1007/s11814-025-00629-4","url":null,"abstract":"<div><p>The unique properties of MXenes, including outstanding electrical, mechanical, optical, thermal, and magnetic characteristics, make them highly suitable for various emerging environmental protection applications. Despite growing interest in their potential for water treatment, there is a lack of comprehensive review articles that detail the chemistry underlying their decontamination efficacy. This review provides an exhaustive overview of recent advances in the environmentally sustainable use of MXenes for water purification. It covers techniques such as surface functionalization, the creation of synergistic composite structures with organic or inorganic agents, and the tailored design of MXenes to optimize properties like interlayer spacing, work function, and band gap energy for water treatment applications. The review illustrates how deliberate material design enhances MXenes’ effectiveness in bacterial disinfection, removal of organic pollutants including synthetic dyes and antibiotics, and heavy metal remediation. These insights advance fundamental understanding and support the development of next-generation water treatment technologies.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 5","pages":"1315 - 1353"},"PeriodicalIF":3.2,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558868","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":"Char Contribution as Heterogeneous Reaction To NO Reduction During Rice Husk Reburning in a Drop Tube Furnace","authors":"Seungtae Oh,&nbsp;Jin Ki Lee,&nbsp;Myung Chul Shin,&nbsp;Ji Wan Kim,&nbsp;Hyuk Jin Jang,&nbsp;Seong-Ju Kim","doi":"10.1007/s11814-025-00639-2","DOIUrl":"10.1007/s11814-025-00639-2","url":null,"abstract":"<div><p>Biomass reburning has emerged as a promising method for reducing nitrogen oxide (NO) emissions. However, a comprehensive understanding of reburning reactions using biomass remains limited. In particular, the char contribution to NO reduction requires further clarification, especially when using rice husk. This study investigates the contribution of rice husk char to NO reduction during the reburning process in a drop-tube furnace. The effects of reaction temperature, NO concentration, and equivalence ratio on the contribution of the homogeneous and heterogeneous reactions were analyzed. Results showed that increasing the reburning temperature enhanced the heterogeneous reaction by promoting CO release from the char surface, thereby increasing the char’s contribution to the overall reburning reaction. As the initial NO concentration increased, NO reduction increased for both rice husk and its char; however, due to the limited amount of fuel for reburning reactions, the rate of increase in NO reduction decreased. The homogeneous reaction decreased above a certain equivalence ratio because oxygen limitation reduced the conversion of intermediate species into N₂. In contrast, the char reaction increased and eventually reached saturation with an increasing equivalence ratio, further enhancing char contribution. These findings provide valuable insights for optimizing biomass reburning systems, particularly by clarifying the distinct role and operational dependencies of heterogeneous char-NO reactions.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 5","pages":"1437 - 1446"},"PeriodicalIF":3.2,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558650","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":"MgO2-Mediated Alkaline Activation of Peroxymonosulfate (PMS) for Acetaminophen Degradation","authors":"Ha-Won Lee,&nbsp;Won-Gune Jeong,&nbsp;Jong-Gook Kim,&nbsp;Kitae Baek","doi":"10.1007/s11814-026-00645-y","DOIUrl":"10.1007/s11814-026-00645-y","url":null,"abstract":"<div>\u0000 \u0000 <p>Peroxymonosulfate (PMS) alkaline activation has gained considerable interest in advanced oxidation processes for wastewater treatment due to its reduced secondary pollution, high economic efficiency, and strong degradation capability. This study hypothesized that a gradual increase in pH would improve and maintain the alkaline activation of PMS more than rapid pH shift. Magnesium peroxide (MgO₂)-based PMS system was proposed to control the alkaline activation of PMS. Under equal molar dosage, the MgO₂/PMS system removed 60.7% of acetaminophen (ACT), while NaOH/PMS and CaO₂/PMS systems oxidized 43.3% and 18.2% of ACT, respectively. Although the initial reaction rate in CaO₂/PMS system was faster than that in the MgO₂/PMS system, the MgO₂/PMS system ultimately demonstrated greater overall ACT removal, even with higher PMS consumption. These results indicate that MgO₂-based gradual activation enhances pollutant removal and prolongs the persistence of reaction. Furthermore, the MgO₂-PMS system showed less interference by co-existing anions, including Cl⁻, SO₄²⁻, NO₃⁻, HCO₃⁻, and HPO₄²⁻. In the system, singlet oxygen (¹O₂) and superoxide radical (O₂˙) were the dominant reactive species responsible for degradation of ACT. In conclusion, the MgO₂/PMS system proposed in this study is a promising alternative for wastewater treatment due to its simple process, efficient PMS utilization, high adaptability, and significantly enhanced pollutant removal via gradual alkaline activation.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 5","pages":"1391 - 1401"},"PeriodicalIF":3.2,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558859","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}