Korean Journal of Chemical Engineering最新文献

{"title":"Decoupling the Contributions of Alkali Metals and Volatiles to Synergistic Effects in Biomass-Petroleum Coke Co-Gasification","authors":"Zhiguo Shao,&nbsp;Meirong Ke,&nbsp;Jiaofei Wang,&nbsp;Xing Ma,&nbsp;Xiaofei Zhang,&nbsp;Xudong Song,&nbsp;Yonghui Bai,&nbsp;Peng Lv,&nbsp;Weiguang Su,&nbsp;Guangsuo Yu","doi":"10.1007/s11814-026-00751-x","DOIUrl":"10.1007/s11814-026-00751-x","url":null,"abstract":"<div><p>Understanding the interaction between petroleum coke and biomass during their co-gasification is important for advancing this technology. This study employed biomass pre-treatment to decouple the contribution of the alkali metals and volatiles on the interaction between biomass and petroleum coke. The results indicate that during the co-gasification, the antagonistic effect exists initially due to the high gasification reactivity of biomass. The synergistic effect is observed obviously in the later stage of gasification, and slightly increases as the process progresses. Biomass volatiles cause the antagonistic effect, whereas alkali metals significantly promote the synergistic effect with their effect peaking before declining. The introduction of alkali metals will interact with the surface functional groups of petroleum coke, forms active intermediates (such as C-O-K), which increases the number of active carbon sites, thereby enhancing the gasification of petroleum coke. The possible coupled influence mechanism between alkali metals and volatiles in the co-gasification of petroleum coke and biomass is also proposed.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 11","pages":"3063 - 3075"},"PeriodicalIF":3.4,"publicationDate":"2026-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903509","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":"Oxidation-based Strategies for the Environmental Remediation of Polycyclic Aromatic Hydrocarbons: A Comprehensive Review","authors":"Benjamin Tze-Wei Tan,&nbsp;Noor Hana Hanif Abu Bakar,&nbsp;Hooi Ling Lee","doi":"10.1007/s11814-026-00763-7","DOIUrl":"10.1007/s11814-026-00763-7","url":null,"abstract":"<div><p>Polycyclic aromatic hydrocarbons (PAHs) are hazardous environmental contaminants that have been detected in environmental matrices such as soil and water. The prolonged persistence of PAHs has brought significant impact to aquatic life and human health, which led to the remediation of these contaminants for the recovery of the environment to a normal state. This review emphasizes the assessment of various oxidation techniques: chemical, advanced oxidation processes (AOPs), photocatalytic degradation and sulfate radical (SR)-based AOPs towards the degradation of PAHs in both wastewater and soil environments in the past two decades. Along with those, the utilization of combined treatment processes is considered as a good option in overcoming the limitations of single oxidation processes, leading to near complete degradation of the contaminants. Additionally, the limitations and challenges encountered with the future outlooks for full-scale implementation of oxidation methods for the treatment of PAHs in wastewater and soil are highlighted in enabling simultaneous reduction in the environmental impact and long-term growth sustainability. According to current state-of-the-art studies, the potential of AOPs, photocatalysis and SR-based AOPs are investigated for the degradation of PAHs in wastewater and soil, while the applicability of chemical oxidation for the treatment of these contaminants in wastewater requires in-depth studies.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 12","pages":"3225 - 3253"},"PeriodicalIF":3.4,"publicationDate":"2026-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149162900","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":"Decomposition Characteristics of Doxycycline by Visible-Light-Active Tb/Mg-Doped TiO₂ Photocatalyst Prepared using Liquid-Phase Plasma Synthesis Method","authors":"Chan-Seo You,&nbsp;Jun-Young Noh,&nbsp;Yunju Choi,&nbsp;Sang-Chul Jung","doi":"10.1007/s11814-026-00755-7","DOIUrl":"10.1007/s11814-026-00755-7","url":null,"abstract":"<div><p>In this study, Tb/Mg-doped TiO₂ responsive to visible light was successfully prepared using a novel liquid-phase plasma synthesis method, and its photocatalytic activity was evaluated for use in the doxycycline decomposition reaction. The Ti-O-Tb and Ti-O-Mg bonds dispersed in the gaps of the TiO₂ lattice by doping formed a charge imbalance, which effectively separated the photogenerated electrons and holes and suppressed their recombination by generating more oxygen vacancies and Ti³⁺. The Tb/Mg-doped TiO₂ photocatalyst showed a decomposition reaction rate constant (k) that was up to twice that of bare TiO₂. When the two components were co-doped, the band gap energy and PL emission were weakened to the maximum because of the synergistic effect achieved, compared to doping with only one component. In addition, the photoelectric effect was enhanced by increasing electron-hole separation, suppressing recombination, and increasing the generation of strong oxidants. Tb/Mg-doped TiO₂ prepared by LPPSM was a reusable photocatalyst with stable photocatalytic activity, and doxycycline was estimated to be decomposed through two pathways: hydroxylation, deamination, decarboxylation, C–C bond cleavage, and a ring-opening reaction.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 11","pages":"3131 - 3141"},"PeriodicalIF":3.4,"publicationDate":"2026-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903508","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":"Elucidating the Catalytic Activity of Lattice-Distorted Double Perovskite Oxides as Bifunctional Electrocatalysts","authors":"Hyeocksu Kim,&nbsp;Hak Sakong,&nbsp;Sang-Hee Park,&nbsp;Joohyuk Park","doi":"10.1007/s11814-026-00770-8","DOIUrl":"10.1007/s11814-026-00770-8","url":null,"abstract":"<div><p>The overall performance of aqueous metal-air batteries is restricted by the inherently slow kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Therefore, the development of bifunctional oxygen catalyst is essential to overcome the kinetic limitations of ORR and OER. Among various metal oxide-based catalysts, perovskite oxides have received substantial interest because of their remarkable catalytic activity and structural stability in alkaline media. In the present work, we report a monoclinic double perovskite oxide (Pr₂MnCoO₆) as a highly active bifunctional electrocatalyst. The structural differences between Pr₂MnCoO₆ and the counterpart La₂MnCoO₆ were investigated using X-ray diffraction (XRD) and ex situ X-ray absorption spectroscopy (XAS). Interestingly, Pr₂MnCoO₆ showed increased local structural distortion and enhanced rock-salt ordering of the MnO₆ and CoO₆ octahedra compared with La₂MnCoO₆, which are suggested to influence electrocatalytic activities. Accordingly, Pr₂MnCoO₆ exhibited remarkable catalytic activities during ORR and OER, reducing reliance on noble-metal catalysts for oxygen electrocatalysis.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 12","pages":"3363 - 3373"},"PeriodicalIF":3.4,"publicationDate":"2026-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149162902","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":"Development of an Efficient Method for Removing Residual Solvents from Purified Paclitaxel by Ultrasound-Assisted Fractional Precipitation","authors":"Chaeyeon Lee,&nbsp;Yeji Kang,&nbsp;Min-Ju Yeon,&nbsp;Jin-Hyun Kim","doi":"10.1007/s11814-026-00768-2","DOIUrl":"10.1007/s11814-026-00768-2","url":null,"abstract":"<div><p>While prior research has predominantly focused on utilizing ultrasound to accelerate the precipitation of paclitaxel, this study uniquely investigates the integration of ultrasonic cavitation into fractional precipitation to optimize the efficiency of residual solvent removal from purified paclitaxel. The underlying mechanism reveals that increasing ultrasonic power (0–480 W) induces significant particle size reduction, thereby enlarging the specific surface area and accelerating solvent elution during the subsequent drying stage. Drying kinetics followed the Page model, with the methanol/water system demonstrating a higher drying rate constant than the acetone/water system. While 10 min of ultrasonic irradiation was insufficient to meet regulatory standards, a 20-min treatment successfully reduced residual solvents to within ICH Q3C guidelines (acetone &lt; 5,000 ppm; methanol &lt; 3,000 ppm) under optimized conditions (480 W for methanol; 380–480 W for acetone). These results validate ultrasonic cavitation as a high-efficiency auxiliary process specifically for rigorous solvent elimination, offering a quantitative basis for enhancing energy efficiency and reducing costs in large-scale paclitaxel production.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 12","pages":"3347 - 3361"},"PeriodicalIF":3.4,"publicationDate":"2026-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163005","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":"Performance Enhancement of Quasi-2D Perovskite Light-Emitting Diodes Based on Phase Control by Volatile Antisolvent Treatment","authors":"Seung-Beom Cho,&nbsp;Ju-Hyeong Kim,&nbsp;Chang-Xu Li,&nbsp;Il-Kyu K. Park","doi":"10.1007/s11814-026-00774-4","DOIUrl":"10.1007/s11814-026-00774-4","url":null,"abstract":"<div><p>Quasi-two-dimensional (quasi-2D) perovskites have emerged as promising candidates for high-performance light-emitting diodes (LEDs) due to their unique energy funneling mechanism. However, uncontrollable phase distribution during film crystallization often leads to excessive formation of lower <i>n</i>-phases, which hinder efficient charge transport and radiative recombination. In this study, we demonstrate a facile and effective strategy to modulate the phase distribution and crystallinity of quasi-2D perovskite PEA₂(FA_0.7Cs_0.3)_<i>n</i>−1Pb_nBr_3n+1 thin films using a volatile antisolvent, isopropyl alcohol (IPA). Structural and optical investigations revealed that the IPA treatment effectively suppressed the insulating lower <i>n</i>-phases (<i>n</i> &lt; 2) and promoted the growth of higher <i>n</i>-domains (<i>n</i> &gt; 3). Optimized IPA treatment of 100 <i>µl</i> yields a high photoluminescence quantum yield and balanced energy funneling, whereas excessive IPA (&gt; 300 <i>µl</i>) leads to phase oversimplification and morphological defects. Consequently, the green LED fabricated with 100 <i>µl</i> of IPA-treated emissive layer achieved a remarkable peak external quantum efficiency of 19.2% and high luminance, representing a nearly fivefold improvement over the pristine device. This work verifies the critical role of volatile antisolvent engineering in tailoring the energy landscape for high-efficiency perovskite optoelectronics.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 12","pages":"3337 - 3346"},"PeriodicalIF":3.4,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163004","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":"Surface Modification in Catalytic Ceramic Membranes: Design Strategies, Mechanistic Insights, and Engineering Feasibility","authors":"Zidong Zhang,&nbsp;Hao Wu,&nbsp;Siyu Duan,&nbsp;Yuanling Li,&nbsp;Jun Ma,&nbsp;Shaoqing Guo","doi":"10.1007/s11814-026-00773-5","DOIUrl":"10.1007/s11814-026-00773-5","url":null,"abstract":"<div><p>Ceramic membranes have attracted considerable attention for the treatment of complex industrial wastewater due to their superior thermal stability, mechanical strength, and chemical resistance. However, their practical application remains constrained by membrane fouling and the inherent permeability-selectivity trade-off, and insufficient coupling between separation and catalytic reactions. Surface modification has emerged as a key design strategy to address these challenges by regulating pore structure, tuning interfacial physicochemical properties, and introducing catalytic active sites. This review systematically summarizes recent advances in material selection, substrate design, and surface modification strategies for catalytic ceramic membranes, with emphasis on coating technologies, elemental doping, in situ growth, and surface grafting. The underlying mechanisms of these methods in regulating pore size, wettability, and catalytic functionality are critically discussed. In addition, a multiscale computational framework is introduced to elucidate the coupling among structure, mass transport, and interfacial reactions. Computational fluid dynamics (CFD) is used to describe macroscopic flow behavior and pollutant transport, while density functional theory (DFT) provides insights into microscopic reaction pathways. Furthermore, the engineering feasibility of catalytic ceramic membranes is systematically evaluated from life cycle and techno-economic perspectives. Overall, this review highlights that future progress should shift from empirical modification toward mechanism-guided, cross-scale, and sustainability-oriented membrane design. Future research should focus on strengthening multiscale model coupling, improving long-term catalytic stability, and developing low-carbon, scalable fabrication strategies, thereby bridging the gap between mechanistic understanding and practical implementation of catalytic ceramic membranes.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 12","pages":"3191 - 3223"},"PeriodicalIF":3.4,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163001","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":"Fabrication of Reduced Graphene Oxide-PVDF Composite Membranes via In-Situ Reduction for Enhanced Desalination by Membrane Distillation","authors":"Yanqiang Du,&nbsp;Yanyan Dou,&nbsp;Yukun Li,&nbsp;Weiying Li","doi":"10.1007/s11814-026-00731-1","DOIUrl":"10.1007/s11814-026-00731-1","url":null,"abstract":"<div><p>Water scarcity presents a critical challenge to global sustainable development. Membrane distillation (MD) is a promising technology for desalination, yet its performance is often limited to the properties of the hydrophobic membrane. This study reports a facile in-situ reduction strategy to fabricate reduced graphene oxide (RGO)-polyvinylidene fluoride (PVDF) composite membranes for enhanced direct contact MD (DCMD). The composite membranes were designed for robust desalination and potential treatment of hypersaline wastewater. Hydrazine hydrate was employed as the reducing agent within the PVDF casting solution to simultaneously induce phase inversion and the reduction of GO to RGO. The effects of RGO loading on membrane properties were systematically investigated. The optimized membrane (R-4, with a GO precursor concentration of 9 g/L) exhibited a water contact angle of 105.13°, a liquid entry pressure of 2.05 bar, and a high permeate flux of 11.21 kg·m^–2·h^–1 when treating a 3.5 wt % NaCl solution at 60 °C, representing a 1.46-fold flux enhancement over a commercial PVDF membrane while maintaining stable salt rejection &gt; 99.9% during a 336-hour test. The improved performance is attributed to the synergistic effect of RGO, which simultaneously enhanced membrane hydrophobicity, refined the pore structure towards a more uniform distribution. This work demonstrates the great potential of the in-situ reduction strategy for developing high-performance and robust MD membranes for water treatment applications.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 11","pages":"2911 - 2927"},"PeriodicalIF":3.4,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903329","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":"S/N Co-Doped Activated Mesoporous Carbon derived from Protein-Rich Dried Pollock for Supercapacitor","authors":"Gyu-Jin Park,&nbsp;Hyo-Jin Ahn","doi":"10.1007/s11814-026-00759-3","DOIUrl":"10.1007/s11814-026-00759-3","url":null,"abstract":"<div><p>Biomass derived activated carbon has been emerged as alternatives to the depletable resources due to its sustainability and low cost. Large surface area and the optimal pore distribution of micropores, mesopores, and macropores are crucial for achieving high performance activated carbon. Thereby, we synthesized KOH activated carbon derived from protein-rich dried pollack which exhibits mesoporous structure with high surface area. We improved the electrolyte wettability and charge transfer capability by performing a doping process to introduce electrochemically active nitrogen species (graphitic N and pyrrolic N) and functional groups forming surface functionalities (C-N, C-S). 2SN-DP electrode shows the largest specific surface area (2764.8 m² g^-1), favorable pore distribution, nearly capacitive charge storage behavior (b ≈ 0.774), and superior specific capacitance (189.5 F g^-1 at a current density of 0.2 A g^-1 and 128.52 F g^-1 at 20 A g^-1). The outstanding performance of 2SN-DP electrode was attributed to the interactive effects of improved ion transportation and conductivity provided by KOH activation and N/S co-doping.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 11","pages":"3091 - 3101"},"PeriodicalIF":3.4,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903330","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":"M-FeCO3 (M = Ni, Co, Zn) Layered Double Hydroxides: A Multifunctional Materials for Enhanced Dye Sensitized Solar Cell and Advanced Oxidation Performance","authors":"Anjali Kumari,&nbsp;Savita Soni,&nbsp;Anupam Sharma,&nbsp;Ajay Sharma,&nbsp;Vivek Sheel,&nbsp;Shashi Kant Bhatia,&nbsp;Ranbir Singh,&nbsp;Anil Kumar Sharma","doi":"10.1007/s11814-026-00769-1","DOIUrl":"10.1007/s11814-026-00769-1","url":null,"abstract":"<div><p>In this study, M-FeCO₃ (M = Ni, Co, Zn) layered double hydroxide (LDH) was synthesized <i>via</i> a co-precipitation method and systematically characterised to evaluate their multifunctional performance in environmental remediation and solar energy applications. Structural analysis (XRD, FTIR, TEM, SEM with EDS, BET, UV-Vis, and XPS) confirmed well-ordered layered structures with high crystallinity, minimal defects, spherical like morphology, average particle size (5–15 nm), large specific surface areas (31.01-101.41 m²/g), tunable band gaps (1.98–2.50 eV), which enable superior charge separation. XPS analysis revealed the presence of Ni²⁺, Co²⁺/Co³⁺, Zn^2+, and Fe³⁺ species with strong M-O bonding in the synthesized LDH materials. Among the catalysts, ZnFe-LDH achieved complete sonophotocatalytic degradation of azo (BBY), triarylmethane (MG), and xanthene (EY) dyes, while exhibiting excellent reusability by retaining the high MG dye degradation efficiency over the three successive cycles. Radical scavenging and fluorescence studies confirmed ^•OH and O₂^•− as the dominant reactive oxygen species (ROS). Simultaneously, the synthesized LDH was incorporated as a photoanode in dye sensitized solar cell (DSSC), where ZnFe-LDH achieved a maximum photovoltaic efficiency of 3.06% attributed to its tunable band gap, higher surface area, and reduced recombination resistance. The integrated high performance in both sonophotocatalysis pollutant degradation and DSSC application underscores the multifunctional character of the LDHs materials. This dual use capability emphasizes their potential as sustainable, low-cost materials for integrated environmental remediation and solar energy conversion, aligning with green chemistry and circular-economy targets.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 12","pages":"3311 - 3335"},"PeriodicalIF":3.4,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163002","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}