Korean Journal of Chemical Engineering最新文献

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Activation of Peroxymonosulfate by Co–Al-LDH@PU Membrane for Efficient Removal of Tetracycline Hydrochloride Co - Al-LDH@PU膜活化过氧单硫酸盐高效去除盐酸四环素
IF 3.2 4区 工程技术
Korean Journal of Chemical Engineering Pub Date : 2025-05-24 DOI: 10.1007/s11814-025-00486-1
Xilin Liu, Fuwei Yang, Zhiqian Yao, Xuan Wang, Pengfei Liu, Jiayin Li, Hu Zhou
{"title":"Activation of Peroxymonosulfate by Co–Al-LDH@PU Membrane for Efficient Removal of Tetracycline Hydrochloride","authors":"Xilin Liu,&nbsp;Fuwei Yang,&nbsp;Zhiqian Yao,&nbsp;Xuan Wang,&nbsp;Pengfei Liu,&nbsp;Jiayin Li,&nbsp;Hu Zhou","doi":"10.1007/s11814-025-00486-1","DOIUrl":"10.1007/s11814-025-00486-1","url":null,"abstract":"<div><p>Immobilizing the activator on the carrier is an effective strategy to solve the difficult recovery and secondary pollution of activator in advanced oxidation process. In this study, cobalt–aluminum-layered double hydroxide (activator) was immobilized on a PU membrane carrier (Co–Al-LDH@PU membrane) by a hydrothermal in situ growth technique to form a recyclable peroxymonosulfate (PMS) activator. The as-prepared Co–Al-LDH@PU membrane exhibited an excellent ability to activate PMS for the removal of tetracycline hydrochloride (TC). 97.20% of TC (30 mg L<sup>−1</sup>) was eliminated with Co–Al-LDH@PU membrane (3 × 3 cm<sup>2</sup>) and 1.6 mM PMS at pH 5.5 in 30 min. Singlet oxygen (<sup>1</sup>O<sub>2</sub>) was verified as dominant reactive oxygen species responsible for TC removal via quenching tests. Mechanism investigation suggested that the redox cycle of Co<sup>2+</sup>/Co<sup>3+</sup> on the surface of Co–Al-LDH@PU membrane was crucial for PMS activation. Meanwhile, Co–Al-LDH@PU membrane displayed the ideal reusability and versatility.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 11","pages":"2583 - 2599"},"PeriodicalIF":3.2,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923237","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
A Low-Cost Support Derived Steel Slag with Amine Modification for Post-combustion CO2 Capture 胺改性低成本支撑型钢渣燃烧后CO2捕集研究
IF 3.2 4区 工程技术
Korean Journal of Chemical Engineering Pub Date : 2025-05-23 DOI: 10.1007/s11814-025-00482-5
Wenhao Liu, Qingcai Chen, Tengfei Xu
{"title":"A Low-Cost Support Derived Steel Slag with Amine Modification for Post-combustion CO2 Capture","authors":"Wenhao Liu,&nbsp;Qingcai Chen,&nbsp;Tengfei Xu","doi":"10.1007/s11814-025-00482-5","DOIUrl":"10.1007/s11814-025-00482-5","url":null,"abstract":"<div><p>To reduce the CO<sub>2</sub> capture cost of solid amine technology, more attention has been paid to the preparation of support materials from solid waste sources. We use basic oxygen furnace steel slag and blast furnace slag as raw materials. To obtain porous support materials, they are treated by acid etching and combined acid-base treatment, respectively. Then modified them using TEPA, finally successfully prepared two types of steel slag-based solid amine materials (BOFS-xTEPA and BFSX-xTEPA). The technologies of XRF, BET and SEM were used to characterize the materials. A homemade static CO<sub>2</sub> adsorption capacity tester was utilized to test the CO<sub>2</sub> adsorption capacity of the composites at 15% CO<sub>2</sub> and 85% air (wet). The optimal CO<sub>2</sub> adsorption capacity was explored by controlling the parameters in the material synthesis process. In terms of mechanism, a rational explanation for the pore formation of the two porous support materials was provided. Finally, the characteristics of the two steel slag-based solid amine preparation routes were analyzed from various perspectives. In comparison with solid amines derived from other solid waste sources, the advantages of this project were elucidated.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 8","pages":"1587 - 1598"},"PeriodicalIF":3.2,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169097","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
Efficient Synthesis of Magnetic-Silica Particles for Nucleic Acid Extraction in Diagnostics Based on Washing-Free Magnetic Fine Nanoparticles 基于免洗磁性纳米颗粒高效合成诊断核酸提取用磁性二氧化硅颗粒
IF 3.2 4区 工程技术
Korean Journal of Chemical Engineering Pub Date : 2025-05-22 DOI: 10.1007/s11814-025-00480-7
Ahadi Damar Prasetya, Grace Tj Sulungbudi,  Muflikhah,  Mujamilah, Andon Insani, Wildan Zakiah Lubis, Uus Saepulloh,  Yuliana, Ellis Dwi Ayuningsih
{"title":"Efficient Synthesis of Magnetic-Silica Particles for Nucleic Acid Extraction in Diagnostics Based on Washing-Free Magnetic Fine Nanoparticles","authors":"Ahadi Damar Prasetya,&nbsp;Grace Tj Sulungbudi,&nbsp; Muflikhah,&nbsp; Mujamilah,&nbsp;Andon Insani,&nbsp;Wildan Zakiah Lubis,&nbsp;Uus Saepulloh,&nbsp; Yuliana,&nbsp;Ellis Dwi Ayuningsih","doi":"10.1007/s11814-025-00480-7","DOIUrl":"10.1007/s11814-025-00480-7","url":null,"abstract":"<div><p>Magnetic-silica particles (MAGSi) have been widely used for rapid and large-scale nucleic acid extraction. However, the synthesis procedure normally involves washing steps, which will produce chemical waste and are time-consuming. In this study, we synthesized magnetic-silica fine particles by eliminating the washing step in magnetic nanoparticle production, thereby improving environmental sustainability and reducing synthesis time. First, magnetic nanoparticles (MNP) with sizes averaging around 100 nm (based on dynamic light scattering (DLS) data) were synthesized via co-precipitation continued with silica coating by the Stöber method, without washing the Fe<sub>3</sub>O<sub>4</sub> nanoparticles. Compared to the washed MNP, the unwashed MNP exhibited similar magnetization, with 47.85 emu/g for the unwashed and 47.10 emu/g for the washed MNP. The unwashed MNP was also successfully coated with silica, which resulted in a decrease in magnetization (5.00 emu/g) with a Fe<sub>3</sub>O<sub>4</sub>:SiO<sub>2</sub> mass ratio of 1:8. Compared to MAGSi synthesized by washed MNP, the unwashed MNP produced MAGSi with a larger size (~ 1700 nm compared to 320 nm based on the DLS data), more pronounced SiO<sub>2</sub> FTIR peaks, and lower magnetization due to a thicker SiO<sub>2</sub> layer. The MAGSi synthesized using the unwashed MNP is still effectively able to extract RNA and DNA from viral (SARS-CoV-2 and Canine Distemper Virus) and bacterial (Leptospira spp.) samples, as validated through PCR and qRT-PCR. This work introduces a practical and sustainable approach for synthesizing MAGSi, demonstrating their utility in nucleic acid extraction without compromising performance.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 8","pages":"1757 - 1768"},"PeriodicalIF":3.2,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167309","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
Exploring the Synergistic Effects of Fe3+ and Cu2+ Co-Doping in Hydrothermally Synthesized NiO Nanoparticles for Enhanced Supercapacitor Performance 探索水热合成NiO纳米颗粒中Fe3+和Cu2+共掺杂对增强超级电容器性能的协同效应
IF 3.2 4区 工程技术
Korean Journal of Chemical Engineering Pub Date : 2025-05-22 DOI: 10.1007/s11814-025-00483-4
Leekeshwer Upadhyay, S. Dhanapandian, S. Suthakaran,  BhoomikaYadav, Kamal K. Kar, Anju Dixit, Devendra Kumar, Suresh Sundaramurthy, Manikandan Ayyar
{"title":"Exploring the Synergistic Effects of Fe3+ and Cu2+ Co-Doping in Hydrothermally Synthesized NiO Nanoparticles for Enhanced Supercapacitor Performance","authors":"Leekeshwer Upadhyay,&nbsp;S. Dhanapandian,&nbsp;S. Suthakaran,&nbsp; BhoomikaYadav,&nbsp;Kamal K. Kar,&nbsp;Anju Dixit,&nbsp;Devendra Kumar,&nbsp;Suresh Sundaramurthy,&nbsp;Manikandan Ayyar","doi":"10.1007/s11814-025-00483-4","DOIUrl":"10.1007/s11814-025-00483-4","url":null,"abstract":"<div><p>The current experimental investigation emphases on the synthetization and characterizations of pure and Fe<sup>3+</sup>&amp; Cu<sup>2+</sup> co-doped [Ni<sub>0.5</sub>Fe<sub>0.02</sub>Cu<sub>0.06</sub>O<sub><i>x</i></sub>, Ni<sub>0.5</sub>Fe<sub>0.04</sub>Cu<sub>0.04</sub>O<sub><i>x</i></sub>, and Ni<sub>0.5</sub>Fe<sub>0.06</sub>Cu<sub>0.02</sub>O<sub><i>x</i></sub>] NiO nanoparticles (NPs) prepared through the hydrothermal method for improved supercapacitor performance. The synthesized NiO NPs were subjected to annealing at 800 °C and subsequently examined using a range of characterization methods.The XRD analysis verified the existence of a face-centered cubic (FCC) structure.The FESEM-EDAX confirmed successful dopant incorporation, revealing changes in surface morphology and particle size. An enhancementin the optical bandgap from 3.15 to 3.45 eV was found by the UV–Vis-DRS study, indicating the possibility of quantum confinement effects. The XPS provided insights into the surface chemistry, confirming the presence and concentrations of Ni<sup>2+</sup>, Fe<sup>3+</sup> and Cu<sup>2+</sup> ions in their respective chemical states. BET analysis indicated a reduction in the specific surface areafrom 18.59 m<sup>2</sup>/g (pure NiO) to 11.04 m<sup>2</sup>/g (co-doped NiO), but an increase in pore diameter facilitates ion diffusion. Electrochemical analysis showed that [Ni<sub>0.5</sub>Fe<sub>0.06</sub>Cu<sub>0.02</sub>O<sub><i>x</i></sub>] achieved a highest specific capacitance of 546 F g<sup>−1</sup>, at 10 mVs<sup>−1</sup>exhibiting significantly superior performance than pure NiO NPs.This study highlighted the potential of Fe<sup>3+</sup> and Cu<sup>2+</sup> co-doped NiO NPs in enhancing the electrochemical performance of supercapacitors through improved charge storage capacity and conductivity.Furthermore, cyclic stability testing revealed that the co-doped sample retained approximately 92.12% of its initial capacitance after 2000 charge–discharge cycles, demonstrating excellent long-term electrochemical durability. These results underline the importance of doping in optimizing material properties for next-generation energy storage devices, making these nanoparticles a promising candidate for sustainable and high-performance supercapacitors.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 10","pages":"2253 - 2273"},"PeriodicalIF":3.2,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168584","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
Three-Year Operational Failure Analysis and Reliability Assessment of an On-Site Hydrogen Refueling Station in Korea 韩国现场加氢站三年运行故障分析与可靠性评估
IF 3.2 4区 工程技术
Korean Journal of Chemical Engineering Pub Date : 2025-05-21 DOI: 10.1007/s11814-025-00474-5
Kyuhwan Hyun, Jongyeon Oh, Daewoong Jung, Hyoungwoon Song
{"title":"Three-Year Operational Failure Analysis and Reliability Assessment of an On-Site Hydrogen Refueling Station in Korea","authors":"Kyuhwan Hyun,&nbsp;Jongyeon Oh,&nbsp;Daewoong Jung,&nbsp;Hyoungwoon Song","doi":"10.1007/s11814-025-00474-5","DOIUrl":"10.1007/s11814-025-00474-5","url":null,"abstract":"<div><p>On-site hydrogen refueling stations (HRS) facilitate localized hydrogen production and supply, reducing dependence on external distribution networks. However, the limited deployment of on-site HRSs has hindered comprehensive analyses of their operational characteristics and equipment reliability due to a lack of long-term data and maintenance records. This study examines 3 years (2022–2024) of operational data from an on-site HRS, with a particular focus on 2023, to identify key failure modes, analyze downtime causes, and evaluate maintenance efficiency. Among the 74 recorded failures, the most frequent involved the degradation of the CO removal unit (PSA) in the reformer (23 cases, 31%), piston and gasket wear in the low-pressure compressor (13 cases, 18%), and refrigerant leakage in the chiller (5 cases, 7%). Reformer failures led to hydrogen purity issues, requiring an average maintenance time of 19.5 h, while compressor failures caused efficiency loss and gas leakage, necessitating 4.3 h of repair. Prolonged maintenance was primarily due to technological immaturity, including limitations in equipment performance and system reliability. Addressing these issues is essential to enhance the long-term reliability and operational efficiency of on-site HRSs, ensuring their viability for widespread adoption.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 11","pages":"2673 - 2684"},"PeriodicalIF":3.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923249","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
Efficient Removal of Acetaldehyde Using KOH-Activated Adsorbents Derived from Pyrolysis Char of Waste Cigarette Filters 废烟滤嘴热解炭koh活化吸附剂高效脱除乙醛
IF 3.2 4区 工程技术
Korean Journal of Chemical Engineering Pub Date : 2025-05-14 DOI: 10.1007/s11814-025-00478-1
Sang Eun Lee, Jung Eun Park, Jin Sun Cha, Huijeong Kim, Young-Min Kim
{"title":"Efficient Removal of Acetaldehyde Using KOH-Activated Adsorbents Derived from Pyrolysis Char of Waste Cigarette Filters","authors":"Sang Eun Lee,&nbsp;Jung Eun Park,&nbsp;Jin Sun Cha,&nbsp;Huijeong Kim,&nbsp;Young-Min Kim","doi":"10.1007/s11814-025-00478-1","DOIUrl":"10.1007/s11814-025-00478-1","url":null,"abstract":"<div><p>This study investigates the adsorption performance of activated carbon produced by activating cigarette filter pyrolysis char (CPC), derived from waste cigarette butts, with KOH. Pyrolysis of waste cigarette filters was conducted in a lab-scale reactor at 500 °C, producing gas, oil, and char with yields of 23.0%, 53.3%, and 23.7%, respectively. KOH activation was performed by mixing CPC with KOH at different ratios (1:1, 1:2, 1:3), followed by heating to 850 °C at a ramp rate of 5 °C/min. With increasing KOH content, the pore properties of the activated carbons improved significantly, with KOHCPC3 (CPC/KOH: 1:3) exhibiting a remarkable specific surface area of 2867 m<sup>2</sup>/g and a pore volume of 0.86 cm<sup>3</sup>/g. XPS analysis revealed the development of oxygen-containing functional groups due to KOH activation, which contributed to enhanced adsorption performance. The acetaldehyde adsorption capacity of the activated carbons increased with the KOH ratio, from 3.1 mg/g for CPC/KOH (1:1) to a maximum of 17.54 mg/g for CPC/KOH (1:3). These findings demonstrate the potential of cigarette pyrolysis char as a high-performance adsorbent for environmental and industrial applications.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 11","pages":"2637 - 2647"},"PeriodicalIF":3.2,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923151","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
Phytochemical and Biological Activity Evaluation of Globularia orientalis L 东方球的植物化学和生物活性评价
IF 3.2 4区 工程技术
Korean Journal of Chemical Engineering Pub Date : 2025-05-09 DOI: 10.1007/s11814-025-00472-7
Gülşen Güçlü, Burak Tüzün, Esra Uçar, Nuraniye Eruygur, Mehmet Ataş, Merve İnanır, Tansu Uskutoğlu, Belgin Coşge Şenkal
{"title":"Phytochemical and Biological Activity Evaluation of Globularia orientalis L","authors":"Gülşen Güçlü,&nbsp;Burak Tüzün,&nbsp;Esra Uçar,&nbsp;Nuraniye Eruygur,&nbsp;Mehmet Ataş,&nbsp;Merve İnanır,&nbsp;Tansu Uskutoğlu,&nbsp;Belgin Coşge Şenkal","doi":"10.1007/s11814-025-00472-7","DOIUrl":"10.1007/s11814-025-00472-7","url":null,"abstract":"<div><p><i>Globularia orientalis</i> L., a member of the Oleaceae family, is well-adapted to warm climates and a medicinal and aromatic plant traditionally used in treatment methods. In this study, 80% ethanol extract of <i>G. orientalis</i> was obtained, and its enzyme inhibition activity, antioxidant, antimicrobial, and anticancer activities were investigated. Additionally, the metabolic properties of the plant were elucidated through in silico methods. The data revealed '2-Propenoic acid, tridecyl ester' as the major component of this plant. Furthermore, <i>G. orientalis</i> exhibited potent antioxidant activity, and its cytotoxic activity against breast cancer was found to be robust. <i>G. orientalis</i>' chemical constituents were shown to have different actions against breast cancer protein (PDB ID: 1A52 and 1JNX), anti-oxidant protein (PDB ID: 1HD2), AChE enzyme protein (PDB ID: 4M0E), BChE enzyme protein (PDB ID: 5NN0), and α-Gly protein (PDB ID: 1R47). High-activity compounds were subjected to ADME/T analysis. To investigate how compounds in the plant <i>G. orientalis</i> L<i>.</i> affect human metabolism, ADME/T calculations were performed. In conclusion, these findings suggest the need for continued research through activity-guided fractionation to identify the compounds responsible for these effects in future studies. Lastly, the binding free energy of the molecule with the best docking score is computed using MM/GBSA techniques.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 11","pages":"2479 - 2495"},"PeriodicalIF":3.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-025-00472-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923190","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}
引用次数: 0
Harnessing Biodegradation Inhibitors for Cleaner Energy: Exploring Thymol and Sodium Fluoride in Sustainable Swine Manure Management 利用生物降解抑制剂实现清洁能源:探索百里香酚和氟化钠在猪粪可持续管理中的应用
IF 3.2 4区 工程技术
Korean Journal of Chemical Engineering Pub Date : 2025-05-08 DOI: 10.1007/s11814-025-00461-w
Yun-Ju Jeon, Tae-Hoon Kim, Eun-Sol Kim, Siyoung Seo, Yeo-Myeong Yun
{"title":"Harnessing Biodegradation Inhibitors for Cleaner Energy: Exploring Thymol and Sodium Fluoride in Sustainable Swine Manure Management","authors":"Yun-Ju Jeon,&nbsp;Tae-Hoon Kim,&nbsp;Eun-Sol Kim,&nbsp;Siyoung Seo,&nbsp;Yeo-Myeong Yun","doi":"10.1007/s11814-025-00461-w","DOIUrl":"10.1007/s11814-025-00461-w","url":null,"abstract":"<div><p>This study evaluated the effectiveness of thymol and sodium fluoride (NaF) as biodegradation inhibitors (BIs) in mitigating ammonia emissions from swine manure and their implications on anaerobic digestion (AD) for energy recovery processes. The core findings revealed that both thymol and NaF markedly lowered ammonia levels in swine manure during the 10 days of storage with NaF showing superior efficacy. The application of 50 mg of thymol/g volatile solids (VS) and 50 mg of NaF/g VS resulted in ammonia reductions of 62.1% and 46.7%, respectively, compared to that in the control (15.9 ± 0.6 mg NH<sub>4</sub><sup>+</sup>-N). The exploration of methane production highlighted that at concentrations up to 200 mg/L, neither thymol nor NaF negatively influenced AD, highlighting a dose-dependent relationship between BIs concentration and AD performance. By applying kinetic analysis, the inhibitory concentrations (IC) for thymol and NaF were determined to be IC<sub>30</sub> at 462.4 mg thymol/L and 335.8 mg NaF/L, respectively. BIs also significantly altered microbial diversity and its abundance, crucially affecting methane production potential. This research indicated the importance of carefully managing residual levels of BIs in swine manure to optimize the energy recovery process through AD, balancing the need for ammonia emission control without compromising methane output.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 8","pages":"1717 - 1726"},"PeriodicalIF":3.2,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163544","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
Effect of Si/Al2 Ratio Over Zeolite Beta in Steam and Direct Catalytic Cracking of n-dodecane 蒸汽沸石上硅铝比对正十二烷直接催化裂化的影响
IF 3.2 4区 工程技术
Korean Journal of Chemical Engineering Pub Date : 2025-05-07 DOI: 10.1007/s11814-025-00467-4
Arumugam Ramesh, Jun-Hyuk Ahn, Su-Un Lee, Kwang-Eun Jeong, Temur Khujamuratov, Tae-Wan Kim, Chul-Ung Kim
{"title":"Effect of Si/Al2 Ratio Over Zeolite Beta in Steam and Direct Catalytic Cracking of n-dodecane","authors":"Arumugam Ramesh,&nbsp;Jun-Hyuk Ahn,&nbsp;Su-Un Lee,&nbsp;Kwang-Eun Jeong,&nbsp;Temur Khujamuratov,&nbsp;Tae-Wan Kim,&nbsp;Chul-Ung Kim","doi":"10.1007/s11814-025-00467-4","DOIUrl":"10.1007/s11814-025-00467-4","url":null,"abstract":"<div><p>To achieve a higher light olefin yield for the catalytic cracking of kerosene and diesel, the effect of the Si/Al<sub>2</sub> ratio (SAR) of zeolite beta (BEA) in steam catalytic cracking (SCC) and direct catalytic cracking (DCC) of <i>n-</i>dodecane (<i>n-</i>C12) was investigated in a fixed bed reaction system over zeolite beta with SAR in a range of 25–360. The catalysts were characterized by XRD, NH<sub>3</sub>-TPD, pyridine FT-IR, N<sub>2</sub>-sorption, SEM, and TGA. In both DCC and SCC, <i>n-</i>C12 conversion showed a tendency to decrease linearly as the BA (Brønsted acidity) of the zeolite beta catalyst increased. Both the light olefin yield and the light olefin/paraffin ratio in SCC were higher than that in DCC, where the steam in SCC acts as a diluent, thereby decreasing the partial pressure of the reactants and reducing the formation of paraffins. Through optimization of the operation variables, light olefin yield exceeding 74.3 wt% was obtained in SCC using high silica zeolite beta catalysts with SAR = 300 at TOS = 1 h, 650 °C, and 4.2 h<sup>−1</sup>.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 11","pages":"2613 - 2625"},"PeriodicalIF":3.2,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-025-00467-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923188","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}
引用次数: 0
A Co-culture of Staphylococcus epidermidis and Staphylococcus aureus in a Monodisperse Droplet to Investigate Microbial Interaction at Defined Microenvironment 表皮葡萄球菌和金黄色葡萄球菌在单分散液滴中共同培养以研究微生物在特定微环境中的相互作用
IF 3.2 4区 工程技术
Korean Journal of Chemical Engineering Pub Date : 2025-05-07 DOI: 10.1007/s11814-025-00476-3
So-Yeon Jung, Kyung Han Kim, Jae Seong Kim, Bo-Hyeon Hwang, Chang-Soo Lee
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