Korean Journal of Chemical Engineering最新文献_第10页

Emission Factor Estimation Using Monte Carlo Simulation: Focusing on the Development of Dioxin Emission Factors in Cremation Facilities 使用蒙特卡罗模拟估算排放因子：聚焦火葬设施中二恶英排放因子的开发

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-07-05 DOI: 10.1007/s11814-024-00211-4

Mi Hyeon Lee, Young-Kwon Park

{"title":"Emission Factor Estimation Using Monte Carlo Simulation: Focusing on the Development of Dioxin Emission Factors in Cremation Facilities","authors":"Mi Hyeon Lee, Young-Kwon Park","doi":"10.1007/s11814-024-00211-4","DOIUrl":"10.1007/s11814-024-00211-4","url":null,"abstract":"<div><p>In this study, data from 23 domestic cremation facilities measured for 5 years (from 2016 to 2020) of 13 domestic cremation facilities was used to calculate the emission factors of dioxins (PCDD/DFs) of cremation facilities that use Liquified Natural Gas (LNG) as combustion fuel. We performed a statistical analysis for the first time to estimate the emission factor using limited measurement results from cremation facilities that are not easily accessible. We attempted to identify the emission concentration of dioxin as a representative persistent organic pollutants substance and developed a statistically based dioxin emission factor. The concentration of dioxins (PCDD/DFs) in the cremation facility ranged 0.001–4.440 ng I-TEQ/Sm<sup>3</sup> with an average concentration of 0.719 ng I-TEQ/Sm<sup>3</sup>. The emission factor calculated using the 23 measured data showed 0.010–21.485 μg I-TEQ/Cremation. A Monte Carlo Simulation was conducted using probability density distribution and parameter estimation. Consequently, 10,000 emission factors were selected, and the Pareto distribution was predicted to be the most appropriate probability density distribution. The emission factor values through Monte Carlo simulation showed a minimum value of 1.490 × 10–08 μg I-TEQ/Cremation and a maximum value of 7816 μg I-TEQ/Cremation. The average value was calculated as 39.920 μg I-TEQ/Cremation. Each parameter of the Pareto distribution is shape parameter (<i>α</i>) 1.026, location parameter (<i>μ</i>) – 1.021, and scale parameter (<i>λ</i>) 1.021. As a result of this study, the median value of the cumulative density function was selected as a representative value for the dioxin emission factor of cremation facilities and the emission factor was 0.986 μg I-TEQ/ Cremation. The 95% confidence interval in the Pareto distribution was presented as 0.026 μg I-TEQ/Cremation to 36.216 μg I-TEQ/ Cremation.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 9","pages":"2607 - 2619"},"PeriodicalIF":2.9,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550876","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

Ultrathin Glass-Based Perovskite Solar Cells Employing Bilayer Electron Transport Layer 采用双层电子传输层的超薄玻璃基 Perovskite 太阳能电池

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-07-05 DOI: 10.1007/s11814-024-00213-2

Wooyeon Kim, Jian Cheng, Joonwon Choi, Seoyeong Lee, Yongwoo Lee, Doyeon Lee, Min Jae Ko

{"title":"Ultrathin Glass-Based Perovskite Solar Cells Employing Bilayer Electron Transport Layer","authors":"Wooyeon Kim, Jian Cheng, Joonwon Choi, Seoyeong Lee, Yongwoo Lee, Doyeon Lee, Min Jae Ko","doi":"10.1007/s11814-024-00213-2","DOIUrl":"10.1007/s11814-024-00213-2","url":null,"abstract":"<div><p>In recent studies, flexible perovskite solar cells (PSCs) have exhibited high power conversion efficiency (PCE) coupled with remarkable mechanical stability. However, the conventional polymer substrates used in flexible PSCs possess high permeability to moisture and oxygen, leading to the rapid degradation of perovskite materials. In this work, we address these issues by employing ultrathin glass (UTG) substrates, which provide moisture impermeability while retaining flexibility. Additionally, we introduce a strategically designed SnO<sub>2</sub>/TiO<sub>2</sub> bilayer as the electron transport layer (ETL). Our results reveal that PSCs incorporating the bilayer ETL achieve higher PCE than those with a monolayer ETL on conventional glass and UTG substrates. Furthermore, moisture permeability tests demonstrate that PSCs based on UTG substrates sustain their PCE over time, compared to their polymer-based counterparts. These results imply that UTG substrates, combined with a SnO<sub>2</sub>/TiO<sub>2</sub> bilayer ETL, offer a promising solution for developing durable, high-performance, flexible PSCs suitable for long-term applications.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 14","pages":"3791 - 3798"},"PeriodicalIF":2.9,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550878","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

Production of Glycerol-Free Biodiesel Using Pollen-Derived CaO Heterogeneous Catalyst 利用花粉衍生的 CaO 异构催化剂生产不含甘油的生物柴油

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-07-02 DOI: 10.1007/s11814-024-00212-3

Ying Tang, Meng Li, Guangtao Li, Yi Yang, Ying Yang

引用次数: 0

Vapor-Phase Deposited Polymer Dielectric Layers for Organic Electronics: Design, Characteristics, and Applications 用于有机电子的气相沉积聚合物介电层：设计、特性和应用

IF 2.7 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-07-01 DOI: 10.1007/s11814-024-00210-5

Sukwon Jang, Youson Kim, Chungryeol Lee, Taehyun Nam, Jeongik Park, Junyeong Yang, Juchan Kim, Bohyun Lee, Sung Gap Im

{"title":"Vapor-Phase Deposited Polymer Dielectric Layers for Organic Electronics: Design, Characteristics, and Applications","authors":"Sukwon Jang, Youson Kim, Chungryeol Lee, Taehyun Nam, Jeongik Park, Junyeong Yang, Juchan Kim, Bohyun Lee, Sung Gap Im","doi":"10.1007/s11814-024-00210-5","DOIUrl":"https://doi.org/10.1007/s11814-024-00210-5","url":null,"abstract":"<p>The emergence of organic electronics has transformed the landscape of electronic devices, paving the way for future advancements in low-power, flexible, and wearable electronics compatible with various form factors. Polymeric dielectric layers are pivotal in the implementation of organic electronics due to their inherent deformable characteristics as well as outstanding insulating performance. Here, the review highlights an innovative technology termed initiated chemical vapor deposition (iCVD) for synthesizing polymer dielectric materials, particularly in the context of organic thin-film transistors (OTFTs). The all-dry polymer deposition process circumvents issues associated with conventional solvent-based methods, such as residual solvent, potential damage to the substrate, and the lack of large-area uniformity, allowing for ultra-thin, high-purity polymer dielectric layers with exceptional dielectric performance comparable to inorganic dielectrics. Furthermore, iCVD process enables the incorporation of various chemical functionalities into the dielectric layer, which enables the generation of versatile, high-performance organic electronic devices. Based on the beneficial aspects of the iCVD process, the review provides an overview of iCVD polymer dielectric layers, emphasizing their significance and potential toward innovative applications in the fields of organic electronic, including OTFTs, resistive random-access memory (RRAM), flash memory and logic circuits.</p>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"15 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141532184","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

Recent Advances on Solution-phase Synthesis of Metal Chalcohalide Nanocrystals 溶液相合成金属卤化物纳米晶体的最新进展

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-06-29 DOI: 10.1007/s11814-024-00209-y

Dagam Kim, Seung Hyeon Kim, Da Won Lee, Ho Young Woo, Yoonjoo Choi, Mi Yeon Yu, Sang Woong Yoon, Hyungyoon Choi, Taejong Paik

{"title":"Recent Advances on Solution-phase Synthesis of Metal Chalcohalide Nanocrystals","authors":"Dagam Kim, Seung Hyeon Kim, Da Won Lee, Ho Young Woo, Yoonjoo Choi, Mi Yeon Yu, Sang Woong Yoon, Hyungyoon Choi, Taejong Paik","doi":"10.1007/s11814-024-00209-y","DOIUrl":"10.1007/s11814-024-00209-y","url":null,"abstract":"<div><p>Chalcohalide nanocrystals have attracted significant attention as promising candidates for the fabrication of novel electronic and optoelectronic devices. Chalcohalide exhibit high charge carrier mobility, defect tolerance, strong absorption characteristics, and tunable optical and electrical properties owing to their unique electronic configurations and diverse compositions. Specifically, chalcohalide nanocrystals synthesized via solution-phase enable tunability of uniform size, shape, and composition, and offer colloidal stability when dispersed in various solvents. Solution-processable chalcohalide nanocrystals offer a simple and cost-effective route for device fabrication while preserving their unique size and shape-dependent properties. This review represents the recent advances in the solution-phase synthesis of metal chalcohalide nanocrystals and their applications in solution-processed device fabrication. This review sequentially presents synthesis methods, including solvothermal, hot-injection, and heat-up methods, followed by a detailed description of the optical and structural properties of the nanocrystals. Furthermore, a concise overview of optoelectronic device applications, such as photodetectors and solar cells, which utilize chalcohalide nanocrystals, is provided.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 13","pages":"3395 - 3411"},"PeriodicalIF":2.9,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501547","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

Economics and Sustainability of Introducing Clean Hydrogen from Australia in the Republic of Korea 大韩民国引进澳大利亚清洁氢气的经济性和可持续性

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-06-26 DOI: 10.1007/s11814-024-00197-z

Ayeon Kim, Hankwon Lim

引用次数: 0

Review of Small Modular Reactors: Challenges in Safety and Economy to Success 审查小型模块化反应堆：安全挑战与成功的经济性

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-06-25 DOI: 10.1007/s11814-024-00207-0

Jeong Ik Lee

{"title":"Review of Small Modular Reactors: Challenges in Safety and Economy to Success","authors":"Jeong Ik Lee","doi":"10.1007/s11814-024-00207-0","DOIUrl":"10.1007/s11814-024-00207-0","url":null,"abstract":"<div><p>This paper explores the paradigm shift in nuclear energy generation from large, centralized nuclear power plants towards small modular reactors (SMRs), in response to the evolving economic, safety, and environmental challenges faced by the nuclear industry. For over 70 years, nuclear power has been a cornerstone of electricity generation, offering a low-carbon, reliable, and cost-effective solution. However, the traditional model of large-scale nuclear reactors has encountered significant barriers, including high financial risks, stringent safety concerns, and a lack of adaptability to smaller electrical grids, and changing energy markets. With over 70 types of SMRs currently under development globally, this study reviews several prominent models to assess their general characteristics and potential advantages. Through simple physical and economic models, the paper evaluates the impact of reducing reactor size on efficiency, safety, and cost, highlighting the shared traits and innovations across different SMR designs. The findings indicate that SMRs could address many of the limitations of conventional nuclear power, offering more flexible, scalable, and economically viable options for electricity generation. This paper finally tries to identify key technologies and strategic considerations essential for their successful deployment in a rapidly transforming global energy landscape.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 10","pages":"2761 - 2780"},"PeriodicalIF":2.9,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-024-00207-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501546","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

Preparation of Sulfonated Cross-Linked Films for Proton Exchange Membranes (PEMs) Through a Curing Process 通过固化工艺制备质子交换膜 (PEM) 用磺化交联薄膜

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-06-21 DOI: 10.1007/s11814-024-00184-4

Suk-Yong Jang, Ji-Su Lee, Seung-Gi Oh, Sien-Ho Han

{"title":"Preparation of Sulfonated Cross-Linked Films for Proton Exchange Membranes (PEMs) Through a Curing Process","authors":"Suk-Yong Jang, Ji-Su Lee, Seung-Gi Oh, Sien-Ho Han","doi":"10.1007/s11814-024-00184-4","DOIUrl":"10.1007/s11814-024-00184-4","url":null,"abstract":"<div><p>Raw-poly(<i>n</i>-butyl acrylate (BA)-sodium styrene sulfonate (SS)-neopentyl glycol diacrylate (NPGDA)) (raw-PBSN) films were prepared through a curing process from various BA/SS/NPGDA mixtures (BSN mixture). Sulfonation of the raw-PBSN films was performed via a pretreatment process. As a result, light-brown sulfonated PBSN (SPBSN) films with a thickness of 80 ~ 95 μm were obtained. The ion exchange capacity (IEC), proton conductivity (PC), swelling ratio (SR), and water uptake (WU) of these specimens were improved with an increase in the content of SS within the SPBSN matrix. The SPBSN 25 wt%, SPBSN 30 wt% and SPBSN 35 wt% films containing corresponding SS contents of 25 wt%, 30 wt% and 35 wt%, which are much higher IEC values compared to that of Nafion<sup>®</sup> 117. Specifically, the PC value of the SPBSN 35 wt% film was approximately 0.211 S/cm, nearly 22.6% higher than that of Nafion<sup>®</sup> 117 (0.172 S/cm) at a temperature of 80 °C and relative humidity (RH) of 100%. A fourier transform infrared spectroscopy (FT-IR) analysis was conducted to verify the sulfonation of the raw-PBSN films. A transmission electron microscope (TEM) analysis served to investigate the hydrophilic domain images of the SPBSN films.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 8","pages":"2287 - 2296"},"PeriodicalIF":2.9,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501548","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

One-Pot Preparation of Alpha-Chymotrypsin Degradable Hydrogel Micropatterns for Controlled Drug Release 用于控制药物释放的 Alpha-Chymotrypsin 可降解水凝胶微图案的一锅制备方法

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-06-20 DOI: 10.1007/s11814-024-00205-2

Kyungeun Park, Youngeun Jeon, Joonwon Bae, Seongsoo Kim, Dong-Sik Shin

{"title":"One-Pot Preparation of Alpha-Chymotrypsin Degradable Hydrogel Micropatterns for Controlled Drug Release","authors":"Kyungeun Park, Youngeun Jeon, Joonwon Bae, Seongsoo Kim, Dong-Sik Shin","doi":"10.1007/s11814-024-00205-2","DOIUrl":"10.1007/s11814-024-00205-2","url":null,"abstract":"<div><p>Fluorouracil (5-FU) has been the most widely used chemotherapy agent since its clinical introduction in 1957, and it continues to form the basis of treatment for various cancers. However, due to the side effects of an antimetabolite, a strategy fulfilling stringent requirements placed on a 5-FU delivery system requires controlled and extended release of 5-FU in a localized manner. Here, an in-situ gel-forming method for the preparation of micropatterned, α-chymotrypsin-degradable hydrogel (PHcd) for controlled release of 5-FU is introduced. More specifically, methacrylated hyaluronic acid (HA) and polyethylene glycol diacrylate (PEGDA), known for their excellent moisture retention capacity, are chosen for skin therapy. They are crosslinked with CYKC peptide through a thiol-ene click reaction. The synthesis of the CYKC peptide and its cleavage by α-chymotrypsin were confirmed using high-performance liquid chromatography (HPLC). Additionally, the in vitro release behavior was accurately monitored using the micropatterning method, demonstrating the stable immobilization and successful sustained release of 5-FU upon the addition of α-chymotrypsin in micropatterned PHcd hydrogel. Consequently, this micropatterned PHcd hydrogel can be considered a promising scaffold for localized and sustained delivery of cytotoxic drugs for skin cancer treatment.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 9","pages":"2651 - 2659"},"PeriodicalIF":2.9,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501550","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

MOF-Derived Bimetal-Embedded Carbon with Etched Morphologies as an Efficient Activator of Peroxymonosulfate for Eliminate Emerging Contaminants 具有蚀刻形态的 MOF 衍生双金属嵌入碳是一种高效的过硫酸盐活化剂，可用于消除新出现的污染物

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-06-15 DOI: 10.1007/s11814-024-00108-2

Yi-Chun Chen, Xin-Yu Jiang, Jia-Yin Lin, Bui Xuan Thanh, Haitao Wang, Chao-Wei Huang, Suresh Ghotekar, Chih-Feng Huang, Kun-Yi Andrew Lin

{"title":"MOF-Derived Bimetal-Embedded Carbon with Etched Morphologies as an Efficient Activator of Peroxymonosulfate for Eliminate Emerging Contaminants","authors":"Yi-Chun Chen, Xin-Yu Jiang, Jia-Yin Lin, Bui Xuan Thanh, Haitao Wang, Chao-Wei Huang, Suresh Ghotekar, Chih-Feng Huang, Kun-Yi Andrew Lin","doi":"10.1007/s11814-024-00108-2","DOIUrl":"10.1007/s11814-024-00108-2","url":null,"abstract":"<div><p>As bis(4-hydroxyphenyl)methanone (BHP) is one of the most common UV light stabilizers (UVLS), but exhibits endocrine disrupting toxicity, this study aims to develop useful sulfate radical-based techniques to eliminate BHP from water by activating peroxymonosulfate (PMS). Hence, while cobalt (Co) exhibits efficacy as a transition metal for the activation of PMS, the utilization of manganese/cobalt (Mn/Co) bimetallic oxides presents an even more encouraging prospect as heterogeneous catalysts for PMS activation. In this study, we have successfully produced N-doped carbon-supported Mn/Co nanoparticles (NCMC) with a distinctive hollow-engineered nanostructure. The synthesis involved the utilization of Co-MOF as a precursor, followed by easy etching and Mn doping to achieve the desired composition of Mn/Co bimetallic oxide nanoparticles. The inclusion of Mn dopant facilitates the integration of Mn/Co nanoparticles into the hollow-structured N-doped carbon matrix. NCMC demonstrates much higher activity compared to NCC and the benchmark catalyst, Co<sub>3</sub>O<sub>4</sub> NP, in terms of PMS activation for the degradation of BHP. The findings of the eco-toxicity study indicate that the degradation of BHP by NCMC + PMS does not yield hazardous or extremely toxic byproducts, so establishing NCMC as a potentially effective heterogeneous catalyst for activating PMS in the degradation of BHP.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 6","pages":"1815 - 1831"},"PeriodicalIF":2.9,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141412699","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