Korean Journal of Chemical Engineering最新文献_第5页

Piecewise Response Surface Methodology for Enhanced Modeling and Optimization of Complex Systems 基于分段响应面方法的复杂系统增强建模与优化

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2025-01-03 DOI: 10.1007/s11814-024-00362-4

Jiyun Kim, Do-Gun Kim, Kyung Hwan Ryu

{"title":"Piecewise Response Surface Methodology for Enhanced Modeling and Optimization of Complex Systems","authors":"Jiyun Kim, Do-Gun Kim, Kyung Hwan Ryu","doi":"10.1007/s11814-024-00362-4","DOIUrl":"10.1007/s11814-024-00362-4","url":null,"abstract":"<div>This study introduces an innovative adaptation of response surface methodology (RSM) by implementing piecewise modeling to address the limitations inherent to traditional second-order polynomial models. Traditional RSM often struggles with complex, nonlinear system behaviors, particularly when variable interactions exhibit abrupt changes or asymmetrical relationships. By segmenting the response surface into distinct regions, each modeled separately, the piecewise approach enhances the methodology's adaptability and accuracy in predicting complex system dynamics. The effectiveness of the proposed piecewise RSM is demonstrated through case studies, including the optimization of tetracycline removal from water using a combined adsorption-coagulation process. This approach not only improves prediction accuracy but also integrates economic considerations into process optimization, which is crucial for industrial applications where cost-effectiveness is as important as operational efficiency. The results indicate that piecewise RSM can provide more accurate modeling of environmental and chemical engineering processes, providing a robust tool for improving experimental designs and process efficiencies while maintaining its simplicity.</div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 3","pages":"537 - 545"},"PeriodicalIF":2.9,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480976","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

Reusable MgO/Geopolymer Nanocomposites with High Adsorption Capacity for Methylene Blue as Effects of Mixed-Phase Diffraction and Optical Response Changes 高亚甲基蓝吸附量MgO/地聚合物纳米复合材料混相衍射和光响应变化的影响

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-12-27 DOI: 10.1007/s11814-024-00369-x

Asnan Rinovian, Amru Daulay, Muhammad Amin, Merita Merita, I Gusti Agung Suradharmika, Arniati Labanni, Heryanto Heryanto, Muhamad Nasir, Ahmed Akouibaa, Dahlang Tahir, Roni Rahmat

{"title":"Reusable MgO/Geopolymer Nanocomposites with High Adsorption Capacity for Methylene Blue as Effects of Mixed-Phase Diffraction and Optical Response Changes","authors":"Asnan Rinovian, Amru Daulay, Muhammad Amin, Merita Merita, I Gusti Agung Suradharmika, Arniati Labanni, Heryanto Heryanto, Muhamad Nasir, Ahmed Akouibaa, Dahlang Tahir, Roni Rahmat","doi":"10.1007/s11814-024-00369-x","DOIUrl":"10.1007/s11814-024-00369-x","url":null,"abstract":"<div>Water contamination due to synthetic dyes has continued to increase in recent years and has become a significant environmental problem. The development of effective and sustainable materials to address these problems is essential. To address the challenge, a comprehensive study on synthesizing MgO nanoparticles from seawater bittern and compositing them with a geopolymer matrix for methylene blue (MB) adsorption was chosen. The SEM results show the presence of MgO, which acts like particles attached to the geopolymer grains and gives a more compact boundary effect. X-ray diffractograms showed structural changes, proved by mixed-phase, indicating the successful synthesis of geopolymer/MgO nanocomposites. Quantitative analysis of the I-R spectra shows the change in optical response that is demonstrated by higher ({varvec{k}}) value transitions (Delta left({varvec{L}}{varvec{O}}-{varvec{T}}{varvec{O}}right)) leading to more specific absorption. Optical response changes correlated with BET analysis with modified surface and BJH pore with good consequently ({varvec{D}}(boldsymbol{%})) >75% degradation performance for MB dye based on UV–Vis absorbance analysis. The maximum adsorption capacity achieved was 81.97 mg g−1 with optimum conditions at pH 11 and a contact time of 160 min, and the recyclability test showed an efficiency of 59.67% after seven cycles. Finally, the synergistic effect between mixed phase diffraction and optical response due to the dispersion of MgO nanoparticles on the geopolymer matrix can be a promising candidate for MB adsorbent.</div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 3","pages":"633 - 647"},"PeriodicalIF":2.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480985","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

Enhanced Photocatalytic Performance of ZIF-67@ZIF-11 in Binary MOF Systems for Rapid Removal of Persistent Organic Pollutants ZIF-67@ZIF-11在二元MOF体系中快速去除持久性有机污染物的增强光催化性能

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-12-23 DOI: 10.1007/s11814-024-00363-3

Muhammad Altaf Nazir, Ome Parkash Kumar, Rashid Ali, Muhammad Dilawar Hussain, Sultan Ullah, Abdul Rauf, Ahmed M. El-Sherbeeny, Aziz ur Rehman, Syed Shoaib Ahmad Shah

{"title":"Enhanced Photocatalytic Performance of ZIF-67@ZIF-11 in Binary MOF Systems for Rapid Removal of Persistent Organic Pollutants","authors":"Muhammad Altaf Nazir, Ome Parkash Kumar, Rashid Ali, Muhammad Dilawar Hussain, Sultan Ullah, Abdul Rauf, Ahmed M. El-Sherbeeny, Aziz ur Rehman, Syed Shoaib Ahmad Shah","doi":"10.1007/s11814-024-00363-3","DOIUrl":"10.1007/s11814-024-00363-3","url":null,"abstract":"<div>Freshwater availability is a growing global concern as dye pollution is drastically lowering the quality of water on a massive scale. To reduce water pollution, photodegradation of persistent organic pollutants particularly dyes has recently become a practical option. Herein, ZIF-67, ZIF-11, and composite ZIF-67@ZIF-11 are synthesized via a solvothermal approach, and the materials were further investigated for photodegradation of MB dye solution. These hybrid materials were comprehensively characterized using SEM, EDS XDR, FTIR, and UV–visible spectroscopy. The band gap energy of ZIF-67, ZIF-11, and ZIF-11@ZIF-67 was determined via the UV–visible spectra and is estimated by the Tauc Plot method. Of the as-synthesized hybrid materials, optimized ZIF-67@ZIF-11 demonstrated excellent photodegradation of 95% of 10 ppm Methylene blue (MB) dye solution in the presence of solar light radiation within 50 min. This remarkable photocatalytic efficiency, capitalized by a two-fold hybrid material, may be related to the creation of defects and the ensuing enhanced spectral range of visible light radiation because of the smaller and pertinent band gap energy. According to the reusability experiment, ZIF-67@ZIF-11 has sustained 81% degradation efficiency even after five consecutive cycles. Furthermore, the trapping experiment demonstrated that the photodegradation of MB dye is mostly mediated by superoxide (O.−2) and hydroxyl (OH.) radicals. Based on the results of the photodegradation of MB, ZIF-67@ZIF-11 may be a viable option for the elimination of dyes from wastewater.</div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 3","pages":"547 - 561"},"PeriodicalIF":2.9,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480931","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

Additive-Induced Polymorphism of a Model Amino Acid Crystal 氨基酸晶体加性诱导多态性的研究

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-12-23 DOI: 10.1007/s11814-024-00366-0

Quang Chau Khuu, Phi Dinh Le, Loc Cam Luu, Huyen Thi Thanh Trinh, Stephan E. Wolf, Tuan Anh Nguyen

{"title":"Additive-Induced Polymorphism of a Model Amino Acid Crystal","authors":"Quang Chau Khuu, Phi Dinh Le, Loc Cam Luu, Huyen Thi Thanh Trinh, Stephan E. Wolf, Tuan Anh Nguyen","doi":"10.1007/s11814-024-00366-0","DOIUrl":"10.1007/s11814-024-00366-0","url":null,"abstract":"<div>Additives have a multifaceted impact on nucleation and crystal growth mechanisms, which still require further charting. This contribution maps out the influence of a typical organic amino acid additive, L-phenylalanine, on the crystallization of a model amino acid, L-glutamic acid. The nucleation and growth processes are strongly modulated under the effect of this additive, which ultimately significantly influences polymorphic selection, phase transformation, shape, size, and size distribution of the crystalline products. A mixture of α-glu and β-glu nuclei is formed at low additive concentrations, while only α-glu nuclei are found at high additive concentrations. Thus, this additive molecule preferably induced α-glu conformation, thereby triggering the nucleation of α-glu instead of β-glu, which resulted in polymorphic selection of α-glu. Moreover, this additive favorably adsorbs on the facets of α-glu crystals, thereby inhibiting heterogeneous nucleation of β-glu, resulting in impeding a critical phase transformation pathway of α-glu to β-glu. This additive also remarkably impacted crystalline products’ shape, size, and size distribution.</div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 4","pages":"885 - 900"},"PeriodicalIF":2.9,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707033","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

Bluish-Green Light-Emitting Polymers Based on Polycarbazole Containing Benzo[b]naphtho[1,2-d]thiophene-S,S-dioxide Unit 含苯并[b]萘[1,2-d]噻吩- s， s -二氧化单元的聚咔唑类蓝绿色发光聚合物

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-12-21 DOI: 10.1007/s11814-024-00361-5

Yuhao Zhang, Jin Xu, Wei Yang

{"title":"Bluish-Green Light-Emitting Polymers Based on Polycarbazole Containing Benzo[b]naphtho[1,2-d]thiophene-S,S-dioxide Unit","authors":"Yuhao Zhang, Jin Xu, Wei Yang","doi":"10.1007/s11814-024-00361-5","DOIUrl":"10.1007/s11814-024-00361-5","url":null,"abstract":"<div>Bluish-green light-emitting polymers (PCz-NSOs) were prepared through incorporating benzo[b]naphtho[1,2-d]thiophene-S,S-dioxide (NSO) into the main chain of polycarbazole (PCz). PCz-NSOs exhibited exceptional thermal properties with decomposition temperatures (Tds) of PCz-NSOs surpassed 430 °C. With the NSO content increases, the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels of PCz-NSOs gradually decreased, and the LUMO energy levels decreased more significantly, which indicated that the NSO unit possessed strong electronegativity. The combine of NSO and carbazole unit formed robust donor–acceptor (D–A) interaction, which caused the bathochromic-shift of emission spectra and present the bluish-green light emission. The high photoluminescence quantum yields (QPL) of PCz-NSOs were obtained with 69–82%. Even if the current density was set as 500 mA/cm2, there was unchanged for electroluminescence spectrum of PCz-NSO30, exhibiting excellent spectra stability. PCz-NSO30 obtained a peak current efficiency and brightness of 5.65 cd/A and 19,061 cd/m2, accompanied by CIE coordinates of (0.27, 0.53). It can be inferred that NSO held promise as an effective moiety for achieving efficient green light emission.</div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 2","pages":"445 - 454"},"PeriodicalIF":2.9,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994939","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

An Easy Detection of Sulfide by an Imine-Bond Cleavage-Based Fluorescence Chemosensor: Smartphone and Paper-Strip Applications 基于亚胺键裂解的荧光化学传感器对硫化物的简单检测：智能手机和纸条应用

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-12-20 DOI: 10.1007/s11814-024-00334-8

Chanwoo Song, Jae Jun Lee, Hyejin Nam, Cheal Kim

{"title":"An Easy Detection of Sulfide by an Imine-Bond Cleavage-Based Fluorescence Chemosensor: Smartphone and Paper-Strip Applications","authors":"Chanwoo Song, Jae Jun Lee, Hyejin Nam, Cheal Kim","doi":"10.1007/s11814-024-00334-8","DOIUrl":"10.1007/s11814-024-00334-8","url":null,"abstract":"<div>We designed an imine-bond cleavage-based fluorescent chemosensor CDH ((E)-(5-chloro-2-((3,5-dichloro-2-hydroxybenzylidene)amino)phenyl)(phenyl)methanone) for detecting S2−. The sensor CDH selectively sensed S2− among various anions through fluorescent change. The fluorescent change was cyan turn-on from colorless with a high quantum yield (λex = 427 nm, Φ = 0.486), resulting in strong fluorescent intensity. With the result of Job plot, the reaction of S2− and CDH turned out to be a 1:1 interaction. The detection limit for S2− of CDH was 2.85 µM. The reaction process of S2− by CDH was demonstrated to be imine-bond cleavage through ESI-mass, 1H NMR titration, and theoretical calculations. Additionally, test-strip and smartphone applications were successfully constructed for S2− detection, and these findings revealed that CDH could be effectively utilized for sulfide sensing without sophisticated instruments.</div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 3","pages":"669 - 678"},"PeriodicalIF":2.9,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481265","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 Hg2+ from Wastewater by a Novel Cu-Modified Attapulgite: Adsorption Performance and Mechanism 新型cu改性凹凸棒土对废水中Hg2+的高效去除：吸附性能及机理

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-12-19 DOI: 10.1007/s11814-024-00360-6

Chongming Chen, Dong Li, Jinxing Yu, Kai Che

{"title":"Efficient Removal of Hg2+ from Wastewater by a Novel Cu-Modified Attapulgite: Adsorption Performance and Mechanism","authors":"Chongming Chen, Dong Li, Jinxing Yu, Kai Che","doi":"10.1007/s11814-024-00360-6","DOIUrl":"10.1007/s11814-024-00360-6","url":null,"abstract":"<div>The development of low-cost and highly efficient adsorbents is essentially needed for removing Hg2+ species from desulfurization sludge leaching wastewater. In this study, a series of novel Cu-modified attapulgite (Cu–ATP) adsorbents were synthesized via a simple HNO3 treatment combined with an improved impregnation method. The Hg2+ removal efficiency of these Cu–ATP adsorbents was investigated in simulated leaching wastewater. The effects of HNO3 concentration, Cu precursor, Cu-loading content, and other adsorption conditions on Hg2+ removal using Cu–ATP were investigated. The results demonstrated that Cu–ATP prepared with CuSO4 as the precursor and treated with 3 mol/L HNO3 showed excellent Hg2+ removal performance. Moreover, with increasing adsorbent content and adsorption time, the Hg2+ removal efficiency of Cu–ATP first increased and then stabilized. However, with an increase in pH value, the Hg2+ removal efficiency first increased and then decreased, whereas the removal showed a decreasing trend with increasing initial Hg2+ concentration. The adsorption kinetics results indicated that Hg2+ adsorption on Cu–ATP was well described by the pseudo-second-order model. Furthermore, various characterization methods, including Brunauer − Emmett − Teller analysis (BET), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), were employed to analyze the physicochemical properties of the adsorbents. The analyses confirmed that the superior Hg2+ removal efficiency of Cu–ATP was mainly due to the complexation of Hg2+ with chemisorbed oxygen produced by Cu doping and S species generated from the Cu precursor (CuSO4). These findings underscore the potential of Cu–ATP as a cost-effective adsorbent for removing Hg2+ from wastewater.</div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 2","pages":"329 - 343"},"PeriodicalIF":2.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995078","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

Donor Numbers for Ionic Liquids and Carbonate Solvents Using 7Li and 23Na as Probes 以7Li和23Na为探针的离子液体和碳酸盐溶剂的供体数

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-12-16 DOI: 10.1007/s11814-024-00356-2

Uddhav Kulkarni, Won‑Jang Cho, Seunghyeon Lee, Dong Soo Hwang, TaeYeong Im, You Kyeong Jeong, Kyungho Ahn, Gi-Ra Yi

引用次数: 0

Layer-by-Layer-Structured Silicon-Based Electrode Design for Ultrafast Lithium-Ion Batteries 用于超快锂离子电池的逐层结构硅基电极设计

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-12-12 DOI: 10.1007/s11814-024-00357-1

Keun-Young Ko, Ki-Wook Sung, Hyo-Jin Ahn

{"title":"Layer-by-Layer-Structured Silicon-Based Electrode Design for Ultrafast Lithium-Ion Batteries","authors":"Keun-Young Ko, Ki-Wook Sung, Hyo-Jin Ahn","doi":"10.1007/s11814-024-00357-1","DOIUrl":"10.1007/s11814-024-00357-1","url":null,"abstract":"<div>Silicon has attracted attention as a high-capacity material capable of replacing graphite as a battery anode material. However, silicon exhibits poor cycling stability owing to particle cracking and unstable SEI formation owing to large volume changes during charging and discharging. Therefore, we report the electrode design of lithium-ion batteries (LIBs) anode structure composed of laminated layers of silicon and carbon nanotubes (CNTs), which significantly increases the cycling life and delivers ultrafast performance. Unlike previously commercialized casting methods that use ultrasonic spraying, the Si- and CNT-layered architecture aims to solve engineering limitations that include non-uniform coatings, unclear active materials, conductive materials, and binder distribution. The laminated-Si/CNT electrode exhibited an excellent specific capacity of 157.58 mAh/g after 500 cycles at an ultrafast current density of 2000 mA/g; it also exhibited a cycling stability of 20.02% after 10 cycles at a current density of 100 mA/g and 190 cycles at 200 mA/g. This performance is due to the following effects that complement the shortcomings of the Si electrode through CNT layer stacking. First, the top CNT layer coating prevents direct contact between the Si-active material and the electrolyte, thereby reducing side reactions. Second, the laminated-Si/CNT electrode with its layer-by-layer structure suppresses the overall volume expansion of the electrode owing to the buffering effect of the CNT layer. Third, the CNT layers are highly electrically and ionically conductive, unlike silicon layers, thereby enhancing ultrafast cycling performance.</div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1045 - 1053"},"PeriodicalIF":2.9,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852537","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

In-situ IR Study on Stability of Epoxide-Functionalized Polyethyleneimine CO2 Adsorbent to NO2 and SO2 Gases 环氧化物功能化聚亚胺CO2吸附剂对NO2和SO2气体稳定性的原位红外研究

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-12-10 DOI: 10.1007/s11814-024-00350-8

Seong Won Pyo, Clinton Manianglung, Young Soo Ko

引用次数: 0