Pub Date : 2025-11-28DOI: 10.1016/j.jtice.2025.106542
Zixuan Lin , Jiao Wang , Siyue Zhang , Biwen Zhu , Haiquan Yu , Cong Yu , Wei Fan
Background:
Industrial processes often exhibit nonlinear and time-varying behaviors, which makes reliable monitoring essential for safety and efficiency. Traditional statistical methods rely on Gaussian noise and stationary assumptions, leading to poor robustness under disturbances and outliers.
Methods:
To address this issue, a Robust Probabilistic Sparse Identification of Nonlinear Dynamics (RPSINDy) is proposed in this work. It combines sparse regression with probabilistic state-space modeling, introduces a Gaussian–Student’s t mixture distribution to capture heavy-tailed noise, and employs EM with particle filtering for parameter estimation and inference. Three monitoring indices are designed to evaluate abnormal operating conditions and dynamic deviations.
Significant Findings:
Case studies on a three-phase flow facility and a marine diesel engine show that RPSINDy achieves earlier and more accurate fault detection than traditional methods. The results highlight its practicality as a robust and interpretable tool for monitoring complex industrial systems.
{"title":"Robust Probabilistic Sparse Identification of nonlinear dynamics for industrial anomaly detection","authors":"Zixuan Lin , Jiao Wang , Siyue Zhang , Biwen Zhu , Haiquan Yu , Cong Yu , Wei Fan","doi":"10.1016/j.jtice.2025.106542","DOIUrl":"10.1016/j.jtice.2025.106542","url":null,"abstract":"<div><h3>Background:</h3><div>Industrial processes often exhibit nonlinear and time-varying behaviors, which makes reliable monitoring essential for safety and efficiency. Traditional statistical methods rely on Gaussian noise and stationary assumptions, leading to poor robustness under disturbances and outliers.</div></div><div><h3>Methods:</h3><div>To address this issue, a Robust Probabilistic Sparse Identification of Nonlinear Dynamics (RPSINDy) is proposed in this work. It combines sparse regression with probabilistic state-space modeling, introduces a Gaussian–Student’s t mixture distribution to capture heavy-tailed noise, and employs EM with particle filtering for parameter estimation and inference. Three monitoring indices are designed to evaluate abnormal operating conditions and dynamic deviations.</div></div><div><h3>Significant Findings:</h3><div>Case studies on a three-phase flow facility and a marine diesel engine show that RPSINDy achieves earlier and more accurate fault detection than traditional methods. The results highlight its practicality as a robust and interpretable tool for monitoring complex industrial systems.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106542"},"PeriodicalIF":6.3,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145615097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-27DOI: 10.1016/j.jtice.2025.106534
Yuling Fu , Jing Tian , Yucheng Zhang , Qingyun Wang , Jingran Zhang , Huimin Zhang , Chuqiao Wang , Shan Huang
Background
Nitrous oxide (N2O) is a byproduct of biological nitrogen removal and a potent greenhouse gas. While biocathodes enhance denitrification performance, systematic studies on their N2O emission characteristics remain limited. Furthermore, the majority of urban sewage has a low chemical oxygen demand/nitrogen (COD/N) ratio (< 5) that requires additional carbon sources, producing secondary pollution and undermining the low-carbon treatment strategy.
Methods
In this study, a denitrifying biocathode system was constructed to investigate N2O emissions under varying COD/N ratios (3, 2, and 1) and applied electric potentials (−0.4 V to 0.0 V).
Significant findings
The results demonstrated that N2O emission factors (N2Oef) in the experimental group ranged from 0.51 % (−0.4 V) to 2.44 % (0.0 V), significantly lower than the control group (3.36 %). N2Oef decreased by 79.10 % at −0.4 V compared with 0.0 V, attributable to enhanced electron supply and complete denitrification. Under varying COD/N ratios, the N2Oef values in the experimental group (1.17–1.57 %) were approximately half those in the control (2.29–4.80 %), confirming the dominant role of applied potential compared with the COD/N ratio. High-throughput sequencing revealed enrichment in N2O-reducing genera (Truepera and Ignavibacterium) under low potentials, while PICRUSt2 predicted the upregulation of key functional genes such as narGHI, nirK, nirS, norC, and nosZ, particularly nosZ (9.7-fold increase at −0.4 V). In addition, this study proposed a strategy for N2O abatement using biocathodes, providing theoretical support for their application in mitigating N2O emissions.
{"title":"Emission reduction characteristics of N2O from low COD/N ratio sewage treated with different potential biocathodes","authors":"Yuling Fu , Jing Tian , Yucheng Zhang , Qingyun Wang , Jingran Zhang , Huimin Zhang , Chuqiao Wang , Shan Huang","doi":"10.1016/j.jtice.2025.106534","DOIUrl":"10.1016/j.jtice.2025.106534","url":null,"abstract":"<div><h3>Background</h3><div>Nitrous oxide (N<sub>2</sub>O) is a byproduct of biological nitrogen removal and a potent greenhouse gas. While biocathodes enhance denitrification performance, systematic studies on their N<sub>2</sub>O emission characteristics remain limited. Furthermore, the majority of urban sewage has a low chemical oxygen demand/nitrogen (COD/N) ratio (< 5) that requires additional carbon sources, producing secondary pollution and undermining the low-carbon treatment strategy.</div></div><div><h3>Methods</h3><div>In this study, a denitrifying biocathode system was constructed to investigate N<sub>2</sub>O emissions under varying COD/N ratios (3, 2, and 1) and applied electric potentials (−0.4 V to 0.0 V).</div></div><div><h3>Significant findings</h3><div>The results demonstrated that N<sub>2</sub>O emission factors (N<sub>2</sub>O<sub>ef</sub>) in the experimental group ranged from 0.51 % (−0.4 V) to 2.44 % (0.0 V), significantly lower than the control group (3.36 %). N<sub>2</sub>O<sub>ef</sub> decreased by 79.10 % at −0.4 V compared with 0.0 V, attributable to enhanced electron supply and complete denitrification. Under varying COD/N ratios, the N<sub>2</sub>O<sub>ef</sub> values in the experimental group (1.17–1.57 %) were approximately half those in the control (2.29–4.80 %), confirming the dominant role of applied potential compared with the COD/N ratio. High-throughput sequencing revealed enrichment in N<sub>2</sub>O-reducing genera (<em>Truepera</em> and <em>Ignavibacterium</em>) under low potentials, while PICRUSt2 predicted the upregulation of key functional genes such as <em>narGHI, nirK, nirS, norC</em>, and <em>nosZ</em>, particularly <em>nosZ</em> (9.7-fold increase at −0.4 V). In addition, this study proposed a strategy for N<sub>2</sub>O abatement using biocathodes, providing theoretical support for their application in mitigating N<sub>2</sub>O emissions.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106534"},"PeriodicalIF":6.3,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145615098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-26DOI: 10.1016/j.jtice.2025.106540
Xiaotong Li , Yitong Fu , Zhuxu Li , Guoqing Rui , Lei Zhong , Zhen Li , Wei Liu , Songjian Zhao
Background
Manganese ferrite (MnFe2O4) is a promising alternative to precious metal catalyst, yet its application in ozone decomposition (deO3) remains underexplored.
Methods
Herein, a series of MnFe2O4 nanocatalysts with different structural properties were precisely designed.
Significant findings
The optimal MnFe2O4 prepared via alkaline co-precipitation method (abbreviated as MFO-AP) catalyst, exhibits superior ozone decomposition performance, which can be attributed to its unique amorphous structure, nanoscale characteristics, enhanced redox properties, abundant oxygen vacancies, and Lewis acid sites. In particular, Lewis acid sites promote ozone activation by coordinating with O₃ oxygen atoms, enhancing ozone decomposition. At a weight hourly space velocities (WHSV) of 600 L·g−1·h−1, the decomposition rate of 50 ppm ozone in dry air reaches 99%, and there is still a decomposition efficiency of 98% after 10 h. Furthermore, under 60% relative humidity (RH), the atomic oxygen from ozone dissociation preferentially occupies the Mn unsaturated sites due to confinement and spatial separation, enhancing ozone decomposition efficiency, while water molecules preferentially bind to the Fe unsaturated sites, improving moisture resistance.
{"title":"Precise regulation of structural properties in manganese ferrite nanocatalysts for enhanced ozone decomposition","authors":"Xiaotong Li , Yitong Fu , Zhuxu Li , Guoqing Rui , Lei Zhong , Zhen Li , Wei Liu , Songjian Zhao","doi":"10.1016/j.jtice.2025.106540","DOIUrl":"10.1016/j.jtice.2025.106540","url":null,"abstract":"<div><h3>Background</h3><div>Manganese ferrite (MnFe<sub>2</sub>O<sub>4</sub>) is a promising alternative to precious metal catalyst, yet its application in ozone decomposition (deO<sub>3</sub>) remains underexplored.</div></div><div><h3>Methods</h3><div>Herein, a series of MnFe<sub>2</sub>O<sub>4</sub> nanocatalysts with different structural properties were precisely designed.</div></div><div><h3>Significant findings</h3><div>The optimal MnFe<sub>2</sub>O<sub>4</sub> prepared via alkaline co-precipitation method (abbreviated as MFO-AP) catalyst, exhibits superior ozone decomposition performance, which can be attributed to its unique amorphous structure, nanoscale characteristics, enhanced redox properties, abundant oxygen vacancies, and Lewis acid sites. In particular, Lewis acid sites promote ozone activation by coordinating with O₃ oxygen atoms, enhancing ozone decomposition. At a weight hourly space velocities (WHSV) of 600 L·g<sup>−1</sup>·h<sup>−1</sup>, the decomposition rate of 50 ppm ozone in dry air reaches 99%, and there is still a decomposition efficiency of 98% after 10 h. Furthermore, under 60% relative humidity (RH), the atomic oxygen from ozone dissociation preferentially occupies the Mn unsaturated sites due to confinement and spatial separation, enhancing ozone decomposition efficiency, while water molecules preferentially bind to the Fe unsaturated sites, improving moisture resistance.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106540"},"PeriodicalIF":6.3,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145615091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-25DOI: 10.1016/j.jtice.2025.106539
Jiaxi Chen, Yanyan Liu, Qian Feng, Runnan Zhang, Yuying Ye, Wanqi Ou
Background
N-Methylpyrrolidone (NMP) is a prevalent organic pollutant in the wastewater generated during the lithium-battery manufacturing process. Given the ecological risks associated with its release into the environment, an efficient and environmentally friendly degradation technology is currently required to meet the demand for the degradation of NMP in water.
Methods
The g-C3N4/diatomite/CoFe2O4 (CNDE-CF) composite catalysts prepared in this study employed a combination of impregnation-calcination and solvent-heat treatment processes. Efficient degradation of NMP was achieved using the obtained catalyst-activated persulfate (PMS), which was characterised in terms of morphology and physicochemical properties. In addition, the effects of the factors on the degradation efficacy of the CNDE-CF/PMS system were investigated by varying the catalyst dosage, initial pH, initial NMP concentration, NMP/PMS concentration ratio, and anion content in solution, respectively, under controlled variables.
Significant findings
Based on the results of these experiments, it was found that the degradation of NMP by the CNDE-CF/PMS system reached 99 % degradation within 60 min (kobs = 0.0715 min-1). Quenching experiments and in situ electron paramagnetic resonance (EPR) spectroscopy techniques revealed the involvement of four reactive oxygen species in the degradation mechanism, with sulphate radicals (SO4·-) and singlet oxygen (1O2) playing a larger role. In addition, the abundant pores of diatomite, the electrons provided by graphitic phase carbon nitride and the redox cycling reaction between Co2+/Co3+ and Fe2+/Fe3+ are the mechanisms by which this efficient degradation reaction occurs. Finally, experiments demonstrating the stability and wide applicability of the material were carried out to provide an experimental basis for the possibilities of this material in future practical applications.
{"title":"Novel g-C3N4/diatomite composite catalysts loaded with cobalt and iron for efficient peroxomonosulfate activation in N-Methylpyrrolidone degradation","authors":"Jiaxi Chen, Yanyan Liu, Qian Feng, Runnan Zhang, Yuying Ye, Wanqi Ou","doi":"10.1016/j.jtice.2025.106539","DOIUrl":"10.1016/j.jtice.2025.106539","url":null,"abstract":"<div><h3>Background</h3><div>N-Methylpyrrolidone (NMP) is a prevalent organic pollutant in the wastewater generated during the lithium-battery manufacturing process. Given the ecological risks associated with its release into the environment, an efficient and environmentally friendly degradation technology is currently required to meet the demand for the degradation of NMP in water.</div></div><div><h3>Methods</h3><div>The g-C<sub>3</sub>N<sub>4</sub>/diatomite/CoFe<sub>2</sub>O<sub>4</sub> (CNDE-CF) composite catalysts prepared in this study employed a combination of impregnation-calcination and solvent-heat treatment processes. Efficient degradation of NMP was achieved using the obtained catalyst-activated persulfate (PMS), which was characterised in terms of morphology and physicochemical properties. In addition, the effects of the factors on the degradation efficacy of the CNDE-CF/PMS system were investigated by varying the catalyst dosage, initial pH, initial NMP concentration, NMP/PMS concentration ratio, and anion content in solution, respectively, under controlled variables.</div></div><div><h3>Significant findings</h3><div>Based on the results of these experiments, it was found that the degradation of NMP by the CNDE-CF/PMS system reached 99 % degradation within 60 min (<em>k</em><sub>obs</sub> = 0.0715 min<sup>-1</sup>). Quenching experiments and in situ electron paramagnetic resonance (EPR) spectroscopy techniques revealed the involvement of four reactive oxygen species in the degradation mechanism, with sulphate radicals (SO<sub>4</sub><sup>·-</sup>) and singlet oxygen (<sup>1</sup>O<sub>2</sub>) playing a larger role. In addition, the abundant pores of diatomite, the electrons provided by graphitic phase carbon nitride and the redox cycling reaction between Co<sup>2+</sup>/Co<sup>3+</sup> and Fe<sup>2+</sup>/Fe<sup>3+</sup> are the mechanisms by which this efficient degradation reaction occurs. Finally, experiments demonstrating the stability and wide applicability of the material were carried out to provide an experimental basis for the possibilities of this material in future practical applications.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"179 ","pages":"Article 106539"},"PeriodicalIF":6.3,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145620578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-24DOI: 10.1016/j.jtice.2025.106536
Wen-chien Tsai , Yu-ning Chiu , Kai-chun Chang , Jia-shyan Shiau , Ke-miao Lu , Tsung-yen Huang , Shan-wen Du , Ker-chang Hsieh , Hao-long Chen , Shih-kang Lin
Background
Traditional empirical indices, such as T10 (softening onset) and T40 (softening completion), are widely used to evaluate how sinter basicity (B2) influences the softening and melting (S&M) behavior in blast furnace ironmaking. Although simple and intuitive, these indices show weak correlation with the underlying physicochemical mechanisms and microstructural evolution.
Methods
This study employs a systematic analytical framework integrating a dynamically controlled atmosphere, microstructural characterization, exhaust gas analysis, and thermodynamic modeling. By comparing sinter ore with different B2, we evaluate the limitations of empirical indices and provide a mechanistic understanding of B2 effects on S&M behavior.
Significant Finding
Comparing typical (B2 = 1.93) and high-basicity sinter (B2 = 2.36), we find that increased B2 lowers the initial FeO liquefaction temperature, promoting earlier, more abundant liquid formation. This accelerates the direct reduction (FeO + C → Fe + CO) and results in greater shrinkage within the 1100−1250 °C range. Extensive early liquid formation fills pore spaces, intensifying softening at lower temperatures. Additionally, high-B2 sinter lowers the slag dripping temperature (1399 °C vs. 1456 °C), facilitating early FeO liquid drainage and suppressing FeO coarsening in 1330–1430 °C range. These findings indicate that increasing sinter basicity enhances S&M behavior, improves gas permeability, and optimizes reduction reactions in blast furnace operations.
{"title":"Mechanistic insights into the impact of sinter ore basicity on softening and melting behavior","authors":"Wen-chien Tsai , Yu-ning Chiu , Kai-chun Chang , Jia-shyan Shiau , Ke-miao Lu , Tsung-yen Huang , Shan-wen Du , Ker-chang Hsieh , Hao-long Chen , Shih-kang Lin","doi":"10.1016/j.jtice.2025.106536","DOIUrl":"10.1016/j.jtice.2025.106536","url":null,"abstract":"<div><h3>Background</h3><div>Traditional empirical indices, such as T<sub>10</sub> (softening onset) and T<sub>40</sub> (softening completion), are widely used to evaluate how sinter basicity (B<sub>2</sub>) influences the softening and melting (S&M) behavior in blast furnace ironmaking. Although simple and intuitive, these indices show weak correlation with the underlying physicochemical mechanisms and microstructural evolution.</div></div><div><h3>Methods</h3><div>This study employs a systematic analytical framework integrating a dynamically controlled atmosphere, microstructural characterization, exhaust gas analysis, and thermodynamic modeling. By comparing sinter ore with different B<sub>2</sub>, we evaluate the limitations of empirical indices and provide a mechanistic understanding of B<sub>2</sub> effects on S&M behavior.</div></div><div><h3>Significant Finding</h3><div>Comparing typical (B<sub>2</sub> = 1.93) and high-basicity sinter (B<sub>2</sub> = 2.36), we find that increased B<sub>2</sub> lowers the initial FeO liquefaction temperature, promoting earlier, more abundant liquid formation. This accelerates the direct reduction (FeO + C → Fe + CO) and results in greater shrinkage within the 1100−1250 °C range. Extensive early liquid formation fills pore spaces, intensifying softening at lower temperatures. Additionally, high-B<sub>2</sub> sinter lowers the slag dripping temperature (1399 °C vs. 1456 °C), facilitating early FeO liquid drainage and suppressing FeO coarsening in 1330–1430 °C range. These findings indicate that increasing sinter basicity enhances S&M behavior, improves gas permeability, and optimizes reduction reactions in blast furnace operations.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106536"},"PeriodicalIF":6.3,"publicationDate":"2025-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145615096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-23DOI: 10.1016/j.jtice.2025.106530
Soha M. Albukhari , Mohamed Abdel Salam , Mostafa R. Abukhadra
{"title":"Corrigendum to “Effective retention of inorganic Selenium ions (Se (VI) and Se (IV)) using novel sodalite structures from muscovite; characterization and mechanism” [Journal of the Taiwan Institute of Chemical Engineers 120 (2021)]","authors":"Soha M. Albukhari , Mohamed Abdel Salam , Mostafa R. Abukhadra","doi":"10.1016/j.jtice.2025.106530","DOIUrl":"10.1016/j.jtice.2025.106530","url":null,"abstract":"","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106530"},"PeriodicalIF":6.3,"publicationDate":"2025-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145614202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-23DOI: 10.1016/j.jtice.2025.106535
Ronggui Wang , JunTong Meng , Xinya Wang , Tiantian Li , Ruirui Cao , Wei Zhang , Mingxing Chen
Background
Precise regulation of membrane pore structure for the treatment of oily wastewater has become an urgent problem. This study introduces an effective and facile method to fabricate membranes with controllable structure and highlights their potential as innovative choices for oil-water separation and premixed membrane emulsification.
Methods
This study prepared Polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) membranes with controllable pore structure via near-field electrospinning (NFES) technology and the effects of the number of layers, inscribed circular diameter and pore geometry on structure and properties were investigated, respectively.
Significant Findings
The results showed that when the number of layers was 6, the inscribed circular diameter of square pores was 0.2 mm, the obtained membranes exhibited excellent oil-water separation performance with a high separation efficiency of 96.77 % and a separation flux of 1511 L∙m-2∙h-1. Compared with the obtained membranes with other pore geometries, the obtained membrane with square pores exhibited excellent oil-water separation and premixed membrane emulsification performance. Additionally, oil-water separation performance had no discernible decay after 500 cycle tests, underscoring their exceptional stability. During the premixed membrane emulsification process, water-in-oil emulsions prepared by the obtained membranes presented a relatively narrow particle size distribution and exhibited excellent stability.
{"title":"Precise tuning of PVDF-HFP membrane structures via near-field electrospinning: Dual applications in oil-water separation and membrane emulsification","authors":"Ronggui Wang , JunTong Meng , Xinya Wang , Tiantian Li , Ruirui Cao , Wei Zhang , Mingxing Chen","doi":"10.1016/j.jtice.2025.106535","DOIUrl":"10.1016/j.jtice.2025.106535","url":null,"abstract":"<div><h3>Background</h3><div>Precise regulation of membrane pore structure for the treatment of oily wastewater has become an urgent problem. This study introduces an effective and facile method to fabricate membranes with controllable structure and highlights their potential as innovative choices for oil-water separation and premixed membrane emulsification.</div></div><div><h3>Methods</h3><div>This study prepared Polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) membranes with controllable pore structure via near-field electrospinning (NFES) technology and the effects of the number of layers, inscribed circular diameter and pore geometry on structure and properties were investigated, respectively.</div></div><div><h3>Significant Findings</h3><div>The results showed that when the number of layers was 6, the inscribed circular diameter of square pores was 0.2 mm, the obtained membranes exhibited excellent oil-water separation performance with a high separation efficiency of 96.77 % and a separation flux of 1511 L∙m<sup>-2</sup>∙h<sup>-1</sup>. Compared with the obtained membranes with other pore geometries, the obtained membrane with square pores exhibited excellent oil-water separation and premixed membrane emulsification performance. Additionally, oil-water separation performance had no discernible decay after 500 cycle tests, underscoring their exceptional stability. During the premixed membrane emulsification process, water-in-oil emulsions prepared by the obtained membranes presented a relatively narrow particle size distribution and exhibited excellent stability.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106535"},"PeriodicalIF":6.3,"publicationDate":"2025-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145615093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-22DOI: 10.1016/j.jtice.2025.106532
Dianrui Yang , Yidan Liu , Ruiying Zhu , Hong Ma , Lejing Zhou , Jinping Liang , Xiaobo Gong
Background
Peroxymonosulfate (PMS)-based advanced oxidation process has been proved to be an effective method for antibiotic treatment, however, the activation of PMS should be improved for practical applications.
Methods
A selenium-cobalt co-doped carbon composite material (CoSe@C) was successfully synthesized through pyrolyzing of ZIF-67 with selenium powder. The CoSe@C was used to degrade tetracycline hydrochloride (TC).
Significant findings
Under optimized conditions of 0.05 g/L CoSe@C, 0.1 g/L PMS and pH = 4.8 at 25 °C, 89.1% TC removal was achieved within 60 min. Characterization confirmed that cobalt provides abundant active sites, while selenium doping enhances graphitization and electron transfer capacity. The non-radical pathway played the primary role, with high valent cobalt and electron transfer contributing the mainly TC degradation in CoSe@C/PMS system. Two possible degradation pathways were proposed in CoSe@C/PMS system, and the most intermediates have lower toxicity than initial TC. The catalyst also exhibited good reusability. This work demonstrates the potential of MOF-derived Se-doped catalysts in advanced oxidation processes for antibiotic-contaminated wastewater treatment.
{"title":"Selenium and cobalt co-doped carbon catalyst to activate peroxymonosulfate for efficient tetracycline hydrochloride degradation: Primary role of non-radicals","authors":"Dianrui Yang , Yidan Liu , Ruiying Zhu , Hong Ma , Lejing Zhou , Jinping Liang , Xiaobo Gong","doi":"10.1016/j.jtice.2025.106532","DOIUrl":"10.1016/j.jtice.2025.106532","url":null,"abstract":"<div><h3>Background</h3><div>Peroxymonosulfate (PMS)-based advanced oxidation process has been proved to be an effective method for antibiotic treatment, however, the activation of PMS should be improved for practical applications.</div></div><div><h3>Methods</h3><div>A selenium-cobalt co-doped carbon composite material (CoSe@C) was successfully synthesized through pyrolyzing of ZIF-67 with selenium powder. The CoSe@C was used to degrade tetracycline hydrochloride (TC).</div></div><div><h3>Significant findings</h3><div>Under optimized conditions of 0.05 g/L CoSe@C, 0.1 g/L PMS and pH = 4.8 at 25 °C, 89.1% TC removal was achieved within 60 min. Characterization confirmed that cobalt provides abundant active sites, while selenium doping enhances graphitization and electron transfer capacity. The non-radical pathway played the primary role, with high valent cobalt and electron transfer contributing the mainly TC degradation in CoSe@C/PMS system. Two possible degradation pathways were proposed in CoSe@C/PMS system, and the most intermediates have lower toxicity than initial TC. The catalyst also exhibited good reusability. This work demonstrates the potential of MOF-derived Se-doped catalysts in advanced oxidation processes for antibiotic-contaminated wastewater treatment.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106532"},"PeriodicalIF":6.3,"publicationDate":"2025-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145569457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-20DOI: 10.1016/j.jtice.2025.106527
Xin Liu , Ruixue Hu , Shiran Zhu , Xiangyu Liu , Yu Fang , Yihang Li , Wei Wei
Background
The demand for adsorption technologies that facilitate the recovery and upcycling of the valuable metallic element, Co, has been increasing. The recovery of Co from wastewater using metal–organic frameworks (MOFs), which are promising adsorbents, is considerably limited because of the lack of selective adsorption sites. Furthermore, research on the upcycling of Co remains inadequate.
Methods
Herein, we develop an integrated strategy combining ion imprinting modification and photodeposition for the selective recovery and upcycling of divalent Co ions (Co(II)) using MOF adsorbents.
Significant findings
First, Co ion–imprinted sites are constructed on a typical MOF adsorbent, MIL-125 (labeled CoIP-ML), via molecular engineering using glycylglycine. Compared with the original aminated MIL-125, CoIP-ML exhibits a superior performance, achieving the maximum adsorption capacity (qm = 218.6 mg/g) and selectivity (selective coefficient kCo(II)/Ni(II) = 3.61) for Co(II) via the chelation of Schiff base groups and adsorption at terminal carboxyl groups. The Co(II) adsorbed on CoIP-ML is upcycled through a facile photodeposition process into Co oxides, which function as a Fenton-like catalyst. The optimal catalyst effectively activates peroxymonosulfate for the removal of chloroquine diphosphate and chlortetracycline hydrochloride, achieving the upcycling of Co(II). This study presents a unique MOF-functionalization paradigm.
{"title":"Molecular engineering of Co ion–imprinted sites on metal–organic frameworks and facile photodeposition for the selective recovery and upcycling of Co(II)","authors":"Xin Liu , Ruixue Hu , Shiran Zhu , Xiangyu Liu , Yu Fang , Yihang Li , Wei Wei","doi":"10.1016/j.jtice.2025.106527","DOIUrl":"10.1016/j.jtice.2025.106527","url":null,"abstract":"<div><h3>Background</h3><div>The demand for adsorption technologies that facilitate the recovery and upcycling of the valuable metallic element, Co, has been increasing. The recovery of Co from wastewater using metal–organic frameworks (MOFs), which are promising adsorbents, is considerably limited because of the lack of selective adsorption sites. Furthermore, research on the upcycling of Co remains inadequate.</div></div><div><h3>Methods</h3><div>Herein, we develop an integrated strategy combining ion imprinting modification and photodeposition for the selective recovery and upcycling of divalent Co ions (Co(II)) using MOF adsorbents.</div></div><div><h3>Significant findings</h3><div>First, Co ion–imprinted sites are constructed on a typical MOF adsorbent, MIL-125 (labeled CoIP-ML), via molecular engineering using glycylglycine. Compared with the original aminated MIL-125, CoIP-ML exhibits a superior performance, achieving the maximum adsorption capacity (<em>q<sub>m</sub></em> = 218.6 mg/g) and selectivity (selective coefficient <em>k</em><sub>Co(II)/Ni(II)</sub> = 3.61) for Co(II) via the chelation of Schiff base groups and adsorption at terminal carboxyl groups. The Co(II) adsorbed on CoIP-ML is upcycled through a facile photodeposition process into Co oxides, which function as a Fenton-like catalyst. The optimal catalyst effectively activates peroxymonosulfate for the removal of chloroquine diphosphate and chlortetracycline hydrochloride, achieving the upcycling of Co(II). This study presents a unique MOF-functionalization paradigm.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106527"},"PeriodicalIF":6.3,"publicationDate":"2025-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145569459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-19DOI: 10.1016/j.jtice.2025.106531
Qian Chen , Lili Guo , Shihui Chen , Xiaoyun Li , Junwei Wang
Background
Polyurethane (PU) composites face critical limitations in industrial applications due to weak interfacial adhesion and polarity mismatch between conventional fillers and polymer matrices. This study proposes a multiscale interface engineering approach to mitigate these limitations.
Methods
The silica (SiO2) particle-modified graphene oxide (SKG) via silane coupling agent was prepared, and the corresponding composites were fabricated by incorporating various SKG ratios (0-5 wt‰) into PU through melt blending. The SAXS analysis was conducted to characterize the microphase separation, and mechanical tests were utilized, especially aging measurements were carried out to explore the durability performance.
Significant findings
The incorporation of SKG at extremely low loading level led to a remarkable improvement in mechanical properties, with tensile strength increasing by 37.1% from 25.3 MPa to 34.7 MPa, alongside a high tear resistance of 78.4 kN/m. More importantly, aging tests demonstrated outstanding durability, retaining over 80% of the original tensile strength even under simulated 48-month service conditions. This strategy establishes a versatile and scalable pathway for developing high-performance elastomers that combine strength with long-term durability in concise way, showing promise for shock-absorbing applications.
{"title":"Covalent bridging strategy with multiscale silicon architectures for polyurethane composites: Enhanced interfacial compatibility and long-term durability","authors":"Qian Chen , Lili Guo , Shihui Chen , Xiaoyun Li , Junwei Wang","doi":"10.1016/j.jtice.2025.106531","DOIUrl":"10.1016/j.jtice.2025.106531","url":null,"abstract":"<div><h3>Background</h3><div>Polyurethane (PU) composites face critical limitations in industrial applications due to weak interfacial adhesion and polarity mismatch between conventional fillers and polymer matrices. This study proposes a multiscale interface engineering approach to mitigate these limitations.</div></div><div><h3>Methods</h3><div>The silica (SiO<sub>2</sub>) particle-modified graphene oxide (SKG) via silane coupling agent was prepared, and the corresponding composites were fabricated by incorporating various SKG ratios (0-5 wt‰) into PU through melt blending. The SAXS analysis was conducted to characterize the microphase separation, and mechanical tests were utilized, especially aging measurements were carried out to explore the durability performance.</div></div><div><h3>Significant findings</h3><div>The incorporation of SKG at extremely low loading level led to a remarkable improvement in mechanical properties, with tensile strength increasing by 37.1% from 25.3 MPa to 34.7 MPa, alongside a high tear resistance of 78.4 kN/m. More importantly, aging tests demonstrated outstanding durability, retaining over 80% of the original tensile strength even under simulated 48-month service conditions. This strategy establishes a versatile and scalable pathway for developing high-performance elastomers that combine strength with long-term durability in concise way, showing promise for shock-absorbing applications.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106531"},"PeriodicalIF":6.3,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145569461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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