Canadian Journal of Chemical Engineering最新文献

{"title":"Bridging academia and industry: A comprehensive review of advances, gaps, and future directions of fault detection and diagnosis (FDD) systems in the chemical industry","authors":"Sumana Roy,&nbsp;Pratyush Kumar Pal,&nbsp;Somasish Saha,&nbsp;Narottam Behera,&nbsp;Sandip Kumar Lahiri","doi":"10.1002/cjce.25701","DOIUrl":"https://doi.org/10.1002/cjce.25701","url":null,"abstract":"<p>This review analyzes the evolution, current state, and future directions of fault detection and diagnosis (FDD) systems in the chemical industry, highlighting the challenges and opportunities associated with their development and implementation. A systematic review of FDD methodologies, including model-based, data-driven, hybrid, and AI-driven approaches, was conducted to evaluate their strengths, limitations, and industrial applicability. While model-based methods provide high interpretability, they struggle with scalability and complexity in large-scale operations. Data-driven techniques excel in handling nonlinear and complex processes but are limited by the need for large, high-quality datasets. Hybrid and AI-driven systems offer a combination of adaptability and scalability; however, they face computational and interpretability challenges. The study identifies significant barriers to the widespread adoption of intelligent FDD systems, including the complexity of chemical processes, real-time processing demands, scalability issues, integration with legacy systems, economic constraints, and organizational resistance. Despite these challenges, emerging technologies such as IoT, big data analytics, and explainable AI (XAI) present promising opportunities to enhance fault detection accuracy, adaptability, and sustainability. The findings emphasize the importance of developing modular, scalable, and explainable FDD systems that can seamlessly integrate into existing industrial infrastructures. This review underscores the need for greater collaboration between academia and industry to align theoretical advancements with practical requirements, ensuring that FDD systems are both technically robust and industrially viable. By addressing these challenges and leveraging emerging technologies, FDD systems can play a pivotal role in driving safer, more efficient, and sustainable operations in the chemical industry.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"4718-4750"},"PeriodicalIF":1.9,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An innovative method on synthesis of carbon-zeolite porous composite from tailings solvent recovery units and its utilization in the CO2 adsorption process","authors":"Umang Patel,&nbsp;Mohammad Hashem Sedghkerdar,&nbsp;Nader Mahinpey","doi":"10.1002/cjce.25686","DOIUrl":"https://doi.org/10.1002/cjce.25686","url":null,"abstract":"<p>Millions of metric tonnes of tailings solvent recovery units (TSRU) stream are produced annually by the oil sands mining industries and stored in the tailing ponds. This study was focused on implementation of a physiochemical methodology for the conversion of TSRU into the activated carbon-zeolite composite materials (ACZ). ACZ composites were fabricated via physiochemical activation approach using CO₂ stream along with the use of NaOH and KOH in different ratios. The activation step was followed by the hydrothermal treatment for the crystallization of zeolite. All the composites have been characterized by X-ray diffraction (XRD)—X-ray fluorescence (XRF), N₂ adsorption–desorption, Barrett–Joyner–Halenda (BJH) desorption pore size distributions, and scanning electron microscopy (SEM) techniques. CO₂ isotherm is also generated for all the composites and CO₂ capture capacity is also tested for multiple cycles for all the composites using TGA at 1 atm pressure and 30°C. It was observed that the composite synthesized using a higher ratio of KOH and NaOH showed more porosity. It was also recorded that ACZ-Na-KOH-1 had more CO₂ adsorption capacity as compared to other composites. Results indicated that all the ACZ composites were stable for multiple CO₂ adsorption cycles.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"4708-4717"},"PeriodicalIF":1.9,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cjce.25686","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038485","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}

{"title":"Preface: Special series on the pathways to a circular economy of plastics","authors":"Dimitrios Meimaroglou","doi":"10.1002/cjce.25729","DOIUrl":"https://doi.org/10.1002/cjce.25729","url":null,"abstract":"","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 7","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144191262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical process safety domain knowledge graph-enhanced LLM for efficient emergency response decision support","authors":"Chen Zheng,&nbsp;Guohua Chen,&nbsp;Honghao Chen,&nbsp;Qiming Xu,&nbsp;Yimeng Zhao,&nbsp;Yuanfei Zhao,&nbsp;Yunfeng Yang","doi":"10.1002/cjce.25700","DOIUrl":"https://doi.org/10.1002/cjce.25700","url":null,"abstract":"<p>Chemical process safety accidents are characterized by their sudden onset, rapid evolution, and severe consequences. Developing effective emergency response decisions for such complex and dynamic incidents requires comprehensively considering various knowledge domains. Relying solely on expert experience and emergency plans often fails to meet the demands of effective emergency response. To enhance the efficiency of emergency response decision-making in chemical process accidents, this study proposes a method that leverages a chemical process safety knowledge graph (CPSKG) to enhance large language models (LLMs) for generating reliable emergency response decisions. The proposed method uses a seven-step approach to designing scenario and emergency response ontologies. By aligning with the characteristics of emergency domain knowledge texts and the ontology framework, natural language processing (NLP) and retrieval-augmented generation using graphs (Graph RAG) techniques are employed to construct a semantically rich CPSKG. The entities and relationships within the graph enhance the reasoning capabilities of LLMs, facilitating the generation of efficient and reliable emergency response decisions. A case study was conducted to validate the reliability of this approach. The results demonstrate that the LLM enhanced with the CPSKG outperforms other models in generating more effective emergency response decisions. As a key contribution, the proposed method improves the efficiency of knowledge sharing and emergency response in the chemical process safety domain while generating reliable and auxiliary emergency decisions.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"4814-4843"},"PeriodicalIF":1.9,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental methods in chemical engineering: Electron probe micro-analysis—EPMA","authors":"Viviane de Oliveira Campos,&nbsp;Felipe Fernandes Barbosa,&nbsp;Ellen Kadja Lima de Morais,&nbsp;Dulce Maria Araújo Melo,&nbsp;Jildimara de Jesus Santana,&nbsp;Gregory S. Patience","doi":"10.1002/cjce.25712","DOIUrl":"https://doi.org/10.1002/cjce.25712","url":null,"abstract":"<p>Electron probe microanalysis (EPMA) is a non-destructive spectroscopic technique to map the chemical composition—quantitative elemental distribution and layer thickness—with a micro-scale resolution. An electron beam illuminates the surface of a sample and produces backscattered electrons (BSE), secondary electrons (SE), characteristic X-rays, and light known as cathodoluminescence (CL). Combining energy dispersive spectrometry with wavelength-dispersive spectrometry improves trace analysis and differentiates overlapping X-ray lines, but the detection threshold is not much better than 100 ppm (parts per million). Implementing Monte Carlo simulation with better electronics and software are ongoing research areas to improve the method's precision, sensitivity, and spatial resolution. To detect Li, Be, and B (<span></span><math>\u0000 <mrow>\u0000 <mi>Z</mi>\u0000 <mo>&lt;</mo>\u0000 </mrow></math> 11) requires wavelength-dispersive X-ray spectroscopy (WDS), or soft X-ray emission spectroscopy (SXES), or a combination of BSE/EDS method. Researchers in metallurgy &amp; metallurgical engineering, mineralogy, geochemistry &amp; geophysics, and mining &amp; mineral processing apply the method most. Chemical engineering is ranked 21st among the 250 scientific categories that use the technique. It is also applied to reconstitute works of art and the antiquities. A bibliometric map identified four clusters of research and for each cluster the major nodes were: (1) geochemistry, (2) mechanical properties, microstructure, and alloys, (3) Fe, Cu, and Cr, and (4) phase equilibria.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 7","pages":"3000-3011"},"PeriodicalIF":1.6,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cjce.25712","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144191140","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}

{"title":"Biorecycling of polylactide: From enzymatic depolymerization to biotransformation of released products","authors":"Alaric Catard,&nbsp;Isabelle Chevalot,&nbsp;Sandrine Hoppe","doi":"10.1002/cjce.25717","DOIUrl":"https://doi.org/10.1002/cjce.25717","url":null,"abstract":"<p>Polylactic acid (PLA) is a polymer that can replace several petroleum-based polymers due to its properties and bio-sourced nature. However, sustainable recycling processes of PLA avoiding the creation of waste and enabling it to be used as a raw material must be implemented. Enzymatic hydrolysis seems to be a promising way to recycle PLA. The different approaches that have led to the discovery of new PLA depolymerizing enzymes are reviewed here. Moreover, an overview of the various factors affecting enzymatic depolymerization of PLA have been done as well as the contribution of enzyme engineering in understanding the essential residues of these enzymes and improving their properties (e.g., thermostability and activity). Finally, enzymatic polymerization and biosynthesis of PLA from lactide or lactic acid have been reviewed to provide an overview of the various biotechnological approaches that could enable PLA to be completely recycled and remade.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 7","pages":"2969-2999"},"PeriodicalIF":1.6,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144191139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A kinetic model to predict the catalyst lifetime in methanol to olefins conversion","authors":"Saeed Sahebdelfar,&nbsp;Farhad Khorasheh","doi":"10.1002/cjce.25684","DOIUrl":"https://doi.org/10.1002/cjce.25684","url":null,"abstract":"<p>The kinetics of deactivation of zeolite and zeotype catalysts in the conversion of methanol to olefins (MTO) was studied. A three-lump autocatalytic reaction network was considered for methanol conversion reactions. The reversible deactivation rate was considered to be single-lump and first-order in reactant concentration and catalyst activity. A correlation was developed for dimensionless catalyst lifetime as a function of a first Damköhler number and dimensionless rate constants ratio. It was used to relate the catalyst lifetime to methanol concentration in the feed, space velocity, crystallite size, and acidity of the catalyst in a fixed-bed reactor. The model predictions were tested against the published experimental data and favourable agreements were observed. The findings of this work can be used for optimizing reaction conditions to achieve maximum cumulative yield of olefins.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"5056-5064"},"PeriodicalIF":1.9,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Issue Highlights","authors":"","doi":"10.1002/cjce.25327","DOIUrl":"https://doi.org/10.1002/cjce.25327","url":null,"abstract":"","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 5","pages":"1939"},"PeriodicalIF":1.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143836274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Weighing risks against GHG reduction benefits in emerging green technologies","authors":"Federica Tamburini,&nbsp;Valerio Cozzani,&nbsp;Nicola Paltrinieri,&nbsp;Thomas Alan Adams II","doi":"10.1002/cjce.25692","DOIUrl":"https://doi.org/10.1002/cjce.25692","url":null,"abstract":"<p>Green technologies represent promising strategies for mitigating carbon emissions and combating global warming. However, their implementation in civil and industrial applications is not without risks, as intrinsic uncertainties and latent safety concerns can threaten their effective deployment. To quantitatively evaluate the trade-off between environmental benefits and safety issues, this work develops an innovative methodological approach. This approach aims to determine the risk–benefit profile of emerging green solutions through the definition and calculation of a new key performance indicator, the risk of CO₂ avoided index (RCAI). By doing so, it provides a comprehensive understanding of the effectiveness of the green technology implementation and serves as a powerful tool for supporting stakeholder decision-making. In order to demonstrate the systematic nature and versatility of the methodological approach, it has been applied to a case study involving a carbon capture and storage (CCS) system retrofitted onto a power plant. The results underscore its flexibility and effectiveness, highlighting the importance of sustainable and safe technological advancements in the fight against global warming.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"4661-4680"},"PeriodicalIF":1.9,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cjce.25692","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037627","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}

{"title":"Efficient elevated temperature hydrogen direct purification and separation technology","authors":"Yurui Wang,&nbsp;Peixuan Hao,&nbsp;Dongdong Wang,&nbsp;Fuhua Xu,&nbsp;Tongyu Liu,&nbsp;Lu Wang,&nbsp;Shuang Li,&nbsp;Yixiang Shi,&nbsp;Ningsheng Cai","doi":"10.1002/cjce.25699","DOIUrl":"https://doi.org/10.1002/cjce.25699","url":null,"abstract":"<p>Hydrogen, essential as a clean energy carrier and chemical feedstock, demands purification processes that are both efficient and economical. This study presents an analysis of the elevated temperature hydrogen direct purification and separation (HDPS) technology, an innovative method for achieving high hydrogen recovery rates. The LaNi₄Al alloy, utilized as an absorbent, operates effectively at elevated temperatures and exhibits resilience against impurities. The HDPS process is strategically designed, incorporating pressurization, absorption, co-current blowdown at varied rates, and vacuum desorption, and is distinguished from conventional pressure swing adsorption (PSA) based on theoretical insights into their operational differences and similarities. Integrated with a methanol reforming module, a temperature swing adsorption (TSA) module, and a proton exchange membrane fuel cell (PEMFC), the pilot-scale HDPS system outperforms traditional PSA methods in efficiency. The HDPS-TSA process achieves excellent hydrogen recovery rates (91.28%) and purities (99.999%), satisfying the stringent requirements of fuel cells. The HDPS-TSA system's electricity consumption and heat demand are comparable to or lower than those of traditional vacuum pressure swing adsorption (VPSA) and TSA processes, positioning it as a promising solution for sustainable hydrogen production systems.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"5112-5123"},"PeriodicalIF":1.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037841","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}