Chemical Engineering Science最新文献

{"title":"Tetrachromic InP/ZnS quantum dots-based fluorescent sensor arrays for accurate discrimination of multiplex metal ions","authors":"Jianan Huang ,&nbsp;Xianlin He ,&nbsp;Ruqi Zhang,&nbsp;Zixuan Ding,&nbsp;Yanting Song,&nbsp;Haimei Yang","doi":"10.1016/j.ces.2025.122735","DOIUrl":"10.1016/j.ces.2025.122735","url":null,"abstract":"<div><div>Accurate identification of multiple teas based on the difference in their contents and species of metal ions is vital in food inspection and public health. However, achieving accurate sensing from one material with various transduction signals and excellent anti-interference remains a challenge. Herein, a four-channel sensing platform was constructed by combining with four water-soluble InP/ZnS QDs with independent emission. The fluorescence intensities of the four water-soluble InP/ZnS QDs change in different degrees owing to the synergistic coordinative effect between metal ions and ligands. Interestingly, the multi-channel sensing platform allows the qualitative performance of metal ions with excellent anti-interference, high sensitivity, and high accuracy in binary and ternary mixtures. Moreover, the multi-channel fluorescent array exhibited a universality-powerful capability for identifying five teas with satisfactory results. The universal application for detecting Cr⁶⁺, Hg²⁺, and Cu²⁺ in various tea drinks was demonstrated with excellent recovery, indicating a promising potential application in food safety.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122735"},"PeriodicalIF":4.3,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sulfidation-engineered magnetic LDHs/Biotite composite: Synergistic adsorption and magnetic recovery for heavy metal decontamination in soil","authors":"Jingyi Chen ,&nbsp;Yongqi Gao ,&nbsp;Qingyang Xu ,&nbsp;Ke Cui ,&nbsp;Yi Wang ,&nbsp;Qian Zhang ,&nbsp;Zilin Meng","doi":"10.1016/j.ces.2025.122685","DOIUrl":"10.1016/j.ces.2025.122685","url":null,"abstract":"<div><div>Soil contamination with heavy metals poses a serious threat to ecosystem safety and human health, highlighting the need for efficient adsorbents for remediation. A novel magnetic composite adsorbent was developed in this study through the in-situ growth of layered double hydroxides (LDHs) on biotite followed by sodium dimethyldithiocarbamate (DTC) intercalated (DTC-LDH/Biotite), designed for the efficient removal of Cu(II), Pb(II), As(V), and Cr(VI) from contaminated soil. The successful insertion was confirmed by characterization of C₃H₆NS₂⁻ into the interlayers of LDHs. A three-dimensional porous structure was revealed by SEM with uniformly dispersed LDHs on Biotite surface. Adsorption kinetics followed both the pseudo-second-order model and intraparticle diffusion model, indicating the adsorption process was predominantly controlled by active sites. Isotherm studies demonstrated that Cu(II)/Pb(II) adsorption followed the Freundlich model, indicative of multilayer sorption, while As(V)/Cr(VI) adsorption aligned with the Langmuir model, consistent with monolayer sorption. The maximum adsorption capacities reached 198.7 mg/g (Cu), 211.5 mg/g (Pb), 175.2 mg/g (As), and 163.8 mg/g (Cr). It was revealed by mechanistic analyses that Cu/Pb were immobilized through complexation with C₃H₆NS₂⁻ and with hydroxyl groups to form precipitates, whereas As/Cr were fixed through anion exchange and redox reactions. Soil column tests demonstrated that DTC-LDHs/Biotite effectively intercepted heavy metals within the 10–20 cm soil layer, minimizing vertical migration. The composite enabled efficient magnetic separation, with removal rates for As(V) and Cr(VI) remaining above 82 % after five cycles. This work presents a sustainable strategy for heavy metal remediation, integrating high adsorption efficiency, and recyclability, offering promising applications in soil pollution control.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"321 ","pages":"Article 122685"},"PeriodicalIF":4.3,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biodegradable foam from wastepaper with enhanced hydrophobicity for thermal insulation applications","authors":"Thabitha Zelin Rachel, Muthukumar Karuppan","doi":"10.1016/j.ces.2025.122725","DOIUrl":"https://doi.org/10.1016/j.ces.2025.122725","url":null,"abstract":"This study presents the development of a novel bio-based foam utilizing wastepaper pulp as the primary raw material in response to the growing demand for sustainable and biodegradable alternatives to synthetic foams. Foams have shown great potential for multifunctional applications like packaging, insulation, and agricultural purposes. In this work, a simple oven-drying approach was developed to prepare biodegradable foams from waste newspaper (WNP), poly (vinyl alcohol) (PVA), and varying concentrations of chitosan. The resulting foam exhibited promising characteristics like high porosity (&gt;94.71 %) and low density (0.032 g/cm³ to 0.129 g/cm³). The foam exhibited a water absorption capacity ranging from 0.2 to 0.6 g/g, with a maximum water contact angle of 114°, signifying an exceptionally hydrophobic surface and enhanced water resistance. The porous structure and interfacial contact regions contributed to the formation of a robust matrix with a smooth surface, resulting in exceptional thermal insulation (thermal conductivity of 0.04–0.06 W/(m·K)), higher biodegradability, and better mechanical properties (compressive strength in the range of 87 kPa to 154 kPa at 60 % strain). The incorporation of waste-derived cellulose not only repurposes paper waste but also contributes to a circular bioeconomy. The increase in chitosan content improved the water resistance and mechanical strength. Moreover, this biofoam has been demonstrated to be recyclable with a substantially reduced environmental impact.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"93 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cu(I)-COF facilitated transport membranes for aromatics-alkanes separation","authors":"Siwei Wang ,&nbsp;Jin Du ,&nbsp;Zhanquan Zhang ,&nbsp;Yan Wang ,&nbsp;Zhijie Yuan ,&nbsp;Yuhan Wang ,&nbsp;Tianpei Yi ,&nbsp;Fusheng Pan ,&nbsp;Zhongyi Jiang","doi":"10.1016/j.ces.2025.122727","DOIUrl":"10.1016/j.ces.2025.122727","url":null,"abstract":"<div><div>Separating aromatic and aliphatic hydrocarbons can produce high-quality cracking feedstocks and recover value-added aromatic products. Covalent organic framework (COF) may find promising application owing to its exceptional structures and functionalities. In this study, Cu(I)-COF was designed and integrated into Pebax matrix to fabricate facilitated transport membranes. The immobilization of Cu(I) ions onto the COF framework effectively mitigates leaching. Additionally, the COF building blocks provides a stable electron cloud environment for Cu(I), ensuring long-term stability for over 6 months. The vertical channels in the COF afford rapid mass transfer, and the uniformly distributed Cu(I) enhances toluene affinity, thereby intensifying the transfer of toluene. For a 50 wt% toluene/n-heptane mixture, the Cu₃L₃-Pa-Pebax-2 membrane demonstrated a permeation flux of 1100 g·m⁻²·h⁻¹ and a separation factor of 5.44. This study provides a new example for the application of multifunctional organic framework materials to fabricate facilitated transport membranes.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"321 ","pages":"Article 122727"},"PeriodicalIF":4.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Computationally Efficient Heat Pump Model for Quick and Reliable Identification of Energy-Efficient Distillation Configurations","authors":"Akash Sanjay Nogaja, Mohit Tawarmalani, Rakesh Agrawal","doi":"10.1016/j.ces.2025.122707","DOIUrl":"https://doi.org/10.1016/j.ces.2025.122707","url":null,"abstract":"For the decarbonization of energy-intensive distillation processes, that consume more than 40% of the energy in the chemical and refining industries, the availability of carbon-free electricity incentivizes implementation of energy-efficient heat-pumped distillation configurations. However, a significant impediment towards that goal is the vast search space of heat-pumped configurations, with large differences in energy consumption, and the absence of a method that systematically examines all options, and identifies the energy-efficient and cost-effective alternatives. The compressors in heat pump loops add considerable capital cost, so the challenge has been to perform an optimal tradeoff between the number of compressors and energy consumption. Here, we introduce a tractable and precise heat pump model that can be integrated into optimization frameworks, enabling the exploration of design alternatives and/or process parameters to reliably identify lucrative heat pump-assisted systems. Built on the theoretical foundation of differential Carnot heat pumps, latent heat transformations, and temperature tracking equations, the model can identify key locations for heat pump integration within a process that offers maximum energy savings while supporting an efficient capital cost transition strategy. The accuracy of the model is validated against detailed process simulations. To demonstrate its utility, the model is embedded within an optimization framework to identify the optimal configuration from hundreds of alternatives for separating a four-component aromatic mixture using a vapor recompression heat pump. The results demonstrate the model’s high fidelity in predicting energy consumption for various configurations, enabling the efficient search for systems with minimal energy consumption, carbon footprint and cost.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"33 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145194943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advancements in catalyst design and reactor engineering for efficient olefin synthesis from alcohol (C2+) dehydration","authors":"Xinlei Han, Zhourong Xiao, Xining Guo, Chen Zhang, Jiaoyao Wang, Mingrui Feng, Ji-Jun Zou, Guozhu Li, Desong Wang","doi":"10.1016/j.ces.2025.122719","DOIUrl":"https://doi.org/10.1016/j.ces.2025.122719","url":null,"abstract":"The dehydration of alcohols (C₂₊) into value-added olefins holds significant practical value for the synthesis of basic chemical products (e.g., polyethylene and polypropylene) as well as the efficient utilization of non-petroleum resources (e.g., biomass-derived alcohols, coal chemical by-product alcohols). There have been important recent advances in a variety of catalysts and reactors to enhance the preparation of olefins from alcohol (C₂₊) dehydration. Based on this, this review systematically summarized the research progress in the preparation of olefins from alcohol dehydration in recent years. Firstly, we outline the research background related to the preparation of olefins from alcohol dehydration, and emphasize the important prospect of this process for the preparation of olefins. Then, we sort out the reaction mechanisms for the preparation of olefins by alcohol dehydration, of which the two most representative mechanisms are the E1 and E2 mechanisms. Subsequently, we outline the influencing factors (temperature, pressure and catalyst, etc.) for the preparation of olefins by alcohol dehydration. Among them, we highlight the progress of different catalysts including the photothermal catalysts and classical acid catalysts in the preparation of olefins from alcohol dehydration, and systematically organize the reactors used for these catalysts. Finally, we conclude and look forward to the idea that the preparation of olefins from alcohol dehydration requires multiple improvements, which include the use of advanced characterization techniques, the development of efficient catalysts, and the design of reactors, aiming to provide relevant guidance for deepening the understanding of this reaction and realizing large-scale applications in the future.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"8 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reinitialization of a class of nonlinear systems under impulse inputs: treatment of impulse–discontinuous state products with a CSTR application","authors":"Sanjeev Ahuja","doi":"10.1016/j.ces.2025.122714","DOIUrl":"https://doi.org/10.1016/j.ces.2025.122714","url":null,"abstract":"Impulse response analysis is an effective and extensively utilized technique in chemical engineering, especially for residence time distribution analysis, dynamic characterization, and system identification. However, the strong nonlinearity of these systems, coupled with intractable terms involving products of impulses and discontinuous states, poses significant computational challenges to capture state reinitialization and evolution after discontinuities. In this work, an approach based on singularity analysis is proposed. Singularity analysis is performed to get the model’s singular component, and various strategies are employed to derive the reinitializations, which are then applied to initialize the regular component of the model and numerically compute the state trajectories. Choosing continuous stirred-tank reactor as a case study, the accuracy of these strategies is assessed across a broad range of operational parameters. The results obtained from these strategies are compared for robustness, and their relative precision and applicable ranges are systematically evaluated.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"91 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Image-based method for in-situ monitoring of reaction kinetics","authors":"Hui-Long Wei ,&nbsp;Xiao-Mei Ma ,&nbsp;Jin-Zhou Qin ,&nbsp;Yuan-Hai Su ,&nbsp;Zheng-Hong Luo","doi":"10.1016/j.ces.2025.122720","DOIUrl":"10.1016/j.ces.2025.122720","url":null,"abstract":"<div><div>A platform for <em>in-situ</em> monitoring of the kinetics of colorimetric reactions was established using an image-based method (IBM). Three reactions were selected for testing including a fast homogenous diazo coupling reaction, a slow homogenous reaction (the degradation of Rhodamine B), and a slow heterogenous diazo coupling reaction. Firstly, standard working curves were developed to correlate image gray values with component concentrations. The temporal evolution of component concentrations was then obtained in real-time by combining the high-speed camera and MATLAB software. Reaction kinetics parameters, including rate constants and activation energy, can be online-estimated through programming language. The comparison of the results obtained from IBM, high-performance liquid chromatography, and ultraviolet–visible spectrophotometry demonstrated that IBM can rapidly track concentration changes during the reaction process. Compared to conventional methods, IBM offers a simpler operation procedure, higher accuracy, and shorter sample analysis time.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122720"},"PeriodicalIF":4.3,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deep learning driven ionic liquid screening for toluene and styrene capture","authors":"Xiangyi Kong ,&nbsp;Yuxin Qiu ,&nbsp;Ke Wang ,&nbsp;Qian Liu ,&nbsp;Kunchi Xie ,&nbsp;Hongye Cheng ,&nbsp;Zhen Song ,&nbsp;Zhiwen Qi","doi":"10.1016/j.ces.2025.122724","DOIUrl":"10.1016/j.ces.2025.122724","url":null,"abstract":"<div><div>As typical aromatic volatile organic compounds (VOCs), toluene and styrene present significant health and environmental risks. Although ionic liquids (ILs) have emerged as promising absorbents for aromatic VOCs capture, the myriad diversities of ILs and limited experimental data availability pose critical challenges in efficiently identifying optimal candidates. In this work, advanced deep learning (DL) models are developed to predict the infinite dilution activity coefficients (<em>γ</em>^∞) of IL-toluene/styrene systems, which could act as the thermodynamic estimator of absorbent performance. By leveraging the transfer learning strategy, the models are first pre-trained on experimental data from similar system or computational data, then fine-tuned using experimental data points to improve predictive performance. A multi-level screening framework that considers physical and thermodynamic properties, as well as toxicity, is employed to identify favorable ILs from 170 commercially available candidates. Experimental validation and mechanism analysis are conducted to corroborate the excellent absorption performance of screened ILs. This research provides valuable guidance for artificial intelligence-aided design of absorbents towards other VOCs capture.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122724"},"PeriodicalIF":4.3,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145194994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrosion inhibition mechanism of copper by a novel benzotriazole-based multicomponent volatile corrosion inhibitors packaging film: Surface characterization and theoretical analysis","authors":"Xueyu Cheng, Chenghao Guo, Lixin Lu, Liao Pan, Bingxian Ou","doi":"10.1016/j.ces.2025.122713","DOIUrl":"https://doi.org/10.1016/j.ces.2025.122713","url":null,"abstract":"Investigating the synergistic effects of multi-component complex formulation corrosion inhibitors is crucial for achieving optimal protection of metals against corrosion. The corrosion inhibition behaviors of benzotriazole(BTA) film and volatile corrosion inhibitors(VCIs) film on copper in a 3.5 wt% NaCl solution were systematically analyzed by weight loss tests, electrochemical analyses, FTIR, XRD, 3D electron microscopy, contact angle tests and SEM. Moreover, the synergistic effects between VCIs were illustrated molecularly by DFT and MD calculations. The findings revealed that the high corrosion inhibition efficiency was contingent upon the parallel adsorption orientations of VCIs, as well as the mixed physisorption and chemisorption mechanism. The corrosion inhibition effect of VCIs film on Cu was superior to that of BTA film, and the synergistic effect of the complex formulation VCIs was further confirmed by a higher adsorption energy and a denser parallel adsorption structure. VCIs demonstrated a favorable ability to form a protective film on the copper surface, with the efficacy increasing with the temperature of the inhibitor films formation treatment. The VCIs in the novel BTA multicomponent corrosion inhibitor packaging film functioned as mixed-type inhibitors, primarily inhibiting the cathodic reaction. This study holds significant importance in unraveling the mechanisms of the corrosion behavior regulated by VCIs.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"65 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}