Chemical Engineering Journal Advances最新文献

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A critical review on soil remediation using electrokinetic-enhanced permeable reactive barriers: Challenges and enhancements 利用电动力增强的渗透性反应屏障修复土壤:挑战和改进
IF 5.5
Chemical Engineering Journal Advances Pub Date : 2025-05-15 DOI: 10.1016/j.ceja.2025.100774
Ali Barati Fardin, Ahmad Jamshidi-Zanjani
{"title":"A critical review on soil remediation using electrokinetic-enhanced permeable reactive barriers: Challenges and enhancements","authors":"Ali Barati Fardin,&nbsp;Ahmad Jamshidi-Zanjani","doi":"10.1016/j.ceja.2025.100774","DOIUrl":"10.1016/j.ceja.2025.100774","url":null,"abstract":"<div><div>Contaminated soil poses a critical threat to ecosystems, affecting their components in various detrimental ways. Among the methods for addressing this issue, the combination of electrokinetic remediation and permeable reactive barrier (EKR-PRB) is particularly effective in low-permeability soils. This approach stands out due to its scalability, environmental benefits, cost-efficiency, and flexibility in application. The efficacy of EKR-PRB is significantly influenced by the choice of reactive materials. This paper provided beneficial insights into EKR-PRB, highlighting their fundamental mechanisms, definitions, and principles. It also comprehensively reviewed reactive materials such as activated carbon (AC), zeolite, zero-valent iron (ZVI), nanoscale zero-valent iron (nZVI), and novel materials, exploring the limitations and challenges associated with these materials. This research focused on evaluating the effectiveness of permeable reactive barrier (PRB) by analyzing their durability, mechanisms of contaminant removal, and structural design within the context of electrokinetic remediation (EKR). Five installation configurations were assessed to determine optimal placement for different pollutant types, with specific setups enhancing removal efficiency significantly. Cost and scalability were analyzed further, revealing that while EKR-PRB are promising for various low-permeability soils, challenges in engineering applications remain due to soil heterogeneity, changes in pH, and limited electroosmotic flow. Enhanced removal efficiency and cost reduction potential highlight EKR-PRB as a viable remediation approach, though further research is necessary for large-scale applications.</div></div>","PeriodicalId":9749,"journal":{"name":"Chemical Engineering Journal Advances","volume":"23 ","pages":"Article 100774"},"PeriodicalIF":5.5,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermodynamic assessment on the extraction of zinc from spent alkaline batteries-PVC waste streams 从废旧碱性电池-聚氯乙烯废液中提取锌的热力学评价
IF 5.5
Chemical Engineering Journal Advances Pub Date : 2025-05-15 DOI: 10.1016/j.ceja.2025.100769
Mohammad Al-Harahsheh , Sanad Altarawneh
{"title":"Thermodynamic assessment on the extraction of zinc from spent alkaline batteries-PVC waste streams","authors":"Mohammad Al-Harahsheh ,&nbsp;Sanad Altarawneh","doi":"10.1016/j.ceja.2025.100769","DOIUrl":"10.1016/j.ceja.2025.100769","url":null,"abstract":"<div><div>Spent Alkaline Batteries (SAB) and Polyvinyl Chloride (PVC) are generated world-wide in large quantities with the absence of a sustainable recycling route. To study their potential co-recycling, we present a theoretical thermodynamic investigation of their co-thermal treatment utilizing the Gibbs free energy minimization approach. In the model, the possibility of recycling SAB and PVC by thermally treating their mixture followed by water leaching is reported. Results suggest that the thermal treatment of washed SAB (WSAB) with PVC at 300 ⁰C and under oxidative conditions promotes the selective chlorination of zinc over iron and manganese (leaving them in their respective oxide forms Fe<sub>2</sub>O<sub>3</sub> and MnO<sub>2</sub>). Simulations also revealed that performing water leaching of the thermally processed residue should be performed in the pH range 2–6 to dissolve zinc selectively while keeping both iron and manganese in their solid phase. Hence, to achieve high extraction selectivity towards zinc, SAB should first be water washed to dissolve sodium and potassium hydroxides. The product from water washing is then thermally treated with PVC (300 ⁰C with oxygen molar ratio above 1). The thermal treatment residue should then be water leached in the pH window 2–6.</div></div>","PeriodicalId":9749,"journal":{"name":"Chemical Engineering Journal Advances","volume":"23 ","pages":"Article 100769"},"PeriodicalIF":5.5,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reusable waste-derived magnetic mesoporous activated carbon for efficient preconcentration and adsorptive removal of fluoroquinolones 可重复使用的废物衍生的磁性介孔活性炭用于氟喹诺酮类药物的高效预富集和吸附去除
IF 5.5
Chemical Engineering Journal Advances Pub Date : 2025-05-13 DOI: 10.1016/j.ceja.2025.100771
Bongiwe Apatia Mvala , Tshimangadzo S. Munonde , Mokae Fanuel Bambo , Kgabo Phillemon Matabola , Philiswa Nosizo Nomngongo
{"title":"Reusable waste-derived magnetic mesoporous activated carbon for efficient preconcentration and adsorptive removal of fluoroquinolones","authors":"Bongiwe Apatia Mvala ,&nbsp;Tshimangadzo S. Munonde ,&nbsp;Mokae Fanuel Bambo ,&nbsp;Kgabo Phillemon Matabola ,&nbsp;Philiswa Nosizo Nomngongo","doi":"10.1016/j.ceja.2025.100771","DOIUrl":"10.1016/j.ceja.2025.100771","url":null,"abstract":"<div><div>In this study, a magnetic mesoporous activated carbon derived from PET waste plastic bottles and acid mine drainage (AMD-mag@PET-MMAC) was employed for the enrichment and adsorptive removal of selected fluoroquinolone (FQ) antibiotics. The quantification of FQ antibiotics in aqueous and real samples was achieved using liquid chromatographic systems. At optimum conditions, the maximum adsorption capacities ranging from 233- 385 mg/g were obtained, confirming the suitability of the adsorbent for the removal of FQs in real water samples. The Langmuir and Pseudo-second order models best described the equilibrium isotherm and kinetic data. The adsorption mechanism involves hydrogen bonding, pore filling, π-π interactions and electrostatic interactions. The analytical performance of the method revealed a linear range of 0.2–100 ng/L with R<sup>2</sup> values greater than 0.99, %RSD values &lt;5 % and LOD and LOQ ranges of 0.06–0.21 and 0.2–0.69 ng/L and 0.6 ng/L, respectively. The method was validated using real wastewater samples spiked with known concentrations of the analytes.</div></div>","PeriodicalId":9749,"journal":{"name":"Chemical Engineering Journal Advances","volume":"23 ","pages":"Article 100771"},"PeriodicalIF":5.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Acryloyl piperidine/pyrrolidine statistical and block copolymers as hydrate inhibitors: effects of cloud point temperature and copolymer microstructure 丙烯酰哌啶/吡咯烷统计和嵌段共聚物作为水合物抑制剂:云点温度和共聚物微观结构的影响
IF 5.5
Chemical Engineering Journal Advances Pub Date : 2025-05-12 DOI: 10.1016/j.ceja.2025.100770
Chong Yang Du, Andrew Phan, Milan Marić, Phillip Servio
{"title":"Acryloyl piperidine/pyrrolidine statistical and block copolymers as hydrate inhibitors: effects of cloud point temperature and copolymer microstructure","authors":"Chong Yang Du,&nbsp;Andrew Phan,&nbsp;Milan Marić,&nbsp;Phillip Servio","doi":"10.1016/j.ceja.2025.100770","DOIUrl":"10.1016/j.ceja.2025.100770","url":null,"abstract":"<div><div>Ongoing investigations on the polymer chemistry and physical properties of kinetic hydrate inhibitors (KHIs) have led to several theories attempting to interpret their inhibition mechanisms during hydrate nucleation and growth, crucial for flow assurance in offshore facilities. Namely, numerous reports have studied the relationship between the hydrophobicity, cloud point temperatures (CPTs) and copolymer microstructures of KHIs and their abilities to reduce hydrate formation. To verify these theories, statistical and block copolymers with various compositions (0, 30, 50, 70, 100 mol.%) of acryloyl pyrrolidine (APy) with acryloyl piperidine (APi) were synthesized and sI methane hydrate growth kinetics were measured at 2 °C and 4646 kPa. All tested KHI samples reduced methane consumption to &lt;25 % of that of an uninhibited system. Poly(APi) with bigger amide rings and lower CPT acted as a poorer KHI than the more hydrophilic poly(APy). The statistical copolymers with a wide range of CPTs from 4 to 48 °C showed that KHI performance was not influenced by CPT, as the sI hydrate growth rate exhibited a nearly linear relationship with respect to copolymer composition. On the other hand, results of block copolymers suggest that the thermoresponsive behavior of these surfactant-like additives might play a role during hydrate growth inhibition. The block copolymer with 30 mol.% APi acted as the best KHI amongst all tested samples, while the block copolymer with 70 mol.% APi acted as the poorest. The results were significantly different from the statistical copolymers with similar composition; thus, copolymer microstructure is also a factor to consider during KHI design.</div></div>","PeriodicalId":9749,"journal":{"name":"Chemical Engineering Journal Advances","volume":"23 ","pages":"Article 100770"},"PeriodicalIF":5.5,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Balancing the oxidation of endogenous organics and macronutrient recovery from human urine treated with fenton’s reagent: A targeted metabolomics study fenton试剂处理人体尿液平衡内源性有机物氧化和宏量营养素回收:一项靶向代谢组学研究
IF 5.5
Chemical Engineering Journal Advances Pub Date : 2025-05-12 DOI: 10.1016/j.ceja.2025.100772
Caitlin Courtney , Abdullah Al-Saadi , Prithvi Simha
{"title":"Balancing the oxidation of endogenous organics and macronutrient recovery from human urine treated with fenton’s reagent: A targeted metabolomics study","authors":"Caitlin Courtney ,&nbsp;Abdullah Al-Saadi ,&nbsp;Prithvi Simha","doi":"10.1016/j.ceja.2025.100772","DOIUrl":"10.1016/j.ceja.2025.100772","url":null,"abstract":"<div><div>Human urine is a promising resource for circular fertiliser production, but its high concentrations of organic and inorganic compounds present both challenges and opportunities for effective treatment. This study evaluates Fenton oxidation for selectively degrading endogenous organic metabolites in acidified, unhydrolysed urine while preserving critical nutrients such as urea. Using targeted metabolomics, over 200 organic metabolites were identified in urine, with creatinine, citric acid, hippuric acid, and methylhistidine comprising half of the total organic metabolite load (ΣOMs = 3.23 g L⁻¹). Under optimised conditions (pH 4.0, 1:1 Fe²⁺: H₂O₂ molar ratio), 59 % of ΣOMs were degraded in unconcentrated urine treated with 1 g H₂O₂ L⁻¹. Increasing the H<sub>2</sub>O<sub>2</sub> dose in unconcentrated urine, or treating concentrated urine obtained through evaporative water removal, resulted in higher ΣOMs degradation but also increased urea oxidation, highlighting a trade-off between efficient COD removal and nutrient recovery. COD removal was 38 % at pH 4.0 and 27 % at pH 6.0, suggesting that Fenton oxidation could be applied to H₂O₂ stabilised urine without strict pH adjustment. Real urine differed significantly from synthetic urine, requiring five times more Fe²⁺ catalyst for complete H₂O₂ activation, with peroxide consumption occurring within five minutes compared to two hours in synthetic urine. Organic compounds in urine scavenged Fe³⁺, forming iron-organic complexes that disrupted Fe²⁺ regeneration and contributed to iron precipitation at higher pH values. These findings demonstrate that Fenton oxidation can be optimised to achieve selective degradation of undesirable organics while preserving plant-essential nutrients in urine collected within resource-oriented sanitation systems.</div></div>","PeriodicalId":9749,"journal":{"name":"Chemical Engineering Journal Advances","volume":"23 ","pages":"Article 100772"},"PeriodicalIF":5.5,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fantastic composition of metal-organic frameworks with layered double hydroxides: Insights into synthesis, applications, and synergistic effects 具有层状双氢氧化物的金属有机框架的奇妙组成:对合成,应用和协同效应的见解
IF 5.5
Chemical Engineering Journal Advances Pub Date : 2025-05-11 DOI: 10.1016/j.ceja.2025.100768
Arash Vahdatkhah, Hossein Hosseinzadeh, Siamak Javanbakht, Reza Mohammadi
{"title":"Fantastic composition of metal-organic frameworks with layered double hydroxides: Insights into synthesis, applications, and synergistic effects","authors":"Arash Vahdatkhah,&nbsp;Hossein Hosseinzadeh,&nbsp;Siamak Javanbakht,&nbsp;Reza Mohammadi","doi":"10.1016/j.ceja.2025.100768","DOIUrl":"10.1016/j.ceja.2025.100768","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) and layered double hydroxides (LDHs) have emerged as two categories of materials that have attracted considerable attention in recent years owing to their distinct properties and possible applications, sparking interest among researchers and scientists alike. The amalgamation of these two materials has paved the way for creating innovative composites that showcase superior properties and demonstrate synergistic effects, revolutionizing the realm of material science. The primary objective of this comprehensive review is to offer valuable insights into the intricate processes involved in the synthesis, diverse applications, and the synergistic effects exhibited by these advanced composites, shedding light on their immense potential across a wide array of fields. Delving into the synthesis of MOF-LDH composites, this discourse extensively covers the various sophisticated methodologies employed in fabricating these materials, encompassing techniques like solvothermal, hydrothermal, and co-precipitation synthetic methods that have been pivotal in shaping the landscape of composite materials research. Moreover, the review meticulously examines the synergistic effects that ensue from the fusion of MOFs and LDHs, elucidating on the augmented surface area, heightened porosity, and enhanced reactivity that define the unique characteristics of these composite materials, thereby paving the way for groundbreaking advancements in material science. Noteworthy is the emphasis placed on the vast potential of these composites across various domains, accentuating their pivotal role in energy storage and conversion technologies, adsorption strategies, as well as cutting-edge biomedical applications, signifying a new era of innovation and progress in the field of advanced materials.</div></div>","PeriodicalId":9749,"journal":{"name":"Chemical Engineering Journal Advances","volume":"23 ","pages":"Article 100768"},"PeriodicalIF":5.5,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of PTFE@PFAC core-shell composite particle as a highly efficient anti-dripping agent for PC 高效PC防滴剂PTFE@PFAC核壳复合颗粒的合成
IF 5.5
Chemical Engineering Journal Advances Pub Date : 2025-05-10 DOI: 10.1016/j.ceja.2025.100765
Hang Wang, Wenwen Fan, Yifan Hu, Ruohan Zhang, Wen Yang, Haoyu Guo, Lan Lei, Chunjie Xie, Hui Li
{"title":"Synthesis of PTFE@PFAC core-shell composite particle as a highly efficient anti-dripping agent for PC","authors":"Hang Wang,&nbsp;Wenwen Fan,&nbsp;Yifan Hu,&nbsp;Ruohan Zhang,&nbsp;Wen Yang,&nbsp;Haoyu Guo,&nbsp;Lan Lei,&nbsp;Chunjie Xie,&nbsp;Hui Li","doi":"10.1016/j.ceja.2025.100765","DOIUrl":"10.1016/j.ceja.2025.100765","url":null,"abstract":"<div><div>Polycarbonate (PC) is kind of engineering plastics which is widely used in the fields such as automotive manufacturing and building materials due to its excellent transparency, high strength and good reprocessing ability. However, the anti-dripping performance of PC is poor and the PC is prone to producing molten droplets during the burning process, which can cause the spread of fire. This drawback severely limits the application range of PC. Owing to its excellent fiber forming ability, thermal stability and chemical stability, polytetrafluoroethylene (PTFE) could be applied as a kind of anti-dripping agent in the production of thermoplastic resins. In this work, a kind of novel fluorinated acrylate coated PTFE composite anti-dripping agent (PTFE@PFAC particle) was successfully prepared with the PTFE as the core layer and methyl methacrylate, butyl acrylate, and fluorinated acrylate as the shell layer. The diameter of the PTFE@PFAC particle is in the range of 200–250 nm. After melt blending with PC, PC/PTFE@PFAC composite was successfully prepared. It is found that the addition of a certain amount of PTFE@PFAC particles has little influence on the processability, transparency, crystallinity, tensile strength and thermal stability of PC/PTFE@PFAC composites. Surprisingly, the addition of a small amount of PTFE@PFAC (0.5 wt %) can significantly improves the anti-dripping and flame retardance properties of the composite, which was reflected in the extension of anti-dripping time, the increase of ultimate oxygen index, the significant reduction of heat release rate and the total smoke production. Furthermore, the PTFE@PFAC particle could also be used as an efficient anti-dripping agent in the preparation of PP composite.</div></div>","PeriodicalId":9749,"journal":{"name":"Chemical Engineering Journal Advances","volume":"23 ","pages":"Article 100765"},"PeriodicalIF":5.5,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bio-based hydrophobic fiberglass filters functionalized with RPTES for efficient oil-water separation 具有RPTES功能的生物基疏水玻璃纤维过滤器,可实现高效油水分离
IF 5.5
Chemical Engineering Journal Advances Pub Date : 2025-05-08 DOI: 10.1016/j.ceja.2025.100764
Meghdad Pirsaheb , Ali Ashraf Derakhshan , Ali Rostami
{"title":"Bio-based hydrophobic fiberglass filters functionalized with RPTES for efficient oil-water separation","authors":"Meghdad Pirsaheb ,&nbsp;Ali Ashraf Derakhshan ,&nbsp;Ali Rostami","doi":"10.1016/j.ceja.2025.100764","DOIUrl":"10.1016/j.ceja.2025.100764","url":null,"abstract":"<div><div>This study introduces a sustainable and highly efficient method for oil-water separation using fiberglass fabric (FG-Castor) functionalized with ricinoleamidopropyl-triethoxysilane (RPTES), a novel hydrophobic compound synthesized from castor oil via a solvent-free aminolysis reaction. The resulting superhydrophobic filter exhibits a high water contact angle of 146.31° and effectively separates petroleum-based solvents—including gasoline, kerosene, and n-hexane—from water under gravity-driven conditions. Characterization by SEM-EDX, X-ray mapping, and ¹³C NMR confirmed successful surface modification and amide bond formation. The FG-Castor filters demonstrated exceptional separation efficiency (up to 98.71 %) and high permeated flux (up to 5760 L/m²·h), while maintaining stable performance over 20 reuse cycles. The filters also retained high efficiency under varying pH and temperature conditions, highlighting their robustness and versatility. These findings demonstrate the potential of bio-derived, solvent-free surface treatments in advancing green, cost-effective technologies for industrial wastewater management and oil spill remediation.</div></div>","PeriodicalId":9749,"journal":{"name":"Chemical Engineering Journal Advances","volume":"23 ","pages":"Article 100764"},"PeriodicalIF":5.5,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental and computational analysis of coated milli-structured bioreactor with immobilized nitrilase for continuous production of nicotinic acid 固定化硝化酶包被微结构生物反应器连续生产烟酸的实验与计算分析
IF 5.5
Chemical Engineering Journal Advances Pub Date : 2025-05-01 DOI: 10.1016/j.ceja.2025.100766
Maïté Michaud , Chalore Teepakorn , Véronique De Berardinis , Anne Zaparucha , Guillaume Nonglaton , Pierre Coste , Zoé Anxionnaz-Minvielle
{"title":"Experimental and computational analysis of coated milli-structured bioreactor with immobilized nitrilase for continuous production of nicotinic acid","authors":"Maïté Michaud ,&nbsp;Chalore Teepakorn ,&nbsp;Véronique De Berardinis ,&nbsp;Anne Zaparucha ,&nbsp;Guillaume Nonglaton ,&nbsp;Pierre Coste ,&nbsp;Zoé Anxionnaz-Minvielle","doi":"10.1016/j.ceja.2025.100766","DOIUrl":"10.1016/j.ceja.2025.100766","url":null,"abstract":"<div><div>In complement to or as a replacement for environmentally-costly chemical transformations, biocatalytic synthesis is attracting increasing interest. To make it competitive, basic research on process engineering with continuous operations using immobilized enzymes must be pursued. Micro-fluidic reactors are generally operated with wall-immobilized enzymes, but their implementation at industrial scale requires both parallelization and characteristic dimension increases. As part of this scale-up, research is required on millimeter-scale reactors to assess their bio-performance and potential limitations. Here, we present the first study of a pillar-structured milli-reactor. We studied this in-flow bioreactor with immobilized nitrilase and numerically characterized it by CFD modeling. After 5 days of continuous operation, a mean space-time-yield of 0.80 mM.min<sup>-1</sup> and a turnover number of 148 mg<sub>product</sub>.mg<sub>enz</sub><sup>-1</sup> were reached. These promising performance results and the model validation were then used in a numerical study to determine how the reactor’s performance could be optimized. Under strict laminar conditions, strategies like increasing the surface-to-volume ratio or distribution of the enzyme all over the developed reactor surfaces are the main characteristics contributing to conversion improvement. Pillar reactors have a greater scale-up potential than zigzag reactors, requiring lower pumping energies for a given conversion rate. Finally, we hypothesize that going to hydrodynamic conditions with instabilities combined with more active enzymes would be an interesting avenue for future investigation to reach higher levels of process intensification.</div></div><div><h3>Statement_of_novelty_and_significance</h3><div>Micro-scale devices with wall-immobilized enzymes intensify mass transfers but the low productivity per unit requires complex parallelization to meet industrial throughput. This study proposes an experimental characterisation of a milli-size reactor coated with commercial polymethylmethacrylate beads on the surface. Compared to batch assays, the productivity has been intensified by 14-fold along with an increase of the space-time-yield of 27-fold. Reactor design engineering has been performed with CFD screening. Room for optimization has been elucidated with parameters including surface-to-volume ratio, enzyme distribution and liquid flow with instabilities using more active enzymes.</div></div>","PeriodicalId":9749,"journal":{"name":"Chemical Engineering Journal Advances","volume":"22 ","pages":"Article 100766"},"PeriodicalIF":5.5,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Physicochemical transformation and toxic potential of polyethylene terephthalate (PET) fragments exposed to natural daylight 暴露在自然光下的聚对苯二甲酸乙二醇酯(PET)碎片的物理化学转化和毒性潜力
IF 5.5
Chemical Engineering Journal Advances Pub Date : 2025-05-01 DOI: 10.1016/j.ceja.2025.100763
Anna Tzamaria , Stefanos Dailianis , Myrto Velona , Amaia Soto Βeobide , Antonis Eleftherianos , Vassilios Triantafyllidis , Maria Antonopoulou
{"title":"Physicochemical transformation and toxic potential of polyethylene terephthalate (PET) fragments exposed to natural daylight","authors":"Anna Tzamaria ,&nbsp;Stefanos Dailianis ,&nbsp;Myrto Velona ,&nbsp;Amaia Soto Βeobide ,&nbsp;Antonis Eleftherianos ,&nbsp;Vassilios Triantafyllidis ,&nbsp;Maria Antonopoulou","doi":"10.1016/j.ceja.2025.100763","DOIUrl":"10.1016/j.ceja.2025.100763","url":null,"abstract":"<div><div>Since the widespread use of plastics in various aspects of daily life has led to significant environmental concern due to the generation of microplastics (MPs) and the leaching of chemical additives, the present study investigates the physicochemical transformation and characterization as well as the toxic potential of polyethylene terephthalate (PET) fragments exposed to natural daylight for 15 and 30 days (daylight-aged or photoaged PET). Raman analysis confirmed PET composition, while GC–MS and ICP-MS/MS analysis identified organic compounds, including plasticizers, and inorganic metals, such as antimony and titanium. According to the results, photoaged PET leachates had a more complicated composition than samples not exposed to daylight (PET<sub>virgin</sub>), as higher number of organic and inorganic compounds were detected, indicating enhanced degradation under light exposure. Ecotoxicological bioassays were also performed using <em>Tisochrysis lutea</em> and <em>Aliivibrio fischeri</em> as biological models and light-aged PET leachates were found to have higher toxic effects, leading to growth inhibition in microalgae and a reduction in the bioluminescence of bacteria. Exposure to light-aged PET leachates caused initial algal growth inhibition in <em>T. lutea</em>, as well as bacterial bioluminescence inhibition in <em>A. fischeri</em> which later diminished. Moreover, chlorophyll and carotenoid content were measured to assess potential effects on microalgae, further elucidating the ecological consequences of PET photodegradation. These findings underscore the complex interactions between plastic degradation, additive leaching, and biological responses, emphasizing the need for comprehensive assessments to understand the ecological ramifications of (micro)plastic pollution. Moreover, the risks of plastic pollution are highlighted, rendering the development of eco-friendly plastic alternatives and enactment of stricter waste management regulations an urgent necessity.</div></div>","PeriodicalId":9749,"journal":{"name":"Chemical Engineering Journal Advances","volume":"22 ","pages":"Article 100763"},"PeriodicalIF":5.5,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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