Journal of the Taiwan Institute of Chemical Engineers最新文献

{"title":"Dual functional Ag2MoO4/thickness-controlled g-C3N4 composites for enhanced photocatalytic and adsorption activity","authors":"Xuanbo Zhou ,&nbsp;Xu Guo ,&nbsp;Lihong Dong ,&nbsp;Wanli Zhou ,&nbsp;Xiumei Li","doi":"10.1016/j.jtice.2024.105863","DOIUrl":"10.1016/j.jtice.2024.105863","url":null,"abstract":"<div><h3>Background</h3><div>Nanocomposites have a wide range of applications in the field of energy and environment, especially in the treatment of organic pollutants and radioactive materials in water, so the development of new nanocomposites for the treatment of environmental pollution is urgent.</div></div><div><h3>Methods</h3><div>The morphology of g-C₃N₄ has a significant impact on its properties. The g-C₃N₄ with different thicknesses were prepared by thermal oxidation exfoliation and etching of bulk g-C₃N₄ (CNB) under air atmosphere, and separately combined with Ag₂MoO₄. The samples were characterized with X-ray diffraction, scanning electron microscopy (SEM), UV–vis diffuse reflectance spectra, X-ray photoelectron spectroscopy.</div></div><div><h3>Significant findings</h3><div>The results showed that the composite of Ag₂MoO₄ formed of g-C₃N₄ with a thickness of 24.7 nm exhibited excellent photocatalytic degradation property. The photo-degradation rate of methylene blue (MB), rhodamine B (RhB) and methyl orange (MO) were 97.9 % (30 min), 94.2 % (40 min) and 91.3 % (40 min), respectively. Differently, when Ag₂MoO₄ is combined with g-C₃N₄ with a thickness of 10.0 nm, which show excellent adsorption performance. The adsorption amount of I₂ can reach 4.487 g/g under 75 °C of saturated I₂ vapor. And the nanocomposite manifested splendid adsorption efficiency of MB (95.8 %, 6 min), RhB (93.2 %, 6 min) and MO (94.3 %, 6 min), respectively. The nanocomposite achieved the bifunctional characteristics of degradation of organic pollutants and efficient adsorption.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105863"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131838","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}

{"title":"A novel high durability ZnCl2-NH4Cl threshold-WIS (water-in-salt) electrolyte for rechargeable zinc-air battery","authors":"Yu-Xuan Liu ,&nbsp;Ting-Yun Kan ,&nbsp;Yi-Hsiang Hsieh ,&nbsp;Yuan-Yu Ho ,&nbsp;Yu-Hao Chang ,&nbsp;Ya-Mei Weng ,&nbsp;Cheng-Hao Yang ,&nbsp;Cheng-Xin Yu ,&nbsp;Tzu-Chien Hsu ,&nbsp;Yu-Hsiang Huang ,&nbsp;Yi-Ting Tsai ,&nbsp;Chia-Chi Hsu ,&nbsp;Chi-Chung Hua ,&nbsp;Yuan-Yao Li ,&nbsp;Huang-Wei Chang ,&nbsp;Yu-Chun Fu","doi":"10.1016/j.jtice.2024.105909","DOIUrl":"10.1016/j.jtice.2024.105909","url":null,"abstract":"<div><h3>Background</h3><div>For rechargeable zinc-air battery (ZAB), KOH electrolyte exhibits poor zinc reversibility, carbonate formation, hydrogen evolution, ZnO passivation, dendrite formation, and high corrosion. Recently, 23.8M ZnCl₂ hydrate melt electrolyte was reported to be without these problems but suffers from high viscosity, low conductivity, and pure oxygen requirement. The authors realized that acidic environment enables all the durability advantages with the exception of anti-dendrite formation, which is due to the elimination of the concentration gradient at sufficiently high salt concentration.</div></div><div><h3>Methods</h3><div>As durability advantages of concentrated ZnCl₂ electrolyte has often been associated with the water-in-salt (WIS) condition, 10m ZnCl₂ at the threshold-WIS concentration was thought to be the minimum concentration to enable the durability benefits and was selected to be tested with NH₄Cl added for pH stability. 10 m ZnCl₂ was tested with varying NH₄Cl for changes in viscosity, conductivity, acidity, and density. Then Raman spectroscopy, chronoamperometry, linear sweep voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge-and-discharge cycling were done to compare the ZnCl₂-NH₄Cl mixture to 6M KOH.</div></div><div><h3>Significant findings</h3><div>Results show 10 m ZnCl₂ w/wo 5 m NH₄Cl gave superior performance with ZAB cycling for &gt;6000 cycles/&gt;60 days at 1 mA/cm² and &gt; 89% voltage efficiency without the durability problems associated with KOH.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105909"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131215","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}

{"title":"Experimental Investigation of Carbon-Based Nano-Enhanced Phase Change Materials Assimilated Photovoltaic Thermal System: Energy, Exergy and Environmental Assessment","authors":"Reji Kumar Rajamony ,&nbsp;A.K. Pandey ,&nbsp;A.G.N. Sofiah ,&nbsp;Johnny Koh Siaw Paw ,&nbsp;Subbarama Kousik Suraparaju ,&nbsp;Amanullah Fatehmulla ,&nbsp;K. Chopra ,&nbsp;M. Samykano ,&nbsp;Rizwan A. Farade","doi":"10.1016/j.jtice.2024.105835","DOIUrl":"10.1016/j.jtice.2024.105835","url":null,"abstract":"<div><h3>Background</h3><div>Photovoltaic thermal systems (PVT) are advanced systems designed to simultaneously generate heat and electricity. However, their commercial performance has not yet reached optimal levels, with efficient thermal regulation being a major challenge that directly affects energy production and efficiency.</div></div><div><h3>Methods</h3><div>This research introduces an innovative approach to enhancing PVT system performance by integrating active water cooling with passive functionalized carbon-based nano-enhanced phase change materials (NePHACMs) as a cooling medium. Four configurations were studied: PV, PVT, PVT-PHACM, and PVT-NePHACM, with fluid flow rates of 0.4-0.8 L/min. Indoor experiments were conducted for PV and PVT systems, while TRNSYS simulations assessed PVT-PHACM and PVT-NePHACM systems. The exergy approach was used to evaluate the energy available for productive use and exergy loss and entropy generation have been analyzed to enhance the electrical energy and thermal storage of the system. Additionally, carbon mitigation and carbon credit gain for all configurations were discussed.</div></div><div><h3>Significant Findings</h3><div>The NePHACM formulation significantly enhanced the system's thermal conductivity by 104%, reduced PV temperature, and improved both electrical and thermal energy production. The system achieved an overall energy efficiency of 85.02% and an exergy efficiency of 12.37%. Additionally, the hybrid system demonstrated exceptional effectiveness in reducing CO₂ emissions, highlighting NePHACM's potential to improve PVT system commercialization, especially for nocturnal applications.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105835"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132354","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}

{"title":"Metabolic engineering of Escherichia coli for improved cofactor regeneration in lactate to acetoin via whole-cell conversion","authors":"Chan-Hsiang Hsu,&nbsp;Sefli Sri Wahyu Effendi,&nbsp;Wan-Wen Ting,&nbsp;Yu-Hsiu Li,&nbsp;I-Son Ng","doi":"10.1016/j.jtice.2024.105895","DOIUrl":"10.1016/j.jtice.2024.105895","url":null,"abstract":"<div><h3>Background</h3><div>Acetoin is a crucial intermediate in asymmetric syntheses of high-value chemicals and pharmaceuticals. However, its production still relies on traditional fossil-based processes. Developing efficient microbial cell factories for green and low-cost acetoin production is urgently needed.</div></div><div><h3>Methods</h3><div>Acetoin was produced from inexpensive and shortcut lactate substrate using whole-cell <em>Escherichia coli</em> through overexpression of highly active α-acetolactate synthetase and decarboxylase from <em>Bacillus subtilis</em> (annotated as SD). Precise stepwise optimization of pathway and enzymatic reaction was executed by (1) harboring the most efficient cofactor-regenerating system, (2) tuning expression design, (3) disrupting byproduct pathway, and (4) optimizing a series of biotransformation parameters.</div></div><div><h3>Significant Findings</h3><div>The recombinant <em>E. coli</em> successfully produced acetoin. The titer was gradually increased by expressing a pyruvate-producing gene from NAD⁺ dependent or independent system and its cofactor regeneration systems. Co-expressing lactate oxidase (<em>lox</em>) and catalase (<em>cat</em>) achieved a conversion efficiency of 50 % and eliminated NAD⁺ usage. The conversion efficiency was further pulled by knocking out acetate-generating genes (<em>pta</em> and <em>pox</em>B), thus boosting acetoin conversion to 92.4 %. Under optimized whole-cell biotransformation parameters, the highest acetoin titer reached 20.6 g/L within 30 h. This work provides an economical biomanufacturing process for acetoin from lactate via whole-cell bioconversion with remarkable yield.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105895"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132357","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}

{"title":"Sulfur- layered porous carbon nanostructured matrix - Co3O4 composites: An enhancement of cycling performance in sodium-sulfur battery","authors":"Premnahth Jeyaraj Janshirani ,&nbsp;Suba Devi Rengapillai ,&nbsp;Soundarrajan Elumalai ,&nbsp;Raghu Subashchandrabose ,&nbsp;Wei-Ren Liu ,&nbsp;Sivakumar Marimuthu","doi":"10.1016/j.jtice.2025.105978","DOIUrl":"10.1016/j.jtice.2025.105978","url":null,"abstract":"<div><h3>Background</h3><div>For future applications in electric vehicles, power tools, portable devices, and other areas, developing effective cathode materials for sodium-sulfur batteries is crucial. Sulfur is a promising low-cost cathode material due to its high energy density, environmental friendliness, and natural abundance. Sodium-sulfur batteries, with a theoretical capacity of 1672 mAh g^-1, offer a higher capacity compared to conventional sodium-ion batteries. However, their use has been limited by the dissolution of intermediate polysulfides, which can impact performance.</div></div><div><h3>Methods</h3><div>In this study, sulfur was blended with various carbon matrices, including hard carbon (HC), reduced graphene oxide (rGO), and multi-walled carbon nanotubes (MWCNTs), along with Co₃O₄, through a solid-state reaction and melt diffusion process to prepare sulfur/ Co₃O₄/carbon template composites. These composites were then used as cathodes in sodium-sulfur (Na-S) batteries. The physical and electrochemical characteristics of the prepared composites were investigated using various characterization techniques. Raman analysis was employed to confirm the presence of carbon, while X-ray diffraction (XRD) patterns indicated that sulfur is in an orthorhombic structure.</div></div><div><h3>Significant findings</h3><div>The sulfur/ Co₃O₄/carbon template composite with 60% sulfur (SCR composite) demonstrated significantly enhanced cycling performance, achieving 925 mAh g^-1 at 0.2 C for the initial cycle. The incorporation of Co₃O₄ effectively suppressed the polysulfide shuttle effect, thereby sustaining the electrode's capacity. Additionally, the carbon matrix played a crucial role in confining the sulfur within its pores, which helped to limit the loss of active material.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"170 ","pages":"Article 105978"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143144523","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}

{"title":"Eco-Friendly Synthesis of Crown-Ether Functionalized Silica Nanospheres from Sorghum Waste for Thallium Adsorption","authors":"Saeed Shirazian ,&nbsp;Sameer Alshehri ,&nbsp;Atiah H. Almalki ,&nbsp;Rami M. Alzhrani ,&nbsp;Niloofar Pirestani ,&nbsp;Roozbeh Soltani","doi":"10.1016/j.jtice.2024.105851","DOIUrl":"10.1016/j.jtice.2024.105851","url":null,"abstract":"<div><h3>Background</h3><div>An environmentally sustainable method for synthesizing aza-crown ether functionalized fibrous silica nanospheres was developed using sorghum waste as a biogenic silica source. The goal was to create a novel adsorbent for thallium [Tl(I)] removal from water.</div></div><div><h3>Methods</h3><div>A direct synthesis approach was used to anchor aza-crown ether onto the silica fibers. The material was characterized for its fibrous spherical morphology and surface area (242 m² g^–1), and the successful grafting of the functional groups was confirmed. Adsorption studies were conducted to optimize parameters for Tl(I) removal, and kinetic, isothermal, and thermodynamic analyses were performed.</div></div><div><h3>Findings</h3><div>The material's maximum adsorption capacity, based on the Langmuir model at 298 K, was 13.1 mg g^–1 under optimal conditions (pH 9.0, 25 mL solution, 60 min contact time, 0.2 g L^–1 adsorbent, 185 rpm stirring). Kinetic analysis showed a closer fit to the pseudo-first-order model, with three-stage diffusion. Thallium adsorption was endothermic (<span><math><mrow><mstyle><mi>Δ</mi></mstyle><msubsup><mi>H</mi><mrow><mtext>Ads</mtext><mo>.</mo></mrow><mi>o</mi></msubsup></mrow></math></span>=38.72 kJ mol^–1), spontaneous (<span><math><mrow><mstyle><mi>Δ</mi></mstyle><msubsup><mi>G</mi><mrow><mtext>Ads</mtext><mo>.</mo></mrow><mi>o</mi></msubsup></mrow></math></span> ranging from –46.81 to –49.68 kJ mol^–1), accompanied by an increase in surface randomness (<span><math><mrow><mstyle><mi>Δ</mi></mstyle><msubsup><mi>S</mi><mrow><mtext>Ads</mtext><mo>.</mo></mrow><mi>o</mi></msubsup></mrow></math></span>=0.287 kJ mol^–1 K^–1).</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105851"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131847","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}

{"title":"Neural network modeling of non-Newtonian NEPCMs suspension in a non-Darcy porous medium under LTNE conditions","authors":"Tahar Tayebi ,&nbsp;Rifaqat Ali ,&nbsp;Marouan Kouki ,&nbsp;M.K. Nayak ,&nbsp;Ahmed M. Galal","doi":"10.1016/j.jtice.2024.105897","DOIUrl":"10.1016/j.jtice.2024.105897","url":null,"abstract":"<div><h3>Background</h3><div>Analyzing buoyancy-driven convection in porous media has numerous applications in chemical processing and geothermal energy extraction. The complication of heat transfer (HT) in porous media, especially under Local Thermal Non-Equilibrium (LTNE) conditions, may need sophisticated examination to precisely predict system behavior. In addition, when it comes to using nanomaterials with the aim of enhancing heat transfer efficiency of thermal systems, nano-encapsulated phase change materials (NEPCMs) would offer a promising solution. NEPCMs merge the high latent heat storage capacity of phase change materials (PCMs) with nanoparticles' improved thermal conductivity, making them ideal for energy storage, electronic cooling, and thermal and solar energy applications. In this regard, this study examines the coupled natural convection and entropy generation of a non-Newtonian NEPCM suspension within a fluid-saturated porous hexagonal enclosure. The Forchheimer-Brinkman-extended Darcy (FBED) model is established to characterize the interaction between the porous medium and the NEPCM suspension flow. The thermal interaction between the suspension and the solid is analyzed using LTNE assumptions, where both NEPCMs suspension and solid matrix temperatures exhibit local fluctuations.</div></div><div><h3>Methods</h3><div>Governing equations of the system are solved using the finite element method (FEM) and the average Nusselt numbers for both phases are assessed through an artificial neural network (ANN)-based multi-layer perceptron (MLP) algorithm. This algorithm is further employed to conduct regression analysis, evaluate the mean square error, and analyze the error histogram of the neural network.</div></div><div><h3>Significant Findings</h3><div>The results indicate that while the same parameters influence heat transfer in both phases, the suspension phase is more sensitive to variations in <em>Ra, Da</em>, and <em>n</em>. In contrast, the solid phase exhibits a relatively stronger dependence on <em>λ</em> and <em>H</em>, with <em>Ste</em> having the least impact on heat transfer in both phases. Furthermore, the regression coefficients are identified as <em>R</em> = 0.99987 for <em>Nu_ave,nf</em> and <em>R</em> = 0.99971 for <em>Nu_ave</em>_,s indicating a strong correlation between the predicted values of the ANN model and the actual values.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105897"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131824","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}

{"title":"Artificial neural network and CBS-FEM techniques for mixed convection in lid-driven tank heated by triangular fins and filled with permeable medium: Two-energy equations model","authors":"Sameh E. Ahmed,&nbsp;Z.A.S. Raizha,&nbsp;Fatma Alsubaie","doi":"10.1016/j.jtice.2024.105850","DOIUrl":"10.1016/j.jtice.2024.105850","url":null,"abstract":"<div><h3>Background</h3><div>Two equations are proposed to simulate the thermal fields, and two formulations are introduced to examine the irreversibility of the mixed convection within lid-driven tanks. The forced flow is due to the movements of the upper irregular edge while the buoyancy-driven flow is due to bottom heated triangular fins. A permeable medium fills the domain while heat generation is considered for the fluid- and solid phases. Besides, the work suspension is water-based hybrid nanofluids and the other components are Cu and Al₂O₃. Furthermore, an inclined Lorentz force takes place in the flow area.</div></div><div><h3>Methods</h3><div>The Characteristics-Based Split (CBS) algorithm with semi-implicit technique is applied for the gradients of the pressure and the Galerkin Finite Element Method (FEM) is used to solve all the governing equations. Also, an effective ANN analyses are performed to predict some important physical quantities such as horizontal and vertical velocity components.</div></div><div><h3>Significant findings</h3><div>The case where the upper irregular edge moves from left to right (Case 1) gives a higher horizontal velocity compared to Case 2 (the upper movement has the opposite direction of Case 1). The higher values of the interface heat transfer coefficient cause the buoyancy-driven flow to be dominant compared to the forced flow.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105850"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131352","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}

{"title":"Modelling and simulation of an integrated coupled reactor for hydrogen production and carbon dioxide utilisation in an integrated fuel cell power system","authors":"Mahnoor Tahir ,&nbsp;Muhammad Wasim Tahir ,&nbsp;Muhammad Yousaf Arshad ,&nbsp;Nguyen Van Duc Long ,&nbsp;Anam Suhail Ahmad ,&nbsp;Nam Nghiep Tran","doi":"10.1016/j.jtice.2024.105857","DOIUrl":"10.1016/j.jtice.2024.105857","url":null,"abstract":"<div><div>In today's world, the need for sustainable energy solutions is paramount to address the ongoing crisis of increasing greenhouse gas emissions and global warming. Industries heavily reliant on fossil fuels must explore alternative energy sources. Hydrogen, with its high heating value and zero direct emissions, has emerged as a promising fuel for the future. Electrolytic hydrogen production has gained significance as it enables demand-side response, grid stabilization using excess energy, and the mitigation of curtailment from intermittent renewable energy sources (RES) such as solar and wind. Advanced combined heat and power (CHP) systems comprise of Solid oxide fuel cell (SOFC) module and a coupled reforming reactor to capture energy contained in the SOFC exhaust gases from SOFC. In present work, 3D CFD model of an experimental coupled reactor used for onsite hydrogen production is developed and implemented into ANSYS Fluent® software. The study is aimed at optimizing the reactor performance by identifying appropriate kinetic models for reforming and combustion reactions. SOFC anode off-gas (AOG) comprising mainly of unconverted hydrogen is combined with methane combustion to enhance thermal efficiency of the reactor and hence the CHP system. Kinetic models for catalytic reforming and combustion are implemented into ANSYS Fluent® through custom-built user defined functions (UDFs) written in C programming language. Simulation results are validated with experimental data and found in good agreement. AOG assisted combustion of methane shows a substantial improvement in thermal efficiency of the system. Improvement in thermal efficiency and reduction in carbon-based fuel demand, AOG utilization contributes to sustainable hydrogen production and curtailment of greenhouse gas emissions.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105857"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"A low-cost recyclable protonated 3D network gel for efficient Pb2+ capturing from contaminated wastewater","authors":"Yinhui Zhang,&nbsp;Mengshi Mou,&nbsp;Lin Dong,&nbsp;Hongmei Yu","doi":"10.1016/j.jtice.2024.105853","DOIUrl":"10.1016/j.jtice.2024.105853","url":null,"abstract":"<div><h3>Background</h3><div>As a dangerous heavy metal element, lead can pose a serious health hazard to living organisms even at very low concentrations. The aim of the present work was to study the Pb²⁺ adsorption by surface protonated sodium alginate gel adsorbents (SA/H⁺ gel beads).</div></div><div><h3>Methods</h3><div>First, surface protonated sodium alginate gel adsorbents (SA/H⁺ gel beads) were synthesized by a simple two-step method. Secondly, the adsorption properties of the gel material were optimized and determined by batch adsorption experiments.</div></div><div><h3>Significant findings</h3><div>The adsorption experiments showed that the limiting adsorption capacity of SA/H⁺ hydrogel beads for Pb²⁺ could reach 307.90 mg/g under the conditions of pH=5 and temperature of 298 K. The results of isotherm and kinetic studies showed the Langmuir isotherm and pseudo-second order kinetic model were the best fitted models (R² &gt; 0.99), which indicated that the adsorption process was a spontaneous heat absorption process with chemisorption dominated by the monolayer adsorption. In addition, the SA/H⁺ gel beads showed satisfactory results for removal of Pb²⁺ from actual water samples, excellent regeneration and the removal rate of Pb²⁺ still remained after six “adsorption-desorption-adsorption” cycles close to 96%. Accordingly, the SA/H⁺ gel beads provides a new feasible solution for the adsorption and recovery of Pb²⁺ pollutants in wastewater.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105853"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131353","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}