Journal of the Taiwan Institute of Chemical Engineers最新文献

{"title":"Degradation of methylene blue under visible-light with copper-doped cobalt oxide nanoparticles","authors":"Jamshid Hussain ,&nbsp;Abrar Hussain ,&nbsp;Kuen-Song Lin ,&nbsp;Najmul Hassan ,&nbsp;Asad Abbas ,&nbsp;Sayed Maeen Badshah ,&nbsp;Ndumiso Vukile Mdlovu ,&nbsp;Wajid Rehman","doi":"10.1016/j.jtice.2024.105819","DOIUrl":"10.1016/j.jtice.2024.105819","url":null,"abstract":"<div><h3>Background</h3><div>The development of efficient photocatalysts is greatly essential to degrade organic pollutants such as methylene blue (MB). Copper-doped cobalt oxide nanoparticles (Cu-Co₃O₄ NPs) have shown promise in enhancing photocatalytic activities due to their unique structural and optical properties.</div></div><div><h3>Method</h3><div>A hydrothermal approach was employed to synthesize Cu-Co₃O₄ NPs with varying Cu concentrations for the degradation of MB. XRD confirmed the cubic structure of Co₃O₄ NPs, with crystallite sizes decreasing from 29 nm (pure Co₃O₄) to 20 nm (15 % Cu-doped Co₃O₄). The FE-SEM/TEM micrographs revealed distinct shapes and morphologies. Additional peaks of the used Cu-Co₃O₄ NPs indicated interactions with MB. XANES and EXAFS analyses indicated electron transitions and structural modifications due to increased lattice strain with higher Cu concentrations.</div></div><div><h3>Significance finding</h3><div>This study reveals that Cu-Co₃O₄ NPs exhibited great performance compared to pure Co₃O₄ NPs. The Cu doping in Co₃O₄ nanoparticles enhanced their photocatalytic activity, achieving the highest degradation efficiency of 89 % for MB in 90 min under visible light with 15 % Cu doping. The results indicate the potential of Cu-Co₃O₄ NPs for the degradation of MB, offering valuable insights into the underlying mechanisms and practical applications of these catalysts. The optical band gap decreased from 3.1 eV for undoped Co₃O₄ to 2.1 eV for 15 % Cu-doped Co₃O₄ but increased after degradation, demonstrating their potential applications for environmental cleanup.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105819"},"PeriodicalIF":5.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652388","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":"Self-powered piezoelectric ultraviolet photodetectors based on TiO2-NFs:P(VDF-TrFE) nanocomposites via ultraviolet-assisted thermal annealing for the prevention of ultraviolet overexposure","authors":"Jer-Chyi Wang ,&nbsp;Tzu-Chuan Yang ,&nbsp;Tzu-Wei Hsu ,&nbsp;Ping-Jung Huang ,&nbsp;Peng-Nang Chen ,&nbsp;Chen-Yang Tseng ,&nbsp;Ting-Han Lin ,&nbsp;Jia-Mao Chang ,&nbsp;Chang-Heng Liu ,&nbsp;Wen-Ling Yeh ,&nbsp;Ming-Chung Wu","doi":"10.1016/j.jtice.2024.105808","DOIUrl":"10.1016/j.jtice.2024.105808","url":null,"abstract":"<div><h3>Background</h3><div>Ultraviolet (UV) radiation overexposure due to severe ozone layer depletion increases the risk of skin cancer. However, the traditional UV index meter needs the power supply which is not convenient for outdoor use. The study aims to develop a UV overexposure warning system with a self-powered piezoelectric UV photodetector to provide a real-time UV index.</div></div><div><h3>Method</h3><div>A self-powered piezoelectric UV photodetector with TiO₂-nanofibers (TiO₂-NFs)-doped poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) nanocomposite films via ultraviolet-assisted thermal annealing was fabricated. A lumped circuit was designed to realize the stepping illumination of light-emitting diodes (LEDs) under continuous tapping of self-powered piezoelectric UV photodetectors.</div></div><div><h3>Significant Findings</h3><div>At a fixed 40-kPa pressure and 2-Hz frequency with varying UV irradiation power densities, the self-powered piezoelectric UV photodetectors exhibited outstanding UV detection capabilities, with a responsivity and detectivity for 0.14 mA/W and 4 × 10⁸ Jones, respectively. A UV overexposure warning system was established by connecting a self-powered piezoelectric UV photodetector with a lumped circuit to achieve the stepping illumination of LEDs under continuous tapping, giving warnings for those performing outdoor activities to avoid UV overexposure.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105808"},"PeriodicalIF":5.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652319","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":"Impact of low-grade iron ore on sintering reactions: Rapid heating experiments and thermodynamic modeling","authors":"Ping-Chieh Cheng ,&nbsp;Kai-Chun Chang ,&nbsp;Jia-Shyan Shiau ,&nbsp;Shih-Hsien Liu ,&nbsp;Ker-Chang Hsieh ,&nbsp;Shih-kang Lin","doi":"10.1016/j.jtice.2024.105817","DOIUrl":"10.1016/j.jtice.2024.105817","url":null,"abstract":"<div><h3>Background</h3><div>Sinter is a primary feedstock for blast furnace-based ironmaking. Recently, the proportion of low-grade iron ore, which contains a high amount of gangue (mainly SiO₂), has been increasing in the sintering process. Therefore, the impact of increased SiO2 content on the quality of sinter needs to be clarified.</div></div><div><h3>Methods</h3><div>In this study, we designed a rapid-heating furnace to simulate the actual thermal profile of the sintering process. The effects of basicity values, sintering temperature, and atmosphere, on the microstructure and phase formation of the Fe₂O₃-CaO-SiO₂ ternary mixtures during sintering reactions, are investigated using X-ray diffractometry and scanning electron microscopy. The experimental results are analyzed using CALPHAD-type computational thermodynamics.</div></div><div><h3>Significant findings</h3><div>We found that solid-state reactions dominate at the lower temperature of 1250 °C, while liquid-assisted sintering occurs at the higher temperature (1300 °C). As the SiO₂ content in the sinter increases, the content of the calcium-ferrite bonding phase decreases, while the content of Ca₂SiO₄ and Fe₂O₃ increases. Regarding the role of the atmosphere, more calcium ferrite bonding phases form under a lower oxygen partial pressure compared to an ambient atmosphere, which facilitates the densification of the Fe₂O₃-CaO-SiO₂ sinter. In addition, a guideline for sintering operation with low-grade iron ore is proposed.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105817"},"PeriodicalIF":5.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652320","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":"Efficient separation of methyl ethyl ketone and water azeotrope using hydrophobic amino acid ester ionic liquids","authors":"Jun Gao ,&nbsp;Zhaohua Cheng ,&nbsp;Lianzheng Zhang ,&nbsp;Dongmei Xu ,&nbsp;Yixin Ma ,&nbsp;Yinglong Wang","doi":"10.1016/j.jtice.2024.105822","DOIUrl":"10.1016/j.jtice.2024.105822","url":null,"abstract":"<div><h3>Background</h3><div>Methyl ethyl ketone (MEK), an essential organic solvent, is commonly produced via the n-butene method, where water emerges as the principal impurity. The conventional distillation processes, which are necessitated by the azeotropic behavior between MEK and water, result in a substantial expenditure of energy. As a result, liquid-liquid extraction represents a promising alternative for energy-efficient separation.</div></div><div><h3>Methods</h3><div>In this work, three hydrophobic amino acid ester ionic liquids L-phenylalanine ethyl ester bis(trifluoromethylsulfonyl) imide ([Phe][NTf₂]), L-leucine ethyl ester bis(trifluoromethylsulfonyl) imide ([Leu][NTf₂]) and L-valine ethyl ester bis(trifluoromethylsulfonyl) imide ([Val][NTf₂]) were utilized as extractants for separation of the binary azeotrope methyl ethyl ketone and water. The effects of extraction time, extraction temperature, mass ratio of MEK-water mixture to ionic liquid and initial concentration of MEK on extraction efficiency were investigated.</div></div><div><h3>Significant findings</h3><div>The results demonstrate that the ionic liquid [Phe][NTf₂] exhibits superior extraction ability for the separation of the azeotrope methyl ethyl ketone and water. The maximum extraction yield of 99.86 % was achieved with the optimum extraction conditions of extraction time, 10 min, extraction temperature, 293.15 K, mass ratio of mixture to ionic liquid, 1:1 and initial concentration of MEK, 20 %. In addition, the relationship between the structure of ionic liquids and their extraction performance was revealed by quantum chemical calculations of ionic liquids with MEK and water. These ionic liquids were positioned as promising environmentally friendly alternatives to traditional organic solvents for the recovery of MEK from aqueous solutions, providing valuable insights for industrial applications.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105822"},"PeriodicalIF":5.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652434","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":"Enhanced photocatalytic activity of BB41 and ROM2R dyes using green synthesized NiO nanoparticles: A response surface methodology approach","authors":"M. Sivagami ,&nbsp;D. Thirumalai ,&nbsp;P.V. Satya Narayana ,&nbsp;A. Murugeeswari ,&nbsp;I.V. Asharani","doi":"10.1016/j.jtice.2024.105816","DOIUrl":"10.1016/j.jtice.2024.105816","url":null,"abstract":"<div><h3>Background</h3><div>NiO NPs are recognized for their potential in catalysis, energy storage, and environmental remediation. Green synthesis using plant extracts, such as <em>Cucumis maderaspatanus</em> L. (<em>Cm</em>L.) leaves, offers an eco-friendly approach. This study focuses on synthesizing and analyzing the structural, optical, and photocatalytic properties of <em>Cm</em>-NiO NPs.</div></div><div><h3>Methodology</h3><div><em>Cm</em>-NiO NPs were synthesized using <em>Cm</em>L. leaf extract and calcinated at 300, 500, and 700 °C. XRD confirmed a face-centered cubic structure. Band gap values were 3.36 eV at 300 °C, 2.98 eV at 500 °C, and 3.15 eV at 700 °C. TEM showed spherical particles of 17.81 nm. The point of zero charge (pH_pzc) was pH 7.95. The photocatalytic activity was tested on BB41 and ROM2R dyes under varying pH (4 – 10), dye concentrations (10 – 50 ppm), catalyst amounts (0.1 – 1.0 mg/mL), and light sources. Scavenger studies identified reactive compounds. Response surface methodology (RSM) optimized the degradation process. LC-MS analyzed degradation products, and ECOSAR software estimated their toxicity.</div></div><div><h3>Significant Findings</h3><div><em>Cm</em>-NiO NPs showed high photocatalytic efficiency, degrading 93.60 % of BB41 and 88.76 % of ROM2R under UV light (250 W, 365 nm). The nanoparticles demonstrated a face-centered cubic structure and a pH_pzc of 7.95. RSM effectively optimized the process, and toxicity analysis suggested a potential for environmental applications.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105816"},"PeriodicalIF":5.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652324","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":"Multilayer-coating process for the synthesis of nickel-silicate composite with high Ni loading as high-rate performance lithium-ion anode material","authors":"Chun-Han Hsu ,&nbsp;Chao-En Liu ,&nbsp;Yi-Hung Liu ,&nbsp;Wei-Cheng Chen ,&nbsp;Yi-Chieh Chang ,&nbsp;Hong-Ping Lin","doi":"10.1016/j.jtice.2024.105814","DOIUrl":"10.1016/j.jtice.2024.105814","url":null,"abstract":"<div><h3>Background</h3><div>Metal silicates possess several important advantages as electrode materials for lithium-ion batteries (LIBs), including straightforward synthesis, low cost, and high thermal stability. A green synthesis routes that are capable of increasing metal loading and reducing the impact on the environment are required.</div></div><div><h3>Methods</h3><div>A Ni-silicate with a multilayer structure and a Ni/Si molar ratio of 0.25 is first prepared using the co-precipitation method. The as-synthesized product is then repeatedly immersed in a Ni²⁺ solution to obtain Ni-silicate with the desired Ni contents (Ni/Si molar ratio: 0.50–2.00). Finally, the resulting Ni-silicate is reconstructed by hydrothermal treatment under various temperatures (70 °C, 100 °C, 150 °C) and durations (3 h and 24 h) to obtain Ni-phyllosilicate. The effects of the hydrothermal treatment temperature, hydrothermal time, and Ni/Si ratio on the structure, morphology, and surface area of the Ni-silicate composites are examined.</div></div><div><h3>Significant Findings</h3><div>The Ni-silicate with a Ni/Si ratio of 1.5 has a reversible capacity of 729 mAhg^-1, which exceeds traditional graphite anodes (372 mAhg^-1). Furthermore, the material exhibits a capacity retention of up to 80 % as the current density is increased from 0.025 Ag^-1 to 0.5 Ag^-1. Thus, the synthesized Ni-silicate composite is a promising candidate material for LIB anode.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105814"},"PeriodicalIF":5.5,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572556","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":"High-performance biochar derived from the leaves of Quercus dentata thunb for triclosan removal","authors":"Chen Chen ,&nbsp;Qingzhu Zhang ,&nbsp;Guixian Li ,&nbsp;Song Lin ,&nbsp;Xiaoqiu Liu ,&nbsp;Ning Liang","doi":"10.1016/j.jtice.2024.105812","DOIUrl":"10.1016/j.jtice.2024.105812","url":null,"abstract":"<div><h3>Background</h3><div>Triclosan (TCS) is a common antimicrobial additive. Despite its low concentration, its frequent use and widespread application result in significant amounts of TCS entering the environment. In the environment, TCS undergoes photodegradation, producing harmful byproducts such as dioxin-like substances and chloroform, which are highly toxic. Due to TCS's lipophilic nature, it easily accumulates in animal tissues, ultimately posing a threat to human health. Therefore, there is an urgent need for a powerful and efficient method to remove TCS from water bodies.</div></div><div><h3>Methods</h3><div>Using discarded traditional Chinese medicine as raw material and KOH as an activator, biochar was prepared. The material was characterized, and its adsorption capacity for TCS under various conditions was evaluated.</div></div><div><h3>Significant Findings</h3><div>Compared to the existing biochar materials' TCS adsorption capacity (13.9 mg/g-395.2 mg g^-1), the KOH-modified biochar (KMBC) in this study demonstrated an exceptional adsorption capacity of 639.13 mg g^-1 for TCS. KMBC can swiftly remove 98 % of TCS from water within 30 min, even with a minimal biochar concentration of 0.225 g/L, and it exhibits strong anti-interference capabilities. Most importantly, water treated with KMBC is virtually free of TCS, effectively mitigating its impact on environmental organisms.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105812"},"PeriodicalIF":5.5,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572555","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":"Efficient photocatalytic degradation of methylene blue via synergistic dual co-catalyst on SrTiO3@Al under visible light: Experimental and DFT study","authors":"Zhengisbek Kuspanov ,&nbsp;Aigerim Serik ,&nbsp;Nikita Matsko ,&nbsp;Madina Bissenova ,&nbsp;Aidos Issadykov ,&nbsp;Mukhtar Yeleuov ,&nbsp;Chingis Daulbayev","doi":"10.1016/j.jtice.2024.105806","DOIUrl":"10.1016/j.jtice.2024.105806","url":null,"abstract":"<div><h3>Background</h3><div>Photocatalytic oxidation is a green method for water purification. However, the operation of traditional photocatalysts depends on exposure to UV radiation, which only forms a small portion of the spectrum comprising sunlight. The expansion of photocatalyst absorption to the visible range of light could greatly improve the efficiency and economic viability of the process.</div></div><div><h3>Methods</h3><div>The photocatalyst was prepared by first synthesising SrTiO₃ nanoparticles by chemical precipitation followed by calcination. Then, SrTiO₃ was doped with aluminium using a flux method with Al₂O₃ and SrCl₂ at 1150 °C. Finally, the dual co-catalysts, Rh/Cr₂O₃ and CoOOH, were photodeposited onto SrTiO₃@Al via sequential irradiation.</div></div><div><h3>Significant findings</h3><div>The Rh/Cr₂O₃/SrTiO₃@Al/CoOOH nanocomposite degraded 87% of methylene blue (MB) (10 mg/L) under visible light in 1 h, a 3.3-fold improvement over pure SrTiO3 and 2.1-fold over a similar commercial composite. This enhancement is due to efficient charge separation resulting from Al doping and improved carrier transport as a result of the anisotropic deposition of the co-catalysts. Optimisation showed that 20 mg of photocatalyst in 50 mL of MB solution (5 mg/L) degraded 100% thereof within 45 min. DFT calculations showed uneven electron distribution in SrTiO3′s conduction band and structural changes with Al doping, further enhancing photocatalytic activity.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105806"},"PeriodicalIF":5.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554827","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":"Catalytic co-pyrolysis of oil palm empty fruit bunches (EFB) and surgical face mask (SFM) wastes: Thermo-kinetic study, ANN model fitting, and synergistic effect","authors":"Melvin Xin Jie Wee ,&nbsp;Bridgid Lai Fui Chin ,&nbsp;Agus Saptoro ,&nbsp;Jiuan Jing Chew ,&nbsp;Jaka Sunarso ,&nbsp;Suzana Yusup ,&nbsp;Abhishek Sharma","doi":"10.1016/j.jtice.2024.105811","DOIUrl":"10.1016/j.jtice.2024.105811","url":null,"abstract":"<div><h3>Background</h3><div>Catalytic co-pyrolysis process is an emerging thermochemical pathway to convert multiple wastes, such as biomass and municipal solid wastes into value added fuels. The ecology would suffer from mishandling of these materials, leading to landfills and microplastic contamination. However, the co-pyrolysis of the surgical face mask (SFM) wastes with biomass remains a niche research area.</div></div><div><h3>Methods</h3><div>The co-pyrolysis performance, kinetics and thermodynamics of oil palm empty fruit bunches (EFB) and SFM mixture were evaluated via thermogravimetric analysis (TGA) approach at heating rates from 10 to 100 °C.min⁻¹ with weight ratio of 1:1, 4:1 and 1:4. Additionally, the development of the artificial neural network (ANN) model to represent the thermal degradation behaviour of the overall catalytic co-pyrolysis process for EFB and SFM mixtures.</div></div><div><h3>Significant findings</h3><div>The highest average pyrolysis performance index, <em>I_r</em> value of 8.11 was found in the reaction at 50 °C.min⁻¹. The weight change, <em>ΔW_TGA</em> showed the thermal degradation behaviour of EFB and SFM co-pyrolysis exhibited predominantly inhibitory characteristics, as the experimental values were higher than the theoretical values. Moreover, the HZSM-5 catalyst showed great affinity towards the sample matrix, achieving high reduction of activation energy and difference in enthalpy of 13.54 % and 14.94 %, respectively.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105811"},"PeriodicalIF":5.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554828","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":"Lattice Boltzmann simulation of magnetohydrodynamic double-diffusive convection hybrid nanofluid flow through solid blocks in a porous H-shaped enclosure","authors":"Souhail Souai ,&nbsp;Md. Mamun Molla ,&nbsp;Sabrine Garrouri ,&nbsp;Soraya Trabelsi ,&nbsp;Ezeddine Sediki","doi":"10.1016/j.jtice.2024.105807","DOIUrl":"10.1016/j.jtice.2024.105807","url":null,"abstract":"<div><h3>Background</h3><div>Efficient heat transfer is vital in cooling systems to prevent overheating and maintain optimal performance. This study explores an H-shaped enclosure design incorporating conducting solid blocks and hybrid nanofluids (HNFs) based on a water-ethylene glycol (60:40) mixture. This coolant composition improves thermal stability by lowering the freezing point and raising the boiling point. The research focuses on magnetohydrodynamic double-diffusive natural convection (MHD-DDNC), analyzing the interactions between porous media, conducting blocks, and HNFs in the presence of a magnetic field.</div></div><div><h3>Methods</h3><div>Numerical analysis was performed using the non-orthogonal multi-relaxation time lattice Boltzmann method (NMRT-LBM). The D2Q9 scheme was applied for density and velocity, while D2Q5 was used for temperature and concentration fields. Key parameters such as Darcy number (Da), nanoparticle volume fraction (ϕ), buoyancy ratio (Br), Soret (<em>S_r</em>) and Dufour (<em>D_r</em>) numbers, thermal conductivity ratio (R_k), and mass transfer coefficient ratio (R_d) were analyzed to understand their impact on heat and mass transfer within the enclosure.</div></div><div><h3>Significant findings</h3><div>The results demonstrate that increasing ϕ and Br significantly enhances both heat and mass transfer rates, with improvements of up to 16.65% in the average Nusselt number (<span><math><mover><mrow><mi>N</mi><mi>u</mi></mrow><mo>‾</mo></mover></math></span>) and 12.45% in the average Sherwood number (<span><math><mover><mrow><mi>S</mi><mi>h</mi></mrow><mo>‾</mo></mover></math></span>). Increasing Da intensifies horizontal velocity and enhances nanofluid circulation, leading to a 12.91% improvement in <span><math><mover><mrow><mi>N</mi><mi>u</mi></mrow><mo>‾</mo></mover></math></span> and a 9.59% increase in <span><math><mover><mrow><mi>S</mi><mi>h</mi></mrow><mo>‾</mo></mover></math></span> at ϕ = 4%. The Soret number reduces <span><math><mover><mrow><mi>N</mi><mi>u</mi></mrow><mo>‾</mo></mover></math></span> by 1.01% but rises <span><math><mover><mrow><mi>S</mi><mi>h</mi></mrow><mo>‾</mo></mover></math></span> by 26.65%, while the Dufour number yields the opposite. Varying R_k from 0.1 to 10 at ϕ = 4% increases thermal performance by 33.53% and mass transfer by 9.61%. Increasing R_d from 0.1 to 10 improves <span><math><mover><mrow><mi>N</mi><mi>u</mi></mrow><mo>‾</mo></mover></math></span> by 8.07% and <span><math><mover><mrow><mi>S</mi><mi>h</mi></mrow><mo>‾</mo></mover></math></span> by 31.53%, demonstrating the strong influence of these parameters on heat and mass transfer performance. These results highlight the potential applications for optimizing automotive cooling systems, regenerative exchangers, and HVAC heat exchangers.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105807"},"PeriodicalIF":5.5,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538641","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}