Cleaner Engineering and Technology最新文献

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Utilization of floating photovoltaic systems in mine pit lakes and tailings ponds 浮动光伏系统在矿坑湖泊和尾矿库中的应用
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-05-31 DOI: 10.1016/j.clet.2025.101005
Elaheh Mohammadi Valikandi, Yosoon Choi
{"title":"Utilization of floating photovoltaic systems in mine pit lakes and tailings ponds","authors":"Elaheh Mohammadi Valikandi,&nbsp;Yosoon Choi","doi":"10.1016/j.clet.2025.101005","DOIUrl":"10.1016/j.clet.2025.101005","url":null,"abstract":"<div><div>Floating photovoltaic (FPV) systems are gaining traction as an innovative renewable energy solution, especially in areas where land is scarce or highly contested. Unlike traditional ground-mounted solar farms, FPVs take advantage of unused water surfaces, improving module efficiency through natural cooling while also reducing land-use conflicts and conserving water. In recent years, the mining industry has turned its attention to FPVs, exploring their potential on mine pit lakes and tailings ponds—sites that would otherwise remain unutilized. This review takes a closer look at the practicality, benefits, and challenges of deploying FPVs in mining environments. By analyzing real-world case studies, we highlight how these systems could support sustainable mining efforts, carbon reduction targets, and energy security, all while optimizing land and water resources. However, critical questions remain, particularly regarding long-term environmental impact, site-specific engineering challenges, and overall cost-effectiveness. Further research is essential to refine FPV technology for wider adoption in the mining sector.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"27 ","pages":"Article 101005"},"PeriodicalIF":5.3,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203542","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
Comparative evaluation of nanoparticle-enriched Gossypium hirsutum methyl ester blends for enhanced energy, emission, and economic performance in diesel engines 在柴油发动机中增强能源、排放和经济性能的纳米颗粒富棉甲酯混合物的比较评价
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-05-30 DOI: 10.1016/j.clet.2025.101004
Suresh Vellaiyan
{"title":"Comparative evaluation of nanoparticle-enriched Gossypium hirsutum methyl ester blends for enhanced energy, emission, and economic performance in diesel engines","authors":"Suresh Vellaiyan","doi":"10.1016/j.clet.2025.101004","DOIUrl":"10.1016/j.clet.2025.101004","url":null,"abstract":"<div><div>This study examines the comparative effectiveness of different nanoparticles, metal-based (CuO), carbon-based (CNTs), and their composites (CuO-CNTs), in enhancing the energy and environmental characteristics of a diesel engine propelled with <em>Gossypium hirsutum</em> methyl ester (GHME). A high GHME yield of 96 % was achieved under optimized transesterification conditions, and its physicochemical properties were comprehensively characterized. A 30 % volumetric blend of GHME with plain diesel fuel (PDF), denoted as PDF30GHME, was prepared and enriched with 100 ppm of CuO, CNTs, and CuO-CNT nanocomposites using ultrasonication. The energy, environmental, and economic characteristics of these test fuels was assessed using a standalone research diesel engine. Nanoparticle characterization revealed improved catalytic and thermal properties, enhancing the combustion process and thermal efficiency. The base fuel blend, PDF30GHME, exhibited a 3.9 % upsurge in brake-specific fuel consumption and a 6.6 % reduction in brake thermal efficiency related to plain diesel. Emission analyses showed reductions in hydrocarbon, carbon monoxide, and smoke opacity emissions by 4.6 %, 7.8 %, and 6.4 %, respectively, although nitrogen oxides (NOx) emissions increased by 2.7 %. Nanoparticle-enriched PDF30GHME significantly improved both performance and emission metrics. Carbon-based additives demonstrated superior enhancements in engine performance and emissions reduction, while metal-based additives were particularly effective in minimizing NOx emissions. Economic analysis revealed that CuO-enriched PDF30GHME achieved the highest cost reduction, lowering fuel costs by 5.42 %. The CuO-CNT composite emerged as the most promising additive, offering a balanced improvement in performance, emissions, and cost-effectiveness, positioning it as a viable candidate for sustainable and cleaner diesel engine operations.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"27 ","pages":"Article 101004"},"PeriodicalIF":5.3,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195704","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
Systemic model of segregation and transformation of urban solid waste 城市生活垃圾分类转化系统模型
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-05-30 DOI: 10.1016/j.clet.2025.101006
Alex Rengifo Rojas , Nelino Florida Rofner , Luis Morales y Chocano , José Raúl Rodríguez Lichtenheldt , Julio Pedro Atoche Cornejo
{"title":"Systemic model of segregation and transformation of urban solid waste","authors":"Alex Rengifo Rojas ,&nbsp;Nelino Florida Rofner ,&nbsp;Luis Morales y Chocano ,&nbsp;José Raúl Rodríguez Lichtenheldt ,&nbsp;Julio Pedro Atoche Cornejo","doi":"10.1016/j.clet.2025.101006","DOIUrl":"10.1016/j.clet.2025.101006","url":null,"abstract":"<div><div>In developing countries, the solid waste generated is rarely segregated, unused, and often lacks proper final disposal due to a lack of infrastructure, equipment, and personnel in municipalities. This study analyzes the composition of the waste generated in the city of Tingo María through modeling and simulation with system dynamics, seeking to optimize its transformation, recycling and final disposal. Simple and cluster random sampling methods were used to select 119 households and 229 non-domestic establishments, in addition to non-random sampling for 26 special establishments. The waste was classified and weighed into categories of organic, useable inorganic and non-useable, differentiating between domestic, non-domestic and special waste. In the modeling stage with system dynamics, @Risk 7.5 for Excel and Stella 9.0.2 were used, incorporating population and waste volume data. These values were adjusted to a probability distribution function and expressed in state, flow and auxiliary equations, to explain and predict their behavior. The results of the model indicate that the amount of population and its consumption culture are determining factors in calculating the generation of waste of each type. Organic waste has a greater growth trend than inorganic waste, which allows us to project the viability of producing compost, foliar fertilizer and biogas. Likewise, useable inorganics, also on the rise, could generate income through their sales, thus reducing the amount of waste destined for landfill. The modeling suggests the construction of new infrastructures for the transformation of organic solid waste and the development of sanitary landfills. In addition, for effective management of the system, it is essential to raise awareness and train the population in practices of segregation at source, recycling and reuse, thus optimizing the economic and environmental benefits of an adequate final disposal of the waste generated.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"27 ","pages":"Article 101006"},"PeriodicalIF":5.3,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144229672","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
Effect of Jiang-flavor Baijiu distiller's grain addition on humification during distillery sludge composting 江味白酒酒糟对酒池污泥堆肥腐殖质化的影响
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-05-29 DOI: 10.1016/j.clet.2025.101010
Min Yu , Xiaoming Liu , Ruixue Zhang , Xing Zhong , Guangli Zhang , Yuantao Wang , Zengping Ning , Mingfu Meng
{"title":"Effect of Jiang-flavor Baijiu distiller's grain addition on humification during distillery sludge composting","authors":"Min Yu ,&nbsp;Xiaoming Liu ,&nbsp;Ruixue Zhang ,&nbsp;Xing Zhong ,&nbsp;Guangli Zhang ,&nbsp;Yuantao Wang ,&nbsp;Zengping Ning ,&nbsp;Mingfu Meng","doi":"10.1016/j.clet.2025.101010","DOIUrl":"10.1016/j.clet.2025.101010","url":null,"abstract":"<div><div>Distillery sludge (DSS) composting often faces slow humification and low humification degrees. This study investigated the effects of adding Jiang-flavor Baijiu distillers' grains (JFSDG) on physical and chemical parameters, humus formation, and bacterial communities during DSS composting. The results revealed that the addition of 16 % JFSDG significantly shortened composting duration, reduced phytotoxicity, and increased the germination index by 18 % compared with the control group. JFSDG enhanced humic acid formation, leading to a 65 % increase in final humic acid content. High-throughput sequencing and network analysis revealed that JFSDG addition enriched the abundance of <em>Sphaerobacter</em> and <em>Bacillus</em>, which facilitated microbial interactions. Correlation analysis indicated that temperature, organic matter content, and <em>Bacillus were</em> significantly correlated with increased humus formation. JFSDG addition enhanced humus precursor formation and affected the core microbial community, thereby accelerating the composting process. These findings provide insights into the use of JFSDG to enhance DSS composting and present technical support for its co-disposal.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"27 ","pages":"Article 101010"},"PeriodicalIF":5.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203541","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
Contribution of protein hydrolysates and brain lipids to the integral valorization of blue shark (Prionace glauca) waste 蛋白质水解物和脑脂质对蓝鲨废物整体增值的贡献
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-05-29 DOI: 10.1016/j.clet.2025.101007
Jesus Valcarcel , José Antonio Pérez , Covadonga Rodríguez , Salvador Durán , Paula Souto-Montero , José Antonio Vázquez
{"title":"Contribution of protein hydrolysates and brain lipids to the integral valorization of blue shark (Prionace glauca) waste","authors":"Jesus Valcarcel ,&nbsp;José Antonio Pérez ,&nbsp;Covadonga Rodríguez ,&nbsp;Salvador Durán ,&nbsp;Paula Souto-Montero ,&nbsp;José Antonio Vázquez","doi":"10.1016/j.clet.2025.101007","DOIUrl":"10.1016/j.clet.2025.101007","url":null,"abstract":"<div><div>Processing of blue shark generates a variety of polluting residues, being heads the most prominent. Previous valorization efforts have extracted chondroitin sulfate, apatites, and hyaluronate from blue shark heads, but brain and muscle tissue remain after these processes. The present study aims at completing the integral valorization of blue shark heads by investigating the valorization of these remaining fractions to approach a zero-waste objective. In the first case, the dominant lipid classes extracted from the brain comparing three extraction protocols reveal a rich composition of ceramide-type sphingolipids, glycerophospholipids and neutral lipids, with potential for use in the cosmetic and pharmaceutical industries. Secondly, comparison of papain and alcalase for the enzymatic hydrolysis of the remaining muscle tissue along with water resulting from cooking heads, point to alcalase as the best option, achieving a high degree of hydrolysis at 1:1 solid to liquid ratio, 55 °C, pH 8.2, 0.1 % (w/v) of alcalase, and 3 h of hydrolysis. These hydrolysates, incorporated as peptones in the formulation of low-cost nutrient media, successfully support the growth of probiotic lactic acid bacteria and marine bacteria, demonstrating their suitability as a sustainable nitrogen source for biotechnological applications. These findings highlight the potential for significantly reducing waste and increasing the sustainability of the blue shark fishing industry by utilizing previously discarded fractions.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"27 ","pages":"Article 101007"},"PeriodicalIF":5.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203540","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
Tribochemistry of organic friction modifiers in lubrication of bio-hydrogenated diesel 有机摩擦改进剂在生物加氢柴油润滑中的摩擦化学研究
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-05-29 DOI: 10.1016/j.clet.2025.101008
Paweekan Hansungnoen , Ekarong Sukjit , Anawat Phatthanaphon , Atthaphon Maneedaeng
{"title":"Tribochemistry of organic friction modifiers in lubrication of bio-hydrogenated diesel","authors":"Paweekan Hansungnoen ,&nbsp;Ekarong Sukjit ,&nbsp;Anawat Phatthanaphon ,&nbsp;Atthaphon Maneedaeng","doi":"10.1016/j.clet.2025.101008","DOIUrl":"10.1016/j.clet.2025.101008","url":null,"abstract":"<div><div>Global energy security and environmental concerns have driven the advancement of renewable fuel technologies. Bio-hydrogenated diesel (BHD), produced via catalytic hydrogenation of biomass feedstocks, exhibits combustion characteristics comparable to those of petroleum-based diesel. However, the removal of oxygen-containing compounds during production significantly reduces its boundary lubricity, leading to increased friction and wear in fuel injection systems. This study systematically investigates the influence of molecular structure on the tribological performance of organic friction modifiers (OFMs) in BHD, with a focus on functional group effects and hydrocarbon chain configuration. Using high-frequency reciprocating rig (HFRR) testing in accordance with ISO 12156–1:2018, friction coefficients and wear scar diameters were measured for five distinct OFMs at concentrations ranging from 0.1 to 1.0 % by weight. A multi-technique surface analysis-including 3D laser microscopy, SEM-EDS, and FT-IR spectroscopy-was conducted to characterize lubrication film formation and tribochemical interactions. The findings reveal that carboxyl-functionalized OFMs, particularly stearic acid, achieved the highest tribological efficiency, reducing the friction coefficient by 57 % (from 0.296 to 0.126) and the wear scar diameter by 70 % (from 515 μm to 155 μm) compared to pure BHD. A clear hierarchical ranking of functional group effectiveness in reducing friction and wear was established: COOH &gt; –CONH<sub>2</sub> &gt; –OH &gt; –COOR, with polar head group chemistry playing a more dominant role than hydrocarbon tail configuration. Additionally, the study highlights the effect of molecular structure, demonstrating that saturated OFMs (stearic acid) outperformed unsaturated counterparts (oleic acid) due to their ability to form compact, cohesive boundary films, resulting in 13 % lower friction and 9 % smaller wear scars. These findings provide molecular-level design insights for optimizing OFMs in paraffinic biofuels, supporting the development of next-generation additives to enhance BHD lubricity and engine durability.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"27 ","pages":"Article 101008"},"PeriodicalIF":5.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195110","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
Modeling and optimizing the atmospheric water harvesting System: Application of PAN-PDMS polymeric membrane 大气集水系统的建模与优化:PAN-PDMS聚合物膜的应用
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-05-29 DOI: 10.1016/j.clet.2025.101003
Sepehr Sanaye , Pouya Rezvani Gil Kalaee , Javad Mahmoudimehr
{"title":"Modeling and optimizing the atmospheric water harvesting System: Application of PAN-PDMS polymeric membrane","authors":"Sepehr Sanaye ,&nbsp;Pouya Rezvani Gil Kalaee ,&nbsp;Javad Mahmoudimehr","doi":"10.1016/j.clet.2025.101003","DOIUrl":"10.1016/j.clet.2025.101003","url":null,"abstract":"<div><div>Potable water scarcity is an increasingly demanding global issue and the extraction of potable water from the humidity of ambient air can be a solution to this problem. In this research combination of membranes, vacuum pump and vapor compression refrigeration (VCR) system is proposed as a water harvesting system. Polymeric membranes Polydimethylsiloxane (PDMS) and polyacrylonitrile (PAN), helped to separate water vapor from air by increasing the partial pressure of water vapor on the permeate side due to the separation process. The water vapor permeability has been assumed constant even with change in the pressure difference on two sides of the membrane in many research studies. However, this research uses its own developed relations obtained based on experimental results for variable pressure difference on both sides of membranes. As this proposed membrane system provides the air with near saturated water vapor conditions, thus, VCR system requires lower cooling capacity and lower electricity consumption for the condensation process. This proposed water harvesting system is modeled in energy and economic aspects for the first time and is optimized in this research by applying multi-objective Genetic Algorithm (GA) technique. The water production rate and the total annual cost rate were considered as two objective functions. Also, five design variables are selected after considering their effects on the objective functions. The optimization procedure performed for four different climate zones of Iran. Optimization results for the second zone showed 3.56 L per hour water production rate with about 29 % lower energy consumption in comparison with that for typical condensation process of water vapor in the same atmospheric air. The improved values for water vapor removal efficiency, water production cost, and the energy consumption were 63.6 %, 0.31 $ per liter, and 1714 <span><math><mrow><mtext>kJ</mtext></mrow></math></span> per liter respectively.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"27 ","pages":"Article 101003"},"PeriodicalIF":5.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170719","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
Evaluating the impact of CO2 capture and storage on total efficiency: A lifecycle analysis 评估二氧化碳捕获和储存对总效率的影响:生命周期分析
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-05-23 DOI: 10.1016/j.clet.2025.101002
Enrique García-Tenorio Corcuera , Fontina Petrakopoulou
{"title":"Evaluating the impact of CO2 capture and storage on total efficiency: A lifecycle analysis","authors":"Enrique García-Tenorio Corcuera ,&nbsp;Fontina Petrakopoulou","doi":"10.1016/j.clet.2025.101002","DOIUrl":"10.1016/j.clet.2025.101002","url":null,"abstract":"<div><div>This paper evaluates the impact of carbon capture and storage (CCS) on the total efficiency of natural gas and coal-fired power plants in various countries, with a focus on energy penalties. Unlike previous studies, which primarily examine efficiency losses within the conversion process, this work extends the analysis across the entire fuel lifecycle, providing a more comprehensive assessment. Total efficiency is calculated by accounting for energy consumption across all stages: fuel preparation (extraction, processing, transportation), power generation, and CCS operations. The findings reveal that CCS significantly reduces total efficiency, with thermodynamic efficiency losses exceeding 50 % in both natural gas and coal plants. Sensitivity analyses identify CO<sub>2</sub> capture and transportation as the most energy-intensive stages, critically influencing overall efficiency losses. While natural gas plants suffer greater penalties due to high fuel preparation demands, coal plants are more impacted by CCS-related energy consumption. The study underscores the need for optimized fuel logistics, advanced CO<sub>2</sub> capture technologies, and efficient transportation strategies to mitigate these penalties and enhance the feasibility of CCS as a decarbonization pathway.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"27 ","pages":"Article 101002"},"PeriodicalIF":5.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270510","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
Multi-perspective analysis of a parabolic trough collector with a gradient porous structure and hybrid nanofluid: Thermal, thermodynamic, and exergoeconomic evaluation 具有梯度多孔结构和混合纳米流体的抛物槽收集器的多视角分析:热学、热力学和燃烧经济评价
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-05-21 DOI: 10.1016/j.clet.2025.101001
Iman Shahdad, Mahdi Moghimi, Mahdi Navidbakhsh
{"title":"Multi-perspective analysis of a parabolic trough collector with a gradient porous structure and hybrid nanofluid: Thermal, thermodynamic, and exergoeconomic evaluation","authors":"Iman Shahdad,&nbsp;Mahdi Moghimi,&nbsp;Mahdi Navidbakhsh","doi":"10.1016/j.clet.2025.101001","DOIUrl":"10.1016/j.clet.2025.101001","url":null,"abstract":"<div><div>Research highlights that porous media significantly enhance parabolic trough collector performance by increasing surface area and minimizing thermal losses, thereby improving energy capture. Adding nanoparticles to the heat transfer fluid can further boost this improvement by increasing the heat transfer coefficient. The present study examined a porous ring with non-uniform porosity inside the receiver, which decreases radially toward the absorber tube's inner wall. A hybrid nanofluid was created by adding Al<sub>2</sub>O<sub>3</sub> and MWCNT nanoparticles to Therminol-VP1 oil. The main objective was to investigate the influence of the novel receiver with and without the hybrid nanofluid. Additionally, an exergoeconomic analysis was conducted to assess the cost-effectiveness of incorporating the porous ring and hybrid nanofluid. Computational fluid dynamics simulations using OpenFOAM software analyzed the effects of various Reynolds numbers (<span><math><mrow><msup><mn>10</mn><mn>4</mn></msup><mo>,</mo><mn>5</mn><mo>×</mo><msup><mn>10</mn><mn>4</mn></msup><mo>,</mo><mn>20</mn><mo>×</mo><msup><mn>10</mn><mn>4</mn></msup></mrow></math></span>, and <span><math><mrow><mn>50</mn><mo>×</mo><msup><mn>10</mn><mn>4</mn></msup></mrow></math></span>), inlet temperatures (400 K and 500 K), porous ring thicknesses (0.008 m, 0.016 m, and 0.024 m), and nanoparticle volume fractions (0 %, 2 %, and 4 %) on parabolic trough collector performance. Results indicated that the gradient porous ring increased the Nusselt number by more than threefold and enhanced thermal and exergy efficiencies up to 17.3 % and 18.5 %, respectively. Adding nanoparticles optimized the Nusselt number at high Reynolds numbers but only modestly improved thermal and exergy efficiencies by 1.7 % and 2.3 %. Exergoeconomic analysis revealed that the porous ring increased net profit up to 30.3 % and reduced the total cost per unit of heat load by 7.39 %, whereas the addition of nanoparticles decreased net profit by 25.5 % and increased costs by 9.2 %.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"27 ","pages":"Article 101001"},"PeriodicalIF":5.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134526","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
Ultra-small defect-engineered UiO-66 on cellulose nanocrystal template for advanced carbon dioxide capture membrane 基于纤维素纳米晶模板的超小型缺陷工程UiO-66用于先进的二氧化碳捕获膜
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-05-19 DOI: 10.1016/j.clet.2025.100999
Xinyu Wang , Seyed Fatemeh Seyedpour , Sabahudin Hrapovic , Usha D. Hemraz , Mohammad Mozafari , Masoud Soroush , Muhammad Amirul Islam , Arash Mollahosseini , Mohtada Sadrzadeh , Jae-Young Cho
{"title":"Ultra-small defect-engineered UiO-66 on cellulose nanocrystal template for advanced carbon dioxide capture membrane","authors":"Xinyu Wang ,&nbsp;Seyed Fatemeh Seyedpour ,&nbsp;Sabahudin Hrapovic ,&nbsp;Usha D. Hemraz ,&nbsp;Mohammad Mozafari ,&nbsp;Masoud Soroush ,&nbsp;Muhammad Amirul Islam ,&nbsp;Arash Mollahosseini ,&nbsp;Mohtada Sadrzadeh ,&nbsp;Jae-Young Cho","doi":"10.1016/j.clet.2025.100999","DOIUrl":"10.1016/j.clet.2025.100999","url":null,"abstract":"<div><div>Global warming and associated climate change, primarily driven by greenhouse gas emissions, are no longer a forecast but are now undeniable realities. Although membrane technology presents a highly cost-effective approach for carbon dioxide (CO<sub>2</sub>) capture, further research is required to overcome the inherent trade-off between selectivity and permeability to achieve enhanced performance. A novel defect-engineered ultrasmall cellulose nanocrystal (CNC)-templated UiO-66 MOF (CNC-UiO-66 hybrid) was synthesized to improve the performance of Pebax membranes. The elongated geometry of the CNC-UiO-66 hybrid creates extended facilitated transport channels for CO<sub>2</sub>, while the highly defective structure, induced by the presence of CNC during synthesis, enhances coordination interactions with both CO<sub>2</sub> and the polymer matrix. As a result, Pebax incorporated with CNC-UiO-66 demonstrated increased crystallinity and thermal stability. The incorporation of as little as 1 wt% of the CNC-UiO-66 hybrid into Pebax membranes achieved a remarkable CO<sub>2</sub> permeability of 1442 Barrer and a selectivity of 40, surpassing the Robeson upper bound (2008) for CO<sub>2</sub>/N<sub>2</sub> separation. Cost analysis suggested that this membrane could reduce carbon capture costs to 62 USD per tonne, 10 USD less than conventional membranes. These results highlight the potential of CNC-UiO-66 hybrid membranes for efficient and cost-effective CCUS applications, particularly in flue gas treatment.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"27 ","pages":"Article 100999"},"PeriodicalIF":5.3,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090607","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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