Cleaner Engineering and Technology最新文献

筛选
英文 中文
Enhancement of combustion performance and emission control in Bauhinia malabarica biodiesel-diesel blends using aluminium oxide nanoparticles and electrostatic precipitators 利用氧化铝纳米粒子和静电除尘器提高马来紫荆生物柴油-柴油混合物的燃烧性能和排放控制
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-04-24 DOI: 10.1016/j.clet.2025.100981
Suresh Vellaiyan
{"title":"Enhancement of combustion performance and emission control in Bauhinia malabarica biodiesel-diesel blends using aluminium oxide nanoparticles and electrostatic precipitators","authors":"Suresh Vellaiyan","doi":"10.1016/j.clet.2025.100981","DOIUrl":"10.1016/j.clet.2025.100981","url":null,"abstract":"<div><div>This study investigates the enrichment of combustion performance and emission features of <em>Bauhinia malabarica</em> biodiesel (BMB)-diesel mixtures through the addition of aluminium oxide (Al<sub>2</sub>O<sub>3</sub>) nanoparticles and the use of electrostatic precipitators (ESPs) to mitigate nanoparticle emissions. Different volume concentrations of BMB were combined with conventional diesel fuel (CDF), and 100 ppm of Al<sub>2</sub>O<sub>3</sub> was dispersed into 30 % BMB-CDF blends using ultrasonication with a surfactant. The combustion analysis exposed that the addition of BMB to CDF reduced in-cylinder pressure while increasing net heat release and advancing the crank angle for peak values. The 30 % BMB blend led to a drop in brake thermal efficiency (BTE), with a corresponding upsurge in brake-specific fuel consumption (BSFC) and nitrogen oxides (NOx) emissions of 10.4 %, 11.3 %, and 10.9 %, respectively. However, formations of hydrocarbons (HC), carbon monoxide (CO), smoke, and particulate matter (PM) decreased by 14.3 %, 6.3 %, 11.1 %, and 12.5 %, respectively. The incorporation of Al<sub>2</sub>O<sub>3</sub> nanoparticles improved BTE by 5.2 % and reduced BSFC, HC, CO, NOx, and smoke by 4.2 %, 13.7 %, 14.9 %, 5.8 %, and 15.5 %, respectively. Although PM emissions increased by 47.2 % with the nanoparticle-enriched blend, integration of the ESP effectively captured exhaust nanoparticles, reducing PM emissions by 54.2 %. This study reveals the potential of Al<sub>2</sub>O<sub>3</sub> nanoparticle-enriched BMB mixtures in enlightening combustion performance and dropping most emissions, with ESP serving as an effective tool for controlling nanoparticle emissions.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"26 ","pages":"Article 100981"},"PeriodicalIF":5.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876754","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
Luffa Cylindrica: Sustainable industrial innovations 丝瓜:可持续的产业创新
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-04-24 DOI: 10.1016/j.clet.2025.100978
Angisenit Reyes-Prezas , Marieli Lavoignet-Ruiz , Gregorio Fernández-Lambert , Luis Enrique García-Santamaría , Eduardo Fernández-Echeverría , Juan Manuel Carrión-Delgado , Yair Romero-Romero
{"title":"Luffa Cylindrica: Sustainable industrial innovations","authors":"Angisenit Reyes-Prezas ,&nbsp;Marieli Lavoignet-Ruiz ,&nbsp;Gregorio Fernández-Lambert ,&nbsp;Luis Enrique García-Santamaría ,&nbsp;Eduardo Fernández-Echeverría ,&nbsp;Juan Manuel Carrión-Delgado ,&nbsp;Yair Romero-Romero","doi":"10.1016/j.clet.2025.100978","DOIUrl":"10.1016/j.clet.2025.100978","url":null,"abstract":"<div><div>In a global context marked by the rising demand for sustainable and biodegradable materials, natural fibres have gained unprecedented significance in scientific and technological research. Known for their low environmental impact and versatility, natural fibres offer innovative solutions to replace non-renewable synthetic materials. This study explores the trends from 2010 to 2023, focusing on the use of <em>Luffa cylindrica</em>, an alternative crop particularly relevant for emerging economies and rural communities. A total of 589 articles and 632 patents were analyzed using a bibliometric and patent review approach to identify industrial advancements related to this plant.</div><div>The findings reveal a 35 % increase in publications and a 40 % increase in patents related to sectors such as construction, pharmaceutical, biotechnology, and agriculture between 2010 and 2023, reflecting a significant growth in interest. Literature highlights its applications in lightweight construction materials, such as eco-friendly panels; acoustic insulation, including soundproofing in urban housing; and reinforced composites for automotive interior components, demonstrating its adaptability to diverse industries. Patent data underscores advancements in biotechnological applications, environmental engineering for water and air filtration, and agricultural innovations. Its potential for pollutant remediation, with absorption efficiencies reaching up to 90 % for heavy metals, and sustainable packaging solutions that could reduce reliance on synthetic plastics by an estimated 25 % in specific markets, positions this plant as a key renewable resource for promoting sustainability.</div><div>The evidence suggests that <em>Luffa cylindrica</em> has the potential not only to replace non-renewable materials but also to drive technological advancements in both emerging and established markets. This study emphasizes the importance of developing new applications while addressing these issues to support the transition to a circular economy and mitigate environmental impacts. The research contributes significantly to the development of cleaner, more sustainable industrial processes.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"27 ","pages":"Article 100978"},"PeriodicalIF":5.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083638","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
Critical success factors for ICT integration in agri-food sector: Pathways for decarbonization and sustainability 信息通信技术在农业食品部门整合的关键成功因素:脱碳和可持续性的途径
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-04-23 DOI: 10.1016/j.clet.2025.100982
Isha Sharma , Bishal Dey Sarkar , Sandeep Jagtap
{"title":"Critical success factors for ICT integration in agri-food sector: Pathways for decarbonization and sustainability","authors":"Isha Sharma ,&nbsp;Bishal Dey Sarkar ,&nbsp;Sandeep Jagtap","doi":"10.1016/j.clet.2025.100982","DOIUrl":"10.1016/j.clet.2025.100982","url":null,"abstract":"<div><div>A decarbonized agri-food sector may provide consumers with nutritious, secure, and reasonably priced food with a lower carbon impact. Decarbonizing the agri-food sector is intricate and necessitates a holistic strategy. Technological advancements, like Information and Communication Technologies (ICT), might be the solution. This study analyses the critical success factors (CSFs) for ICT integration in the agri-food sector in the Western and North Western States of India based on empirical data collected and analyzed. The study proposes a framework that determines and ranks the significant factors for ICT integration in the agri-food sector to achieve the decarbonization goals by utilizing the fuzzy evidential reasoning approach (FERA) and the evidential reasoning approach (EFA). The factors are examined based on the Technological, Organization, and Environmental (TOE) criteria. The results show that the most significant factors contributing to the effective implementation of ICT in the agri-food sector are continuous innovation and R&amp;D, supportive policies and regulations, and cost-effectiveness. The results will assist managers and decision-makers in creating effective policies and making knowledgeable choices that will support sustainable growth in the agri-food industry by lowering carbon emissions through effective ICT integration.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"26 ","pages":"Article 100982"},"PeriodicalIF":5.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869428","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
Performance of functionalized CNT membranes for desalination - Parametric effects and Artificial neural network modelling 用于海水淡化的功能化碳纳米管膜的性能-参数效应和人工神经网络建模
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-04-22 DOI: 10.1016/j.clet.2025.100977
Deepa Durairaj , Santhosh Paramasivam , Natarajan Rajamohan , Manivasagan Rajasimman , Ragothaman M. Yennamalli , Roberto Baccoli , Gianluca Gatto
{"title":"Performance of functionalized CNT membranes for desalination - Parametric effects and Artificial neural network modelling","authors":"Deepa Durairaj ,&nbsp;Santhosh Paramasivam ,&nbsp;Natarajan Rajamohan ,&nbsp;Manivasagan Rajasimman ,&nbsp;Ragothaman M. Yennamalli ,&nbsp;Roberto Baccoli ,&nbsp;Gianluca Gatto","doi":"10.1016/j.clet.2025.100977","DOIUrl":"10.1016/j.clet.2025.100977","url":null,"abstract":"<div><div>Desalination, decisive for mitigating global water scarcity, faces challenges due to the high energy consumption and operational costs associated with traditional methods like reverse osmosis and distillation. The present research investigated the efficiency of eight combinations of fabricated single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) composite membranes with -OH, -COOH, and -NH<sub>2</sub> functionalities for the removal of salt under varying flow rates (100, 150, 200, and 250 ml/h) and influent (2500, 3000, 4000, 5000 mg/l) rates by membrane filtration. Isothermal analysis was conducted to evaluate the membranes' performance in removing dissolved sodium chloride in de-ionized water. Efficient salt removal was observed with amino-functionalized SWCNTs (84 % salt rejection with 2500 mg/l feed) compared to other functionalized MWCNTs at a flow rate of 200 ml/h. Among the two isotherms, Langmuir isotherm fitted the experimental data better than the Freundlich equation. An Artificial Neural Network (ANN) model was used to predict the behaviour of the membranes under different conditions. The model's predictions closely aligned with the observed experimental outcomes, affirming its reliability and utility in optimizing membrane performance. While amino-functionalized SWCNTs outperformed MWCNTs in desalination applications, potential challenges related to scalability and long-term stability were identified. Future work will explore these aspects to enhance practical applicability and cost-efficiency in large-scale operations.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"26 ","pages":"Article 100977"},"PeriodicalIF":5.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876753","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
Development of environmentally sustainable geopolymer-based soil solidifiers using waste siding and glass powders 利用废壁板和玻璃粉开发环境可持续的地聚合物基土壤固化剂
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-04-21 DOI: 10.1016/j.clet.2025.100976
Shinya Inazumi , Ryo Hashimoto , Yoji Hontani , Atsuya Yoshimoto , Ken-ichi Shishido , Kuo Chieh Chao
{"title":"Development of environmentally sustainable geopolymer-based soil solidifiers using waste siding and glass powders","authors":"Shinya Inazumi ,&nbsp;Ryo Hashimoto ,&nbsp;Yoji Hontani ,&nbsp;Atsuya Yoshimoto ,&nbsp;Ken-ichi Shishido ,&nbsp;Kuo Chieh Chao","doi":"10.1016/j.clet.2025.100976","DOIUrl":"10.1016/j.clet.2025.100976","url":null,"abstract":"<div><div>This study develops an environmentally sustainable soil solidifier by utilizing Siding Cut Powder (SCP), an industrial by-product, activated with Earth Silica (ES), an innovative alkaline stimulant derived from recycled waste glass. Laboratory tests were conducted on various formulations of SCP and ES, with and without additives such as Ordinary Portland Cement (OPC) and calcium hydroxide (Ca(OH)<sub>2</sub>). The results demonstrated that SCP activated with ES significantly enhanced the compressive strength of the soil, exceeding the 160 kN/m<sup>2</sup> threshold required for construction-grade soil. The addition of OPC and Ca(OH)<sub>2</sub> further improved performance, while thermal treatment of SCP at 110 °C and 200 °C reduced the required amount of solidifier without compromising strength.</div><div>Environmental assessments initially identified concerns regarding arsenic (As) leaching in SCP formulations, partially attributed to the recycled glass content in ES. However, the incorporation of Ca(OH)<sub>2</sub> effectively mitigated As leaching by forming stable calcium arsenate compounds, ensuring compliance with environmental standards. SEM-EDS analysis revealed the formation of silicate and aluminosilicate compounds, with calcium silicate hydrate (C-S-H) contributing to improved mechanical stability and durability. These findings indicate that SCP and ES provide a viable, low-carbon alternative to OPC-based solidifiers, supporting sustainable construction practices. The implications of this study include potential reductions in construction waste and carbon emissions, as well as new opportunities for recycling industrial by-products in geotechnical applications.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"26 ","pages":"Article 100976"},"PeriodicalIF":5.3,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869426","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
Mineralisation as a carbon sink for DAC: A case-study for solar thermal process integration 矿化作为DAC的碳汇:太阳能热过程集成的案例研究
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-04-21 DOI: 10.1016/j.clet.2025.100974
Dia Milani , Haftom Weldekidan , Wilson Gardner , Phillip Fawell , Robbie McDonald , Paul Feron , Michael Rae , Geoff Drewer , Graeme Puxty , Nouman Mirza , Phil Green
{"title":"Mineralisation as a carbon sink for DAC: A case-study for solar thermal process integration","authors":"Dia Milani ,&nbsp;Haftom Weldekidan ,&nbsp;Wilson Gardner ,&nbsp;Phillip Fawell ,&nbsp;Robbie McDonald ,&nbsp;Paul Feron ,&nbsp;Michael Rae ,&nbsp;Geoff Drewer ,&nbsp;Graeme Puxty ,&nbsp;Nouman Mirza ,&nbsp;Phil Green","doi":"10.1016/j.clet.2025.100974","DOIUrl":"10.1016/j.clet.2025.100974","url":null,"abstract":"<div><div>The rising demand for critical minerals entails more greenhouse gas (GHG) emissions and increased generation of tailings and other mining wastes. This study proposes a novel process integrating concentrated solar power (CSP), accelerated mineral carbonation (AMC), and direct air capture (DAC) technologies to reduce such wastes and emissions. A closed-loop Rankine cycle generating 10 MW<sub>e</sub> electric power for a hypothetical Australian nickel mine site case-study is simulated in Aspen Plus. High temperature steam is first used in the AMC heat exchanger (AMC-HX) to provide the enthalpy for AMC before expanding in the turbine to produce the design electricity. The turbine's low-enthalpy exit steam is then used in the DAC heat exchanger (DAC-HX) as a final heat sink before condensation and pumping back to the boiler. The boiler's thermal duty is supplied by a solar central receiver system (CRS) complemented by a 10-h thermal energy storage system.</div><div>For the nominal CRS design and energy balance, a net of 5.78 MJ heat per kg of carbonated product is calculated, 10 MW<sub>e</sub> electricity for mining beneficiation is maintained, while 10.7 MJ per kg of CO<sub>2</sub> produced in DAC is also provisioned. An annual production of 175.7 kt of carbonates is predicted, permanently locking away 92.2 kt of atmospheric CO<sub>2</sub>, and reducing diesel consumption by almost 90 %. Such a design integration can bring all power-related CO<sub>2</sub> emissions of this case-study to zero, with a further CO<sub>2</sub> avoidance of 68.55 kt annually to offset non-power related emissions. In addition to verifying the technical and economic feasibility of such a design, a full life cycle assessment relative to business-as-usual is imperative to help in achieving the 2050 net-zero emissions target in the mining sector.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"26 ","pages":"Article 100974"},"PeriodicalIF":5.3,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869427","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
Development of a deep learning predictive model for estimating higher heating value in municipal solid waste management 城市固体废物管理中较高热值的深度学习预测模型的开发
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-04-18 DOI: 10.1016/j.clet.2025.100966
Nasreen Banu Mohamed Ishaque, S. Metilda Florence
{"title":"Development of a deep learning predictive model for estimating higher heating value in municipal solid waste management","authors":"Nasreen Banu Mohamed Ishaque,&nbsp;S. Metilda Florence","doi":"10.1016/j.clet.2025.100966","DOIUrl":"10.1016/j.clet.2025.100966","url":null,"abstract":"<div><div>The management of municipal solid waste (MSW) has become a pressing issue in urban areas due to population growth and increasing waste generation. Waste-to-energy (WTE) conversion through thermo-chemical processes offers a promising solution, where the Higher Heating Value (HHV) of MSW plays a crucial role in process optimization. Traditional calorimetric methods for HHV determination are labor-intensive, costly, and environmentally harmful, prompting the need for automated, efficient predictive models. In this work, a novel deep learning-based framework called DLHHV-MSW is presented it estimates the HHV of MSW from its elemental composition, such as the amount of ash, carbon, hydrogen, nitrogen, oxygen, sulfur, and water. The framework utilizes a Deep Belief Network (DBN) optimized with Oppositional Cat Swarm Optimization (OCSO) to improve predictive accuracy. Experimental results demonstrate that DLHHV-MSW achieves superior performance, with a correlation coefficient (CC) of 0.996 and a mean squared error (MSE) of 2.342, outperforming traditional methods. This automated approach offers a scalable, cost-effective, and environmentally friendly solution for enhancing WTE operations and advancing sustainable MSW management.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"26 ","pages":"Article 100966"},"PeriodicalIF":5.3,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878817","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
Greenhouse cooling systems: A systematic review of research trends, challenges, and recommendations for improving sustainability 温室冷却系统:对研究趋势、挑战和改进可持续性建议的系统回顾
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-04-16 DOI: 10.1016/j.clet.2025.100973
Fatima Ezzahra Allali , Hicham Fatnassi , Hassan Demrati , Reda Errais , Ahmed Wifaya , Ahmed Aharoune
{"title":"Greenhouse cooling systems: A systematic review of research trends, challenges, and recommendations for improving sustainability","authors":"Fatima Ezzahra Allali ,&nbsp;Hicham Fatnassi ,&nbsp;Hassan Demrati ,&nbsp;Reda Errais ,&nbsp;Ahmed Wifaya ,&nbsp;Ahmed Aharoune","doi":"10.1016/j.clet.2025.100973","DOIUrl":"10.1016/j.clet.2025.100973","url":null,"abstract":"<div><div>Sustainable Greenhouse Cooling Systems (SGCS) incorporate environmentally friendly technologies to maintain optimal plant growth conditions while reducing energy consumption and environmental impact. These technologies include natural ventilation, shading techniques, and evaporative cooling. By decreasing reliance on fossil fuels and enhancing resource efficiency, SGCS contribute to improved sustainability of greenhouse production. Despite numerous review studies on greenhouse cooling systems, there is a notable lack of comprehensive, actionable recommendations for incorporating renewable energy sources, improving energy efficiency, and minimizing water usage within SGCS. Additionally, there is a gap in assessing the holistic sustainability of these systems across environmental, energy, and water conservation dimensions. This review examines the intersection of SGCS research with the Food-Energy-Water (FEW) nexus by addressing key gaps through a systematic literature review of SGCS from 1973 to 2024, providing an in-depth overview of research trends, highlighting challenges and opportunities, and offering practical recommendations to enhance sustainability. A bibliometric analysis was performed using co-authorship, bibliographic coupling, citation, and co-occurrence metrics to objectively assess the literature. This analysis covered 473 documents to address key research questions, track publication trends, and identify evolving themes in SGCS. Results reveal a consistent upward trajectory in SGCS research, with a significant surge in publications post-2006, driven by increased global awareness of climate change and sustainable agriculture practices. Key research themes include the development of passive and active cooling technologies, innovations in material science for thermal management, integration of renewable energy systems, and the use of alternative water sources. Emerging trends also highlight the integration of artificial intelligence (AI) and the Internet of Things (IoT) for real-time climate control and optimization in greenhouses. This study offers a systematic roadmap for future research in SGCS, emphasizing key concepts and trends. It serves as a valuable resource for understanding the evolution of SGCS research and guiding future studies in this area.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"26 ","pages":"Article 100973"},"PeriodicalIF":5.3,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882023","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 environmental impacts of thorium extraction: A comparative study of solvent and electrosorption technologies using life cycle assessment (LCA) 钍萃取的环境影响评价:基于生命周期评价(LCA)的溶剂和电吸附技术的比较研究
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-04-16 DOI: 10.1016/j.clet.2025.100960
Naseem Akhtar , Aznan Fazli Ismail , Marlia Mohd Hanafiah , Syazwani Mohd Fadzil , Sulgiye Park
{"title":"Evaluating environmental impacts of thorium extraction: A comparative study of solvent and electrosorption technologies using life cycle assessment (LCA)","authors":"Naseem Akhtar ,&nbsp;Aznan Fazli Ismail ,&nbsp;Marlia Mohd Hanafiah ,&nbsp;Syazwani Mohd Fadzil ,&nbsp;Sulgiye Park","doi":"10.1016/j.clet.2025.100960","DOIUrl":"10.1016/j.clet.2025.100960","url":null,"abstract":"<div><div>Thorium extraction techniques, such as solvent extraction from monazite and electrosorption techniques from water leach purification (WLP) of radioactive waste residues, are important for thorium recovery, particularly in Malaysia. Despite their importance, previous studies have largely overlooked critical issues like radioactive hazards, human health risks, and environmental impacts associated with advanced thorium extraction methods. This study addresses these gaps by quantifying the environmental impact associated with solvent extraction and electrosorption techniques using a life cycle assessment (LCA) framework to compare environmental indicators for thorium recovery from monazite ore and WLP residues. The LCA was conducted from cradle to gate, incorporating inventory data from the Ecoinvent database 3 and SimaPro software version 9, with inputs of raw material extraction, transportation, energy consumption, and chemical uses. Emissions into air, water, and soil were quantified across all processing phases. The LCA midpoint findings reveal that thorium disulfate in monazite processing is the key contributor to global warming, producing 45 kg CO<sub>2</sub>-eq, whereas transportation and electricity consumption also considerably affect emissions, contributing 25.07 kg CO<sub>2</sub>-eq and 26.17 kg CO<sub>2</sub>-eq, respectively. Comparative analysis of midpoint indicators showed that solvent extraction had a more significant environmental impact than electrosorption in the context of human carcinogenic toxicity, freshwater ecotoxicity, and marine ecotoxicity. The damaged assessment highlighted endpoint indicators that monazite processing had a higher impact than WLP on human health (0.0364–0.0016 DALY), ecosystems (0.0016–0.0005 species·yr), and resources (0.0012–0.0005 USD, 2013), primarily due to the use of chemicals and emissions. Our study shows that electrosorption from WLP demonstrates superior environmental sustainability compared with solvent extraction from monazite, positioning it a more viable and efficient approach for radioactive waste treatment.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"26 ","pages":"Article 100960"},"PeriodicalIF":5.3,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835022","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
Hydrogen production and import thermal energy recovery and use: a study on water electrolysis waste heat and ammonia cracking cold utilisation 制氢和进口热能回收利用:水电解余热和氨裂解冷利用研究
IF 5.3
Cleaner Engineering and Technology Pub Date : 2025-04-14 DOI: 10.1016/j.clet.2025.100940
Maxime Philip Kramer , Klaas-Jan Bosch , Kamel Hooman
{"title":"Hydrogen production and import thermal energy recovery and use: a study on water electrolysis waste heat and ammonia cracking cold utilisation","authors":"Maxime Philip Kramer ,&nbsp;Klaas-Jan Bosch ,&nbsp;Kamel Hooman","doi":"10.1016/j.clet.2025.100940","DOIUrl":"10.1016/j.clet.2025.100940","url":null,"abstract":"<div><div>The aim of this study is to quantify and utilize waste heat from wind-farm-powered water electrolysers and ammonia cracking. The port of Rotterdam, as a case study, has been analyzed where the transport of 4.6 Mt hydrogen and water electrolysis, powered by wind farms, is planned. A dynamic model was developed to calculate waste heat from an electrolyser powered by fluctuating electricity inputs from offshore wind power. Moreover, thermal analysis of ammonia cracking process streams was conducted. It was observed that integrating water electrolysis waste heat into the ammonia cracking process is not only a promising novel application for the reuse of the electrolysis waste heat, but also it can potentially enhance cracking efficiency by 2 % while creating synergies within the hydrogen industry. Additionally, waste heat can be used for district heating saving more than 70 % of energy and reducing CO<sub>2</sub> by just as much. In parallel, cold utilisation from ammonia cracking was explored for CO<sub>2</sub> and H<sub>2</sub> compression, as well as industrial cold storage to observe that technical implementation is possible.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"26 ","pages":"Article 100940"},"PeriodicalIF":5.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876752","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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信