Cleaner Engineering and Technology最新文献

{"title":"Study on the transient thermo-mechanical coupling mechanism at tool-chip interface in ultrasonic vibration assisted chip formation process under sustainable dry machining conditions","authors":"Xuelin Chen ,&nbsp;Wen Shao ,&nbsp;Jinyuan Tang ,&nbsp;Yuansheng Zhou ,&nbsp;Dimitrios Kontziampasis ,&nbsp;Shuai Mo ,&nbsp;Bo Hu","doi":"10.1016/j.clet.2025.100908","DOIUrl":"10.1016/j.clet.2025.100908","url":null,"abstract":"<div><div>Dry machining has become one of the most promising and sustainable manufacturing processes in mechanical machining. One of the main puzzles for industrial applications of dry machining is tool wear, which are closely related with the transient thermomechanical characteristics of tool-chip interface (TCI). Simultaneously, those characteristics at micro scale can provided the critical insight of cutting mechanics and tool wear in ultrasonic vibration assisted cutting (UVC). However, reports in literature appear to be scarce. In this study the transient model of thermomechanical behavior in TCI is proposed, with a consideration of characteristics changes induced by ultrasonic vibration, as well as a focus on the transient cutting mechanism, as well as stress and friction. The proposed model is validated by comparison with the experimental and published analytical results. Obtained results from the proposed model indicate that the distribution of normal stress and average shear stress are similar to those that are predicted by Zorev's model. However, a noticeable apparent discrepancy appears between the two models regarding the distribution of shear stress. Apparently, the ultrasonic vibration changes the friction via alternating normal and shear stresses, and delays the time for the cutting force and the stress to reach their peak point. Additionally, it is confirmed that the fluctuation and increment of friction coefficient is due to the cutting force reduction in UVC under sustainable dry conditions.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"25 ","pages":"Article 100908"},"PeriodicalIF":5.3,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selection of electrochemical and electrical energy storage systems for off-grid renewable energy mini-grids: A review","authors":"Isaac Gwayi,&nbsp;Sarah Paul Ayeng’o,&nbsp;Cuthbert Z.M. Kimambo","doi":"10.1016/j.clet.2025.100906","DOIUrl":"10.1016/j.clet.2025.100906","url":null,"abstract":"<div><div>Application of electrochemical energy storage systems (ESSs) in off-grid renewable energy (RE) mini-grids (REMGs) is crucial to ensure continuous power supply. These storage systems face accelerated degradation due to fluctuations in demand and supply power of the system. Although various research has been conducted in the field of ESSs, study on selecting appropriate ESSs for off-grid REMGs, considering power fluctuations impact, is still a gap which needs further research. This review study therefore, focused on studying and selecting appropriate electrochemical and electrical storage systems for off-grid REMGs through investigating their technical, economic and environmental factors. On economic factors investigation; capital recovery factor (CRF) and annualised cost (AC) of considered ESSs were used in this study. Comparison and analysis of technical and economic factors of the storage systems were done using graphical method. Results show that hybrid combination of lithium-ion (Li-ion) battery or lead acid (Pb-Acid) battery with supercapacitor (SC) are appropriate ESSs for off-grid REMGs. Furthermore, trade-offs between ESSs options are analysed and the study recommends hybridisation of Li-ion, Pb-Acid and SC to further improve performance of the hybrid storage. Finally, challenges in deploying the proposed hybrid energy storage system (HESS) configurations are discussed and areas needing further research for improvement are proposed.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"25 ","pages":"Article 100906"},"PeriodicalIF":5.3,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Productization of carbon handprint – A product management perspective","authors":"Pukar Jung Kunwar ,&nbsp;Janne Harkonen ,&nbsp;Harri Haapasalo ,&nbsp;Iqra Sadaf Khan ,&nbsp;Jukka Majava","doi":"10.1016/j.clet.2025.100903","DOIUrl":"10.1016/j.clet.2025.100903","url":null,"abstract":"<div><div>Despite its potential benefits, knowledge of the carbon handprint notion lacks the necessary means to address products and services in a structured manner, hindering appropriate methodological implementation and limiting support for firms' cleantech activities. Furthermore, an essential link to the product management perspective is lacking. To address this gap, this study details the components and features of products and their environmental impact to facilitate carbon handprint quantification and communication through productization. A conceptual research approach was adopted to develop a framework that links the carbon handprint to a broader product management perspective through productization. Selected theories provide a level of rationale for the productization of carbon handprints. This study presents illustrative examples involving motor vehicles and building construction and a generic approach to demonstrate how carbon handprints can be integrated into product structures over the engineering lifecycle. The productization approach enables businesses to effectively connect emissions and positive impacts on products. By broadening the understanding of carbon handprints through productization, companies can systematically utilize carbon emission information both internally and externally. This supports the overall product management perspective and enables effective analytics and reporting of carbon footprints and handprints.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"25 ","pages":"Article 100903"},"PeriodicalIF":5.3,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Upgrading corncob bio-oil via oxidative pretreatment, esterification and azeotropic distillation","authors":"Nattawut Khuenkaeo ,&nbsp;Prapaporn Prasertpong ,&nbsp;Nakorn Tippayawong","doi":"10.1016/j.clet.2024.100874","DOIUrl":"10.1016/j.clet.2024.100874","url":null,"abstract":"<div><div>Bio-oils produced from fast pyrolysis of agricultural residues are considered renewable without competition against food production. However, pyrolytic bio-oils are limited for direct use as fuels because of poor properties, hence, upgrading may be needed. In this study, both aqueous and organic phase bio-oils were oxidized with ozone and subsequently esterified with n-butanol or methanol in the presence of Amberlyst-15 catalyst. Ozone-UV oxidation successfully formed sufficient carboxylic acids to serve as intermediate reagent for esterification. For the organic fraction of bio-oils esterified with methanol and n-butanol accompanied by water removal, significant reduction of acids (∼75–78% total acid number and ∼53–61% of carboxylic acids) was achieved. It appeared to have lower water and oxygen content and high calorific values of 32.2–35.1 MJ/kg. The esterified aqueous fraction of bio-oils achieved high ester yield with the maximum yield of 62.5% oxygenated compounds at 1.5% catalyst loading and oxidized bio-oil to n-butanol ratio of 1:1. Although significant amount of water and oxygen was removed, the resulting liquid still had relatively low calorific value.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"24 ","pages":"Article 100874"},"PeriodicalIF":5.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the area energy performance of suburban industrial parks in the tokyo metropolitan area","authors":"Ruiyi Zhang ,&nbsp;Wanglin Yan","doi":"10.1016/j.clet.2025.100888","DOIUrl":"10.1016/j.clet.2025.100888","url":null,"abstract":"<div><div>Suburban industrial parks (SIP) are crucial for cities; yet their environmental and economic sustainability require continuous efforts regarding energy intensity. While recent studies have examined the energy performance of individual SIPs, there is limited understanding of their mutual influence in local industrial contexts. This study introduced a new area energy performance (AEP) indicator to assess the energy productivity of SIPs in the Tokyo metropolitan area (TMA) using a suburban industrial community (SIC) model. Enterprise-based location quotients for 89 SIP samples across 11 industrial sectors were used to evaluate local industrial structures (LIS) at SIP, its surrounding, and regional scales. The results showed that SIPs in Tokyo Prefecture had exceptionally high AEP values owing to outstanding industrial energy productivities, suggesting their potential to lead sustainable development. The spatial variation in AEP reflects the characteristics of LIS, with machinery industries dominating SIPs and their surroundings, whereas living-related industries prevailed regionally. Furthermore, the AEP values of neighborhood areas were usually between those of the SIPs and their municipalities. This suggests that the agglomeration effects of SIPs' energy productivity could help the SIC perform better overall, especially in the eastern TMA. Our analysis revealed that 18 out of 43 low-performing SIPs exceeded municipal averages when expanded to the SIC scale, highlighting the importance of neighborhood synergies. The findings highlight the importance of contextualized industrial spatial planning and SICs’ sustainable revitalization in the metropolitan peripheries, providing spatial-specific insights for policymakers and industrial planners.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"24 ","pages":"Article 100888"},"PeriodicalIF":5.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smart manufacturing system with rework and partial outsourcing for battery industry","authors":"Ritu Arora ,&nbsp;Divya Chauhan ,&nbsp;Anubhav Pratap Singh ,&nbsp;Anu Sayal","doi":"10.1016/j.clet.2025.100885","DOIUrl":"10.1016/j.clet.2025.100885","url":null,"abstract":"<div><div>Batteries have an important role in the energy industry by storing energy that can be utilized when it is needed. This not only has a positive impact on the environment but also contributes to the creation of a more sustainable and dependable energy system. This study introduces an advanced manufacturing inventory system that considers scheduled backorders and the reworking process of imperfect batteries detected during inspection. Industries face a significant challenge of shortage problems due to increasing demand and product variability. To tackle this issue, a study has been conducted to produce high-quality batteries and minimize waste generation. Computer-integrated technologies are utilized to ensure product authenticity. Partial outsourcing is crucial to expedite the backorder recovery process, and the setup, production, outsourcing, holding, backorder, rework, screening, and advertisement costs have all been meticulously considered. Demand is viewed as an advertisement cost and selling price dependent due to variations in real-world demand. Simulated annealing has been used to optimize profit, and the developed model has been validated with sensitivity analysis and numerical examples. This study has significant implications for the energy sector, emphasizing sustainable industrialization and economic growth.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"24 ","pages":"Article 100885"},"PeriodicalIF":5.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Circularity in textile waste: Challenges and pathways to sustainability","authors":"Saloua Biyada ,&nbsp;Jaunius Urbonavičius","doi":"10.1016/j.clet.2025.100905","DOIUrl":"10.1016/j.clet.2025.100905","url":null,"abstract":"<div><div>Emerging fast fashion concepts in the textile industry have contributed to the over-consumption of clothing and the consequent over-production of waste. Meanwhile, consciousness of the environmental pollution associated with the ongoing production and disposal of textiles has greatly expanded. For these reasons, greener and cleaner solutions are constantly being sought to remedy the negative impact of this waste on the environment sustainably. In this respect, the aim of this study is to provide an overview of the negative impact of textile waste on the environment, also the current research aimed at cleaner and more sustainable biotechnologies and to spotlight new developments in waste management strategies to remedy it. To achieve this, a literature review is provided based on data from Scopus, Web of Science and Google Scholar. The outcome of this study reveals that: i) the production of textile waste has increased significantly with the increase in clothing production; ii) the lack of rigorous environmental legislation related to the textiles production can further exacerbate the problem and contribute to increased environmental pollution; iii) the existing textile waste management programmes have proved unsuccessful; iv) clean and sustainable solutions such as biological treatment are required to overcome the harmful effects of textile waste; v) biotechnologies that use these wastes may generate valuable new products, clean energy, etc. Ultimately, overview of current-state-of-art suggests that textile waste can be successfully managed through biological treatment (using micro-organisms and especially enzymes), and thus mitigate the inappropriate textile waste management programs, thereby demonstrating the added value of the current study for the forthcoming research.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"24 ","pages":"Article 100905"},"PeriodicalIF":5.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Upcycling of construction and demolition waste: Recovery and reuse of binder and fine aggregate in cement applications to achieve circular economy","authors":"Ravi Chandra Malladi ,&nbsp;Aswathy Ajayan S ,&nbsp;Gayathri Chandran ,&nbsp;Thirumalini Selvaraj","doi":"10.1016/j.clet.2024.100864","DOIUrl":"10.1016/j.clet.2024.100864","url":null,"abstract":"<div><div>The effective recycling and utilization of construction and demolition (C&amp;D) waste to its maximum capacity to achieve a circular economy model is challenging in the current scenario. This current research emphasizes upcycling C&amp;D waste using an acid dissolution method to separate the binder and aggregate fractions, and their performance was evaluated in cement mortar mixtures. The results showed that replacing 20% of cement with the recovered binder improved compressive strength by 8.07%, enhanced hydration product formation, and decreased water absorption and porosity by 11.48% and 5.21%, respectively. Replacing natural sand with recycled aggregates also resulted in comparable strength gains compared to reference mortars. The complete utilization of the secondary products from the upcycled C&amp;D waste in construction activities helps to achieve sustainable development goals by reducing the carbon footprint and contributing to a circular economy model.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"24 ","pages":"Article 100864"},"PeriodicalIF":5.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the dual impact of microbial activity and aged refuse layers on landfill leachate clogging: An experimental and LCA perspective","authors":"Zhaobin Li,&nbsp;Waifan Tang,&nbsp;Shulun Mak,&nbsp;Siukei Lam,&nbsp;Qingwen Li","doi":"10.1016/j.clet.2025.100887","DOIUrl":"10.1016/j.clet.2025.100887","url":null,"abstract":"<div><h3>Background</h3><div>Leachate-induced clogging in landfill drainage systems significantly impairs operational efficiency while posing substantial environmental risks. The complex interactions among leachate components (e.g., organic matter, heavy metals, and inorganic salts), microbial communities, and inorganic precipitates lead to clogging that reduces hydraulic conductivity. Traditional control methods often fail to address these underlying processes, necessitating a deeper understanding of clogging mechanisms and effective mitigation strategies.</div></div><div><h3>Significance</h3><div>This study provides an in-depth analysis combining a review of existing literature and experimental insights into the role of microbial communities in clogging formation and the effectiveness of aged refuse layers as a mitigation measure.</div><div>To provide a comprehensive assessment, a life cycle assessment (LCA) framework is employed to analyze the environmental impacts of various clogging control methods.</div><div>This study contributes to theoretical advancements by integrating a comprehensive review of LCA frameworks in the context of landfill management, addressing a gap in current literature. The integration also provides a nuanced analysis of the environmental trade-offs and their implications for sustainable landfill practices.</div><div>By integrating LCA, this research offers a dual perspective that addresses both technical challenges and environmental trade-offs, contributing to more sustainable landfill management practices.</div></div><div><h3>Results</h3><div>Laboratory experiments demonstrated that microbial activity significantly promoted calcium carbonate precipitation, leading to reduced hydraulic conductivity in landfill drainage systems. Partially saturated aged refuse layers reduced clogging potential by up to 40% by stabilizing leachate chemistry and inhibiting biofilm formation. However, life cycle assessment (LCA) results indicate that while aged refuse layers mitigate clogging, they also increase the global warming potential (GWP) by 10% compared to conventional methods, highlighting the need to balance technical efficacy with environmental sustainability.</div></div><div><h3>Conclusion</h3><div>This study provides critical insights into microbial contributions to landfill leachate-induced clogging and emphasizes the importance of incorporating environmental considerations into landfill management. Although aged refuse layers are effective in reducing clogging, their environmental trade-offs should be carefully evaluated. Future research should explore alternative materials and configurations to optimize both clogging control and environmental performance, promoting more sustainable landfill drainage management strategies.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"24 ","pages":"Article 100887"},"PeriodicalIF":5.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143140558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microwave-assisted chloride leaching for efficient recovery of platinum group metals from spent automotive catalysts: An approach for chemical reagent reduction","authors":"Frantisek Kukurugya,&nbsp;Wendy Wouters,&nbsp;Jeroen Spooren","doi":"10.1016/j.clet.2024.100868","DOIUrl":"10.1016/j.clet.2024.100868","url":null,"abstract":"<div><div>The unique chemical and catalytic properties of platinum group metals play an important role in transition towards a more sustainable society. Recognizing their economic significance, the European Union (EU) has classified platinum group metals as strategic and critical raw materials. Due to the scarcity of primary sources, the EU heavily relies on imports of platinum group metals from third countries. Therefore, maximizing the recovery of platinum group metals from secondary sources, such as spent automotive catalysts, is essential. This study aims to optimize a microwave-assisted leaching process to enhance the selective extraction of palladium, platinum and rhodium efficiently while minimizing chemical reagents use. Initially, the main parameters such as concentration of reagents, reaction temperature and processing time were optimized on a small laboratory scale before scaling up. Results showed that reducing the hydrochloric acid concentration from 6 to 1.5 M and addition of sodium chloride as alternative source of chlorine anions, slightly decreased platinum group metals extraction but significantly improved selectivity towards matrix elements like aluminium, cerium, and magnesium. Applying the optimized conditions of microwave-assisted leaching in an upscaling experiment resulted in extractions of more than 90% for palladium and platinum, and almost complete extraction of rhodium. The optimized process can create opportunities for establishing small to medium-scale local hydrometallurgical plants for recovery of platinum group metals.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"24 ","pages":"Article 100868"},"PeriodicalIF":5.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}