Cleaner Engineering and Technology最新文献

Modeling and optimization of calcined bentonite replacement in the mechanical and durability properties of mortar

IF 5.3

Cleaner Engineering and Technology Pub Date : 2024-12-01 DOI: 10.1016/j.clet.2024.100844

Tsion Amsalu Fode , Yusufu Abeid Chande Jande , Thomas Kivevele , Nima Rahbar

{"title":"Modeling and optimization of calcined bentonite replacement in the mechanical and durability properties of mortar","authors":"Tsion Amsalu Fode , Yusufu Abeid Chande Jande , Thomas Kivevele , Nima Rahbar","doi":"10.1016/j.clet.2024.100844","DOIUrl":"10.1016/j.clet.2024.100844","url":null,"abstract":"<div><div>Currently, pozzolanic materials are mostly recommended to improve the properties of cement composite materials and reduce environmental pollution, challenging the world owing to ordinary Portland cement (OPC) production. Bentonite is mostly available natural pozzolana, however, extensive studies conducted on other clays like kaolin and some studies reported that bentonite exists in a consolidated form which requires heating activation methods. Therefore, it is essential to investigate the properties of bentonite in detail for its sustainable use, and it is novel to model and optimize the optimum bentonite calcination temperature and time for the best performance replacement in mortar. Hence, the present study investigates the optimum bentonite calcination temperature, calcination time, and replacement dose for mortar strength and free lime using the central composite design-response surface method (CCD-RSM). The mortar was prepared by replacing the calcined bentonite with cement weight with different values of the factor variables, bentonite dose, calcination temperature, and calcination time. Durability tests were conducted after 56 days. Thus, the results indicate that the selected model of response variables for compressive strength and free lime were significant, accurate, reliable, and had excellent fitness to the experimental work. Hence, CCD-RSM predicted the optimum for independent factors of bentonite dose 19.99 %, calcination temperature 799.99 °C, and calcination time 135.04 min and experimentally validated, which improved the strength by 24.94% and reduced free lime by 3.08% compared to the control mortar, besides reducing CO<sub>2</sub> emissions compared to OPC production, which requires 1450 °C. Furthermore, the optimized bentonite replacement parameters have highly enhanced durability in different environments such as water, acids, salt, and elevated temperature compared to the control mixture at the age of 56 days.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"23 ","pages":"Article 100844"},"PeriodicalIF":5.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744129","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}

引用次数: 0

Reuse of building materials—the perspective of Swedish clients

IF 5.3

Cleaner Engineering and Technology Pub Date : 2024-12-01 DOI: 10.1016/j.clet.2024.100848

Filip Ericsson , Kristina Mjörnell , Ulla Janson

{"title":"Reuse of building materials—the perspective of Swedish clients","authors":"Filip Ericsson , Kristina Mjörnell , Ulla Janson","doi":"10.1016/j.clet.2024.100848","DOIUrl":"10.1016/j.clet.2024.100848","url":null,"abstract":"<div><div>In the context of the circular economy, there is an urgent need for transformation into circular material flows by avoiding waste, reducing extraction of virgin raw materials, and extending product life cycles. Within the construction and real estate industry, the reuse of building materials stands out as a critical strategy for value retention. The objective of this paper is to localise the forefront of the practical implementation of reused materials within the Swedish construction and real estate industry. To achieve this, the current state of reuse practices through the perspective of property companies as clients in decision-making positions was conducted through semi-structured interviews to identify key barriers and enablers associated with reuse. The three most significant barriers that emerged were a lack of measurable economic incentives, the absence of a professional reuse market, and obsolete project management. Conversely, the three most significant enablers were new and improved project management methods, enhancing competence and learning within and beyond organisations, and introduce reuse at an early stage. The results emphasise the need for project management to develop and adopt circular economy principles. This is further understood due to responders highlighting the industry's linear approach as a major obstacle to circularity together with uncertainties related to product performance, responsibilities and economics characterising reuse efforts. However, an industry in transition is witnessed, e.g. by the emergence of new roles which suggests a continued need for focused research in organisational matters.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"23 ","pages":"Article 100848"},"PeriodicalIF":5.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759502","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}

引用次数: 0

Towards low-carbon travel trips through carbon footprint: A case study of marine tourism in Sichang Island, Thailand 通过碳足迹实现低碳旅游：泰国锡昌岛海洋旅游案例研究

IF 5.3

Cleaner Engineering and Technology Pub Date : 2024-11-22 DOI: 10.1016/j.clet.2024.100840

Thammananya Sakcharoen , Wilailuk Niyommaneerat , Thapat Silalertruksa

{"title":"Towards low-carbon travel trips through carbon footprint: A case study of marine tourism in Sichang Island, Thailand","authors":"Thammananya Sakcharoen , Wilailuk Niyommaneerat , Thapat Silalertruksa","doi":"10.1016/j.clet.2024.100840","DOIUrl":"10.1016/j.clet.2024.100840","url":null,"abstract":"<div><div>The growing concern over climate change has heightened the need for low-carbon tourism practices. The study aims to evaluate the carbon footprint of marine tourism on Sichang Island, Thailand. The carbon footprint assessment is set for the three travel trips identified based on the tourist's lifestyle: Route I: Merit-making trip, Route II: Nature trip, and Route III: Relaxation, Adventure, and Education. The greenhouse gas (GHG) emissions calculation under each travel trip covers transportation, accommodation, meals, recreational activities, and waste management. The results revealed that the total GHG emissions for tourism routes I, II, and III are 9.9, 10.5, and 26.2 kg CO<sub>2</sub>e/person/trip, respectively. The study has analyzed the variations in carbon footprint results based on factors including the modes of transportation, i.e., ferry rides, high-speed boats, motorized three-wheeled vehicles (Tuk-Tuk), motorcycle and car rental; types of accommodation; food and beverage menu; recreational and marine tourism activities and solid waste management practices. The major contributors to the GHG emissions of routes I and II are the sea transport, meals, and land transport on the island. Route III has the highest carbon footprint because of the accommodation required for the tour program. The obtained carbon emission factors can be used to plan and manage marine tourism activities. By comparing activities, stakeholders can make informed decisions to minimize carbon footprints. The carbon emission reduction measures and the effective carbon offset programs for the island have been recommended.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"23 ","pages":"Article 100840"},"PeriodicalIF":5.3,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706235","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}

引用次数: 0

Recent advances of plant growth promoting rhizobacteria (PGPR) for eco-restoration of polluted soil 植物生长促进根瘤菌（PGPR）在污染土壤生态修复方面的最新进展

IF 5.3

Cleaner Engineering and Technology Pub Date : 2024-11-20 DOI: 10.1016/j.clet.2024.100845

Mohd. Zobair Iqbal, Kshitij Singh, Ram Chandra

{"title":"Recent advances of plant growth promoting rhizobacteria (PGPR) for eco-restoration of polluted soil","authors":"Mohd. Zobair Iqbal, Kshitij Singh, Ram Chandra","doi":"10.1016/j.clet.2024.100845","DOIUrl":"10.1016/j.clet.2024.100845","url":null,"abstract":"<div><div>The emergence of several complex environmental pollutants from various industrial activities has posed a global challenge for ecorestoration and sustainable development. The use of Plant Growth-Promoting Rhizobacteria (PGPR) for the remediation of soil pollution has gained recognition as a promising biotechnological tool for sustainable development. Recent advances in metagenomic approaches have allowed for the detection of rhizospheric bacterial communities from polluted soils revealing their contributions to the degradation of complex pollutants through the production of potential enzymes as a novel technique. In addition, protein/enzyme engineering and the fate of heavy metals accumulation in plant tissues, through bacterial-assisted phytoremediation, has expanded the role of PGPR in soil reclamation by improving their efficacy, understanding their mechanisms of action, and integrating them with other innovative approaches been reported as advance technique. These advancements give strong evidence for more efficient and sustainable soil remediation strategies, aiding in the restoration of contaminated soil and ensuring environmental sustainability. These techniques and PGPR attributes will provide a green technology for environmental safety.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"23 ","pages":"Article 100845"},"PeriodicalIF":5.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722483","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}

引用次数: 0

Synthesis and modification of nanofiltration membranes with dendrimer-modified graphene oxide to remove lead and cadmium ions from aqueous solutions 用树枝状聚合物修饰的氧化石墨烯合成和改性纳滤膜，以去除水溶液中的铅和镉离子

IF 5.3

Cleaner Engineering and Technology Pub Date : 2024-11-19 DOI: 10.1016/j.clet.2024.100843

Saeed Niazkhani , Farham Aminsharei , Sayed Ali Hassanzadeh-Tabrizi , Asadolah Malekzadeh , Elham Ameri

{"title":"Synthesis and modification of nanofiltration membranes with dendrimer-modified graphene oxide to remove lead and cadmium ions from aqueous solutions","authors":"Saeed Niazkhani , Farham Aminsharei , Sayed Ali Hassanzadeh-Tabrizi , Asadolah Malekzadeh , Elham Ameri","doi":"10.1016/j.clet.2024.100843","DOIUrl":"10.1016/j.clet.2024.100843","url":null,"abstract":"<div><div>This study explored the use of graphene oxide modified with dendrimer (GO/MDA) to enhance the hydrophilicity and reduce the clogging of nanofiltration membranes, aiming to remove lead and cadmium from aqueous solutions. The synthesis involved multiple steps for creating graphene oxide (GO) nanoparticles and dendrimer (MDA), with FT-IR and EDX tests confirming the successful fabrication of GO/MDA and its application in nanofiltration membranes. Four types of membranes were designated based on the concentration of GO/MDA used: nanofiltration without nanoparticles (NF), nanofiltration with 0.25% weight of nanoparticles (NF-0.25), nanofiltration with 0.5% weight of nanoparticles (NF-0.5), and nanofiltration with 1% weight of nanoparticles (NF-1). The results showed a significant decrease in contact angle from 68.2° to 51.6° with the increase of GO/MDA concentration from 0.25% to 1%, illustrating improved hydrophilicity. Moreover, the pure water flow rate increased, with the NF-1 membrane achieving the highest flow rate of 121 L/m<sup>2</sup>.h, compared to 86 L/m<sup>2</sup>.h for the standard NF membrane. The study also established that the removal efficiencies for lead and cadmium improved with rising pH levels, peaking at pH 6, where the NF-0.5 membrane achieved optimal removal rates of 89.45% for Pb<sup>2</sup>⁺ and 92.58% for Cd<sup>2</sup>⁺. Additionally, the incorporation of GO/MDA nanoparticles effectively reduced irreversible fouling, with the NF-0.5 membrane displaying a remarkable flux recovery percentage of 97.21%. Overall, the findings confirm that the incorporation of GO/MDA nanoparticles successfully enhanced the performance of nanofiltration membranes in removing heavy metals.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"23 ","pages":"Article 100843"},"PeriodicalIF":5.3,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706671","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}

引用次数: 0

Cost-effective solar-driven configurations for post-combustion carbon capture at Abadan Power Plant: MEA, DEA, and DGA absorption-based 阿巴丹发电厂具有成本效益的燃烧后碳捕集太阳能驱动配置：基于吸收的 MEA、DEA 和 DGA

IF 5.3

Cleaner Engineering and Technology Pub Date : 2024-11-19 DOI: 10.1016/j.clet.2024.100842

Farzin Hosseinifard , Milad Hosseinpour , Mohsen Salimi , Majid Amidpour

{"title":"Cost-effective solar-driven configurations for post-combustion carbon capture at Abadan Power Plant: MEA, DEA, and DGA absorption-based","authors":"Farzin Hosseinifard , Milad Hosseinpour , Mohsen Salimi , Majid Amidpour","doi":"10.1016/j.clet.2024.100842","DOIUrl":"10.1016/j.clet.2024.100842","url":null,"abstract":"<div><div>In recent years, post-combustion carbon capture (PCC) has garnered attention as a strategy to mitigate industrial emissions, though conventional configurations often face high energy demands. This study used Aspen HYSYS v11 to simulate and optimize various PCC configurations to enhance energy efficiency and reduce costs. The analysis compared three common amines monoethanolamine (MEA), diethanolamine (DEA), and diglycolamine (DGA) with DGA demonstrating the most significant energy savings. Utility costs, including steam, were approximately $101.3 million annually for DGA, compared to $158 million for MEA and $127.4 million for DEA. Among the configurations, lean vapor compression (LVC), rich vapor compression (RVC), solvent split flow (SSF), and rich recycle solvent (RSR), when combined, achieved the highest reduction in energy use, leading to about 45% cost savings over conventional setups. Replacing steam from a power plant with solar energy for the reboiler in this configuration provided additional savings, requiring 1.1 km<sup>2</sup> of solar area with 13 h of storage to achieve lifetime savings of roughly $295 million. Furthermore, exergy analysis revealed a 34.4% efficiency gain with the optimized configuration. Notably, implementing DGA reduced annual carbon taxes from $18.7 million to $2.8 million, underscoring the economic and environmental advantages of this approach.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"23 ","pages":"Article 100842"},"PeriodicalIF":5.3,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706281","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}

引用次数: 0

Spent coffee ground biochar for phosphate adsorption in water: Influence of pyrolysis temperature and iron-coating activation method 用于吸附水中磷酸盐的咖啡渣生物炭：热解温度和铁涂层活化方法的影响

IF 5.3

Cleaner Engineering and Technology Pub Date : 2024-11-15 DOI: 10.1016/j.clet.2024.100839

Alessia Torboli , Paola Foladori , Mingming Lu , Stefano Gialanella , Lorena Maines

{"title":"Spent coffee ground biochar for phosphate adsorption in water: Influence of pyrolysis temperature and iron-coating activation method","authors":"Alessia Torboli , Paola Foladori , Mingming Lu , Stefano Gialanella , Lorena Maines","doi":"10.1016/j.clet.2024.100839","DOIUrl":"10.1016/j.clet.2024.100839","url":null,"abstract":"<div><div>A substantial portion of the phosphorus utilized in crop and food production is dispersed into soil and water, posing a challenge to the management of eutrophication and sustainable nutrient recovery. This research focuses on the reclamation of phosphate from polluted water through affinitive adsorption on biochar derived from spent coffee grounds (SCG). SCG were subjected to pyrolysis within a N<sub>2</sub>-purged vertical furnace across a temperature range of 300–550 °C, with a 1-h holding time. The adsorption capability of SCG biochar was systematically investigated and experimental data were interpreted using Langmuir and Freundlich isotherm models. Notably, the biochar pyrolyzed at 450 °C and activated with a Fe/biochar mass ratio of 2:1 demonstrated the highest adsorption capacity (0.87 mg P/g biochar) when exposed to the highest initial phosphate concentration in the solution (15 mg P/L). Comparative analyses revealed that the removal efficiency of non-activated SCG biochar was considerably lower (5.7%) compared to the corresponding activated biochar (up to 17.3%). This highlights the significant increase in adsorption capacity facilitated by the introduction of ferric chloride. Furthermore, phosphate desorption experiments were conducted to assess the biochar's phosphorus release characteristics and stability. The results demonstrate the positive outcomes of upcycling SCG waste material as a pollutant sorbent and the potential to diminish reliance on chemical fertilizers through the recovery of Fe-phosphate-enriched SCG biochar.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"23 ","pages":"Article 100839"},"PeriodicalIF":5.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706672","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}

引用次数: 0

Synthesis and characterization of potato starch as a feasible alternative to the commercial yarn sizing materials 合成马铃薯淀粉并确定其特性，作为商用纱线上浆材料的可行替代品

IF 5.3

Cleaner Engineering and Technology Pub Date : 2024-11-15 DOI: 10.1016/j.clet.2024.100838

Fahmida Faiza Fahmi, Md Syduzzaman

{"title":"Synthesis and characterization of potato starch as a feasible alternative to the commercial yarn sizing materials","authors":"Fahmida Faiza Fahmi, Md Syduzzaman","doi":"10.1016/j.clet.2024.100838","DOIUrl":"10.1016/j.clet.2024.100838","url":null,"abstract":"<div><div>In Bangladesh, surplus potatoes pose challenges, leading to substantial wastage and losses. To mitigate this issue, exploring diverse applications for excess potatoes is crucial. This study focuses on using locally produced potato starch as an alternative sizing material. The potato starch was extracted and employed to size 100% cotton yarns of 12, 20, and 30 Ne counts. Comparative analyses were conducted with commonly used commercial sizing agents, including tapioca starch, one-shot, and Amatrolid 8923. Technical parameters such as size solution viscosity, yarn pick-up percentage, coating quality, hairiness reduction, tensile strength, elongation percentage, abrasion resistance, and coefficient of variation (CV%) were investigated for the different sizing agents. Potato starch exhibited performance on par with commercial agents, yielding favorable results. Particularly for coarser yarns (12 and 20 Ne counts), potato starch outperformed the alternatives, showcasing its efficacy. While one-shot proved most effective for the 30 Ne yarn, potato starch displayed slightly diminished performance due to its higher viscosity. Overall, potato starch emerged as a promising alternative to conventional sizing agents. It surpassed tapioca starch and Amatrolid 8923 across various parameters, reaffirming its potential as a feasible substitute in yarn sizing applications. This study underscores the viability of potato starch in enhancing the sustainability and efficiency of textile production processes.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"23 ","pages":"Article 100838"},"PeriodicalIF":5.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706669","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}

引用次数: 0

Explainable tuned machine learning models for assessing the impact of corrosion on bond strength in concrete 用于评估腐蚀对混凝土粘结强度影响的可解释调谐机器学习模型

IF 5.3

Cleaner Engineering and Technology Pub Date : 2024-11-12 DOI: 10.1016/j.clet.2024.100834

Maryam Bypour , Alireza Mahmoudian , Mohammad Yekrangnia , Mahdi Kioumarsi

{"title":"Explainable tuned machine learning models for assessing the impact of corrosion on bond strength in concrete","authors":"Maryam Bypour , Alireza Mahmoudian , Mohammad Yekrangnia , Mahdi Kioumarsi","doi":"10.1016/j.clet.2024.100834","DOIUrl":"10.1016/j.clet.2024.100834","url":null,"abstract":"<div><div>This study mainly aims to evaluate the bond strength of corroded reinforcements in reinforced concrete members. In this regard, a comprehensive dataset containing a total of 285 specimens was collected from previous experiments. All collected specimens, including normal concrete, were subjected to pull-out tests to ensure consistent results. The features evaluated are associated with both concrete and rebar characteristics, corrosion rate, and duration. Six machine learning (ML) models were used to assess the dataset: Decision Tree, Random Forest, Light Gradient-Boosting Machine, Gradient Boosting, Extreme Gradient Boosting, and Extra Tree. Hyperparameter tuning was conducted using grid search to optimize model performance and enhance predictive accuracy. Additionally, the Shapley Values technique was utilized to interpret the significance of the features on bond strength.</div><div>The results show that Extreme Gradient Boosting and Extra tree methods outperformed the other models, with <span><math><mrow><msup><mi>R</mi><mn>2</mn></msup></mrow></math></span> score of 0.9 each and RSME of 2.21 and 1.87, respectively. Furthermore, tuned models resulted in more accurate performance than the default models. Evaluating the significance of studied features indicated that the elevated levels of corrosion were associated with a negative impact on bond strength. In addition, the corrosion rate is considered to be the most influential factor affecting the bond strength.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"23 ","pages":"Article 100834"},"PeriodicalIF":5.3,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706670","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}

引用次数: 0

Analyzing the impact of age on waste properties at an open dumpsite in Khulna 分析年龄对库尔纳露天垃圾场废物特性的影响

IF 5.3

Cleaner Engineering and Technology Pub Date : 2024-11-12 DOI: 10.1016/j.clet.2024.100833

Saptarshi Mondal, Islam M. Rafizul

{"title":"Analyzing the impact of age on waste properties at an open dumpsite in Khulna","authors":"Saptarshi Mondal, Islam M. Rafizul","doi":"10.1016/j.clet.2024.100833","DOIUrl":"10.1016/j.clet.2024.100833","url":null,"abstract":"<div><div>The rapid growth of the population has led to a significant increase in the amount of municipal solid waste (MSW), posing a burden and concern for our environment. Landfill mining as well as waste to energy could be a solution to this issue, but they require waste composition, particle size, and physiochemical and ultimate analysis are prerequisite requirements. Particle size was assessed through sieve analysis, categorizing MSW into ten different types followed by physiochemical and ultimate analyses. This study aimed to examine how the properties of MSW change with age. Findings showed that fine particles increased with age while larger particles decreased. With aging, certain physical components decreased, while others either increased or stayed constant. Organic content showed a significant decrease of 70.548% for fresh MSW and 0.35% for fifteen-year-old waste whereas plastic content remained almost constant after an increase from fresh MSW. Moisture content and volatile content of MSW reduced with age while fixed carbon and ash content increased with age. Ultimate analysis shows a drop of carbon, hydrogen, and nitrogen while oxygen shows a rise. Calorific value was found a decrease in trend with age indicating that the energy content of MSW reduced with age. A drastic reduction of unit weight was found in this study, dropping from 9.31 kN/m<sup>3</sup> to 4.668 kN/m<sup>3</sup>. This study highlights the overall composition of MSW, the fluctuation in physiochemical analysis with age, and the sieve analysis and particle size distribution. It also displays the unit weight and the age-wise variation of the ultimate analysis. The findings of this study will aid landfill mining and waste to energy by providing comprehensive properties of MSW.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"23 ","pages":"Article 100833"},"PeriodicalIF":5.3,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706234","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}

引用次数: 0