Journal of Material Cycles and Waste Management最新文献_第9页

A comprehensive evaluation of steel slag asphalt mixtures: performance, functional applications, and ecological considerations 钢渣沥青混合料的综合评价：性能、功能应用和生态考虑

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-05-12 DOI: 10.1007/s10163-025-02241-4

Jun Zhang, Naisheng Guo, Shichao Cui, Zhanping You

{"title":"A comprehensive evaluation of steel slag asphalt mixtures: performance, functional applications, and ecological considerations","authors":"Jun Zhang, Naisheng Guo, Shichao Cui, Zhanping You","doi":"10.1007/s10163-025-02241-4","DOIUrl":"10.1007/s10163-025-02241-4","url":null,"abstract":"<div><p>Steel slag offers a sustainable alternative to traditional aggregates in road construction. This review highlights the performance, environmental risks and economic benefits of steel slag asphalt mixture. Key findings indicate that steel slag-asphalt adhesion surpasses that of natural aggregates, enhancing the road performance of steel slag asphalt mixtures. Physical treatments provide only temporary control over volume expansion, while chemical treatments offer permanent solutions. Furthermore, steel slag asphalt mixtures exhibit superior heating and self-healing capabilities under microwave conditions compared to induction heating. Steel slag’s inherent surface porosity and electrical conductivity afford them enhanced functionality over conventional aggregates. Despite their environmental advantages and economic viability, challenges persist concerning the long-term leaching of heavy metals, high specific gravity, and increased asphalt content. Future research should prioritize the development of cost-effective chemical treatments to address volume expansion and optimize asphalt content. In addition, establishing comprehensive testing for heavy metal and gaseous emissions in trial sections and conducting detailed life cycle assessments (LCAs) are recommended to facilitate the broader adoption of steel slag asphalt pavements.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 4","pages":"2032 - 2053"},"PeriodicalIF":3.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Innovative approaches for recycling office waste paper with potential for sound-absorbing wall panels 利用创新方法回收办公室废纸，并可制成吸音墙板

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-05-11 DOI: 10.1007/s10163-025-02250-3

Chun-Won Kang, Byung-Sook Choi, Masumi Hasegawa, Jeong Seok Oh, Haradhan Kolya

{"title":"Innovative approaches for recycling office waste paper with potential for sound-absorbing wall panels","authors":"Chun-Won Kang, Byung-Sook Choi, Masumi Hasegawa, Jeong Seok Oh, Haradhan Kolya","doi":"10.1007/s10163-025-02250-3","DOIUrl":"10.1007/s10163-025-02250-3","url":null,"abstract":"<div><p>This study addresses the dual challenges of waste management and noise pollution by developing an eco-friendly sound-absorbing material using crushed waste printed paper. The objective is to repurpose office waste paper into a sustainable sound absorption panel board, offering an alternative to traditional materials. The novelty of this research lies in the combination of crushed waste paper with varying air-back cavity depths to optimize sound absorption, particularly at lower frequencies. Samples of varying thicknesses (10–30 mm) were evaluated using the impedance tube method across 250–6400 Hz. The findings show that the sound absorption coefficient (SAC) and Noise Reduction Coefficient (NRC) increase with greater thickness and air-back cavities. The thickest sample achieved a peak NRC of 0.56. Statistical analysis (t-test) confirms a significant variation in the sound absorption coefficient with sample thickness and the presence of an air back cavity. These results suggest that crushed waste paper could be useful for sound-absorbing panel boards in wall, ceiling tiles, and acoustic panels. Its application may help reduce carbon dioxide emissions and promote environmental sustainability.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 4","pages":"2444 - 2453"},"PeriodicalIF":3.0,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of socioeconomic status on characterization of household waste in Anantapur Municipal Corporation Region, Andhra Pradesh, India 社会经济地位对印度安得拉邦Anantapur市政公司地区生活垃圾特征的影响

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-05-10 DOI: 10.1007/s10163-025-02247-y

Rama Bhupal Reddy Donthi, Bhavani Ramannagari

{"title":"Impact of socioeconomic status on characterization of household waste in Anantapur Municipal Corporation Region, Andhra Pradesh, India","authors":"Rama Bhupal Reddy Donthi, Bhavani Ramannagari","doi":"10.1007/s10163-025-02247-y","DOIUrl":"10.1007/s10163-025-02247-y","url":null,"abstract":"<div><p>Managing municipal solid waste (MSW) poses a significant challenge for developing nations grappling with severe pollution issues resulting from the substantial generation of waste. This paper presents an evaluation of MSW generation, considering various socioeconomic groups (SEGs) based on size of family, occupation, education, salary, etc., using a questionnaire survey conducted in the Anantapur Municipality Corporation (AMC) region. The household waste (HW) generation rates varied from 0.305 to 1.65 kg/day. On average, the waste generated in the AMC region amounted to 0.253 kg/capita/day (KCD), with the highest rate observed within the high socioeconomic group (HSEG) at 0.291 KCD. It is noted that across all SEGs, the highest amount of waste generated on Sunday, with kitchen and yard waste being the primary components of MSW. Size of the family was positively correlated with waste generation rates (WGR).The range of HW volatile matter content was 18–26% and moisture content varied from 30 to 45%. From findings, it is evident that 74% of the residents lack sufficient understanding regarding the management of MSW. The results of this study highlighting the waste generation patterns and composition differences across socioeconomic groups, and identifying major gaps in public awareness can assist regulatory bodies and city councils in designing targeted interventions such as source segregation policies, waste minimization strategies, and community-specific awareness programmes.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 4","pages":"2736 - 2748"},"PeriodicalIF":3.0,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IoT-enabled smart waste management: applications, adoption barriers, and mitigation strategies in the Indian scenario 基于物联网的智能废物管理：印度情景中的应用、采用障碍和缓解战略

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-05-09 DOI: 10.1007/s10163-025-02248-x

Smita Agrawal, Parita Oza, Shrey Patel, Harsh Oza, Yash Sharma, Tirth Patel

{"title":"IoT-enabled smart waste management: applications, adoption barriers, and mitigation strategies in the Indian scenario","authors":"Smita Agrawal, Parita Oza, Shrey Patel, Harsh Oza, Yash Sharma, Tirth Patel","doi":"10.1007/s10163-025-02248-x","DOIUrl":"10.1007/s10163-025-02248-x","url":null,"abstract":"<div><p>Waste management remains a pressing issue worldwide, with challenges varying significantly between developed and developing nations. Although developed countries leverage advanced technologies for efficient waste management, developing nations like India face economic, infrastructural, and technological constraints in implementing smart city initiatives. Integrating the Internet of Things (IoT) in Smart Waste Management (SWM) has emerged as a promising solution to address inefficiencies such as irregular waste collection, overflowing bins, and environmental pollution. This review consolidates existing IoT-enabled SWM solutions, focusing on their applicability in the Indian context. It examines technological components, including hardware and software frameworks, and evaluates the barriers hindering widespread adoption, such as financial limitations, policy gaps, and technical challenges. Furthermore, this study proposes strategic mitigation measures to overcome these challenges, aiming to enhance the effectiveness of IoT-driven waste management solutions. By providing a structured analysis of the existing systems and their limitations, this review contributes to a deeper understanding of how IoT can revolutionize waste management practices in developing nations. </p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 4","pages":"2099 - 2118"},"PeriodicalIF":3.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Incentivizing recycling in developing urban cities: design and implementation of a mobile reward app for enhanced participation and sustainability 鼓励发展中城市的回收利用：设计和实施一个移动奖励应用程序，以提高参与度和可持续性

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-05-06 DOI: 10.1007/s10163-025-02239-y

Ibrahim Mugerwa, Jianxin Chen, Ernest Paul Kachule, Orashida Nakanwagi

{"title":"Incentivizing recycling in developing urban cities: design and implementation of a mobile reward app for enhanced participation and sustainability","authors":"Ibrahim Mugerwa, Jianxin Chen, Ernest Paul Kachule, Orashida Nakanwagi","doi":"10.1007/s10163-025-02239-y","DOIUrl":"10.1007/s10163-025-02239-y","url":null,"abstract":"<div><p>To address waste management issues in developing cities, this study examines a mobile app-based rewards system to boost recycling efforts in Kampala, Uganda. Implemented with support from the Kampala Capital City Authority (KCCA), this study uses participatory Design. This user-friendly app integrates informal waste collectors essential to the city’s waste management process. Chi-Square analysis found no significant link between smartphone ownership and willingness to use the app (χ<sup>2</sup>(1) = 0.093, <i>p</i> = 0.761). However, there was a significant association between comfort with technology and recycling participation (χ<sup>2</sup>(1) = 15.889, <i>p</i> < 0.001); users more comfortable with technology were also more likely to recycle. Incentive preferences such as discounts or vouchers are significantly tied to the preferred frequency of rewards (χ<sup>2</sup>(6, <i>N</i> = 500) = 99.54, <i>p</i> < 0.001), indicating that tailored incentives could lead to higher engagement. These findings suggest that while smartphone access is widespread, user motivation and technological comfort significantly impact the adoption of mobile recycling solutions. This study provides valuable insights for designing incentive-based, user-friendly systems supporting sustainable urban waste management.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 4","pages":"2370 - 2394"},"PeriodicalIF":3.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recovery of metallic gold, silver and copper from end-of-life mobile phones by hydrometallurgy 用湿法冶金法从废旧手机中回收金属金、银和铜

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-05-06 DOI: 10.1007/s10163-025-02240-5

Massimiliana Pietrantonio, Stefano Pucciarmati, Federica Forte, Doina De Angelis, Danilo Fontana

{"title":"Recovery of metallic gold, silver and copper from end-of-life mobile phones by hydrometallurgy","authors":"Massimiliana Pietrantonio, Stefano Pucciarmati, Federica Forte, Doina De Angelis, Danilo Fontana","doi":"10.1007/s10163-025-02240-5","DOIUrl":"10.1007/s10163-025-02240-5","url":null,"abstract":"<div><p>The global amount of end-of-life mobile phones is increasing over the years and their proper valorization is nowadays of strategic importance. Mobile phones can be considered as an important source of valuable materials, such as metals, plastics, and glass, which can be recovered and reintroduced into new production cycles. In this paper, a recovery process based on selective materials’ separation and hydrometallurgy was proposed. After manual dismantling followed by the separation of the different fractions (plastic, metallic fraction, printed circuit boards, batteries, displays and glass), a hydrometallurgical process based on leaching and precipitation/reduction was applied on printed circuit boards with the aim of recovering the metals of interests. Tin was precipitated from an aqua regia leachate with gaseous ammonia and gold was afterward recovered as metallic gold by reduction with sodium borohydride; silver was first precipitated as silver chloride from a nitric acid leachate and then reduced to metallic silver. Copper was selectively precipitated with oxalic acid from the solution coming from silver recovery and then recovered as metallic copper by means of a mild thermal treatment, without chemicals addition. The developed process allowed the recovery of gold, silver and copper in metallic form with yield and purity grade ≥ 98%.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 4","pages":"2395 - 2403"},"PeriodicalIF":3.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-025-02240-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research progress on methods, mechanisms, and applications of activated carbon preparation from waste plastics by pyrolysis 废塑料热解制备活性炭的方法、机理及应用研究进展

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-05-05 DOI: 10.1007/s10163-025-02244-1

Liangjie Li, Wenting Fu, Yufan Liu, Fang Gou, Yue Gao, Zhilin Xing

{"title":"Research progress on methods, mechanisms, and applications of activated carbon preparation from waste plastics by pyrolysis","authors":"Liangjie Li, Wenting Fu, Yufan Liu, Fang Gou, Yue Gao, Zhilin Xing","doi":"10.1007/s10163-025-02244-1","DOIUrl":"10.1007/s10163-025-02244-1","url":null,"abstract":"<div><p>The massive production of waste plastics and severe environmental pollution make effective treatment and utilization of waste plastics urgent. Converting waste plastics into activated carbon not only addresses environmental issues but also provides economic benefits. This study reviewed methods and applications of preparing activated carbon from waste plastics, introducing their classification and characteristics. Various factors affecting the performance of activated carbon were discussed, with KOH identified as the best activator, achieving a specific surface area of 2712 m<sup>2</sup>/g. Efficient technologies like catalytic and microwave pyrolysis were highlighted. Applications of activated carbon in wastewater treatment, catalytic materials, waste gas treatment, and battery electrodes were analyzed, showcasing its capability to adsorb organic pollutants and heavy metals, with CO<sub>2</sub> adsorption up to 8.93 mmol/g. Finally, challenges and future directions were summarized, focusing on improving activation efficiency, reducing energy consumption, and expanding application fields.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 4","pages":"2054 - 2075"},"PeriodicalIF":3.0,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing waste pre-collection model in Indonesian communities: comparing drop-off and door-to-door models through social cost–benefit analysis 印尼社区垃圾预收集模式的优化：通过社会成本效益分析，比较丢送和上门模式

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-05-04 DOI: 10.1007/s10163-025-02234-3

Machmuddin Fitra Miftahadi, Kohei Hibino, Indriyani Rachman, Toru Matsumoto

{"title":"Optimizing waste pre-collection model in Indonesian communities: comparing drop-off and door-to-door models through social cost–benefit analysis","authors":"Machmuddin Fitra Miftahadi, Kohei Hibino, Indriyani Rachman, Toru Matsumoto","doi":"10.1007/s10163-025-02234-3","DOIUrl":"10.1007/s10163-025-02234-3","url":null,"abstract":"<div><p>Indonesia lacks an established waste pre-collection system resulting 90% waste ending up in open-dumping site. This study identifies a 35-m radius per drop-off points as the most optimal model. The City of South Tangerang, on 21 residential areas with a population of 63,157, being examine. Utilizing ArcGIS Pro and Python scripting, 12 scenarios were developed, model drop-off radii of 15–45 m and household limits of 4–32 per drop-off point, including combined models. Spatial clustering KD-Tree algorithm and Proximity-based Routing were employed to determine collection placements and walking distances. Heatmap and ANOVA tests evaluated conformity with residential characteristics. Model then organized into eight frequency schemes, utilizing motorcart and handcart systems with 4-day and 2-day pickup schedules for waste bank and in-house compost programs. This optimized model reduces collection time by up to 81% and costs by 50% compared to traditional door-to-door systems, achieving cost reductions of $30–$38 USD per ton and lowering CO₂ emissions. The discussion covers opportunity costs and occupational risk. This approach supports Indonesia’s waste reduction targets and offers policy alignment for urban waste management. </p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 4","pages":"2286 - 2302"},"PeriodicalIF":3.0,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioconversion of concentrated yeast wastewater and rice husks into bio-organic fertilizer via a one-time inoculation and composting 浓缩酵母废水和稻壳通过一次接种和堆肥转化为生物有机肥

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-05-01 DOI: 10.1007/s10163-025-02236-1

Aojie Tan, Xingyue Liao, Zhichen Li, Dandan Sun, Xuan Tu, Liwei Ren, Shiping Liu, Wennian Xu

{"title":"Bioconversion of concentrated yeast wastewater and rice husks into bio-organic fertilizer via a one-time inoculation and composting","authors":"Aojie Tan, Xingyue Liao, Zhichen Li, Dandan Sun, Xuan Tu, Liwei Ren, Shiping Liu, Wennian Xu","doi":"10.1007/s10163-025-02236-1","DOIUrl":"10.1007/s10163-025-02236-1","url":null,"abstract":"<div><p>Yeast fermentation generates a large volume of wastewaters containing high levels of organic materials, so nanofiltration and distillation have been effectively used for the treatment of the effluent and the recycle of separated and cleaned water in industry. To further manage and utilize the remanent concentrate of yeast wastewater, a thermophilic bacterium simultaneously with the functions of cellulose degradation, nitrogen fixation and phosphorus and potassium solubilization was screened out and inoculated into the compost of concentrated yeast wastewater and rice husks. According to various parameter measurements, the inoculation promoted the temperature rise (> 60 °C), the composting maturity (C/N ratio < 15, E<sub>4</sub>/E<sub>6</sub> value < 4 and seed germination index > 80% within 35 days) and the nutrient status (the increased contents of humus, total nitrogen, available phosphorus and available potassium all > 20% compared with uninoculated composting piles). Microbial community analyses showed that Bacillaceae, Fodinicurvataceae, Trueperaceae and Flavobacteriaceae had replaced indigenous enteric bacteria and composed the new dominant families. Meanwhile, the inoculation endowed composting products with enough viable microbial counts (> 5.0 × 10<sup>8</sup> cfu/g) and profitably biochemical properties. These findings provided a strategy for using refractory organic wastes to produce bio-organic fertilizer via a one-time inoculation and composting.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 4","pages":"2341 - 2351"},"PeriodicalIF":3.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancement of compressive strength in geopolymers: a study on fly ash characteristics and solid activation using dry method 提高地聚合物抗压强度：粉煤灰特性及干法固体活化研究

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-04-30 DOI: 10.1007/s10163-025-02233-4

Okti Ulandari, Vincent Sutresno Hadi Sujoto, Widi Astuti, Ferian Anggara, Himawan Tri Bayu Murti Petrus, Agus Prasetya

{"title":"Enhancement of compressive strength in geopolymers: a study on fly ash characteristics and solid activation using dry method","authors":"Okti Ulandari, Vincent Sutresno Hadi Sujoto, Widi Astuti, Ferian Anggara, Himawan Tri Bayu Murti Petrus, Agus Prasetya","doi":"10.1007/s10163-025-02233-4","DOIUrl":"10.1007/s10163-025-02233-4","url":null,"abstract":"<div><p>Geopolymers are manufactured using the dry method with fly ash sourced from the Pacitan power plant in East Java (class C) and the Muara Enim Power Plant in South Sumatra (class F). The process begins with preparing the fly ash, followed by solid activators from NaOH and fly ash calcined at 400, 500, and 650 °C to create a geopolymer paste. Compressive strength analysis evaluates the mechanical properties of the geopolymers, with functional group analysis conducted using FTIR. The optimum conditions for the solid activator were found at a calcination temperature of 500 °C, yielding sodium silica (Na<sub>2</sub>SiO<sub>3</sub>) compositions of 39% for Pacitan and 39.5% for Muara Enim fly ash. The geopolymer from Pacitan power plant achieved a maximum compressive strength of 16.0 MPa with an alkaline concentration of 8.33 M. In comparison, Muara Enim’s geopolymer reached 0.2 MPa at 2.94 M. This study is novel in exploring the use of calcination to produce solid activators as an alternative to liquid activators, reducing cost and complexity in the production of geopolymers. Pacitan fly ash exhibited a higher amorphous phase (66.43%) and CaO content (15.288%), enhancing mechanical strength due to its self-cementing properties and increased reactivity. </p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 4","pages":"2303 - 2320"},"PeriodicalIF":3.0,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0