Waste management最新文献

{"title":"Valorizing copper-contaminated manure into biochar for tetracycline adsorption: Dynamics and interactions of tetracycline adsorption and copper leaching","authors":"Haoxiang Xiong ,&nbsp;Xiaojing Zhao ,&nbsp;Kai Song ,&nbsp;Di Gao ,&nbsp;Zengling Yang ,&nbsp;Lujia Han","doi":"10.1016/j.wasman.2025.114880","DOIUrl":"10.1016/j.wasman.2025.114880","url":null,"abstract":"<div><div>Valorizing animal manure into biochar for antibiotic removal from farm wastewater represents a “waste-to-waste” recycling approach for farms. The novelty of this study lies in systematically elucidating the dynamics and interactions of tetracycline adsorption and copper leaching under a laboratory-simulated scenario of treating tetracycline (TC)-contaminated farm wastewater treatment using heavy metal-contaminated biochar. In this study, the biochar was produced from cow manure through pyrolysis at 800 °C, with varying amounts of CuCl₂ to simulate heavy metal-contaminated cow manure. A series of lab physiochemical measurements, including isothermal, kinetic, and thermodynamic experiments, were conducted to characterize the patterns of TC adsorption, Cu leaching, and their interactions. The results showed that Cu improved TC adsorption capacity by facilitating the diffusion of TC into the interior of the biochar. The observed phenomena of rapid absorption and desorption of TC in the first hour of adsorption dynamics could be caused by interactive surface site competition. The molecular dynamic simulation results using Materials Studio indicated that exogenous Cu decreased the average interaction energy between TC and biochar from −2.07 eV to −1.57 eV, further supporting the aforementioned findings. The revealed complex interaction mechanism between Cu and TC advances our understanding of the removal of organic pollutants from farm wastewater using biochar derived from animal manure.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114880"},"PeriodicalIF":7.1,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Computational-fluid-dynamics simulation of nitrogen oxide emission in a vertical-type waste incinerator under oxyfuel- and air-combustion conditions","authors":"Ahmed Abd Alraheem Suliman Esaa ,&nbsp;In-Hee Hwang ,&nbsp;Yuki Ogaya ,&nbsp;Takeshi Yamauchi ,&nbsp;Yasumasa Tojo","doi":"10.1016/j.wasman.2025.114860","DOIUrl":"10.1016/j.wasman.2025.114860","url":null,"abstract":"<div><div>Oxyfuel combustion can significantly enhance carbon capture; however, its effects on NO_X emissions are not yet fully understood in municipal solid waste (MSW) incineration. In this study, NO_X generation in a vertical-type waste incinerator under air- and oxyfuel-combustion conditions was investigated using a combined experimental and computational-fluid-dynamics (CFD) modeling approach. Pyrolysis and combustion experiments were conducted using refuse-derived fuel (RDF) to determine NO_X precursors. Thermogravimetric analysis (TGA) was employed to quantify the thermal degradation behavior and determine the kinetic parameters of RDF and char. Gas chromatography analysis identified NH₃ and HCN as the dominant NO_X precursors, which were subsequently used in modeling NO_X formation. The Kilpinen-97 reaction mechanism was implemented in COMSOL Multiphysics to simulate NO_X formation in a zero-dimensional (0D) waste bed model and a two-dimensional (2D) combustion and recombustion chamber model. The results revealed that oxyfuel combustion significantly reduced NO_X emissions by 12% compared to air combustion. This reduction was primarily attributed to the higher CO concentration under oxyfuel conditions, which enhanced NO_X reduction through radical-driven reactions. Moreover, the 2D CFD model predicted lower NO_X emissions than the 0D model, highlighting the impact of carbon dioxide’s physical properties on the flue gas mixing quality. Overall, these findings emphasize the potential of oxyfuel combustion to reduce NO_X emissions and promote carbon capture in waste-to-energy plants, thus presenting a promising pathway toward more sustainable waste management.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114860"},"PeriodicalIF":7.1,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Fabrication of high-performance glass-ceramics from blast furnace slag and coal fly ash","authors":"Kai-Qi Cao,&nbsp;Guo-Hua Zhang","doi":"10.1016/j.wasman.2025.114866","DOIUrl":"10.1016/j.wasman.2025.114866","url":null,"abstract":"<div><div>Glass-ceramics were prepared through the powder sintering method by directly using blast furnace slag and coal fly ash (CFA), both of which are glassy state dominated. Due to the high basicity and fast crystallization characteristic of the blast furnace slag which could hinder sintering densification, the high energy ball milling treatment of blast furnace slag together with CFA (ultra-low basicity waste) was conducted to refine the particle size and achieve a “cold adjusting” effect, thereby promoting the sintering ability of the blast furnace slag. The effects of CFA addition content, particle size of raw materials and sintering temperature on sintering behavior, crystalline phase, micro-structure and mechanical properties of as-prepared glass-ceramics were investigated. Results showed that the addition of CFA facilitated the densification of blast furnace slag during sintering process. The densification degree and flexural strength increased with the increase in the proportion of CFA addition, reaching the highest values when the addition ratio was 50 %. Meanwhile, the flexural strength first increased with the rise in sintering temperature and then experienced a slight decrease at 1000 °C. When the CFA addition ratio was 50 % and the sintering temperature was 950 °C, the flexural strength of sintered samples reached 168.95 MPa, with an acid resistance of 96.86 % and an alkali resistance of 98.99 %.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114866"},"PeriodicalIF":7.1,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Exposure of black soldier fly larvae to microplastics of various sizes and shapes: Ingestion and egestion dynamics and kinetics","authors":"Christelle Planche ,&nbsp;Siebe Lievens ,&nbsp;Tom Van der Donck ,&nbsp;Jason Sicard ,&nbsp;Mik Van Der Borght","doi":"10.1016/j.wasman.2025.114852","DOIUrl":"10.1016/j.wasman.2025.114852","url":null,"abstract":"<div><div>Black soldier fly (BSF, <em>Hermetia illucens</em>) larvae can valorize food waste into high-valuable products including animal feed. However, these wastes may contain microplastics originating from food packaging, potentially compromising larval growth and their safety as feed. This study investigates the impact of microplastic sizes and shapes on their ingestion and egestion by BSF larvae during waste bioconversion. BSF larvae were reared for 10 days on artificial food waste spiked with three size ranges of spherical or irregularly shaped fluorescent polyethylene microplastics. Daily, several larvae were dissected (<em>n</em> = 9 per treatment) to isolate their gut and to finally determine the number of particles in their alimentary canal using a fluorescence microscope. The microplastics had no impact on larval growth and no bioaccumulation of microplastics was observed in the larval gut (bioaccumulation factors &lt; 0.3). However, there was a significant difference in the ingestion rate based on the different particle sizes. While almost no particles exceeding 100 µm were ingested by the larvae, a steady increase in microplastics was observed in the larval gut for the smaller particles. However, a three-day starvation period reduced the number of microplastics in the larval gut by over 90 %. No significant difference was observed between spherical and irregularly shaped microplastics in terms of larval bioaccumulation. We proposed a kinetic model for representing the temporal dynamics of microplastics accumulation and elimination with respect to particle distribution parameters, enabling the results obtained in this study to be extrapolated to other microplastic sizes.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114852"},"PeriodicalIF":7.1,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Parameter study of a ballistic separator in waste treatment for optimized mechanical processing and improved recovery of valuable materials from mixed commercial waste","authors":"T. Lasch ,&nbsp;M.J. Enengel ,&nbsp;L. Kandlbauer ,&nbsp;K. Khodier ,&nbsp;R. Pomberger ,&nbsp;R. Sarc","doi":"10.1016/j.wasman.2025.114864","DOIUrl":"10.1016/j.wasman.2025.114864","url":null,"abstract":"<div><div>Industry-scale experiments have to be performed to investigate the challenges of processing mixed waste, for example, to identify potential improvements in machines and to optimize waste treatment plants. Conducting such experiments involves a high level of experimental effort, e.g. caused by the inhomogeneity of mixed waste. A parameter study of a ballistic separator is performed, to discuss the influencing machine factors on the material and to uncover optimization potential. Therefore, a methodical experimental plan is developed, to provide representative and meaningful results keeping the effort to a minimum. Due to data distortion caused by the inhomogeneity of the input material, a material batch is used in this study, representing the heterogeneity of the material but keeping the material-specific influence factor to a minimum. In total 22 test runs are carried out in randomized order. The selected models, based on the responses of the data gained, provide significant results regarding the separation behavior of a ballistic separator, since all <span><math><mi>p</mi></math></span>-values (&lt; 0.0001) are below the threshold (<span><math><mrow><mo>∝</mo><mo>=</mo></mrow></math></span> 0.1). Considering the factors paddle angle, paddle speed and air supply, each has an influence on the separation into 3D and 2D material stream. A Pareto front is shown to achieve the optimum setting for the respective yield and purity. For example, good purity (&gt; 93 %) can be achieved by setting the factors paddle angle between 53–71 %, paddle speed over 83 %, and air supply to a maximum, resulting in a lower yield (&lt; 30 %).</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114864"},"PeriodicalIF":7.1,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Physicochemical properties of carbon-based materials enhance in situ biomethanation performances under organic overload","authors":"M. Mahieux ,&nbsp;L. Braga Nan ,&nbsp;M. Zbair ,&nbsp;Q. Aemig ,&nbsp;C. Richard ,&nbsp;J-P. Delgenès ,&nbsp;M. Juge ,&nbsp;S. Bennici ,&nbsp;L. Limousy ,&nbsp;E. Trably ,&nbsp;R. Escudié","doi":"10.1016/j.wasman.2025.114869","DOIUrl":"10.1016/j.wasman.2025.114869","url":null,"abstract":"<div><div>Carbon-based materials gained attention for their potential to improve anaerobic digestion (AD) performance. Meanwhile, <em>in situ</em> biomethanation, where external H₂ is injected into the AD process to enhance the CH₄ content in biogas, is more subjected to process inhibition than AD while facing sudden changes in operational parameters. This study explored the effects of carbon-based materials on a semi-continuous <em>in situ</em> biomethanation process performance and stability. Two biochars and one granular activated carbon were tested at a concentration of 10 g·L^-1. The experiment was conducted in three phases: a one-week start-up phase in AD conditions, an 8-week phase of <em>in situ</em> biomethanation, reaching a steady state, and a 2-week overload phase performed to create instability during the <em>in situ</em> biomethanation process. All additives significantly mitigated process failure under overload conditions, with CH₄ production reaching 117 ± 16 <em>vs</em> 160 ± 16 NmL CH₄·d^-1 on the first week of organic overload (control <em>vs</em> average of all supplemented conditions). Specifically, the use of GAC-BC, with the highest surface area, pore volume, and diameter, led to a tenfold increase in CH₄ production compared to the control in the overload phase. This improvement was associated with higher archaeal diversity and dominance of the <em>Bacteroidales</em> class. Conversely, the biochars, with lower surface properties, did not enhance microbial growth or improve final VFA consumption, resulting in final VFA concentrations similar to the control (11<!--> <!-->g<!--> <!-->COD·L^-1). These findings highlight the importance of surface properties in additives for mitigating VFA accumulation under stressed conditions during <em>in situ</em> biomethanation.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114869"},"PeriodicalIF":7.1,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"The role of digitization: an empirical study on the prediction and impact of changes in waste separation behavior in China","authors":"Lichi Zhang ,&nbsp;Yanyan Jiang ,&nbsp;Junmin Wu","doi":"10.1016/j.wasman.2025.114861","DOIUrl":"10.1016/j.wasman.2025.114861","url":null,"abstract":"<div><div>Digitalization has subtly affected all aspects of people’s lives, including waste separation. This study explores how the role of digitization affects the behavior of mass waste separation, establishes the behavioral role of waste separation in the context of digitization through the theory of planned behavior, further subdivides the role of digitization into digitization practices and digitization quality, and constructs a research model of digitization’s impact on mass waste separation behavior. Structural equation modeling was used to analyze the data and fit the model to the questionnaires of the 611 respondents. The results show that digital practice and digital quality have a positive and significant relationship with waste behavioral intention. In contrast, digital practice has a considerable mediating and chain-mediating effect on the relationship between digital quality and waste separation behavioral intention. These findings provide good theoretical support for the role of digitization in mass waste separation and practical guidance for developing waste separation in the context of digitization.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114861"},"PeriodicalIF":7.1,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143911651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Reducing food waste in media age: How does social media usage affect consumers’ food waste","authors":"Xujin Pu ,&nbsp;Kexu Ma ,&nbsp;Guanghua Han","doi":"10.1016/j.wasman.2025.114857","DOIUrl":"10.1016/j.wasman.2025.114857","url":null,"abstract":"<div><div>The use of social media has the potential to alter consumer habits, possibly resulting in food waste. We conducted an online survey in Shanghai and obtained a dataset of 1024 responses in total. The empirical results confirmed that social media usage contributes to diminishing food waste, whereas compulsive buying may result in food waste. It was observed that materialism mediated the relationship between social media usage and compulsive buying. Compulsive buying mediates the relationship between social media usage and food waste, as well as between materialism and food waste.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114857"},"PeriodicalIF":7.1,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Evaluation of textile industry wastes: Cellulose recovery from cotton/polyester blend shearing waste","authors":"Hüde Elkamel ,&nbsp;Şeyda Taşar ,&nbsp;Neslihan Duranay ,&nbsp;Melek Yılgın","doi":"10.1016/j.wasman.2025.114850","DOIUrl":"10.1016/j.wasman.2025.114850","url":null,"abstract":"<div><div>In this study, the recovery efficiency of cellulose from shearing waste (SW), one of the textile industry wastes consisting of cotton/polyester blends, was investigated. Transforming textile industry wastes into high-value-added secondary products is important in terms of environmental sustainability and waste management. The main purpose of the study presented in this context is to reveal the economic and ecological potential of these wastes and to contribute to the development of a sustainable waste management model.</div><div>Our study was carried out with a three-stage methodology. First, shearing wastes used as raw materials were supplied and characterized. In the second stage, cellulose was recovered using various chemical pretreatments (acid hydrolysis, alkaline hydrolysis, and organosolvent treatment), and the recovery efficiency was calculated. In the third stage, the recovered cellulose fractions were subjected to a detailed characterization process. It was determined that approximately 97% of the cellulose from the wastes could be recovered cumulatively as a result of the process carried out with the combination of the mentioned chemical pretreatments. The recovered cellulose showed varying crystallinity index (65–75%) and thermal stability depending on the process parameters. As a result, it was concluded that textile wastes have the potential to be converted into high-value products. It was revealed that it supports the protection of national natural resources and zero waste policies. In addition, the study tried to present evaluations regarding the complexity and applicability of the methodology and suggestions for improving textile waste management strategies.</div><div>This research includes data and evaluations that can be important in terms of waste management and environmental policies in the textile industry and provide an important reference point. Future studies should focus on optimizing the solvent recovery system and increasing industrial-scale applicability.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114850"},"PeriodicalIF":7.1,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143911652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Synergistic recovery for Al and Ga within high-alumina fly ash by carbochlorination using the response surface method","authors":"Wang Long ,&nbsp;Zhao Xin-xin ,&nbsp;Zhang Zi-mu ,&nbsp;Zhang Ting-An ,&nbsp;Lv Guo-Zhi ,&nbsp;Dou Zhi-He ,&nbsp;Liu Yan ,&nbsp;Fan zhi-yu","doi":"10.1016/j.wasman.2025.114853","DOIUrl":"10.1016/j.wasman.2025.114853","url":null,"abstract":"<div><div>The synergistic extraction of critical elements (Al, Ga) from high-alumina fly ash has gained prominence in addressing resource scarcity and mitigating environmental impacts. This study introduces an efficient carbochlorination approach to overcome the drawbacks of conventional acid/alkali methods, including excessive energy demand and secondary pollution. Response surface method was employed to optimize Al and Ga recovery, identifying optimal parameters: a temperature of 1000℃, a time of 60 min, and a carbon content of 40 wt%, a gas flow rate of 13 L·min⁻¹, and an oxygen content of 10 vol%. Under these conditions, 80.10 % Al and 73.52 % Ga were chlorinated. The quadratic model demonstrate superior performance in predicting both Al and Ga carbochlorination efficiencies (p &lt; 0.0001). Phase characterization revealed that Ga, existing as isomorphic substitutions in aluminosilicate structures, participated in cooperative chlorination reactions with the aluminosilicate matrix. The Al-bearing phase decomposition facilitated Ga release during the phase transformation. This work elucidates the mechanistic for Al-Ga co-recovery from high-alumina fly ash and provides critical insights into the industrial implementation of high-alumina fly ash resource recovery.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114853"},"PeriodicalIF":7.1,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143911958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}