Waste management最新文献

{"title":"Reaction performance of Non-Thermal plasma induced CO2 reforming of CH4 for landfill gas treatment","authors":"Yiping Sun ,&nbsp;Kai Zhang ,&nbsp;Nana Qi ,&nbsp;Cong Chao ,&nbsp;Xianchun Li ,&nbsp;Dongke Zhang","doi":"10.1016/j.wasman.2025.114751","DOIUrl":"10.1016/j.wasman.2025.114751","url":null,"abstract":"<div><div>Non-thermal plasma induced reforming of landfill gas into syngas is an attractive alternative approach to resource recovery from small-scale and variable landfill gas streams. The reaction performance, as indicated by reactant conversion, product yield, and reaction energy intensity, of non-thermal plasma-induced CO₂ reforming of CH₄ has been systematically investigated in a coaxial cylindrical dielectric barrier discharge (DBD) reactor. The reactor surface temperature distribution under varying process parameters is incorporated to investigate its impact on discharge and plasma chemical reaction. It is shown that either an increase in the DBD input power or a reduction in the inlet flow rate leads to greater CH₄ and CO₂ conversions and syngas yield. A higher CO₂ to CH₄ molar ratio improves CH₄ conversion and syngas yield and reduces the generation of C₂ and C₃ hydrocarbons. The CH₄ and CO₂ conversions and H₂ and CO yields reached their maximum values of 44.5 %, 27.4 %, 17.1 %, and 20.2 %, respectively, in this experiment. The O∙ radicals generated during CO₂ splitting are crucial in enhancing CH₄ reforming. The reaction energy intensity, defined as the ratio of the enthalpy change of the desired reactions to the DBD plasma discharge energy, increases effectively with increasing CO₂/CH₄ molar ratio. The response surface methodology (RSM) is employed to explore the interactions among the three key parameters, and the response surface optimization identified optimal conditions of 80 W input power, 80 ml/min inlet flow rate, and a CH₄/CO₂ molar ratio of 1.0:2.5, achieving a reaction energy intensity of 19.3 %.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"200 ","pages":"Article 114751"},"PeriodicalIF":7.1,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679736","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":"Wasting nature’s harvest: Understanding the drivers of household fruit and vegetable waste","authors":"Jayanath Ananda ,&nbsp;Ahangama W.J.C. Abeygunasekera ,&nbsp;David Pearson","doi":"10.1016/j.wasman.2025.02.053","DOIUrl":"10.1016/j.wasman.2025.02.053","url":null,"abstract":"<div><div>Household food waste is an intractable policy issue because of its multi-faceted nature. Fruit and vegetable waste makes up the largest part of household waste. However, behaviours driving consumer fresh produce waste have been less explored. This study analyses behavioural and socio-demographic factors affecting household fruit and vegetable waste in Australia. It uses a nationally representative sample (<em>n</em> = 1462) that completed a 7-day electronic diary recording the amount of fruit and vegetable waste. The findings indicate that, on average, a household discards 35.2 kg of avoidable fruits and vegetables annually. A higher frequency of grocery shopping and purchases of takeaway is associated with higher waste, whilst higher use of a shopping list is associated with lower waste. Older adults, couples and women are more likely to experience a higher incidence of fruit and vegetable wastage at home. These findings are helpful when developing interventions to reduce the waste of fruits and vegetables in households.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"199 ","pages":"Pages 36-46"},"PeriodicalIF":7.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143674129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Modelling anaerobic digestion of agricultural waste: From lab to full scale","authors":"Tatiana Segura ,&nbsp;Paul Zanoni ,&nbsp;Ulysse Brémond ,&nbsp;Constance Lucet--Bérille ,&nbsp;Antoine Pradel ,&nbsp;Renaud Escudié ,&nbsp;Jean-Philippe Steyer","doi":"10.1016/j.wasman.2025.114739","DOIUrl":"10.1016/j.wasman.2025.114739","url":null,"abstract":"<div><div>Biogas production through anaerobic digestion offers a promising alternative to address climate change. In this study, the ADM1 model was used to simulate the digestion of four different substrates: a mixture of rye and maize silage, a mixture of cow slurry and maize silage, cow slurry alone, and food waste. Furthermore, the determination of total solids (TS) content was integrated into the model. Based on experimental data from 5 L Continuous Stirred Tank Reactors (CSTR), ADM1 model parameters were calibrated for each substrate, primarily differing in hydrolysis and inhibition constants. These parameters, along with two additional sets of parameters from the literature, were subsequently applied in simulations to assess methane productivity, yield, and TS under increasing organic loading rates (OLR) for each substrate. Among the substrates, food waste showed the highest productivity, yield, and solids removal, while rye and maize silage substrate was the most unstable, with system failure at the lowest OLR (7 <span><math><mrow><mi>kgVS</mi><msup><mrow><mo>.</mo><mi>m</mi></mrow><mrow><mo>-</mo><mn>3</mn></mrow></msup><msup><mrow><mo>.</mo><mi>d</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></mrow></math></span>) compared to the other substrates. In addition, co-digestion of cow slurry and maize silage showed synergies between maize silage and cow slurry, achieving a productivity of 2.62 <span><math><mrow><mi>N</mi><msup><mrow><mi>m</mi></mrow><mn>3</mn></msup><mo>.</mo><msup><mrow><mi>m</mi></mrow><mrow><mo>-</mo><mn>3</mn></mrow></msup><mo>.</mo><msup><mrow><mi>d</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></mrow></math></span>. Moreover, the parameters determined for rye and maize silage mixture were further used to simulate a full-scale anaerobic digestion unit fed with rye and maize silage as substrate. A difference in volatile fatty acid accumulation was found between the lab- and full-scale systems, suggesting a possible better microbial adaptation to inhibitory factors in the full-scale system. Further investigation into inhibition effects is recommended to improve the predictive accuracy of the ADM1.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"200 ","pages":"Article 114739"},"PeriodicalIF":7.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Sustainable biomass processing: Optimizing energy efficiency through ash waste heat recovery for fuels dewatering","authors":"Taikun Yin ,&nbsp;Xinya Huang ,&nbsp;Yikang Wang ,&nbsp;Chao He ,&nbsp;Liang Liu ,&nbsp;Pengfei Li ,&nbsp;Youzhou Jiao ,&nbsp;Gang Li","doi":"10.1016/j.wasman.2025.114752","DOIUrl":"10.1016/j.wasman.2025.114752","url":null,"abstract":"<div><div>Biomass power generation technologies face challenges in cost competitiveness due to high energy consumption during dewatering. Utilizing waste heat for fuel dewatering is a viable solution to reduce energy consumption and improve efficiency. Herein, spherical heat carrier (SHC) was prepared by encapsulating sand using metal spherical shell, providing a low cost and efficient means for transferring ash heat to dewater biomass. The effects of temperature of heat source (ash or SHC), mixing mass ratio, loading of sand and moisture content of biomass on the recovery and utilization of ash waste heat, and dewatering effect of biomass were optimized by using response surface method. As results, ash temperature and mass ratio were the main factors affecting heat recovery rate and the effective heat transfer coefficient in the heat exchange between SHCs and ash, while SHC temperature and moisture content were the main factors of dehydration rate and the effective heat transfer coefficient in the peanut shells dewatering. The optimal overall thermal efficiency of the continuous process was 36% and the specific energy consumption was 2.13 kWh·kg_water⁻¹. This work provided a technically feasible and efficient way for biomass ash waste heat utilization and biomass fuel dewatering.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"200 ","pages":"Article 114752"},"PeriodicalIF":7.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642158","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":"Enhancing operational efficiency in a voluntary recycling project through data-driven waste collection optimization","authors":"Sanyapong Petchrompo ,&nbsp;Rasita Chitniyom ,&nbsp;Naplaifa Peerwantanagul ,&nbsp;Wasakorn Laesanklang ,&nbsp;Jirachaya Suwanapong ,&nbsp;Shuleeporn Borrisuttanakul","doi":"10.1016/j.wasman.2025.114741","DOIUrl":"10.1016/j.wasman.2025.114741","url":null,"abstract":"<div><div>Recycling in developing countries is often driven by voluntary initiatives, typically led by the private sector. While commendable, these efforts face significant challenges, particularly in ensuring operational efficiency due to their non-profit nature. The logistics process involves collecting recyclable plastics from collection points and delivering them to a recycling facility. This aspect is crucial, as it represents the largest cost component, making optimization essential. Traditional approaches, such as the Traveling Salesman Problem and its meta-heuristic variants, are time-consuming for practical applications. To address these challenges, we propose a three-step data-driven approach designed to optimize waste collection within the constraints of non-profit projects. The first step uses K-means clustering to group collection points geographically, reducing the complexity of subsequent optimization stages. The optimization models in the second and third steps aim to maximize the amount of recyclable plastic per trip and determine the most efficient collection route. Real-time data on waste volume at each point and live traffic conditions, retrieved via the Intelligent Traffic Information Center, are integrated into these models, making it possible to achieve a high level of practicality and accuracy. The efficacy of this approach is demonstrated through a case study of the Won Project, involving 152 plastic waste collection points. The results show a significant daily increase in the average amount of plastic collected and reduction in the average distance traveled. The proposed method can produce prompt, reliable solutions for daily operations using open-source software, successfully addressing the challenges of voluntary waste collection projects.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"200 ","pages":"Article 114741"},"PeriodicalIF":7.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Machine learning-assisted prediction of gas production during co-pyrolysis of biomass and waste plastics","authors":"Quan Bu ,&nbsp;Jianmei Bai ,&nbsp;Bufei Wang ,&nbsp;Leilei Dai ,&nbsp;Hairong Long","doi":"10.1016/j.wasman.2025.114748","DOIUrl":"10.1016/j.wasman.2025.114748","url":null,"abstract":"<div><div>A general method for predicting gas yield is crucial in biomass and plastics co-pyrolysis. This study employed two machine learning methods to forecast gas yield in co-pyrolysis. Comparing the predictive performance of Support Vector Regression (SVR) with an R² of 0.72 and a root mean square error (RMSE) of 0.15, while eXtreme Gradient Boosting (XGBoost) demonstrated a superior performance with an R² of 0.90 and an RMSE of 0.08. Therefore, XGBoost was selected as the final prediction model. Results obtained from the machine learning interpretation tool, SHapley Additive exPlanations (SHAP), revealed that the two most influential factors affecting gas yield were the highest co-pyrolysis temperature (HTT) and the blending ratio (BR), contributing 33% and 28% to the model’s predictions, respectively. Besides, the moisture content in biomass (MB) has been found to be one of the critical variables affecting the gaseous products yield. To determine the interaction between these factors and their contributions to gas yield, SHAP partial dependence analysis (SHAP PDA) was conducted. Therefore, this study offers novel insights into predicting gas yields in biomass and plastics co-pyrolysis, aiding in identifying optimal conditions for maximizing gas yield production.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"200 ","pages":"Article 114748"},"PeriodicalIF":7.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642161","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":"Upcycling textile derived microplastics waste collected from washer and dryers to carbonaceous products using hydrothermal carbonization","authors":"Silvia Parrilla-Lahoz ,&nbsp;Elena Jiménez-Páez ,&nbsp;Mateus G. Masteghin ,&nbsp;Joel J. Pawlak ,&nbsp;Richard A. Venditti ,&nbsp;Robert Bird ,&nbsp;Paul Servin ,&nbsp;Jose Antonio Odriozola ,&nbsp;Tomas Ramirez Reina ,&nbsp;Melis S. Duyar","doi":"10.1016/j.wasman.2025.114740","DOIUrl":"10.1016/j.wasman.2025.114740","url":null,"abstract":"<div><div>Microplastics are an emerging pollutant of concern. Many microplastics in the waters arise from washing synthetic textiles in residential and commercial washing machines. The present research evaluated the upcycling of this waste to carbon materials by hydrothermal carbonization. Real microfiber waste was collected using clothes washer and dryer microfilters. Via temperature and residence time screening (200 °C, 250 °C, 300 °C and 1 h, 4 h, 8 h) two temperatures of interest were determined (250 °C and 300 °C) for hydrothermal carbonization, for a residence time of 4 h. The results obtained in this research demonstrated that by varying the reaction conditions carbon production can be tailored, producing amorphous carbon or graphene/graphite. To this end, Raman spectroscopy results indicated the production of carbon nanomaterials; smaller particle sizes were detected after 250 °C-4h and 300 °C-4h treatments, (29.6 nm and 33.1 nm, respectively). Transforming microfibers into useful carbon nanoparticles via hydrothermal carbonization prolongs their lifecycle and mitigates environmental pollution. This process is an intriguing method of incorporating textile residue (microfibers) into the circular economy, where resources are perpetually recycled, and waste is avoided.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"200 ","pages":"Article 114740"},"PeriodicalIF":7.1,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632208","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":"Recovery of lithium, cobalt and nickel from the spent NMC Li-ion battery by reduction roasting, selective leaching and precipitation","authors":"Asal Shoaei,&nbsp;Sadegh Firoozi","doi":"10.1016/j.wasman.2025.114749","DOIUrl":"10.1016/j.wasman.2025.114749","url":null,"abstract":"<div><div>Valuable elements from the NMC Li-ion battery black mass were recovered by reduction roasting and selective leaching/precipitation. Active materials were separated from the Al/Cu collector foils by thermal treatment and then subjected to reduction roasting by carbon anode in the temperature range of 600–900 °C for 2 h. The progress of the reactions was studied via XRD, TGA-DTA, and thermodynamic modeling. Ni/Co reduction was completed at T ≥ 800 °C and transformation of Li₂CO₃ to Li₂O occurred at 900 °C. Water leaching was employed to separate lithium from roasted products and about 93 % of Li was selectively extracted from the roasted product. Pure Li₂CO₃ was precipitated from the solution by CO₂ injection without purification or the addition of pH modifiers. Mn was then selectively leached from the Li-depleted powder by citric acid. The effect of citric acid concentration, temperature, and time on the leaching efficiency of Mn was studied. About 95 % Mn was removed from the powder at a citric acid concentration of 0.15 M, T = 75 °C, time = 200 min, and S/L = 20 g/L. The activation energy of the Mn dissolution was measured as 15.5 kJ/mol suggesting a diffusional controlled mechanism. A Ni-Co alloy powder was obtained as the final leaching residue. This study provides an effective and practical approach for recycling valuable metals from spent NMC Li-ion batteries.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"200 ","pages":"Article 114749"},"PeriodicalIF":7.1,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637086","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":"Insights into nutrients recovery from food waste liquid Digestate: A critical review and systematic analysis","authors":"Diana Victoria Arellano-Yasaca ,&nbsp;Chen-Yeon Chu","doi":"10.1016/j.wasman.2025.114743","DOIUrl":"10.1016/j.wasman.2025.114743","url":null,"abstract":"<div><div>This review paper presents a critical analysis of global research on the liquid fraction of food waste (FW) digestate. The study found that research on FW liquid fraction management accounted for 43% of the literature, followed by treatment methods (26%) and physical–chemical characterization (22%). By 2023, China led in scientific production on FW liquid fraction, contributing 46%, followed by Poland with 10% and the USA with 8%. The review emphasizes current technologies for nutrient recovery from the liquid fraction, as well as practical implications and limitations, identifying gaps in the literature. The most used methods for nutrient recovery were biofertilizer production from microalgae and membrane technologies. However, there is a need for further research on nutrient value, circular economy integration, the impact of food additives, ecological problems associated with FW decomposition, pathogen breeding, harmonized legislation to support recovered fertilizer commercialization and innovative nutrient recovery technologies. This approach provides valuable insights for stakeholders, enabling the creation of effective strategies that promote sustainable agricultural practices and circular economy initiatives through nutrient recovery from FW digestate.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"200 ","pages":"Article 114743"},"PeriodicalIF":7.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628370","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":"Competitive adsorption and diffusion of methane and vapor-phase per- and polyfluoroalkyl substances in montmorillonite nano pores: Environmental implications","authors":"Rui Xu ,&nbsp;Qiao Wang ,&nbsp;Fusheng Zha ,&nbsp;Jiawei Wu ,&nbsp;Bokade Mrunal Sunil Shobha ,&nbsp;Devendra Narain Singh","doi":"10.1016/j.wasman.2025.114746","DOIUrl":"10.1016/j.wasman.2025.114746","url":null,"abstract":"<div><div>Vapor-phase perfluoroalkyl and polyfluoroalkyl substances (PFASs), along with methane emissions from landfills has been key contributors of their atmospheric transport and global distribution. Given the persistence, bioaccumulation, and potential health risks associated with PFAS, understanding their transport behavior in landfill gas barrier is of paramount importance. To gain a deeper understanding of the adsorption and diffusion behavior of vapor-phase PFAS in unsaturated, montmorillonite-rich clay barriers, a molecular dynamics simulation was conducted. A 5-nm montmorillonite nanopore incorporating vapor-phase PFAS (Fluorotelomer alcohol, FTOH), methane, and water molecules was modeled considering the interactions between these species. The results indicate that the presence of methane within the montmorillonite system inhibits the diffusion of both water and FTOH. Additionally, methane competes with FTOH for sorption sites, particularly at low moisture content. At 5 % moisture content, the adsorption density peak of methane is 1.5 times greater than that of FTOH due to stronger van der Waals interactions between methane and montmorillonite. However, as moisture content increases, methane adsorption weakens and becomes more dispersed within the montmorillonite pores. In contrast, FTOH retains a distinct adsorption region at 20 % moisture content, exhibiting a density peak of 0.025 g/cm³ that shifts farther from the montmorillonite surface. At high moisture content, FTOH aggregates due to the hydrophobicity of its C-F tail. These findings provide critical insights into the environmental behavior of volatile PFASs and have important implications for the design and optimization of landfill gas barriers.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"200 ","pages":"Article 114746"},"PeriodicalIF":7.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621393","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}