Waste management最新文献_第4页

Landfill depths alter microbial community structure and ecological assembly by affecting δ13C and organic matter 填埋深度通过影响δ13C和有机质改变微生物群落结构和生态组合

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-13 DOI: 10.1016/j.wasman.2025.114881

Yu-Xin Wang , Qing-Yu Liu , Jun-Yan Du , Hao-Qun Sha , Jing Su , Yue Sun , Jing-Ying Mao , Xiao-Song He

{"title":"Landfill depths alter microbial community structure and ecological assembly by affecting δ13C and organic matter","authors":"Yu-Xin Wang , Qing-Yu Liu , Jun-Yan Du , Hao-Qun Sha , Jing Su , Yue Sun , Jing-Ying Mao , Xiao-Song He","doi":"10.1016/j.wasman.2025.114881","DOIUrl":"10.1016/j.wasman.2025.114881","url":null,"abstract":"<div><div>Microorganisms are crucial for the degradation of organic matter during landfill. However, the processes of microbial community assembly and ecological niche in landfill are poorly understood. Here, the mechanisms underlying microbial assembly in landfill were investigated based on neutral theory, niche distribution and network analysis. The results showed that moisture and potassium in the landfilled wastes increased with depth, while organic matter and δ<sup>13</sup>C were significantly higher in the middle layer than in the surface and bottom layers (<em>P</em> < 0.05). The richness and diversity of bacteria were significantly greater in the surface layer compared to the middle and bottom layers (<em>P</em> < 0.05), with moisture content, organic matter, total nitrogen and δ<sup>15</sup>N significantly influencing bacterial community composition. Deterministic processes over stochastic processes were pronounced in the surface layer, with the latter accounting only for 3.8 %. As landfill depth increased, variations in organic matter composition led to a greater influence of stochastic processes (52.7 %), while deterministic processes accounted for only 5.8 %. The niche breadth of abundant taxa was narrower than conditionally rare or abundant taxa, with their distribution primarily regulated by waste δ<sup>13</sup>C (<em>P</em> < 0.05), indicating greater environmental sensitivity. The niche overlap of microbial communities was lower in the surface layer, with the proportion of groups with high niche overlap being 2.69 times and 1.69 times higher in the middle and bottom layers. This study provided the first analysis of microbial niche dynamics across landfill depths, revealing critical interactions between δ<sup>13</sup>C driven organic matter availability and stochastic assembly processes.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114881"},"PeriodicalIF":7.1,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941326","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}

引用次数: 0

Sustainable repurposing of grape marc: Potential for bio-based innovations 葡萄马克的可持续再利用：生物基创新的潜力

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-12 DOI: 10.1016/j.wasman.2025.114871

Luziana Hoxha , Mohammad J. Taherzadeh , Matteo Marangon

{"title":"Sustainable repurposing of grape marc: Potential for bio-based innovations","authors":"Luziana Hoxha , Mohammad J. Taherzadeh , Matteo Marangon","doi":"10.1016/j.wasman.2025.114871","DOIUrl":"10.1016/j.wasman.2025.114871","url":null,"abstract":"<div><div>There is increasing interest in repurposing by-products and residues from agricultural and agri-food industries, supporting environmental, social, and economic sustainability. Wineries and distilleries, an important segment of EU agriculture, generate substantial levels of waste annually with grape marc, a significant by-product of these industries, representing both an environmental challenge and an untapped resource. To achieve the sector’s 2050 zero-waste vision, innovative waste management strategies are crucial. This review aims to explore the potential of grape marc as a natural source of high-value compounds and its conversion into a portfolio of high-value added bio-based products. The review discusses grape marc generation and the associated waste management challenges within the wine and distillery industries. It highlights innovative biological, thermal, and chemical conversion strategies for turning grape marc into high-value products. Additionally, it provides an overview of the main components of grape marc and explores its wide range of alternative applications, with particular emphasis placed on nutraceuticals, functional food and feed, biofuels, biomaterials, and agricultural amendments. In addition, the study highlights the integration of grape marc into a fungal-based biorefinery system, as promising upcycling strategy to drive innovation in the development of bio-based products, enabling a transformative waste-to-resource pathway. The findings support the advancement of innovative and feasible valorization models, contributing to sustainable waste management practices within circular economy framework.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114871"},"PeriodicalIF":7.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934572","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}

引用次数: 0

Chlorine evolution characteristics during lab-scale combustion of MSW pyrolysis char obtained from 200 t/d pyrolysis demonstration plant 200t /d热解示范厂获得的城市生活垃圾热解炭实验室燃烧过程中氯的演化特征

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-12 DOI: 10.1016/j.wasman.2025.114882

Zhaotianyi Zhang , Ao Zhou , Guan Wang , Xinmin Wang , Shuanghui Deng , Songtao Sun , Renhui Ruan , Yongqiang Chen , Yili Zhang , Xuebin Wang

{"title":"Chlorine evolution characteristics during lab-scale combustion of MSW pyrolysis char obtained from 200 t/d pyrolysis demonstration plant","authors":"Zhaotianyi Zhang , Ao Zhou , Guan Wang , Xinmin Wang , Shuanghui Deng , Songtao Sun , Renhui Ruan , Yongqiang Chen , Yili Zhang , Xuebin Wang","doi":"10.1016/j.wasman.2025.114882","DOIUrl":"10.1016/j.wasman.2025.114882","url":null,"abstract":"<div><div>Pyrolysis is an effective method for treating municipal solid waste (MSW). Chlorine in MSW causes the production of dioxins, chlorine gas (Cl<sub>2</sub>), hydrogen chloride (HCl) and some other chlorine-containing compounds, and these chlorine-containing compounds are also very harmful to the environment and human health. This study investigates chlorine evolution during the combustion of chlorine-rich MSW pyrolysis char obtained from a 200 t/d MSW pyrolysis demonstration (DEMO) project under industrial conditions. The speciation and distribution of chlorine within the MSW pyrolysis char were meticulously examined via X-ray fluorescence (XRF) spectroscopy and X-ray photoelectron spectroscopy (XPS) analyses. The results indicate that the pyrolytic char contains 9.28 % chlorine, with 12.83 % as organic chlorine (organic-Cl) and 87.17 % as inorganic chlorine (inorganic-Cl). After combustion, the ash retains 5.65 % chlorine, all in the form of inorganic-Cl. During combustion, organic-Cl is released as HCl gas. Meanwhile, inorganic-Cl is converted to Cl<sub>2</sub> or evaporates as alkali metal chlorides. These chlorides later react with metal oxides to form HCl gas. Thermogravimetry-fourier transform infrared spectroscopy-mass spectrometry (TG-FTIR-MS) analysis indicates that organic-Cl dissociates as C-Cl and releases HCl between 220–320 °C and Cl<sub>2</sub> between 400 °C −550 °C. The microporous structure of MSW pyrolysis char significantly affects its combustion behavior. It facilitates the diffusion of chlorine-containing gases. Increasing pyrolysis temperature and time can reduce the chlorine content of MSW pyrolysis char. These findings provide valuable insights for MSW pyrolysis char reuse.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114882"},"PeriodicalIF":7.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934573","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}

引用次数: 0

Resource efficient metal extraction and silicon wafer recovery from end-of-life monocrystalline solar cells: A chemical and environmental perspective 从报废单晶太阳能电池中提取资源效率高的金属和硅片回收：化学和环境的观点

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-12 DOI: 10.1016/j.wasman.2025.114867

Souradeep De , Rajarshi Bhar , Arijit Pangas , Snehal Mondal , Brajesh Kumar Dubey , Santanu Maity

{"title":"Resource efficient metal extraction and silicon wafer recovery from end-of-life monocrystalline solar cells: A chemical and environmental perspective","authors":"Souradeep De , Rajarshi Bhar , Arijit Pangas , Snehal Mondal , Brajesh Kumar Dubey , Santanu Maity","doi":"10.1016/j.wasman.2025.114867","DOIUrl":"10.1016/j.wasman.2025.114867","url":null,"abstract":"<div><div>With the rapid expansion of photovoltaic technology, managing photovoltaic-solid waste has become a growing challenge. This study presents an efficient process for recovering metals and silicon wafers from end-of-life solar cells, which has significant potential for generating auxiliary sources of revenue for the world economy and mitigating resource depletion risks along with environmental offsets. Following aluminium removal from the back of the solar cells utilizing hydrochloric acid, 99.997 % pure silver extraction was successfully done via chronoamperometric etching with an exceptionally low energy consumption of 0.012 <span><span>kWh.kg</span><svg><path></path></svg></span><sup>−1</sup>, ensuring 98.31 % extraction and 96.75 % recovery efficiency. The passivation layers were removed by hot ortho-phosphoric acid. The p-n junction etching was performed independently, yielding an average recovery of 94.46 % for alkaline etching (5 N purity) and 94.25 % for acidic etching (6 N purity). The environmental impacts of the developed recycling process were evaluated via life cycle assessment. Structural characteristics of reclaimed materials were studied using XRD, EDX and ICP-OES. A cost analysis validated the commercial viability of the process. Significant environmental offset of ∼ 230.80–251.68 kg CO<sub>2</sub> eq. for every 1.0 kg of end-of-life silicon solar cells can be achieved by reducing hazardous waste, reclaiming high-purity materials, and lowering energy demands, reinforcing the circular economy principles in PV recycling.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114867"},"PeriodicalIF":7.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934586","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}

引用次数: 0

Beyond the runway – Quantifying the climate impact of international catering waste 超越跑道——量化国际餐饮垃圾对气候的影响

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-12 DOI: 10.1016/j.wasman.2025.114870

Lois Pennington , Andrew Welfle , Ben Parkes , Alice Larkin

{"title":"Beyond the runway – Quantifying the climate impact of international catering waste","authors":"Lois Pennington , Andrew Welfle , Ben Parkes , Alice Larkin","doi":"10.1016/j.wasman.2025.114870","DOIUrl":"10.1016/j.wasman.2025.114870","url":null,"abstract":"<div><div>International flights generate substantial volumes of waste that pose a unique environmental challenge, as strict biosecurity regulations require it to be disposed of through destructive methods across the world. However, the impact on the world’s climate of managing this waste remains unquantified and largely disregarded in aviation mitigation discussions. This study presents the first analysis of the contribution of cabin waste management to climate change, developing a novel methodology that combines passenger movement data with waste generation factors to quantify volumes, composition, and greenhouse gas emissions of national cabin waste. Applied to the United Kingdom as a case study, our analysis estimates that that approximately 89,000 tonnes of cabin waste entered the UK in 2022. This generated between 10,400 and 40,500 tonnes of CO<sub>2</sub> equivalent due to the mandated disposal in landfill or incineration. This climate impact is driven by regulatory requirements that prevent more sustainable waste treatment methods, and by slow industry innovations. Our model demonstrates that allowing cabin waste to be treated like domestic waste could generate climate benefits of 33,900 tonnes CO<sub>2</sub> equivalent, through material and energy recovery. With aviation movements projected to grow through to 2050, we identify specific actions that could enable more sustainable cabin waste treatment while maintaining high levels of biosecurity. This research provides a replicable framework for other nations to quantify their cabin waste climate impacts, and evidence-based pathways for urgent regulation and operational reform.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114870"},"PeriodicalIF":7.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934574","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}

引用次数: 0

Habit-based interventions for maintaining reduction in disposable cutlery usage: A longitudinal experiment 以习惯为基础的干预维持减少一次性餐具的使用：一项纵向实验

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-12 DOI: 10.1016/j.wasman.2025.114862

Yali Huang , Xiaoling Zhang , Xushan Sheng , Liyin Shen , Kenneth Mei Yee Leung

{"title":"Habit-based interventions for maintaining reduction in disposable cutlery usage: A longitudinal experiment","authors":"Yali Huang , Xiaoling Zhang , Xushan Sheng , Liyin Shen , Kenneth Mei Yee Leung","doi":"10.1016/j.wasman.2025.114862","DOIUrl":"10.1016/j.wasman.2025.114862","url":null,"abstract":"<div><div>Adherence to long-term environmental behaviors is challenging, with unclear mechanisms for success. To address this, the presented study advances environmental behavior research by applying habit formation strategies, previously used in health interventions, to the issue of disposable cutlery usage—a major source of plastic waste. Unlike traditional incentives or nudges, it tests the effectiveness of contextual cues (e.g., reusable cutlery provision) combined with reinforcement techniques like reminders and goal-setting.</div><div>Utilizing a comprehensive dataset from a three-month longitudinal experiment, comprising 20,763 panel observations and employing a marginalized two-part model, we found that both the ‘context & fixed reminder’ and ‘context & random reminder’ interventions significantly reduced disposable cutlery usage by nearly 50%. Implementing this framework across Chinese universities could potentially reduce disposable cutlery usage by 1.22 billion sets and prevent 18.2 million tons of waste per year. In comparison, the ‘context only’ was less effective, highlighting the significance of reinforcement. Notably, the ‘context & goal’ intervention proved more effective in the later stages of the experiment, suggesting that recalling goals can significantly impact behavior over time. Furthermore, we found that the effectiveness of the ‘context & fixed reminder’ intervention was significantly moderated by perceived complexity, whereas the moderation effect was insignificant for the ’context & random reminder’ intervention, emphasizing that reminder frequency should match task complexity to enhance individuals’ engagement—a critical insight previously missing from the literature. Overall, these findings enhance both theoretical understanding and practical applications in habit-based interventions for environmental behavior change and maintenance.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114862"},"PeriodicalIF":7.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934585","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}

引用次数: 0

Towards waste management 5.0: A nexus between circular economy and industry 5.0 dimensions 迈向废物管理5.0：循环经济与工业5.0维度之间的联系

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-10 DOI: 10.1016/j.wasman.2025.114830

Sina Nayeri , Zeinab Sazvar , Erfan Babaee Tirkolaee

引用次数: 0

Migration and transformation of sulfur during pyrolysis of waste tires for high-value utilization of poly-generation products 废轮胎热解过程中硫的迁移转化及多联产产品的高价值利用

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-09 DOI: 10.1016/j.wasman.2025.114868

Guangyang Li , Xiong Zhang , Shenghua Wang , Junjie Zhang , Haiping Yang , Kuo Zeng , Jingai Shao , Shihong Zhang , Hanping Chen

{"title":"Migration and transformation of sulfur during pyrolysis of waste tires for high-value utilization of poly-generation products","authors":"Guangyang Li , Xiong Zhang , Shenghua Wang , Junjie Zhang , Haiping Yang , Kuo Zeng , Jingai Shao , Shihong Zhang , Hanping Chen","doi":"10.1016/j.wasman.2025.114868","DOIUrl":"10.1016/j.wasman.2025.114868","url":null,"abstract":"<div><div>The three-state pyrolysis products of waste tires pyrolysis have high utilization value, and the migration and transformation of sulfur during pyrolysis of waste tires is one of the most important factors affecting product properties. Understanding the mechanism of sulfur migration and conversion during waste tire pyrolysis is necessary for high value utilization of poly-generation products. This work focused on the effects of different factors on product distribution and sulfur transformation during waste tires pyrolysis. The results showed that the migration of sulfur was predominantly attributable to the decomposition, conversion, and migration of aliphatic and thiophene sulfur to pyrolysis oil and gases. The decomposition rate of aliphatic sulfur and thiophene sulfur exhibits a gradual increase with the increase of pyrolysis temperatures and heating rates. However, the decomposition rate of aliphatic sulfur and thiophene sulfur in the recovered carbon black (rCB) exhibited a decline as the particle size of waste tires increased, with retention rates increasing from 12.4% to 16.6% for aliphatic sulfur and from 29.6% to 39.8% for thiophene sulfur. A large number of intermediate products ·SH and ·S radicals were produced, and this process was verified using DFT (Density Functional Theory) calculations. This paper provided a partial knowledge of sulfur migration and transformation in the three-state pyrolysis products during waste tires pyrolysis, which can provide valuable information for high-value utilization of waste tires and control technologies of pollutants emission.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"203 ","pages":"Article 114868"},"PeriodicalIF":7.1,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929314","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}

引用次数: 0

Valorizing copper-contaminated manure into biochar for tetracycline adsorption: Dynamics and interactions of tetracycline adsorption and copper leaching 将受铜污染的粪肥转化为生物炭以吸附四环素：四环素吸附和铜浸出的动力学和相互作用

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-09 DOI: 10.1016/j.wasman.2025.114880

Haoxiang Xiong , Xiaojing Zhao , Kai Song , Di Gao , Zengling Yang , Lujia Han

{"title":"Valorizing copper-contaminated manure into biochar for tetracycline adsorption: Dynamics and interactions of tetracycline adsorption and copper leaching","authors":"Haoxiang Xiong , Xiaojing Zhao , Kai Song , Di Gao , Zengling Yang , 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 CuCl<sub>2</sub> 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}

引用次数: 0

Computational-fluid-dynamics simulation of nitrogen oxide emission in a vertical-type waste incinerator under oxyfuel- and air-combustion conditions 含氧燃料和空气燃烧条件下立式垃圾焚烧炉氮氧化物排放的计算流体动力学模拟

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-05-09 DOI: 10.1016/j.wasman.2025.114860

Ahmed Abd Alraheem Suliman Esaa , In-Hee Hwang , Yuki Ogaya , Takeshi Yamauchi , Yasumasa Tojo

{"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 , In-Hee Hwang , Yuki Ogaya , Takeshi Yamauchi , 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<sub>X</sub> emissions are not yet fully understood in municipal solid waste (MSW) incineration. In this study, NO<sub>X</sub> 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<sub>X</sub> 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 NH<sub>3</sub> and HCN as the dominant NO<sub>X</sub> precursors, which were subsequently used in modeling NO<sub>X</sub> formation. The Kilpinen-97 reaction mechanism was implemented in COMSOL Multiphysics to simulate NO<sub>X</sub> 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<sub>X</sub> emissions by 12% compared to air combustion. This reduction was primarily attributed to the higher CO concentration under oxyfuel conditions, which enhanced NO<sub>X</sub> reduction through radical-driven reactions. Moreover, the 2D CFD model predicted lower NO<sub>X</sub> 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<sub>X</sub> 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}

引用次数: 0