Waste management最新文献_第8页

Dual catalytic system using industrial solid waste and zeolite for enhanced aromatic hydrocarbon conversion from waste bamboo biomass 利用工业固体废物和沸石双催化系统增强废竹生物质芳烃转化。

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management

Pub Date : 2026-01-06 DOI: 10.1016/j.wasman.2026.115342

Jingchao Wei , Bangda Wang , Tongxiao Zhou , Fei Gong , Han Zhang , Quanwei Lv , Ziheng Jin , Shouliang Yi , Xia Jiang

The present study developed a dual-catalyst system combining typical industrial solid waste (i.e. red mud, coal fly ash, blast furnace slag, red gypsum and anode slag) and zeolite in synergistically promoting the catalytic fast pyrolysis (CFP) of waste bamboo biomass for aromatics production. The results demonstrated that industrial solid wastes significantly enhanced deoxygenation and decreased the oxygenated compound content by 2.60 % to 26.26 % compared to non-catalytic pyrolysis. Notably, red gypsum exhibited the most pronounced effect, increasing the content of aromatic precursors, such as hydrocarbons, by 21.82 %. In the dual-catalyst system, the red gypsum/HBeta (H-form Beta zeolite) combination (1:1 ratio) attained a total aromatics relative content of 43.58 % at 550°C, representing a 30.79 % improvement over single HBeta. Moreover, the contents of monocyclic aromatic hydrocarbons (MAHs) and benzene-toluene-xylenes (BTX) increased by 37.27 % and 49.29 %, respectively. The improved aromatics content was primarily attributed to the abundant reactive oxides and hierarchical pore structure within the dual-catalyst CFP (DC-CFP). In the DC-CFP, the mesopores of the industrial solid waste promote the diffusion of macromolecules produced by pyrolysis, while lattice oxygen transfer from Fe₂O₃ (28.29 %) in red gypsum facilitates the cleavage of the C–O, C=O and C–C bond to yield small-molecule precursors. These intermediates then undergo aromatization driven by the acidic sites of the microporous HBeta zeolite, synergistically enhancing aromatics content and offering a novel approach for utilizing industrial solid waste resources and biomass energy.

本研究采用典型工业固体废弃物（赤泥、粉煤灰、高炉渣、红石膏、阳极渣）与沸石相结合的双催化剂体系，协同促进废竹生物质催化快速热解（CFP）生产芳烃。结果表明：与非催化热解相比，工业固体废弃物的脱氧作用显著增强，含氧化合物含量降低2.60% ~ 26.26%；其中，红色石膏的效果最为显著，其芳香族前体化合物（如碳氢化合物）的含量提高了21.82%。在双催化剂体系中，红石膏/HBeta （h型β沸石）组合（1:1比例）在550℃下获得了43.58%的芳烃相对含量，比单一HBeta提高了30.79%。单环芳烃（MAHs）和苯-甲苯-二甲苯（BTX）含量分别增加了37.27%和49.29%。双催化剂CFP （DC-CFP）中丰富的活性氧化物和分层孔结构是提高芳烃含量的主要原因。在DC-CFP中，工业固体废物的介孔促进了热解产生的大分子的扩散，而红石膏中Fe2O3（28.29%）的晶格氧转移促进了C-O、C=O和C-C键的裂解生成小分子前驱体。然后，这些中间体在微孔HBeta沸石的酸性位点驱动下进行芳构化，协同提高芳烃含量，为利用工业固体废物资源和生物质能源提供了一种新的途径。

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引用次数: 0

Earthworm mediated microbial quorum sensing accelerates organic matter transformation during vermicomposting of dewatered sludge 蚯蚓介导的微生物群体感应加速了脱水污泥蚯蚓堆肥过程中有机物的转化。

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management

Pub Date : 2026-01-05 DOI: 10.1016/j.wasman.2026.115332

Jungang Ding , Tianzhen Guo , Hui Xia , Kui Huang , Mingte Li , Fusheng Li

Vermicomposting (VC) relies on the synergistic interaction between earthworms and microorganisms to drive the degradation of organic matter (OM). Quorum sensing (QS), which governs earthworm-microorganism interactions, may influence dissolved organic matter (DOM) transformation during VC. However, the presence of QS and the functional roles of signaling molecules during VC remain unclear. This study investigated earthworm mediated microbial QS in driving microbial community succession and accelerating DOM transformation during VC, by contrasting the process without earthworms. The results showed that VC exhibited a distinct decomposition pathway, achieving significantly faster DOM degradation and mineralization (P < 0.01), compared to the control. Additionally, earthworms markedly facilitated the transformation of protein-like compounds into humic-like substances over a shorter period. Their presence also modified acyl-homoserine lactone (AHL) synthesis patterns and suppressed AHLs hydrolysis, resulting in a 96.14 % increase (P < 0.01) in short-chain AHLs. Metagenomic analysis revealed that earthworm in VC significantly altered the bacterial diversity (P < 0.05), enriching modularity coefficient and deterministic processes by 18.75 % and 87.03 %, respectively. Finally, AHL-responsive microorganisms significantly influencing physicochemical and DOM transformation during the VC. This study suggests that earthworms enhance AHL-type QS regulation in microbial communities, improving their metabolic functions and accelerating DOM transformation.

蚯蚓堆肥依靠蚯蚓和微生物之间的协同作用来驱动有机物（OM）的降解。群体感应（Quorum sensing， QS）控制着蚯蚓与微生物的相互作用，可能会影响VC过程中溶解有机物（DOM）的转化。然而，在VC过程中，QS的存在和信号分子的功能作用尚不清楚。本研究通过对比无蚯蚓的VC过程，探讨了蚯蚓介导的微生物QS在VC过程中驱动微生物群落演替和加速DOM转化的作用。结果表明，VC具有明显的分解途径，DOM的降解和矿化速度显著高于对照（P < 0.01）。此外，蚯蚓在较短的时间内显著促进了蛋白质样化合物向腐殖质样物质的转化。它们的存在还改变了酰基-高丝氨酸内酯（AHL）的合成模式，抑制了AHL的水解，导致短链AHL的数量增加96.14% （P < 0.01）。宏基因组分析显示，蚯蚓显著改变了VC中细菌多样性（P < 0.05），使模块化系数和确定性过程分别增加了18.75%和87.03%。最后，ahl响应微生物显著影响VC过程中的理化和DOM转化。本研究提示蚯蚓增强微生物群落ahl型QS调控，改善微生物代谢功能，加速DOM转化。

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引用次数: 0

Comprehensive and sludge-free treatment of raw landfill leachate wastewaters using electro-peroxone 电-过氧酮综合无污泥处理垃圾渗滤液

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management

Pub Date : 2026-01-03 DOI: 10.1016/j.wasman.2025.115313

Ramya Srinivasan , Anjali Dubey , Indumathi M Nambi

Advanced oxidation processes (AOPs) offer a promising strategy for leachate contaminant removal. In this work, electro-peroxone is evaluated first using humic acid and then applied to raw leachates from American and Indian landfills. Its performance is compared with electrolysis and ozonation using a reticulated vitreous carbon (RVC) cathode, while assessing the effects of current, electrode area, aeration rate, and pH on H₂O₂ generation. Quantification of H₂O₂ and •OH shows that electro-peroxone produces the highest •OH levels, identifying it as the most effective pollution-abatement pathway among the tested processes. It is demonstrated for the first time that the RVC electrode electrochemically generates hydroxyl radicals during electrolysis in an ozone- and catalyst-independent manner, while also producing hydroxyl radicals during electro-peroxone, as confirmed by EPR analysis.

Additionally, electro-peroxone provides a unified treatment approach that simultaneously removes organics, color, microorganisms, TSS, and turbidity. In the case of both the leachates, a total organic carbon (TOC) degradation of about 70–93 %, a turbidity removal of around 80–97 %, and about 85–99.5 % TSS removal in 480 min, 99.4–99.7 % color removal in 240 min, and around 96–99.93 % disinfection in 180 min was attained. The electro-peroxone system also demonstrated a significant reduction in toxicity after treatment. The particle distribution analysis before and after treatment clearly indicated the reduction in particle size and substantiated the reduction in TSS and turbidity, and increase in soluble TOC. Finally, mechanisms for contaminant abatement and the novel phenomenon of particulate organic matter mineralization are proposed, demonstrating electro-peroxone as a sustainable, chemical-free, zero-sludge treatment option for complex landfill leachates.

高级氧化工艺（AOPs）是一种很有前途的去除渗滤液污染物的方法。在这项工作中，电过氧化物酮首先使用腐植酸进行评估，然后将其应用于美国和印度垃圾填埋场的原始渗滤液。将其性能与使用网状玻璃体碳（RVC）阴极的电解和臭氧化进行了比较，同时评估了电流、电极面积、曝气率和pH对H2O2生成的影响。对H2O2和•OH的定量分析表明，电-过氧酮产生的•OH水平最高，是测试过程中最有效的污染减排途径。首次证明了RVC电极在电解过程中以不依赖于臭氧和催化剂的方式产生羟基自由基，同时在电-过氧酮过程中也产生羟基自由基，EPR分析证实了这一点。此外，电-过氧化物酮提供了一种统一的处理方法，同时去除有机物，颜色，微生物，TSS和浊度。在这两种渗滤液中，总有机碳（TOC）降解率约为70 - 93%，浊度去除率约为80 - 97%，TSS去除率约为85 - 99.5%，240 min去色率为99.4 - 99.7%，180 min消毒率约为96 - 99.93%。电-过氧酮系统也显示出治疗后毒性的显著降低。处理前后的颗粒分布分析清楚地表明粒径减小，证实了TSS和浊度的降低，可溶性TOC的增加。最后，提出了污染物减排的机制和颗粒有机物矿化的新现象，证明了电过氧化物酮是一种可持续的、无化学物质的、零污泥处理复杂垃圾渗滤液的选择。

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引用次数: 0

Transforming coal washery rejects into carbon nanomaterials via microwave pyrolysis for waste to value conversion 利用微波热解技术将洗煤厂废弃物转化为纳米碳材料，实现废值转化

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management

Pub Date : 2026-01-02 DOI: 10.1016/j.wasman.2025.115319

Burada Shravani , Navneet Kumar Mishra , Shavi Agrawal , Anurag Shakya , B.Rajasekhar Reddy , Raj Kumar Dishwar

This study presents a sustainable approach for converting coal washery rejects into high-value carbon nanomaterials (CNMs) using microwave-assisted catalytic pyrolysis. Initial characterization of the raw coal tailings revealed a high fixed carbon content (40.27 wt%) and calorific value (20.4 MJ/Kg). Through beneficiation techniques such as froth flotation and oil agglomeration, the carbon content was enhanced to 73.97 – 75.93 wt% with an increased calorific value of 27.2 – 30.7 MJ/Kg. The cleaned coal concentrate was subjected to microwave pyrolysis in the presence of Fe-based catalysts. Under optimized conditions (810 W microwave power, 45 µm catalyst particle size, and 2:1 coal-to-catalyst ratio), the process resulted in a 66.5 % yield of carbon nanomaterials with up to 80 % purity. Varying these parameters influenced the morphology of the synthesized nanomaterials, producing carbon nanotubes with an average length of 1.41 µm and diameter of 80.22 nm. Raman spectroscopy analysis revealed an I_D/I_G ratio ∼ 1 for the optimized samples, indicating a high degree of graphitization, while XRD confirmed the presence of crystalline graphite (0 0 2) planes at 2theta ∼ 26°. These findings demonstrate the feasibility of transforming high-ash coal waste into functional carbon nanostructures via a controlled microwave-heating route.

本研究提出了一种利用微波辅助催化热解将洗煤厂废弃物转化为高价值碳纳米材料（CNMs）的可持续方法。原煤尾矿的初步表征表明，其固定碳含量高（40.27 wt%），热值高（20.4 MJ/Kg）。通过泡沫浮选、油团聚等选矿工艺，使矿石含碳量提高到73.97 ~ 75.93 wt%，发热量提高27.2 ~ 30.7 MJ/Kg。将精煤精矿在铁基催化剂存在下进行微波热解。在优化条件下（810 W微波功率，45µm催化剂粒度，2:1煤催化剂比），该工艺的碳纳米材料收率为66.5%，纯度高达80%。改变这些参数会影响合成的纳米材料的形貌，得到的碳纳米管平均长度为1.41µm，直径为80.22 nm。拉曼光谱分析显示，优化样品的ID/IG比为1，表明石墨化程度高，而XRD证实在2 θ ~ 26°处存在结晶石墨（0 0 2）面。这些发现证明了通过可控微波加热途径将高灰分煤矸石转化为功能碳纳米结构的可行性。

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引用次数: 0

Long-term leachability and stabilization of lead and cadmium co-contaminated soils using hydroxyapatite-modified drinking water treated sludge 羟基磷灰石改性饮用水处理污泥对铅镉共污染土壤的长期浸出性和稳定性研究

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management

Pub Date : 2026-01-02 DOI: 10.1016/j.wasman.2025.115320

Zijun Ye , Haonan Cong , Fei Wang , Benyi Cao

Hydroxyapatite (HAP) modified drinking water treated sludge (DWTS) was developed for the remediation of lead (Pb) and cadmium (Cd) co-contaminated soils, thereby simultaneously achieving the dual objectives of solid waste management and contaminated site remediation. However, long-term leachability and stabilization of Pb and Cd co-contaminated soils under environmental exposure were not very clear. In this work, batch stabilization tests, freeze–thaw cycles, soil column leaching test, and wet-dry cycles were conducted. The results showed that HAP and DWTS mixed at a mass ratio of 2:1 (2H‑DWTS) and applied at 5 % (w/w) with 14 days of incubation stabilized the leaching concentrations of Pb and Cd at 0.05 mg/L and 0.10 mg/L, respectively. 2H‑DWTS stabilized Pb and Cd through dissolution-precipitation, cation exchange, and adsorption/complexation, resulting in the formation of insoluble phosphates, carbonates, and hydroxides. The 2H‑DWTS treated soil showed strong resistance to freeze-thaw‑induced deterioration, with Pb and Cd leaching concentrations increasing by only 0.09 mg/L and 0.03 mg/L, respectively, after 12 cycles. In the soil column leaching tests, 2H‑DWTS reduced the cumulative leaching of Pb and Cd by 28.7 % and 26.5 %, respectively, under CaCl₂ solution, and by 24.6 % and 47.3 %, respectively, under simulated acid rain. Wet-dry cycles combined with CaCl₂/simulated acid rain aging decreased the leaching concentrations in each cycle but led to an increase in the cumulative leaching concentrations. This study not only provides new insights into the management of DWTS but also lays a theoretical foundation for the application of H-DWTS composites in the remediation of Pb and Cd co-contaminated soils.

羟基磷灰石（HAP）改性饮用水处理污泥（DWTS）用于铅镉共污染土壤的修复，从而同时实现固体废物管理和污染场地修复的双重目标。但环境暴露下铅镉共污染土壤的长期淋滤性和稳定性尚不清楚。进行了批量稳定试验、冻融循环试验、土柱淋溶试验和干湿循环试验。结果表明，HAP与DWTS以2:1的质量比（2H - DWTS）混合，以5% （w/w）的剂量施用，培养14 d后，Pb和Cd的浸出浓度分别稳定在0.05 mg/L和0.10 mg/L。2H - DWTS通过溶解沉淀、阳离子交换和吸附/络合作用稳定Pb和Cd，形成不溶性磷酸盐、碳酸盐和氢氧化物。2H - DWTS处理土壤表现出较强的抗冻融劣化能力，经过12个循环后，Pb和Cd浸出浓度分别仅增加0.09 mg/L和0.03 mg/L。在土壤柱淋滤试验中，2H - DWTS在CaCl2溶液下使Pb和Cd的累积淋滤分别减少28.7%和26.5%，在模拟酸雨下分别减少24.6%和47.3%。干湿循环联合CaCl2/模拟酸雨老化使各循环的淋溶浓度降低，但导致累积淋溶浓度升高。本研究不仅为DWTS的治理提供了新的思路，也为H-DWTS复合材料在铅镉共污染土壤修复中的应用奠定了理论基础。

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引用次数: 0

Does human excreta fertilization increase pathogen contamination in sandy soils? 人类排泄物施肥会增加沙质土壤中的病原体污染吗？

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management

Pub Date : 2025-12-30 DOI: 10.1016/j.wasman.2025.115314

Jan-Ole Boness , Timo Kautz , Bärbel Kroschewski , Roland Hoffmann-Bahnsen

The use of human excreta in the context of the circular economy has the potential to recycle nutrients, save water and energy, and sequester carbon. However, the risk of pathogen contamination of soil and crops, particularly from land application of solid human excreta (feces), is a realistic scenario. In our study we investigated a double thermophilically treated and quality assured compost (Hygienized Human Feces Compost). We used indicator organisms for fecal contamination to monitor the risk of pathogen contamination of the soil after application of human feces compost. Indicator organisms were Escherichia coli, Salmonella spp., Enterococcus spp. and Clostridium perfringens. One pot experiment under semi-controlled conditions and three on-farm experiments were conducted on loamy sand and sand soils. The experimental period ranged from 58 to 1123 days. The levels of fecal indicator organisms in soil show a consistent pattern across all experiments. E. coli, Salmonella spp. and Enterococcus spp. were not detected in any of the soil samples. C. perfringens was found in concentrations ranging from <10 to 10³ CFU g⁻¹ FM. However, there was no evidence of a systematic increase in the soil concentrations of C. perfringens following human feces compost application. In different years and under different experimental conditions, we were not able to detect any increase in the concentration of indicator organisms for fecal contamination in our experiments. We therefore assume that sandy soils might be generally suitable for application of quality-assured fertilizers from human excreta.

在循环经济的背景下，利用人类排泄物具有回收养分、节约水和能源以及固碳的潜力。然而，病原体污染土壤和作物的风险，特别是由于固体人类排泄物（粪便）的土地施用，是一个现实的情况。在我们的研究中，我们调查了一种双重嗜热处理和质量保证的堆肥（卫生人类粪便堆肥）。采用粪便污染指示生物法监测施用人粪堆肥后土壤病原菌污染风险。指示生物为大肠杆菌、沙门氏菌、肠球菌和产气荚膜梭菌。在壤土和沙土上进行了1个半控制盆栽试验和3个田间试验。试验期为58 ~ 1123 d。在所有实验中，土壤中粪便指示生物的水平显示出一致的模式。土壤样品中未检出大肠杆菌、沙门氏菌和肠球菌。产气荚膜梭菌的浓度范围为10 ~ 103 CFU g−1 FM。然而，没有证据表明施用人类粪便堆肥后土壤中产气荚膜荚膜梭菌浓度有系统的增加。在不同的年份和不同的实验条件下，我们在实验中没有发现粪便污染指示生物浓度的增加。因此，我们假设沙质土壤可能一般适用于施用有质量保证的人类排泄物肥料。

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引用次数: 0

New model of municipal solid waste incineration fly ash treatment and its comprehensive benefits 城市生活垃圾焚烧飞灰处理新模式及其综合效益

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management

Pub Date : 2025-12-30 DOI: 10.1016/j.wasman.2025.115318

Chujie Qi , Runhao Zhang , Wenxiang Zhou , Tong Zhang , Xueqi Zhang , Jiaxin Bai , Yuqi Zhao , Bo Bian

Municipal solid waste incineration fly ash (MSWI FA), characterized by high concentrations of chlorides, heavy metals, and dioxins, presents significant environmental challenges. This study developed a synergistic washing-hydrothermal oxidation process for safe resource recovery. Optimized three-stage countercurrent washing (L/S ratio of 4 mL/g, 750 rpm, 25 °C, 20 min) yielded 79.86% chloride removal efficiency, meeting the 2% residual chloride threshold. Subsequent hydrothermal treatment (300 °C, 90 min, pH 7.0, L/S ratio of 4 mL/g) enhanced residual metal fractions (Cu: +36.32%, Zn: +40.61%, Cd: +38.81%) versus washed ash, with leached concentrations complying with GB 8978–1996. Dioxin toxicity equivalence was reduced by 99.7% (1.87 μg-TEQ/kg to 5.4 ng-TEQ/kg), far below the 50 ng-TEQ/kg regulatory limit. Life cycle assessment confirmed superior environmental performance over landfilling, particularly in heavy metal emissions and human toxicity mitigation. Risk analysis validated effective leached metal toxicity reduction. Carbon accounting bounded by the resource-based production of ceramic pellets from treated fly ash demonstrates a double offset: substitution of carbon-intensive building materials with enhanced carbon sequestration for net life-cycle carbon reductions. Economic projections indicate USD 363 million revenue potential by 2030. Thus, the synergistic washing-hydrothermal oxidation process developed herein enables efficient dechlorination, heavy metal stabilization, and deep dioxin degradation in MSWI FA. This integrated approach delivers significant environmental, carbon-reduction, and economic benefits, enabling viable fly ash resource utilization.

城市固体废物焚烧飞灰（MSWI FA）的特点是高浓度的氯化物、重金属和二恶英，给环境带来了重大挑战。本研究开发了一种安全回收资源的水洗-水热氧化协同工艺。优化后的三级逆流洗涤（L/S比为4 mL/g， 750 rpm, 25℃，20 min）氯离子去除率为79.86%，达到2%的残留氯离子阈值。随后的水热处理（300°C, 90 min, pH 7.0， L/S比为4 mL/g）比水洗灰提高了残余金属组分（Cu: +36.32%, Zn: +40.61%, Cd: +38.81%），浸出浓度符合GB 8978-1996。二恶英毒性当量降低了99.7% (1.87 μg-TEQ/kg降至5.4 ng-TEQ/kg)，远低于50 ng-TEQ/kg的法规限值。生命周期评估证实，环境绩效优于填埋，特别是在重金属排放和减轻人类毒性方面。风险分析验证了有效降低浸出金属毒性。从处理过的粉煤灰中以资源为基础生产陶瓷颗粒的碳核算表明了双重抵消：用增强碳固存的碳密集型建筑材料替代净生命周期碳减排。经济预测显示，到2030年，收入潜力为3.63亿美元。因此，本文开发的协同洗涤-水热氧化工艺能够在MSWI FA中高效脱氯、稳定重金属和深度二恶英降解。这种综合方法提供了显著的环境、碳减排和经济效益，使可行的粉煤灰资源利用成为可能。

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引用次数: 0

Man made vitreous fibres: legislative and analytical background review 人造玻璃纤维：立法和分析背景审查。

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management

Pub Date : 2025-12-29 DOI: 10.1016/j.wasman.2025.115303

Sergio Malinconico , Giuseppe Bonifazi , Giuseppe Capobianco , Silvia Serranti , Ursula Grunwald-Romera , Sergio Bellagamba , Paolo De Simone , Federica Paglietti

Man-Made Vitreous Fibres (MMVFs) are essential materials for the construction and industrial areas, but their potential health risks and waste management complexities present significant challenges. This review uses the European Union as a case study to analyze the two primary issues: occupational health hazard assessment and waste stream management. We found that despite a mature regulatory framework, a lack of harmonized standards across Europe leads to inconsistencies in worker protection and waste classification. The review highlights the continued dominance of traditional, often slow, analytical methods for fibre identification and risk assessment, which conflicts with the need for rapid, on-site decision-making. We explore the potential of advanced analytical techniques (e.g. HIS, XRF) to overcome these limitations. Furthermore, we conclude that regulatory fragmentation is a major barrier to the circular economy, hindering the effective recycling of MMVF waste. This study underscores the urgent need for updated, standardized European policies to ensure both worker safety and sustainable waste management.

人造玻璃纤维（MMVFs）是建筑和工业领域必不可少的材料，但其潜在的健康风险和废物管理的复杂性带来了重大挑战。本审查以欧洲联盟为个案研究，分析两个主要问题：职业健康危害评估和废物流管理。我们发现，尽管有成熟的监管框架，但整个欧洲缺乏统一的标准，导致工人保护和废物分类不一致。该审查强调了传统的、通常是缓慢的纤维识别和风险评估分析方法继续占主导地位，这与快速、现场决策的需要相冲突。我们探索先进分析技术（如HIS， XRF）的潜力来克服这些限制。此外，我们得出结论，监管碎片化是循环经济的主要障碍，阻碍了MMVF废物的有效回收。这项研究强调，迫切需要制定最新的、标准化的欧洲政策，以确保工人安全和可持续的废物管理。

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引用次数: 0

Effects of temperature and material thickness on the diffusion properties of bituminous geomembranes (BGMs) in waste containment systems 温度和材料厚度对沥青土工膜在垃圾围护系统中扩散性能的影响

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management

Pub Date : 2025-12-26 DOI: 10.1016/j.wasman.2025.115298

A.M. Arif , F.B. Abdelaal

The diffusion behaviour of four elastomeric bituminous geomembranes (BGMs) from two manufacturers and with different thicknesses is investigated to assess the effects of temperature, thickness, and formulation on their performance as diffusive barriers for solid waste containment applications. All BGMs examined had a 0.012 mm anti-root polyester (PET) film at their bottom surfaces. Diffusion tests are conducted on the as-received BGMs and the BGM components (the isolated PET film, and a modified BGM sample obtained by removing the PET film from the as-received material) at 24 °C, 35 °C and 50 °C. The diffusion parameters inferred at the three test temperatures were used to generate theoretical concentration profiles, which closely matched the experimental data, thereby validating the use of a two-layer modelling approach that treats BGMs as a multilayer composite material. Results demonstrated a clear increase in the diffusion of volatile organic compounds (VOCs) with temperature through the as-received BGM and its different components, with the PET film providing the main resistance to VOC migration. Additionally, it is shown that thicker BGMs exhibited longer times to equilibrium, consistent with a reduced rate of permeation resulting from extended diffusion pathways. However, BGMs from the same manufacturer exhibited comparable diffusion parameters regardless of thickness. These findings highlight the need for material-specific composition testing in diffusive performance assessments. They also show the key role of temperature and the PET film in controlling the VOC migration through BGMs in containment barrier systems.

研究了来自两家制造商不同厚度的四种弹性沥青土工膜（BGMs）的扩散行为，以评估温度、厚度和配方对其作为固体废物遏制应用扩散屏障性能的影响。所有检测的bgm底部表面都有0.012毫米的抗根聚酯（PET）膜。在24°C、35°C和50°C下对接收的BGM和BGM组分（分离的PET膜和通过从接收材料中去除PET膜获得的改性BGM样品）进行扩散试验。在三种测试温度下推断的扩散参数用于生成理论浓度曲线，该曲线与实验数据密切匹配，从而验证了将bgm视为多层复合材料的两层建模方法的使用。结果表明，随着温度的升高，挥发性有机化合物（VOCs）在BGM及其不同组分中的扩散明显增加，其中PET薄膜对VOC迁移的抵抗作用最大。此外，研究表明，较厚的BGMs达到平衡所需的时间较长，这与扩散途径延长导致的渗透速率降低相一致。然而，来自同一制造商的bgm无论厚度如何，其扩散参数都具有可比性。这些发现强调了在扩散性能评估中对特定材料成分进行测试的必要性。他们还显示了温度和PET薄膜在控制VOC通过封闭屏障系统中的bgm迁移中的关键作用。

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引用次数: 0

Evaluation of aeration for stabilising a landfill with low-organic waste 低有机垃圾填埋场曝气稳定性评价

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management

Pub Date : 2025-12-26 DOI: 10.1016/j.wasman.2025.115305

Phebe Linette Bonilla Prado , Peter Kjeldsen , Lotte Fjelsted , Jens E. Larsen , Anders G. Christensen , Charlotte Scheutz

The applicability of landfill aeration for stabilising old and low-organic waste was tested at the AV Miljø landfill, Denmark. Preliminary air injection tests achieved higher aeration flow rates in the southwest area (250–370 m³ h⁻¹) compared to the northeast (150–200 m³ h⁻¹) of the waste cell, with visible response pressure up to ∼ 40 m away from the injection point. A five-week aeration test with an air injection flow of 200 m³ h⁻¹ injected at 5–6.5 m depth resulted in a temperature increase of ∼ 10 °C in the waste body, indicating increased aerobic biological activity, especially after aeration stopped and the winter air did not cool down the waste. Aeration effectively transformed anaerobic conditions into aerobic, thereby accelerating organic waste degradation and significantly reducing CH₄ concentrations from 53.4− 67.7 to 0.2 – 15.3 %vol. Air distribution during aeration was predominantly horizontal, with nitrogen found at an influence radius of over 80 m and oxygen depletion within 50 m. The estimated oxygen consumption rate was low, at ∼ 0.002 mg O₂ g DW⁻¹ h⁻¹, as expected for waste with low organic content. Based on the aeration radius of influence, the facilities for full-scale aeration experiment were redesigned, reducing from 60 projected wells to only 15 wells, reducing costs. A full-scale aeration system is planned to further investigate the benefits of aeration for landfills with low organic content.

在丹麦AV Miljø填埋场测试了填埋场曝气对稳定旧废物和低有机废物的适用性。与废电池的东北部（150-200 m3 h - 1）相比，初步的空气注入试验在西南区域（250-370 m3 h - 1）获得了更高的曝气流量，在距离注入点约40米的地方可以看到响应压力。在5-6.5 m深度进行为期5周的曝气试验，注入空气流量为200 m3 h−1，导致废物体内温度升高~ 10°C，表明有氧生物活性增加，特别是在停止曝气和冬季空气没有冷却废物之后。曝气有效地将厌氧条件转化为好氧条件，从而加速有机废物的降解，并显着将CH4浓度从53.4 - 67.7降低到0.2 - 15.3% vol。曝气过程中的空气分布主要是水平分布，氮气的影响半径在80 m以上，氧气损耗在50 m以内。估计的耗氧率很低，约为0.002 mg O2 g DW−1 h−1，与有机物含量低的废物的预期一致。根据曝气半径的影响，重新设计了全尺寸曝气实验设施，将预计的60口井减少到15口井，降低了成本。一个全面的曝气系统计划进一步研究曝气对低有机含量垃圾填埋场的好处。

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引用次数: 0