Environmental Technology & Innovation最新文献_第8页

Enhancing salt tolerance and growth of Oryza sativa L. through biochar-bacteria composite amendment for potential application in coastal saline soil reclamation 生物炭-细菌复合改良剂提高水稻耐盐性和生长，在滨海盐碱地复垦中的应用前景

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-11-28 DOI: 10.1016/j.eti.2025.104667

Yihao Mei , Mirezhatijiang Kayoumu , Tingting He , Xuedan Cui , Guilan Duan

Coastal saline-alkaline soils, characterized by high salinity, elevated pH, and poor physical structure, severely constrain rice productivity, and various management practices are employed to improve crop performance under saline environments. In this study, we developed a multifunctional composite (WDB@BM) by loading Bacillus mucilaginosus onto wood-vinegar-acidified diatomite-modified biochar (WDB). Incubation and pot trials using salt-tolerant Zhejingyou 1578 (ZJY 1578) and salt-sensitive Zhejingyou 4 (ZJY 4) rice varieties revealed that WDB@BM application outperformed sole amendments by decreasing soil pH, exchangeable Na⁺, and electrical conductivity (EC) while elevating cation exchange capacity (CEC) and nutrient availability. This occurred with enhanced soil enzymatic activities and alterations to the microbial community structure. Meanwhile, bacterial colonization enriched the beneficial rhizosphere microbiota, particularly Pseudomonadota and Acidobacteriota. Critically, WDB@BM significantly enhanced salt tolerance of rice ZJY 1578 by promoting Na⁺ root compartmentalization, lowering leaf Na⁺/K⁺ ratio (70.57 %), activating key antioxidant enzymes (superoxide dismutase (SOD): 72.28 %; catalase (CAT): 115.49 %), and accumulating osmolytes (proline: 63.5 %; soluble sugar: 62.9 %). Metabolomic analysis further revealed enriched nucleotide metabolism and ATP-binding cassette (ABC) transporters underpinning stress adaptation. This synergistic soil-plant-microbe modulation was particularly effective in the salt-tolerant cultivar ZJY 1578, establishing WDB@BM as a promising strategy for sustainable saline-alkali agriculture.

沿海盐碱地盐碱度高、pH值高、物理结构差，严重制约了水稻的生产能力，盐碱地环境下的作物生产性能需要采取多种管理措施。在这项研究中，我们开发了一种多功能复合材料（WDB@BM），该复合材料将粘液芽孢杆菌（Bacillus mucilaginosus）加载到木醋酸化硅藻土改性生物炭（WDB）上。对耐盐水稻品种浙粳优1578 （ZJY 1578）和盐敏感水稻品种浙粳优4 （ZJY 4）进行的培养和盆栽试验表明，WDB@BM处理通过降低土壤pH值、交换性Na +和电导率（EC），提高阳离子交换容量（CEC）和养分有效性，优于单一改良剂。这与土壤酶活性的增强和微生物群落结构的改变有关。同时，细菌定殖丰富了有益的根际微生物群，特别是假单胞菌群和酸杆菌群。关键的是，WDB@BM通过促进Na +根区区化，降低叶片Na + /K +比值（70.57 %），激活关键抗氧化酶（超氧化物歧化酶（SOD）： 72.28 %），显著增强水稻ZJY 1578的耐盐性；过氧化氢酶（CAT）： 115.49 %)和积累渗透物（脯氨酸：63.5 %；可溶性糖：62.9 %）。代谢组学分析进一步揭示了丰富的核苷酸代谢和atp结合盒（ABC）转运蛋白支持胁迫适应。这种土壤-植物-微生物协同调节在耐盐品种zjy1578中特别有效，确立了WDB@BM作为可持续盐碱农业的一种有前景的策略。

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引用次数: 0

Mechanical properties and microstructural evolution of fly ash stabilized loess: Insights from multiscale analysis and environmental impacts 粉煤灰稳定黄土的力学特性和微观结构演化：来自多尺度分析和环境影响的见解

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-12-27 DOI: 10.1016/j.eti.2025.104729

Xuanyu Gao , Wanli Xie , Kangze Yuan , Qiqi Liu

Loess, widely distributed globally, is prone to geological hazards due to its metastable structure. Conventional stabilizers (cement, lime) improve its mechanical properties but cause high carbon emissions. This study investigates the effectiveness of fly ash as an eco-friendly stabilizer for loess via multiscale analysis and life cycle assessment (LCA). Unconfined compression tests (UCS) were conducted to evaluate mechanical performance. The UCS of loess stabilized with 20 % fly ash increased by 330.4 % compared with compacted loess. Microstructural evolution is characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray computed tomography (CT). The results show that fly ash particles can fill the inter-aggregate pores, leading to the transformation of macropores and mesopores into small pores and improving cementation. Three-dimensional CT analysis further confirms that with the addition of fly ash, the microstructure becomes denser and the pore morphology evolves toward spherical shapes. LCA demonstrates that compared to conventional stabilizers, fly ash stabilization significantly reduces global warming potential (GWP) and primary energy demand (PED). Compared to stabilization with lime and cement, using fly ash for 1 m³ of loess reduces CO₂ eq emissions by 288.01 kg and 43.09 kg, and decreases PED by 1750.84 MJ and 300.44 MJ, respectively. These findings confirm fly ash as a sustainable stabilizer, supporting geotechnical applications and low-carbon soil improvement.

黄土分布广泛，具有亚稳结构，易发生地质灾害。传统的稳定剂（水泥、石灰）改善了其机械性能，但造成了高碳排放。通过多尺度分析和生命周期评价（LCA）研究了粉煤灰作为生态友好型黄土稳定剂的有效性。进行无侧限压缩试验（UCS）来评估机械性能。粉煤灰掺量为20% %稳定黄土的单轴抗压强度比压实黄土提高330.4 %。通过x射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）和x射线计算机断层扫描（CT）对微观结构的演变进行了表征。结果表明：粉煤灰颗粒对集料间孔隙进行充填，使大孔和中孔转变为小孔，提高了胶结性能；三维CT分析进一步证实，粉煤灰的加入使其微观结构更加致密，孔隙形态向球形演化。LCA表明，与常规稳定剂相比，粉煤灰稳定剂显著降低了全球变暖潜能值（GWP）和一次能源需求（PED）。与石灰和水泥稳定化相比，1 m³ 黄土使用粉煤灰分别减少288.01 kg和43.09 kg的CO₂当量排放，减少1750.84 MJ和300.44 MJ的PED。这些发现证实了粉煤灰是一种可持续的稳定剂，支持岩土工程应用和低碳土壤改良。

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引用次数: 0

Bi2O3@folic acid nanoparticles: An effective sonosensitizer for melanoma sonodynamic therapy Bi2O3@folic酸性纳米粒子：黑色素瘤声动力治疗的有效声敏剂

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2026-01-02 DOI: 10.1016/j.eti.2025.104741

M. Sarani , H. Haghighi , P. Tamaddon , M. Darroudi , A. Safari , S.A. Dastgheib , N. Sattarahmady

Nanosized materials demonstrate considerable promise in sonodynamic therapy (SDT), particularly in addressing the limitations of conventional cancer treatments. This study focuses on the synthesis of bismuth oxide and folic acid (FA)-functionalized bismuth oxide NPs (FA-bismuth oxide NPs), using Rheum turkestanicum extracts as an eco-friendly method. Characterization of the synthesized NPs was performed using powder X-ray diffraction, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, dynamic light scattering, zeta potential measurement, and UV–vis spectroscopy. Crystallite sizes of bismuth oxide and FA-bismuth oxide NPs were obtained as 43.42 and 57.90 nm, respectively, suggesting that FA incorporation facilitated particle growth. Additionally, FA modified the morphology of bismuth oxide NPs, transforming them from an amorphous structure to a conical-like shape in FA-bismuth oxide NPs. SDT effects of bismuth oxide and FA-bismuth oxide NPs on C540 (B16/F10) melanoma cells were evaluated by in vitro cytotoxicity assays, and reactive oxygen species (ROS) generation, glutathione degradation, apoptosis induction, mitochondrial membrane potential, cell migration suppression, and spheroid formation analyses. In vivo hemocompatibility in balb/c mice was also performed. Notably, FA-bismuth oxide NPs produced elevated level of ROS, leading to a marked reduction in intracellular glutathione level, and increased apoptosis via mitochondrial membrane potential decrement. The FA-bismuth oxide NPs also had in vivo hemocompatibility, and demonstrated in vitro enhanced therapeutic efficacy by significant inhibiting both cell migration and deep penetration in the spheroid. These findings established FA-bismuth oxide NPs as a highly effective sonosensitizer, offering potential advantages for SDT-based cancer treatments.

纳米材料在声动力治疗（SDT）中表现出相当大的前景，特别是在解决传统癌症治疗的局限性方面。本研究以大黄提取物为原料，以生态友好的方式合成氧化铋和叶酸功能化氧化铋NPs （FA-铋氧化物NPs）。采用粉末x射线衍射、场发射扫描电镜、能量色散x射线光谱、傅里叶变换红外光谱、动态光散射、zeta电位测量和紫外可见光谱对合成的NPs进行了表征。氧化铋和FA-氧化铋NPs的晶粒尺寸分别为43.42和57.90 nm，表明FA的加入促进了颗粒的生长。此外，FA修饰了氧化铋NPs的形态，使其从无定形结构转变为FA-氧化铋NPs的圆锥形结构。通过体外细胞毒性实验、活性氧（ROS）生成、谷胱甘肽降解、细胞凋亡诱导、线粒体膜电位、细胞迁移抑制和球体形成分析，评估氧化铋和fa -氧化铋NPs对C540 （B16/F10）黑色素瘤细胞的SDT作用。balb/c小鼠体内血液相容性测定。值得注意的是，fa -铋氧化物NPs产生ROS水平升高，导致细胞内谷胱甘肽水平显著降低，并通过线粒体膜电位衰减增加凋亡。fa -铋氧化物NPs还具有体内血液相容性，并通过显著抑制细胞迁移和在球体中的深度渗透而显示出体外增强的治疗效果。这些发现证实了fa -铋氧化物NPs是一种高效的声敏剂，为基于sdt的癌症治疗提供了潜在的优势。

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引用次数: 0

Impact of moisture regulation methods on the fish manure composting process and gas emissions 水分调节方法对鱼粪堆肥过程和气体排放的影响

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2026-01-07 DOI: 10.1016/j.eti.2026.104748

Ke Liu , Kai Zhang , Ping Li , Xiuli Wei , Ning Tang , Xuemeng Huang

Industrial Recirculating Aquaculture Systems (IRAS) excel at both wastewater treatment and the conversion of wastewater into usable resources, thereby offering vital support for the sustainable advancement of aquaculture. In this study, we aimed to identify suitable moisture regulation methods for composting of fish manure from IRAS. Seven treatment groups were established to investigate the effects of moisture regulation strategies: no water replenishment (T1), tap water replenishment (T2), compost leachate replenishment (T3), hydrothermal liquid replenishment (T4), and their combinations with hydrochar (T5-T7). Results show that the T6 treatment (compost leachate + hydrochar) performed optimally. In addition to increasing microbial diversity, it prolonged the high-temperature phase of composting to 12 days, enhanced compost water stability, and resulted in a seed germination index of 87.72 %. Additionally, T6 significantly reduced emissions of greenhouse gases (N₂O and CH₄) and ammonia (NH₃). The incorporation of hydrochar effectively delayed the transition of capillary water to free water, and enhanced the overall stability of the reactor. In conclusion, the combination of compost leachate and hydrochar is an efficient and environmentally friendly method for regulating the moisture content of fish manure compost. Our study provides a theoretical basis and technical support for the resource utilization of fish manure.

工业循环水养殖系统（IRAS）在废水处理和将废水转化为可用资源方面表现出色，从而为水产养殖的可持续发展提供了至关重要的支持。在本研究中，我们的目的是确定合适的水分调节方法的堆肥从IRAS鱼粪。试验设置不补水（T1）、自来水补水（T2）、堆肥渗滤液补水（T3）、热液补水（T4）及其与水炭（T5-T7）组合7个处理组，研究水分调节策略的效果。结果表明，T6处理（堆肥渗滤液+水炭）效果最佳。除增加微生物多样性外，将堆肥高温期延长至12天，提高了堆肥水稳定性，种子萌发指数为87.72 %。此外，T6显著减少了温室气体（N2O和CH4）和氨（NH3）的排放。烃类的掺入有效延缓了毛细管水向自由水的过渡，提高了反应器的整体稳定性。综上所述，堆肥渗滤液与水炭相结合是一种高效环保的调节鱼粪堆肥含水率的方法。本研究为鱼粪资源化利用提供了理论依据和技术支持。

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引用次数: 0

Machine learning (ML) reveals the key factors influencing the removal of chlorinated hydrocarbons (CAHs) by nanoscale zero-valent iron (nZVI) 机器学习（ML）揭示了影响纳米级零价铁（nZVI）去除氯化烃（CAHs）的关键因素

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-12-27 DOI: 10.1016/j.eti.2025.104728

Yao Wang , Ruibing Fan , Guowei Shao , Feng Kang , Kuo Zhang , Jin Kang , Baorui Liang

Chlorinated hydrocarbons contaminate soil and groundwater and pose significant health and ecological risks. Nanoscale zero-valent iron is widely used for in situ remediation, but its reactivity can decline because of oxidation, surface passivation, and particle aggregation. This review first delineates chlorinated hydrocarbon removal mechanisms by nanoscale zero-valent iron, including adsorption, reduction, oxidation, and co-precipitation. We then summarize how pH, dissolved oxygen, coexisting ions, temperature, reaction time, and initial contaminant concentration shape removal outcomes. To quantify multivariable effects, we compiled 5923 experimental datapoints from 90 publications and applied machine learning models with interpretable feature attribution. Reaction time and specific surface area were the strongest synergistic drivers, and their effects leveled off after approximately 4 days and at around 120 m²/g, respectively. The analysis also identified a high-efficiency window within 0.25 day, an economical dosage near 0.2 g/L, and a concentration sensitivity threshold around 25 mg/L. Bicarbonate below 500 mg/L inhibited chlorinated hydrocarbon removal, whereas copper ions promoted reactivity. These quantitative insights can guide the design of modified nanoscale zero-valent iron and hybrid technologies for robust remediation in complex water matrices.

氯化碳氢化合物污染土壤和地下水，造成重大的健康和生态风险。纳米级零价铁被广泛用于原位修复，但其反应性会因氧化、表面钝化和颗粒聚集而下降。本文首先介绍了纳米级零价铁去除氯化烃的机理，包括吸附、还原、氧化和共沉淀。然后我们总结了pH值、溶解氧、共存离子、温度、反应时间和初始污染物浓度如何影响去除结果。为了量化多变量效应，我们从90篇出版物中收集了5923个实验数据点，并应用了具有可解释特征归因的机器学习模型。反应时间和比表面积是最强的协同驱动因素，它们的作用在大约4天后趋于稳定，分别在120 m2/g左右。分析还确定了0.25 天内的高效窗口，0.2 g/L附近的经济剂量，以及25 mg/L左右的浓度敏感阈值。低于500 mg/L的碳酸氢盐抑制氯化烃的去除，而铜离子促进反应活性。这些定量的见解可以指导设计修饰的纳米级零价铁和混合技术，以在复杂的水基质中进行强大的修复。

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引用次数: 0

Evaluation of non-degrading physical approaches for sustainable odour reduction in flax fibres 亚麻纤维持续减少气味的非降解物理方法的评价

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-12-30 DOI: 10.1016/j.eti.2025.104734

Faustine Poret, Géraldine Savary

Flax (Linum usitatissimum L.) fibres are increasingly used in textiles, composites and eco-designed products due to their renewable nature, mechanical strength, and environmental compatibility. Nevertheless, their widespread use is hampered by the emission of unpleasant odours and volatile organic compounds (VOCs), which compromise consumer acceptance in applications such as automotive interiors and indoor materials. This study investigated two solvent-free deodorization techniques: hydrodistillation (HD) and steam distillation (SD), applied to dew-retted and scutched flax fibres. Odour intensity was evaluated by a sensory panel, while VOC emissions were quantified by headspace solid-phase microextraction followed by gas chromatography–mass spectrometry analysis (HS-SPME-GC-MS). Both treatments significantly decreased odour intensity (p < 0.05), with HD providing a stronger reduction and yielding more homogeneous results. Chemical analysis confirmed marked decreases in aliphatic aldehydes (hexanal, heptanal, octanal, nonanal, and decanal) and furans, known to be key contributors to unpleasant sensory notes. These findings demonstrate that HD and SD are efficient, non-degrading, and solvent-free processes that improve the olfactory acceptability of flax fibres while remaining compatible with sustainable and industrial practices. By mitigating odour without compromising fibre integrity, these methods support the broader adoption of flax fibres in odour-sensitive markets and align with the principles of green chemistry.

亚麻（Linum usitatissimum L.）纤维由于其可再生特性、机械强度和环境兼容性，越来越多地用于纺织品、复合材料和生态设计产品。然而，它们的广泛使用受到令人不快的气味和挥发性有机化合物（VOCs）的排放的阻碍，这损害了消费者在汽车内饰和室内材料等应用中的接受度。研究了两种无溶剂脱臭技术：加氢蒸馏法（HD）和蒸汽蒸馏法（SD），分别应用于亚麻纤维的湿法和湿法脱臭。气味强度通过感官面板进行评估，VOC排放量通过顶空固相微萃取和气相色谱-质谱分析（HS-SPME-GC-MS）进行量化。两种处理都显著降低了气味强度（p <； 0.05），HD提供了更强的降低，产生更均匀的结果。化学分析证实，脂肪醛（己醛、庚醛、辛醛、壬醛和癸醛）和呋喃的含量明显下降，而这些物质是造成不愉快感觉的主要因素。这些发现表明，HD和SD是高效、不降解和无溶剂的工艺，可以提高亚麻纤维的嗅觉可接受性，同时保持与可持续和工业实践的兼容性。通过在不损害纤维完整性的情况下减轻气味，这些方法支持亚麻纤维在气味敏感市场的广泛采用，并符合绿色化学的原则。

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引用次数: 0

H3PO4-modified biochar derived from pear branches for efficient neonicotinoid removal 梨枝h3po4改性生物炭高效脱除新烟碱

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2026-01-07 DOI: 10.1016/j.eti.2026.104747

Jing Li , Ping Han , Renke Zhang , Yan Tao , Jinwei Zhang , Pingzhong Yu , Ercheng Zhao , Junjie Jing , Kai Wang , Junxue Wu

The widespread presence of neonicotinoids (NEOs) in environmental matrices has raised significant concerns regarding their potential ecotoxicological effects and risks to human health. This study aims to address this issue by converting underutilized pear branch waste into a high-performance NEO adsorbent and elucidating the adsorption process. Pristine biochar (BC) and four modified biochars (H₃PO₄-, KOH-, humic acid-, and 2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO)-modified BC) were produced from pear branch waste through nonmetallic doping and pyrolysis at 700°C. The adsorption performance for four NEOs (clothianidin, thiamethoxam, imidacloprid, and acetamiprid) was systematically evaluated. Batch experiments showed that H₃PO₄-BC had superior removal efficacy (67.8 %–81.0 %) for the four NEOs at an initial concentration of 10 mg L⁻¹, using a dosage of only 5 mg. This was attributed to its high specific surface area and abundance of oxygen-rich functional groups, which facilitated multi-mechanism adsorption. The adsorption process was heterogeneous and involved multisite binding. Furthermore, it was spontaneous (ΔG < 0) and endothermic (ΔH > 0), with an increase in entropy (ΔS > 0). Optimal adsorption occurred under acidic conditions owing to protonation of the NEOs. In addition, background ions caused minimal interference. The following adsorption pathways contributed to the overall process: hydrogen bonding (35.2 %–41.4 %), pore filling (14.4 %–38.3 %), hydrophobic partitioning (3.1 %–27.2 %), π–π electron donor–acceptor interactions (15.3 %–17.0 %), and ion exchange (1.5 %–8.7 %). This study directly addresses gaps in the literature by transforming pear branch waste into a high-value adsorbent and by providing a quantified, multi-mechanistic framework for designing adsorbents to remove NEOs from aquatic environments.

新烟碱类化合物在环境基质中的广泛存在引起了人们对其潜在生态毒理学效应和人类健康风险的严重关切。本研究旨在通过将未充分利用的梨枝废弃物转化为高性能NEO吸附剂并阐明吸附过程来解决这一问题。以梨枝废弃物为原料，通过非金属掺杂和700℃热解制备了原始生物炭（BC）和四种改性生物炭（H3PO4-、KOH-、腐植酸-和2,2,6,6-四甲基辣椒碱-1-基）氧（TEMPO）改性BC)。系统评价了四种neo（噻虫胺、噻虫嗪、吡虫啉和啶虫啉）的吸附性能。批量实验表明，当初始浓度为10 mg L−1时，H3PO4-BC对4种neo的去除率为67.8% % -81.0 %，投加量仅为5 mg。这是由于其高比表面积和丰富的富氧官能团，有利于多机理吸附。吸附过程是多相的，涉及多位点结合。该反应为自发反应（ΔG < 0）和吸热反应（ΔH > 0），且熵增加（ΔS > 0）。由于neo的质子化作用，在酸性条件下吸附效果最佳。此外，背景离子造成的干扰最小。以下吸附途径导致整个过程:氢键(35.2 % -41.4 %),孔隙填充(14.4 % -38.3 %),疏水性分区(3.1 % -27.2 %),π-π电子亲水相互作用(15.3 % -17.0 %),和离子交换(1.5 % -8.7 %)。本研究通过将梨枝废弃物转化为高价值吸附剂，并为设计吸附剂从水生环境中去除neo提供了一个量化的多机制框架，直接解决了文献中的空白。

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引用次数: 0

Hydrogeochemical evolution characteristics of groundwater associated with closed coal mine in karst mountainous area and the impact on irrigation and human health 岩溶山区封闭煤矿伴生地下水水文地球化学演化特征及其对灌溉和人体健康的影响

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2026-01-12 DOI: 10.1016/j.eti.2026.104752

Yu Yang , Bo Li , Pan Wu , Pu Liu , Tao Li , Ye Luo

Acid mine drainage (AMD) leakage represents a serious concern due to its potential to contaminate surface water and groundwater, thereby posing a significant threat to the well-being of residents inhabiting water-stressed karst mountainous regions. This study examines the hydrochemical characteristics and controlling factors of groundwater and surface water around a closed coal mine in Southwest China. Hydrochemical analysis and hydrogen-oxygen isotopes were applied to water samples to assess the impacts of mine drainage on water quality, irrigation suitability, and human health. Results show that the leaked mine water has a pH below 6 and elevated concentrations of SO₄^2-, TDS, Fe, and Al. Groundwater is classified as SO₄·HCO₃-Ca type, whereas surface water is predominantly SO₄-Ca type. The slopes of δD-δ¹⁸O relationship are 6.89 for groundwater and 5.89 for surface water, with corresponding d-excess values of −1.16 ‰ and −2.88 ‰. Hydrochemical evolution is mainly controlled by sulfuric acid weathering of silicate and carbonate rocks (driven by AMD), along with water-rock interaction, evaporation, cation exchange, and anthropogenic inputs. All samples show negative chloro-alkaline indices (CAI < 0). Surface water quality is moderate to poor, whereas groundwater quality is generally medium or better. Principal component analysis identifies total hardness (TH), SO₄^2-, TDS and Na⁺ as the dominant factors affecting water quality, with component loadings > 0.8 and correlation coefficients of 0.84, 0.83, 0.80, and 0.60, respectively. The permeability index (PI) is below 25 % for all surface water samples and for 53.85 % of groundwater samples, indicating that irrigation use may reduce soil permeability. The annual hazard quotient (HQ) for children reaches 3.20 a⁻¹, 1.62 times that for adults, suggesting that direct ingestion of water in study area may pose a significant non-carcinogenic health risk. These findings provide important insights for managing water resources in karst terrains affected by closed mining operations.

酸性矿井水（AMD）泄漏是一个严重的问题，因为它可能污染地表水和地下水，从而对居住在缺水的喀斯特山区的居民的福祉构成重大威胁。以西南某关停煤矿为研究对象，研究了煤矿周围地下水和地表水的水化学特征及其控制因素。采用水化学分析和氢氧同位素对水样进行分析，评价矿井排水对水质、灌溉适宜性和人体健康的影响。结果表明：泄漏矿井水pH值低于6，SO42-、TDS、Fe、Al浓度升高，地下水以SO4·HCO3-Ca型为主，地表水以SO4- ca型为主；地下水δD-δ18O关系斜率为6.89，地表水δD-δ18O关系斜率为5.89，对应的δD过量值分别为- 1.16 ‰和- 2.88 ‰。水化学演化主要受控于硅酸和碳酸盐岩的硫酸风化作用（由AMD驱动），以及水岩相互作用、蒸发、阳离子交换和人为输入。所有样品的氯碱指数均为阴性（CAI < 0）。地表水水质一般为中等至较差，而地下水水质一般为中等或较好。主成分分析表明，总硬度（TH）、SO42-、TDS和Na+是影响水质的主导因素，组分负荷>； 0.8，相关系数分别为0.84、0.83、0.80和0.60。地表水和地下水的渗透性指数分别低于25 %和53.85 %，表明灌溉会降低土壤渗透性。儿童的年危害商（HQ）为3.20 a−1，是成人的1.62倍，表明研究区直接饮水可能造成重大的非致癌性健康风险。这些发现为管理受封闭式开采影响的喀斯特地区的水资源提供了重要见解。

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引用次数: 0

Ce2Mo3O12/g-C3N4 nanocomposites: Optimization of synthesis parameters, characterization, and study as a potential hydrogen storage material Ce2Mo3O12/g-C3N4纳米复合材料：合成参数优化、表征及潜在储氢材料研究

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2026-01-29 DOI: 10.1016/j.eti.2026.104797

Masoud Salavati-Niasari , Ahmad Akbari , Elmuez A. Dawi , Safaa Mustafa Hameed , Forat H. Alsultany , Hadil Hussain Hamza

In order to improve the electrochemical hydrogen storage capacity, Ce₂Mo₃O₁₂/g-C₃N₄ nanocomposites were synthesized via sonochemical approach with involving desirable electrochemical efficiency, great specific surface area, and special morphology. Herein, the electrochemical hydrogen storage abilities of as-schemed electrodes, namely Ce₂Mo₃O₁₂, g-C₃N₄, and Ce₂Mo₃O₁₂/g-C₃N₄ nanocomposites were studied via chronopotentiometry charge–discharge (CCD) method at constant current. According to the obtained results, the combination effect between the Ce₂Mo₃O₁₂ and g-C₃N₄ can boost the electrochemical hydrogen storage performance in terms of discharge capacity and cycling stability. The maximum value of capacity for Ce₂Mo₃O₁₂/g-C₃N₄ nanocomposites was about 1920.3 mAh/g, which is a significant result as compared to the Ce₂Mo₃O₁₂ (S₃, 1003.2 mAh/g) after 20 cycles. Consequently, the Ce₂Mo₃O₁₂/g-C₃N₄ nanocomposites displayed a worthy capacity as capable active materials for hydrogen storage application.

为了提高电化学储氢能力，采用声化学方法合成了电化学效率高、比表面积大、形貌特殊的Ce2Mo3O12/g-C3N4纳米复合材料。本文采用恒流计时电势充放电（CCD）方法研究了Ce2Mo3O12、g-C3N4和Ce2Mo3O12/g-C3N4纳米复合材料的电化学储氢能力。结果表明，Ce2Mo3O12与g-C3N4的组合效应可以在放电容量和循环稳定性方面提高电化学储氢性能。经过20次循环后，Ce2Mo3O12/g- c3n4纳米复合材料的最大容量约为1920.3 mAh/g，与Ce2Mo3O12 （S3, 1003.2 mAh/g）相比，这是一个显著的结果。因此，Ce2Mo3O12/g-C3N4纳米复合材料作为储氢活性材料具有一定的应用价值。

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引用次数: 0

Evaluating and mitigating the adverse effects of halide ions on the sulfamethoxazole degradation in the Co2+/peroxymonosulfate process Co2+/过氧单硫酸盐工艺中卤化物离子对磺胺甲恶唑降解的不利影响评价与缓解

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-12-02 DOI: 10.1016/j.eti.2025.104674

Fei Yang , Zixuan Zhao , Ying Liu , Wenshan Guo , Xinbo Zhang

Halide ions are commonly found in aquaculture wastewater, yet their halide-specific influence on sulfamethoxazole (SMX) degradation within the Co²⁺/peroxymonosulfate (PMS) process requires further investigation to be fully elucidated. This study systematically evaluated the impacts of halides, revealing that trace concentrations of Br⁻ (0.05 mM) significantly enhanced SMX elimination kinetics, achieving rate constants ∼12 times higher than with Cl⁻ (50 mM) and ∼4.5 times higher than in the baseline Co²⁺/PMS system. The significant enhancement observed with Br⁻ is attributed to the selective singlet oxygen (¹O₂)-mediated oxidation of SMX. However, the formation of halogenated aromatic products and the ecotoxicity of dimeric by-products in the presence of Br⁻ warranted attention. This adverse effect was effectively mitigated through the strategic addition of sulfamic acid (0.1 mM) as a selective inhibitor. A possible degradation pathway of SMX in the Co²⁺/PMS system was proposed. These findings establish a quantitative framework for optimizing the Co²⁺/PMS process, enabling effective degradation of sulfonamide antibiotics in halide-rich wastewater while minimizing ecotoxicological risks through targeted pathway control.

卤化物离子在水产养殖废水中普遍存在，但在Co2+/过氧单硫酸盐（PMS）工艺中，卤化物对磺胺甲氧苄唑（SMX）降解的特定影响需要进一步研究才能充分阐明。这项研究系统地评估了卤化物的影响，发现痕量的Br -毒血症（0.05 mM）显著增强了SMX的消除动力学，其速率常数比Cl -毒血症（50 mM）高12倍，比基线Co2+/PMS系统高4.5倍。用Br（毒血症）观察到的显著增强归因于选择性单线态氧（1O2）介导的SMX氧化。然而，卤化芳香产物的形成和二聚体副产物的生态毒性在溴的存在下值得注意。通过添加选择性抑制剂磺胺酸（0.1 mM）有效地减轻了这种不良影响。提出了SMX在Co2+/PMS体系中降解的可能途径。这些发现为优化Co2+/PMS工艺建立了定量框架，实现了富卤化物废水中磺胺类抗生素的有效降解，同时通过有针对性的途径控制最小化生态毒理学风险。

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引用次数: 0