Environmental Technology & Innovation最新文献_第2页

The regulation of Cd and As behavior by the iron oxide-organic matter interaction: The simultaneous immobilization mechanism of coal gasification slag 氧化铁-有机物相互作用对Cd和As行为的调控：煤气化渣的同步固定化机理

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

Environmental Technology & Innovation

Pub Date : 2026-01-12 DOI: 10.1016/j.eti.2026.104754

Chang Xing , Shunhao Ai , Hui Wang , Hao Zhang , Changzhi Zhou , Ying Yuan , Wenbing Tan

Cadmium (Cd) and arsenic (As) co-contamination in agricultural soils is challenging to remediate due to their opposing geochemical behaviors. Although iron-modified gasification slag (IGS) can simultaneously adsorb Cd and As, its mechanisms in inhibiting the migration of Cd and As within the soil-plant system, as well as its interactions with dissolved organic matter (DOM), remain unclear. Through a pot experiment, it was demonstrated that the application of IGS significantly reduces the bioavailability of Cd from 0.40 mg/kg to 0.18 mg/kg and As from 12.66 mg/kg to 6.49 mg/kg, while promoting their transformation into more stable soil fractions. Consequently, IGS effectively blocked Cd and As transformation, reducing Cd and As concentrations in plant leaves from 0.96 mg/kg and 0.37 mg/kg to 0.12 mg/kg and 0.14 mg/kg, respectively. Mechanistic analysis revealed that the oxidation and dissolution of zero-valent iron in IGS drives the formation of active iron oxide phases. These new oxides serve as primary sinks, immobilizing Cd and As through adsorption and incorporation. Furthermore, IGS altered soil DOM, reducing its total content and specific fulvic/humic components, as characterized by excitation-emission matrix fluorescence spectroscopy. This reduction is attributed to the formation of iron oxide-DOM complexes, which diminishes the pool of ligands available for metal mobilization, thereby enhancing the net sequestration of Cd and As. Our findings elucidate the coupled Fe-DOM processes underpinning IGS efficacy, advancing its potential application for the simultaneous remediation of Cd and As.

镉和砷在农业土壤中的共污染由于其相反的地球化学行为而具有挑战性。虽然铁改性气化渣（IGS）可以同时吸附Cd和As，但其抑制Cd和As在土壤-植物系统内迁移的机制及其与溶解有机质（DOM）的相互作用尚不清楚。盆栽试验结果表明，施用IGS显著降低了镉和砷的生物利用度，镉和砷的生物利用度分别从0.40 mg/kg和12.66 mg/kg降至0.18 mg/kg和6.49 mg/kg，促进了镉和砷转化为更稳定的土壤组分。因此，IGS有效地阻断了Cd和As的转化，将植物叶片中Cd和As的浓度分别从0.96 mg/kg和0.37 mg/kg降低到0.12 mg/kg和0.14 mg/kg。机理分析表明，零价铁在IGS中的氧化和溶解驱动了活性氧化铁相的形成。这些新的氧化物作为初级汇，通过吸附和吸附固定Cd和as。此外，IGS改变了土壤DOM，降低了其总含量和特定的腐殖/腐殖质成分，并通过激发-发射矩阵荧光光谱进行了表征。这种减少归因于氧化铁- dom络合物的形成，这减少了可用于金属动员的配体池，从而增强了镉和砷的净固存。我们的研究结果阐明了支持IGS功效的耦合Fe-DOM过程，推进了其在同时修复Cd和As方面的潜在应用。

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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 : 2026-01-12 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

Coffee pulp and husk-derived hydrochars and biochars adsorb polyphenols and pesticides from wastewater 咖啡浆和壳衍生的水炭和生物炭吸附废水中的多酚和农药

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

Environmental Technology & Innovation

Pub Date : 2026-01-09 DOI: 10.1016/j.eti.2025.104739

Brigitte Mukarunyana , Cecilia Sundberg , Christoffer Boman , Telesphore Kabera , Jerker Fick

Coffee processing generates significant amounts of wastewater rich in organic compounds and sometimes also pesticides. This poses environmental challenges for producing regions. This study aimed to assist coffee producers by providing local waste management solutions by examining the adsorption efficiency of hydrochars and biochars derived from coffee pulps (CP) and coffee husks (CH) in removing polyphenols and pesticides from coffee processing wastewater (CPWW). These materials were tested for the adsorption of selected polyphenols and pesticides from CPWW. Hydrochars exhibited high removal efficiencies for polyphenols (up to 100 %), primarily via hydrogen bonding, while biochars effectively adsorbed hydrophobic pesticides (removal efficiencies up to ∼75 %) through hydrophobic interactions. Adsorption data fitted the Freundlich isotherm, indicating multilayer adsorption, and kinetic analyses suggested complex mechanisms involving both physisorption and chemisorption. These findings demonstrate the potential of coffee waste-derived chars to serve as sustainable adsorbents for mitigating pollution from CPWW, offering a promising local waste management strategy in coffee-producing countries

咖啡加工过程中会产生大量富含有机化合物的废水，有时还会产生杀虫剂。这给生产地区带来了环境挑战。本研究旨在通过考察从咖啡浆（CP）和咖啡壳（CH）中提取的水炭和生物炭对咖啡加工废水（CPWW）中多酚和农药的吸附效率，为咖啡生产商提供当地废物管理解决方案。测试了这些材料对CPWW中所选多酚和农药的吸附性能。水炭对多酚的去除效率很高（高达100 %），主要通过氢键，而生物炭通过疏水相互作用有效吸附疏水农药（去除效率高达75 %）。吸附数据符合Freundlich等温线，表明多层吸附，动力学分析表明复杂的吸附机制包括物理吸附和化学吸附。这些研究结果表明，咖啡废物产生的木炭有潜力作为可持续吸附剂，减轻CPWW的污染，为咖啡生产国提供了一种有前途的当地废物管理策略

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引用次数: 0

Mechanism of high-temperature and chemical synergistic pretreatment driving composting humification: Elucidating the roles of compost component transformation and microbial community regulation 高温化学协同预处理驱动堆肥腐殖质化的机理：阐明堆肥组分转化和微生物群落调节的作用

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

Environmental Technology & Innovation

Pub Date : 2026-01-08 DOI: 10.1016/j.eti.2026.104751

Haobo Guo , Zhaofeng Chang , Jinrong Feng , Zhiyong Lu , Qipeng Dai , Guocheng Hu , Mingdeng Xiang , Liang Tang , Yunjiang Yu

The rapid expansion of China’s agro-livestock sector has intensified the challenges of lignocellulosic waste management owing to the recalcitrant structures of these materials during conventional composting. This study evaluated synergistic pretreatment strategies combining high-temperature (110°C) with acid/alkali treatment (0.1 mol/L H₂SO₄ or Ca(OH)₂) to enhance the composting efficiency of cherry wood. Results showed that pretreatment disrupted the lignocellulose structure and functional groups of cherry wood. In addition, combined treatments markedly reduced lignin content (AcHTW: 140.24 mg/g; AlHTW: 161.03 mg/g) than that of single pretreatments (AcYTW: 225.87 mg/g; AlYTW: 221.20 mg/g). Acid-high-temperature (AcHTW) and alkali-high-temperature (AlHTW) pretreatments promoted lignocellulose depolymerization, reducing hemicellulose to 70.62 mg/g (AcHTW) and cellulose to 118.25 mg/g (AlHTW) and 138.90 mg/g (AcHTW), respectively. The high-temperature-based synergistic pretreatments demonstrated superior humification performance, elevating humic acid (HA) content to 225.61–253.84 mg/g with corresponding humification indices (HIX) of 0.732–0.780, representing 6.2–13.2 % enhancement over untreated controls (HIX: 0.689). Microbial analysis identified Acinetobacter, Comamonas, Psychrobacter, and Pusillimonas as the dominant genera associated with humification, while Gimesia and Ferrovibrio were positively correlated with lignin degradation. Random forest and PLS-PM modeling indicated that bacterial diversity directly promoted lignocellulose decomposition (path coefficient: 0.274*) and humus formation (0.236*), whereas lignocellulose exerted a strong inhibitory effect on humus accumulation (0.770***). These processes were primarily driven by carbohydrate metabolism (15.68 %) and the synergistic action of laccase and cellulase. Overall, acid/alkali-high-temperature pretreatment alleviated microbial inhibition and enriched functional taxa, providing mechanistic insight into lignocellulose valorization during composting.

中国农业畜牧业的迅速发展加剧了木质纤维素废弃物管理的挑战，因为这些材料在传统堆肥过程中具有顽固的结构。研究了高温（110℃）与酸/碱（0.1 mol/L H2SO4或Ca(OH)2）联合处理的协同预处理策略，以提高樱桃木的堆肥效率。结果表明，预处理破坏了樱桃木的木质纤维素结构和官能团。此外，与单一预处理（AcYTW: 225.87 mg/g; AlYTW: 221.20 mg/g）相比，联合处理显著降低了木质素含量（AcHTW: 140.24 mg/g; AlHTW: 161.03 mg/g）。酸-高温（AcHTW）和碱-高温（AlHTW）预处理促进了木质纤维素的解聚，将半纤维素还原为70.62 mg/g (AcHTW)，纤维素还原为118.25 mg/g （AlHTW）和138.90 mg/g （AcHTW）。高温协同预处理的腐殖酸（HA）含量达到225.61 ~ 253.84 mg/g，腐殖酸指数（HIX）为0.732 ~ 0.780，比未处理的对照组（HIX: 0.689）提高6.2 ~ 13.2 %。微生物分析发现与腐殖化作用相关的主要属为不动杆菌属、Comamonas、Psychrobacter和Pusillimonas，而与木素降解相关的主要属为Gimesia和Ferrovibrio。随机森林和PLS-PM模型表明，细菌多样性直接促进了木质纤维素的分解（通径系数为0.274*）和腐殖质的形成（通径系数为0.236*），而木质纤维素对腐殖质积累具有较强的抑制作用（通径系数为0.770***）。这些过程主要由碳水化合物代谢（15.68 %）和漆酶和纤维素酶的协同作用驱动。总的来说，酸/碱高温预处理减轻了微生物抑制，丰富了功能类群，为堆肥过程中木质纤维素增值的机理提供了新的思路。

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引用次数: 0

Mitigation of odor emissions by replacing soybean meal with unconventional protein ingredients: Assessment via in vitro simulated fermentation 用非常规蛋白质成分代替豆粕减轻气味排放：通过体外模拟发酵进行评估

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

Environmental Technology & Innovation

Pub Date : 2026-01-07 DOI: 10.1016/j.eti.2026.104749

Ganlin Lv , Hao Fu , Yuhong Liao , Xinting Ma , Qiaoyun Chen , Qiang Han , Guanhong Li , Xionge Pi

To address the challenges of odor pollution from livestock farming and the need for resource conservation and reduced feed consumption, this study utilized an in vitro fermentation model to simulate the hindgut fermentation of fattening pigs. With soybean meal serving as the control, the impacts of eight unconventional protein feed ingredients—specifically defatted rice bran, peanut meal, two types of sesame meal, palm kernel meal, sunflower meal, dephenolic cottonseed protein, and corn gluten meal—on intestinal microbiota composition and metabolic activity were systematically evaluated. Fermentation end-products and gas emissions were quantified, and microbial community structure was analyzed using 16S rRNA gene sequencing. The palm kernel meal enhanced microbial diversity by enriching the Subdoligranulum and increased butyric acid production. The abundance of Lactobacillus enriched in the sesame meal-J was negatively correlated with the generation of H₂S and H₂, while Megasphaera and Streptococcus were positively correlated with the production of sulfur-containing gases and isovaleric acid. The microbial metabolic activity in the functional pathway of cysteine and methionine in the sesame meal-Q group increased by 60.4 %, positively regulating H₂S emissions. Through the regulatory framework of "nutrition-microbiota-odor emissions", this study revealed the mechanism by which unconventional protein feed ingredients regulate the gut microbiota of growing pigs to exert nutritional support and odor reduction effects. It provides a theoretical basis for the development of environmentally friendly feed and the reduction of soybean meal usage.

为解决畜牧业恶臭污染问题，节约资源和降低饲料消耗的需要，本研究采用体外发酵模型模拟育肥猪后肠发酵过程。以豆粕为对照，系统评价脱脂米糠、花生粕、两种芝麻粕、棕榈仁粕、葵花粕、脱酚棉籽蛋白和玉米蛋白粉8种非常规蛋白质饲料原料对饲粮肠道菌群组成和代谢活性的影响。对发酵终产物和气体排放进行量化，并利用16S rRNA基因测序分析微生物群落结构。棕榈仁粕通过丰富亚粒带和增加丁酸产量来增强微生物多样性。在芝麻粕- j中富集的乳酸杆菌丰度与H2S和H2的生成呈负相关，而Megasphaera和Streptococcus与含硫气体和异戊酸的产生呈正相关。芝麻粕- q组半胱氨酸和蛋氨酸功能通路微生物代谢活性提高60.4 %，正向调节H2S排放。本研究通过“营养-微生物-气味排放”的调控框架，揭示了非常规蛋白质饲料成分调控生长猪肠道微生物群发挥营养支持和减少气味作用的机制。为开发环境友好型饲料，减少豆粕用量提供了理论依据。

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引用次数: 0

Regional variability in soil organic carbon responses to chemical fertilizer and manure slurry driven by microbial functional pathways 微生物功能途径驱动下土壤有机碳对化肥和粪肥浆响应的区域变异

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

Environmental Technology & Innovation

Pub Date : 2026-01-07 DOI: 10.1016/j.eti.2026.104750

Xingping Chang , Xiaofei Wang , Huiying Du , Hao Wang , Keqiang Zhang , Lianzhu Du

Soil organic carbon (SOC) dynamics are profoundly influenced by fertilization regimes and regional environmental conditions. In this study, we compared the impacts of chemical fertilizer and manure slurry application on SOC content and microbial functional gene composition across three geographically distinct regions in China: Harbin, Yiyang, and Nanyang. Our results revealed contrasting SOC responses among regions. Manure slurry application significantly enhanced SOC in Harbin, resulting in a 54 % increase compared with chemical fertilizer, mainly due to a pronounced accumulation of particulate organic carbon (POC). In contrast, SOC responses to manure slurry were minor in Yiyang and Nanyang, indicating that fertilization effects on SOC were strongly site-dependent. Metagenomic analyses showed that manure slurry increased the abundance of carbon fixation genes in Harbin, particularly those involved in the reductive pentose phosphate cycle and reductive tricarboxylic acid cycle, which increased by 9.57 % and 6.38 %, respectively. In contrast, manure slurry in Yiyang primarily enhanced genes involved in labile carbon degradation. Integrating soil properties, microbial functional genes, and enzyme activities revealed that fertilization affected SOC mainly through indirect pathways mediated by soil nutrient conditions and microbial functional traits. Changes in soil nutrients were closely associated with shifts in microbial carbon fixation and degradation gene abundances, which were more strongly linked to SOC and POC than to mineral-associated organic carbon. Overall, our findings indicate that the effectiveness of manure slurry versus chemical fertilizer in promoting SOC sequestration is not universal but strongly context-dependent, emphasizing the need for site-specific strategies in sustainable soil carbon management.

土壤有机碳动态受施肥制度和区域环境条件的深刻影响。在本研究中，我们比较了施用化肥和粪肥对中国哈尔滨、益阳和南阳3个不同地理区域土壤有机碳含量和微生物功能基因组成的影响。我们的研究结果揭示了不同地区SOC响应的差异。施用粪肥浆显著提高了哈尔滨市土壤有机碳含量，与化肥相比增加了54. %，这主要是由于颗粒有机碳（POC）的显著积累。益阳和南阳土壤有机碳对粪肥浆的响应较小，表明施肥对土壤有机碳的影响具有强烈的地点依赖性。宏基因组分析表明，肥浆处理增加了哈尔滨油菜固定碳基因的丰度，特别是与还原性戊糖磷酸循环和还原性三羧酸循环相关的基因丰度，分别增加了9.57 %和6.38 %。相比之下，益阳粪肥浆主要增强了参与不稳定碳降解的基因。综合土壤性质、微生物功能基因和酶活性，发现施肥主要通过土壤养分条件和微生物功能性状介导的间接途径影响土壤有机碳。土壤养分的变化与微生物固碳和降解基因丰度的变化密切相关，其与有机碳和有机碳的关系强于与矿物相关有机碳的关系。总体而言，我们的研究结果表明，粪肥浆与化肥在促进有机碳固存方面的有效性不是普遍的，而是强烈依赖于环境的，这强调了可持续土壤碳管理需要针对特定地点的策略。

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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 : 2026-01-07 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

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 : 2026-01-07 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

Gas-phase release of 6PPD from tire materials under friction-relevant thermal conditions 在与摩擦相关的热条件下，轮胎材料中6PPD的气相释放

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

Environmental Technology & Innovation

Pub Date : 2026-01-07 DOI: 10.1016/j.eti.2026.104746

Min-Seok Choi , Sung-Hwan Kim , Yong-Hyun Kim

N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD) and its toxic oxidation product, 6PPD-quinone, are emerging environmental contaminants of global concern. While current research primarily focuses on particle-bound pathways, the potential for gas-phase release from tire materials under friction-induced thermal conditions remains poorly quantified. This gas-phase pathway is critical as it may facilitate rapid atmospheric conversion to 6PPD-quinone, contributing to complex near-field exposure risks. This study investigated the temperature dependence of gaseous 6PPD emissions using thermal desorption as a proxy for tire-road thermal regimes. Fragments of new tires, used tires, and recycled rubber products were heated isothermally (150–220°C) under an inert gas purge. For new tire fragments, significant emissions began at 190°C and exhibited a sharp, linear increase with temperature (R² > 0.9999). Detectable, albeit lower, temperature-responsive emissions were also observed in tires aged five years and in recycled playground mats, confirming the persistence of releasable 6PPD. Arrhenius-based extrapolation to a representative on-road surface temperature of 60°C suggests a lifetime cumulative gas-phase release of up to 0.543 g per tire. This magnitude is comparable to estimates of the particle-bound pathway (∼1 g per tire). However, it must be noted that these values are derived from accelerated high-temperature tests and represent an upper-bound emission potential; actual on-road fluxes will be influenced by specific aerodynamic and oxidative boundary conditions. Nonetheless, these findings indicate that the gas-phase pathway is likely significant and warrants inclusion in future exposure and risk assessment frameworks.

N-（1,3-二甲基丁基）-N′-苯基-对苯二胺（6PPD）及其有毒氧化产物6PPD-醌是全球关注的新兴环境污染物。虽然目前的研究主要集中在颗粒结合途径上，但在摩擦引起的热条件下，轮胎材料释放气相的可能性仍然很少量化。这种气相途径至关重要，因为它可以促进大气快速转化为6ppd -醌，从而导致复杂的近场暴露风险。本研究使用热解吸作为轮胎-道路热状态的代理，研究了气体6PPD排放的温度依赖性。新轮胎、旧轮胎和回收橡胶制品的碎片在惰性气体吹扫下等温加热（150-220°C）。对于新的轮胎碎片，在190°C时开始显著排放，并随温度呈急剧线性增加（R2 > 0.9999）。在使用五年的轮胎和回收的操场垫子中也观察到可检测到的温度响应性排放，尽管较低，这证实了可释放的6PPD的持久性。基于arrhenius的外推法表明，60°C的代表性路面温度表明，每个轮胎的终生累积气相释放量高达0.543 g。这一量级与粒子结合途径的估计相当（每轮胎约1 g）。然而，必须指出的是，这些值是从加速高温试验中得出的，代表了排放潜力的上限；具体的空气动力学和氧化边界条件会影响实际的道路通量。尽管如此，这些发现表明，气相途径可能是重要的，值得纳入未来的暴露和风险评估框架。

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引用次数: 0

Unravelling the mechanism of phytoremediation to Pb and Cd in Euonymus japonicus Thunb. using biophysiological, transcriptomic and metabolomic analyses 日本卫矛植物对Pb和Cd的修复机制研究。使用生物生理学，转录组学和代谢组学分析

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

Environmental Technology & Innovation

Pub Date : 2026-01-06 DOI: 10.1016/j.eti.2025.104737

Haolang Liu , Yongwei Gong , Yuqi Qi , Yu Wang

Urban heavy metals (HMs) contamination necessitates sustainable eco-remediation for ecological-health security. Urban green plants are overlooked sinks for HMs, yet their molecular remediation mechanisms remain elusive. Here, we elucidate the physiological and molecular responses of Euonymus japonicus Thunb. to lead (Pb) and cadmium (Cd). Results demonstrate that E. japonicus Thunb. exhibits high tolerance to Pb and Cd (tolerance index > 60), with predominant sequestration of these metals in root tissues (580.0 mg·kg⁻¹ and 83.1 mg·kg⁻¹, respectively, under high concentrations of HMs), inducing ultrastructural alterations. Detoxification under severe stress is mediated by catalase and peroxidase, rather than superoxide dismutase or glutathione. Transcriptomic analysis revealed upregulation of 15 core genes associated with detoxification, including ABCG4, ZnT2, and Nramp3. Metabolomic analysis revealed that root cells remodeled their metabolic regulation, including the following three aspects: (I.) amino acids and peptides (such as glycyl-phenylalanine, glutamyltyrosine, and betonicine); (II.) flavonoids (including catechin, myricetin, and persiconin); and (III.) lignan glycosides (such as occidentoside and ramontoside), thereby orchestrating stress adaptation. Multiomics analysis indicates that protein synthesis, processing, and regulation, involving amino acids, ribosomes, and the endoplasmic reticulum, along with the reprogramming of the sugar co-metabolism network and plant adaptation and stress regulation, collectively contribute to the detoxification process under Pb and Cd stress. These findings indicate that E. japonicus Thunb. serves as a root-accumulating plant capable of stabilizing HMs in soils severely co-contaminated with Pb and Cd, highlighting its potential for sustainable phytostabilization in urban environments.

城市重金属污染需要可持续的生态修复来保障生态健康安全。城市绿色植物是被忽视的HMs汇，但其分子修复机制尚不明确。本文对日本卫矛的生理和分子反应进行了研究。铅（Pb）和镉（Cd）结果表明：黄芪；表现出对铅和镉的高耐受性（耐受性指数>； 60），这些金属主要在根组织中被吸收（在高浓度的HMs下，分别为580.0 mg·kg⁻¹和83.1 mg·kg⁻¹），引起超微结构的改变。严重应激下的解毒是由过氧化氢酶和过氧化物酶介导的，而不是超氧化物歧化酶或谷胱甘肽。转录组学分析显示15个与解毒相关的核心基因上调，包括ABCG4、ZnT2和Nramp3。代谢组学分析表明，根细胞的代谢调节发生了重塑，包括以下三个方面：(1)氨基酸和多肽（如甘酰苯丙氨酸、谷氨酰基酪氨酸和倍桃碱）；（II）黄酮类化合物（包括儿茶素、杨梅素和persiconin）；（III）木脂素苷（如西花楸苷和雷蒙花苷），从而协调应激适应。多组学分析表明，蛋白质的合成、加工和调控，包括氨基酸、核糖体和内质网，以及糖共代谢网络的重编程和植物适应和胁迫调节，共同参与了铅和镉胁迫下的解毒过程。这些结果表明，日本黄颡鱼属。作为一种根系积累植物，能够稳定铅镉严重共污染土壤中的土壤有机质，突出了其在城市环境中可持续植物稳定的潜力。

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引用次数: 0