Journal of Hazardous Materials最新文献_第6页

Air pollution drives community assembly of abundant and rare microbial taxa in urban PM2.5 空气污染促使城市PM2.5中丰富而稀有的微生物类群群落聚集

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.jhazmat.2026.141074

Yuanyuan Pan, Xin Ke, Qiang Chen, Xinping Xiao, Zhiwei Zuo

Environmental microbial communities typically exhibit unbalanced distribution, characterized by a few abundant species coexisting with a multitude of rare species. However, few attentions were paid to the abundant and rare taxa in airborne microbial community. Here, we explored the distribution pattern, assembly mechanisms, and ecological roles of airborne bacterial and fungal communities, including pathogens. Daily sampling was conducted over a one-month period in Nanchang, China. Our results found out the uneven distribution of airborne microbial community. Compared with rare taxa, abundant taxa, exhibited broader niche widths, more ubiquitous distribution and stronger correlations with environmental factors. Stochastic processes dominated the assembly of abundant taxa, whereas deterministic processes governed the assembly of rare taxa. Air pollutants (PM_2.5, PM₁₀, NO₂, etc.) were identified as key factors regulating the assembly of bacterial subcommunities, but had no significant influence on that of fungal subcommunities. Co-occurrence network analysis indicated that abundant species played a more critical role in maintaining the community stability in the atmosphere. Potential pathogens were mainly distributed in abundant taxa. Notably, dominant pathogens like Staphylococcus aureus (0.62 %) and Nigrospora sps. (15.72 %) were unpredicted by neutral community model and showed strong correlations with environmental factors. Overall, our findings provide insights into the ecological mechanisms structuring airborne microbial communities, with particular implications for understanding pathogenic microorganisms.

环境微生物群落通常呈现不平衡分布的特点，即少数丰富的物种与大量稀有的物种共存。然而，空气微生物群落中丰富而稀有的类群却很少受到重视。在此，我们探讨了空气中细菌和真菌群落（包括病原体）的分布格局、组装机制和生态作用。在中国南昌市进行了为期一个月的每日抽样。我们的结果发现空气微生物群落分布不均匀。与稀有类群相比，丰富类群的生态位宽度更宽，分布更普遍，与环境因子的相关性更强。丰富类群的组合受随机过程的支配，而稀有类群的组合受确定性过程的支配。空气污染物（PM2.5、PM10、NO2等）是调节细菌亚群落聚集的关键因子，但对真菌亚群落的影响不显著。共现网络分析表明，丰富的物种在维持群落稳定中起着更为关键的作用。潜在病原体主要分布在丰富的分类群中。值得注意的是，优势病原体如金黄色葡萄球菌（0.62 %）和黑孢菌。（15.72 %）与环境因子有较强的相关性。总的来说，我们的研究结果为构建空气微生物群落的生态机制提供了见解，对理解致病微生物具有特殊意义。

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引用次数: 0

Fusarium oxysporum f. sp. niveum invasion promotes Pseudomonas-driven antibiotic resistance gene enrichment 尖孢镰刀菌入侵促进假单胞菌驱动的抗生素耐药基因富集

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.jhazmat.2026.141084

Haiyan Wu , Jiahui Shen , Hongyuan Zhang , Qirui Fang , Tongtong Zhu , Jun Yuan , Qirong Shen , Chao Xue

The dissemination of antibiotic resistance genes (ARGs) in agricultural soils poses a growing threat to ecosystem health and food security, highlighting the need to identify key environmental drivers. Although soil-borne phytopathogens disrupt microbial communities, their specific impact on ARG dynamics remains poorly understood. In this study, we examined how Fusarium oxysporum f. sp. niveum (FON) invasion changes soil ARG profiles. Our results indicate that increasing FON loads heighten the abundances of soil ARGs, virulence factor genes (VFGs), and mobile genetic elements (MGEs). This invasion significantly transformed rhizosphere bacterial communities by enriching Pseudomonas populations. We further identified Pseudomonas-driven mechanisms that involve functional adaptations such as SOS response activation and enhanced biofilm formation. Genomic features, including vertically inherited ARGs (e.g., mexF/T/W, bacA) and horizontal gene transfer (HGT) elements tnpA transpositions, along with ecological interactions such as growth-supporting metabolic exchanges, collectively fueled ARG enrichment and dissemination. Pseudomonas strains exhibited prevalent multidrug resistance (MDR) and further promoted the enrichment of antibiotic-resistant bacteria (ARB) through growth - supporting metabolic interactions. An analysis of 689 Pseudomonas genomes from diverse habitats revealed that nearly all genomes contain multiple ARGs, VFGs, and MGEs, suggesting that Pseudomonas proliferation significantly contributes to ARG dissemination. Our findings establish FON load as a critical driver of resistome dissemination by selectively enriching multi-resistant Pseudomonas reservoirs and activating key resistance-enhancing mechanisms within these reservoirs. These results offer mechanistic insights for managing antimicrobial resistance risks in agroecosystems.

抗生素耐药基因（ARGs）在农业土壤中的传播对生态系统健康和粮食安全构成越来越大的威胁，这凸显了确定关键环境驱动因素的必要性。虽然土壤传播的植物病原体会破坏微生物群落，但它们对ARG动态的具体影响仍知之甚少。本文研究了镰刀菌（Fusarium oxysporum f. sp. niveum， FON）入侵对土壤ARG谱的影响。结果表明，随着FON负荷的增加，土壤ARGs、毒力因子基因（vfg）和移动遗传因子（MGEs）的丰度增加。这种入侵通过丰富假单胞菌种群显著地改变了根际细菌群落。我们进一步确定了假单胞菌驱动的机制，包括功能适应，如SOS反应激活和增强的生物膜形成。基因组特征，包括垂直遗传的ARG（如mexF/T/W， bacA）和水平基因转移（HGT）元件tnpA转位，以及支持生长的代谢交换等生态相互作用，共同促进了ARG的富集和传播。假单胞菌表现出普遍的多药耐药（MDR），并通过支持生长的代谢相互作用进一步促进耐药菌（ARB）的富集。对来自不同生境的689个假单胞菌基因组的分析表明，几乎所有假单胞菌基因组都含有多个ARGs、vfg和MGEs，这表明假单胞菌的增殖对ARG的传播有重要作用。我们的研究结果表明，通过选择性地富集多耐药假单胞菌库并激活这些库中的关键抗性增强机制，FON负荷是抗性组传播的关键驱动因素。这些结果为管理农业生态系统中抗菌素耐药性风险提供了机制见解。

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引用次数: 0

Ultra-high SERS-active nanowires-PTFE composite substrate for trace detection of Aflatoxin B1 in aquaculture water 超高sers活性纳米线- ptfe复合衬底用于水产养殖水中黄曲霉毒素B1的痕量检测。

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.jhazmat.2026.141103

Liu Wang , Jie Han , Liangyan Sun , Jinru Feng , Xiaohan Lin , Daoliang Li , Cong Wang

Aflatoxin B₁ (AFB₁), a potential carcinogen distributed in aquaculture systems, threatens aquatic health and food safety. However, current methods for detecting AFB1 in aquaculture water still rely on time-consuming sample pretreatment and costly large-scale instruments. Herein, we developed a high-performance surface-enhanced Raman scattering (SERS) sensor based on ultra-active silver nanowires (U-AgNWs) for AFB₁ quantification in aquaculture water. PTFE substrate with hydrophobic condensation effect were selected to enhance SERS signal. Self-assembled AgNWs at the three-phase (oil-water-gas) interface were added onto the PTFE substrate. Subsequently, AgNWs were etched with aqua regia to increase surface roughness. Following iterative refinement, a novel PTFE substrate with remarkable SERS activity was successfully fabricated. This hybrid structure with significant SERS enhancement had been validated through FDTD simulation, and subsequent experiments had confirmed that the sensor had anti-interference, reproducibility, and repeatability. The sensor exhibited excellent linearity (R² > 0.97) for AFB₁ within the range of 0.1ng/mL-10⁴ng/mL and had satisfactory performance in aquaculture with recoveries of 97.3 %-103.2 % (reference HPLC/LM-MS). This sensor provides a simple, highly sensitive, and selective strategy for the timely detection of AFB₁ in aquaculture, thus contributing to the security of aquatic products, the safeguarding of ecosystems, and the protection of public health. And this work also paved a way for developing facile devices to detect antibiotics, heavy metals, and other targets.

黄曲霉毒素B1 （AFB1）是一种分布在水产养殖系统中的潜在致癌物，威胁着水产健康和食品安全。然而，目前检测水产养殖水体中AFB1的方法仍然依赖于耗时的样品预处理和昂贵的大型仪器。在此，我们开发了一种基于超活性银纳米线（U-AgNWs）的高性能表面增强拉曼散射（SERS）传感器，用于水产养殖水中AFB1的定量分析。选择具有疏水凝结效应的聚四氟乙烯基片增强SERS信号。将三相（油水-气）界面自组装的AgNWs添加到聚四氟乙烯基板上。随后，用王水蚀刻AgNWs以增加表面粗糙度。经过反复改进，成功制备了具有显著SERS活性的新型PTFE基板。通过FDTD仿真验证了这种具有明显SERS增强的混合结构，随后的实验证实了该传感器具有抗干扰性、再现性和可重复性。该传感器对AFB1在0.1ng/mL ~ 104ng/mL范围内具有良好的线性关系（R²> 0.97），在水产养殖中具有良好的效果，回收率为97.3% % ~ 103.2 %（参考HPLC/LM-MS）。该传感器为水产养殖中AFB1的及时检测提供了一种简单、高灵敏度和选择性的策略，从而为水产品的安全、生态系统的保护和公众健康的保护做出了贡献。这项工作也为开发检测抗生素、重金属和其他目标的简易设备铺平了道路。

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引用次数: 0

Chronic exposure to environmentally relevant doses of butyl benzyl phthalate promotes development of breast tumor Via the tricarboxylic acid cycle and fatty acid β -oxidation 长期暴露于环境相关剂量的邻苯二甲酸丁苄酯通过三羧酸循环和脂肪酸β -氧化促进乳腺肿瘤的发展

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.jhazmat.2026.141089

Canrong Chen , Yajing Zhang , Jinni Zhang , Wen Xie , Hang Su , Yanhui Zhong , Zian Lin , Zongwei Cai

Phthalates, such as butyl benzyl phthalate (BBP), are widely detected in the environment and confirmed to exhibit estrogenic effects. However, their health risks toward breast tumor (BT) under real environmental conditions remained unclear. This study systematically investigated BBP-related health risks for BT by integrating in vitro assays with chronic exposure mouse models at environmentally relevant concentrations. The mechanisms were further investigated using metabolomics and lipidomics approaches. In vitro experiments demonstrated BBP and its metabolites (monobutyl phthalate and monobenzyl phthalate) enhanced 4T1 cell proliferation (cell viability ratio ≥1.2). In animal experiments, tumor volumes in the Low-dose (0.2 mg/kg/day) and High-dose (20 mg/kg/day) groups increased to 2.82-fold and 4.84-fold of the control group, respectively. Integrated metabolomics and lipidomics analysis revealed that BBP induced glycerolipids (GLs) hydrolysis into fatty acids (FAs), while upregulating fatty acid β-oxidation and TCA cycle activity. Acetyl-CoA derived from β-oxidation enhanced TCA cycle flux, which provided energy for pyrimidine metabolism and promoted tumor growth. This study firstly provided comprehensive assessment of BBP's health risks for BT under realistic exposure scenarios, offering mechanistic insights to support phthalate regulation and environmental management.

邻苯二甲酸酯，如邻苯二甲酸丁苄酯（BBP），在环境中被广泛检测到，并证实具有雌激素效应。然而，在真实环境条件下，它们对乳腺肿瘤（BT）的健康风险尚不清楚。本研究通过结合体外实验和环境相关浓度的慢性暴露小鼠模型，系统地调查了bp相关的BT健康风险。利用代谢组学和脂质组学方法进一步研究了其机制。体外实验表明，BBP及其代谢物（邻苯二甲酸一丁酯和邻苯二甲酸一苯酯）可促进4T1细胞增殖（细胞存活率≥1.2）。动物实验中，低剂量组（0.2 mg/kg/d）和高剂量组（20 mg/kg/d）肿瘤体积分别增加到对照组的2.82倍和4.84倍。综合代谢组学和脂质组学分析显示，BBP诱导甘油脂（GLs）水解成脂肪酸（FAs），同时上调脂肪酸β-氧化和TCA循环活性。β-氧化生成的乙酰辅酶a增强了TCA循环通量，为嘧啶代谢提供能量，促进肿瘤生长。本研究首次全面评估了实际暴露情景下BBP对BT的健康风险，为邻苯二甲酸盐监管和环境管理提供了机制见解。

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引用次数: 0

Quorum sensing inhibition: A novel mechanism for ferrate-mediated removal of antibiotic resistance genes in swine wastewater 群体感应抑制：高铁酸盐介导的去除猪废水中抗生素抗性基因的新机制

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.jhazmat.2026.141102

Wang Wang , Liqi Wang , Maoyong Yu, Zhong Wang

The widespread occurrence of antibiotic resistance genes (ARGs) in the environment poses a severe threat to public health, with swine wastewater (SW) being a significant reservoir. Current technologies show limited efficacy in ARGs removal. This study evaluated the efficacy, long-term durability, and safety of ferrate (Fe(Ⅵ)) in removing clinically important ARGs (i.e., cfr, optrA, poxtA, efrA) from SW. The removal of ARGs were quantified via qPCR. The underlying mechanisms were systematically investigated through measurements of reactive oxygen species (ROS), antioxidant responses, membrane permeability, extracellular DNA (eDNA), biofilm formation (BF), Autoinducer-2 (AI-2) activity, and its synthase gene (pfs) abundance, with validations using ROS scavenger, exogenous AI-2 addition, and a cfr-positive E. coli pure culture. Water quality parameters and acute toxicity (using Vibrio fischeri) were measured for the treated samples to assess the potential environmental risk. Results indicated that Fe(Ⅵ) (40–160 mg/L) exhibited concentration-dependent removal of the ARGs without rebound within 30d post-treatment or acute toxicity, with 160 mg/L being optimal. This may be achieved through the synergy of direct oxidation and oxidative stress (OS), which concurrently caused (1) host neutralization: halting ARGs replication and dissemination through bacterial inactivation; (2) eDNA release: promoting the release of ARGs-carrying eDNA via cell membrane damage and lysis, thereby increasing the possibility of ARGs exposure and degradation; and (3) quorum sensing inhibition (QSI): disrupting BF by decreasing AI-2 activity and pfs abundance, which may prevent the environmental accumulation of ARGs and suppress their horizontal transfer. AI-2-mediated quorum sensing was identified as a novel strategic target for ARGs control in SW.

抗生素耐药基因（ARGs）在环境中的广泛存在对公众健康构成了严重威胁，猪废水（SW）是一个重要的水库。目前的技术对ARGs的去除效果有限。本研究评估了高铁酸盐（Fe（Ⅵ））去除SW中临床上重要的ARGs（即cfr、optrA、poxtA、efrA）的有效性、长期耐久性和安全性。通过qPCR定量检测ARGs的去除情况。通过测量活性氧（ROS）、抗氧化反应、膜通透性、细胞外DNA （eDNA）、生物膜形成（BF）、自诱导物-2 （AI-2）活性及其合成酶基因（pfs）丰度，系统地研究了潜在的机制，并使用ROS清除剂、外源AI-2添加和cfr阳性的大肠杆菌纯培养进行了验证。对处理后的样品进行水质参数和急性毒性（使用费氏弧菌）测定，以评估潜在的环境风险。结果表明，Fe（Ⅵ）（40 ~ 160mg/L）对ARGs的去除率呈浓度依赖性，在处理后30d内无反弹或急性毒性，其中160mg/L为最佳。这可以通过直接氧化和OS的协同作用来实现，这同时导致(1)宿主中和：通过细菌失活阻止ARGs的复制和传播；(2) eDNA释放：通过细胞膜损伤和裂解促进携带ARGs的eDNA释放，从而增加ARGs暴露和降解的可能性；(3) QSI：通过降低AI-2活性和pfs丰度来破坏BF，从而阻止ARGs的环境积累并抑制其水平转移。ai -2介导的群体感应被确定为SW中ARGs控制的新战略目标。

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引用次数: 0

Multi-omic analysis reveals the microecological mechanism of organic arsenic toxicity in a Japanese abandoned chemical weapons site and targeted bioremediation strategies 多组学分析揭示了日遗化武遗址有机砷毒性的微生态机制和靶向生物修复策略

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.jhazmat.2026.141101

Xu YANG , Xiao-hui JI , Chen LI , Jin-long LAI , Xue-gang LUO

Diphenylarsonic acid (DPAA) and phenylarsonic acid (PAA), persistent degradation products of Japanese abandoned chemical weapons (JACWs), threaten aquatic ecosystems. However, their microecological toxicity mechanisms and effective remediation strategies remain poorly understood. Here, we constructed 60-day freshwater microcosms to systematically reveal the toxic effects of DPAA and PAA using integrated multi-omics. We found that both pollutants exhibited extreme persistence (> 98 % residue) and triggered a microbial energy crisis by specifically disrupting the oxidative phosphorylation pathway, with up to 46 genes in the NADH dehydrogenase complex significantly downregulated. Multi-omics integration identified cysteine and methionine metabolism as the central hub of metabolic network disturbance, impairing sulfur cycling and methyl donor supply. Furthermore, pollutant stress activated the viral community and increased antibiotic resistance gene abundance, revealing latent ecological risks. Crucially, guided by these mechanistic insights, we successfully screened a Bacillus subtilis strain from the stressed environment and immobilized it on bamboo biochar to create a novel composite remediation agent. This agent achieved complete mineralization of DPAA and PAA within 5 days, a process associated with the significant upregulation of nine key dioxygenases. Our study not only deciphers the microecological toxicity mechanisms of JACW-related organic arsenicals but also demonstrates a mechanism-informed strategy for developing effective in situ bioremediation.

二苯拉森克酸（DPAA）和苯拉森克酸（PAA）是日遗化学武器的持久性降解产物，对水生生态系统构成严重威胁。然而，它们的微生态毒性机制和有效的修复策略尚不清楚。在这里，我们构建了60天的淡水微生物，利用综合多组学技术系统地揭示了DPAA和PAA的毒性作用。我们发现，这两种污染物都表现出极强的持久性（>； 98% %残留），并通过特异性破坏氧化磷酸化途径引发微生物能量危机，NADH脱氢酶复合物中多达46个基因显著下调。多组学整合发现，半胱氨酸和蛋氨酸代谢是代谢网络紊乱的中心枢纽，损害硫循环和甲基供体供应。此外，污染物胁迫激活了病毒群落，增加了抗生素抗性基因的丰度，揭示了潜在的生态风险。重要的是，在这些机制的指导下，我们成功地从应激环境中筛选了枯草芽孢杆菌菌株，并将其固定在竹生物炭上，以创建一种新型的复合修复剂。该药物在5天内实现了DPAA和PAA的完全矿化，这一过程与9个关键双加氧酶的显著上调有关。我们的研究不仅揭示了jacw相关有机砷的微生态毒性机制，而且为开发有效的原位生物修复提供了一种机制知情的策略。

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引用次数: 0

Microbial levels and diversity in bioaerosols from electronic waste dismantling facilities 电子废物拆解设施产生的生物气溶胶中的微生物水平和多样性

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.jhazmat.2026.141099

Jie Lu, Zhongyan Tan, Chengyun Li, Yufan Tang, Jie Guo

Bioaerosols emitted from electronic waste dismantling facilities pose a potential occupational and environmental health hazard due to their complex composition and associated pathogenic risks. However, comprehensive assessments of their microbial dynamics and inhalation exposure risks remain limited. This study systematically investigated the concentrations, size distributions, community structures, and exposure levels of bacterial and fungal aerosols across different functional areas of an e-waste recycling plant in Shanghai over winter and spring seasons. Results revealed that the dismantling and crushing workshops were primary sources of bioaerosols, with significantly elevated concentrations in spring. Size distribution analysis showed a predominant enrichment of microbial particles in the respirable size fractions ( 2.1–0.65 μm). Microbial community analysis identified Firmicutes and Bacillus as the dominant bacterial phylum and genus, while Ascomycota, Aspergillus and Penicillium prevailed among fungi. Notably, several enriched species, including Aspergillus flavus and Penicillium citrinum, are known potential mycotoxin producers, highlighting a direct health threat. Seasonal variation accounted for only a small proportion of the variation in microbial community structure; however, the exposure assessment indicated higher average daily dose (ADD) and hazard quotient (HQ) in spring, particularly in high-activity workshops. Although all HQ values were below the risk threshold (HQ = 1), the elevated exposure levels in key areas during spring underscore the necessity for enhanced engineering controls and personal protective equipment, especially for male workers facing relatively higher risks.

电子废物拆解设施排放的生物气溶胶由于其复杂的成分和相关的致病风险，构成潜在的职业和环境健康危害。然而，对其微生物动力学和吸入暴露风险的全面评估仍然有限。本研究系统调查了上海某电子垃圾回收厂不同功能区冬季和春季细菌和真菌气溶胶的浓度、大小分布、群落结构和暴露水平。结果表明，拆解和粉碎车间是生物气溶胶的主要来源，春季浓度显著升高。粒径分布分析表明，微生物颗粒主要富集在2.1 ~ 0.65 μm的可吸入粒径段。微生物群落分析发现厚壁菌门和芽孢杆菌为优势菌门和属，菌类以子囊菌门、曲霉门和青霉门为主。值得注意的是，包括黄曲霉和柠檬青霉在内的一些富集物种是已知的潜在霉菌毒素生产者，这突出表明了对健康的直接威胁。季节变化只占微生物群落结构变化的很小比例；暴露评价结果显示，春季，特别是高活性车间，平均日剂量（ADD）和危害商数（HQ）较高。虽然所有的HQ值都低于风险阈值（HQ = 1），但春季重点地区暴露水平升高强调了加强工程控制和个人防护装备的必要性，特别是对面临相对较高风险的男性工人。

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引用次数: 0

Multi-omics assessment of synthetic microbiome-mediated remediation of cyclotetramethylene tetranitroamine (HMX) contaminated water 合成微生物介导的环四亚甲基四硝胺（HMX）污染水体修复的多组学评价

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials

Pub Date : 2026-01-08 DOI: 10.1016/j.jhazmat.2026.141026

Xu Yang , Xiao-hui Ji , Chen Li , Jin-long Lai , Xue-gang Luo

Cyclotetramethylene tetranitroamine (HMX) is a typical high-energy nitramine pollutant with an environmental persistence and toxic effects that pose serious ecological risks. In this study, a synthetic microbiome with complementary functions is built that enables the integration of multigroup technology to conduct a systematic analysis of the mechanism of remediation of HMX-contaminated water bodies. Four core bacterial strains (Bacillus altitudinis, B. cereus, B. subtilis, and Pseudomonas stutzeri) were directionally domesticated and screened from HMX-contaminated water. Through functional verification, they were confirmed to express key enzymes NfsA, YdhA, FdhA, and NirS, respectively, to form a complete HMX deep degradation–level connection path. The synthetic microbiome achieved 100 % removal of HMX and its intermediates within 60 days, and isotope tracing (δ¹⁵N enrichment +2.7 ‰) confirmed its complete mineralization ability. Multiomic analysis showed that the restoration process is accompanied by a systematic reshaping of the water microecology and chemical environment, so that the microbial community structure is optimized and the synthetic microbiome is successfully colonized and becomes the core node. Meanwhile, the energy metabolic network (glycolysis, TCA cycle, oxidative phosphorylation) is significantly enhanced; metagenomic data also revealed reduced viral abundance. Ionomics revealed that key nutrient elements, such as P and S, are efficiently assimilated and utilized. These findings identify an efficient HMX bioremediation strategy that utilizes the multiple dimensions of “community structure–metabolic function–environmental effects” through a multigroup integration framework. More importantly, this study provides a theoretical basis and practical paradigm for the rational design of functional microbial communities.

环四亚甲基四硝胺（HMX）是一种典型的高能硝胺类污染物，具有环境持久性和毒性效应，具有严重的生态风险。本研究通过构建功能互补的合成微生物组，整合多群技术，对hmx污染水体的修复机制进行系统分析。从hmx污染水体中定向驯化并筛选了4种核心菌株（高原芽孢杆菌、蜡样芽孢杆菌、枯草芽孢杆菌和假单胞菌）。通过功能验证，确认它们分别表达关键酶NfsA、YdhA、FdhA和NirS，形成完整的HMX深度降解级连接路径。合成微生物组在60天内对HMX及其中间体的去除率达到100% %，同位素示踪（δ15N富集+2.7 ‰）证实其完全矿化能力。Multiomic分析表明，修复过程伴随着水体微生态和化学环境的系统重塑，使微生物群落结构得到优化，合成微生物组成功定殖，成为核心节点。同时，能量代谢网络（糖酵解、TCA循环、氧化磷酸化）显著增强；宏基因组数据也显示病毒丰度降低。研究表明，土壤中磷、硫等关键营养元素被有效吸收和利用。这些发现确定了一种有效的HMX生物修复策略，该策略通过多群体整合框架利用“群落结构-代谢功能-环境效应”的多个维度。更重要的是，本研究为功能性微生物群落的合理设计提供了理论依据和实践范式。

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引用次数: 0

Process intensification of phenol recovery via carrier-conducted membrane electrodialysis with improved transport and selectivity control 载体传导膜电渗析回收苯酚的过程强化及转运和选择性控制

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials

Pub Date : 2026-01-08 DOI: 10.1016/j.jhazmat.2026.141096

Huihui Xie , Chenghao Qu , Xin Wang , Hongrui Li , Zihao Liu , Zihan Qin , Qiaochu Liang , Yang Liu , Yang Zhang

The recovery of phenolic compounds from industrial wastewater as value-added chemicals is essential for sustainable economic development and ecological environment safety. Conventional solvent extraction requires stepwise stripping, and electrodialysis is seldom applied to organic pollutants because commercial ion-exchange membranes are primarily designed for inorganic ions. Here, an electrodialysis-integrated carrier-conducted membrane (CCMED) incorporating trioctylmethyl ammonium chloride as the carrier was developed for phenol recovery. The CCMED system exhibited a substantial enhancement in transport performance, with the phenol permeability coefficient increasing from 1.74 μm·s⁻¹ without an electric field to 17.26 μm·s⁻¹ at a current density of 20 mA·cm⁻². Phenolate anion transport, predominant at an alkaline condition (pH > 9), was strongly affected by solution pH and competing salt ions. Under optimum conditions, the extraction and stripping efficiencies reached 87.93 % and 80.63 %, respectively, and the phenol permeability coefficient was two times higher than that of a commercial anion exchange membrane (Astom-AGU). Furthermore, pH adjustment suggested a potential route for selective separation of phenol and other phenolic compounds by maintaining phenol in molecular form while converting nitrophenol to an ionic state. This study demonstrated the potential of CCMED as a process-intensified strategy for efficient phenol recovery and selective separation of phenolic compounds.

从工业废水中回收酚类化合物作为增值化学品对经济可持续发展和生态环境安全至关重要。传统的溶剂萃取需要逐步剥离，电渗析很少应用于有机污染物，因为商业离子交换膜主要是为无机离子设计的。本文研究了以三辛甲基氯化铵为载体的电渗析集成载体传导膜（CCMED）用于苯酚的回收。在没有电场的情况下，CCMED系统的苯酚渗透系数从1.74 μm·s⁻¹增加到在电流密度为20 mA·cm-2时的17.26 μm·s⁻¹。在碱性条件下（pH > 9），苯酚阴离子的输运受到溶液pH和竞争盐离子的强烈影响。在最优条件下，苯酚的萃取效率和剥离效率分别达到87.93%和80.63%，苯酚的渗透系数比商用阴离子交换膜（atom - agu）提高了2倍。此外，pH调节提示了苯酚和其他酚类化合物选择性分离的潜在途径，即保持苯酚的分子形态，同时将硝基苯酚转化为离子状态。该研究证明了CCMED作为一种高效苯酚回收和选择性分离酚类化合物的过程强化策略的潜力。

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引用次数: 0

Cobalt single-atom/cluster synergy for precision water decontamination: Unlocking a nearly 100 % electron-transfer pathway in peroxymonosulfate activation 精确水净化的钴单原子/簇协同作用：解锁过氧单硫酸盐活化中近100 %的电子转移途径

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials

Pub Date : 2026-01-08 DOI: 10.1016/j.jhazmat.2026.141095

Jian Chen , Xin Liu , Aji JiKe , Zaiyu Liu , Lilei Zhang , Zhaoyu Jin , Fenglin Tang , Xiupei Yang

Precisely modulating electronic and coordination structures of Fenton-like catalysts to achieve electron transfer pathway (ETP)-dominated oxidation remains challenging. Herein, a CoN₃/Co_NP hybrid catalyst was constructed for the effective activation of peroxymonosulfate (PMS), which mediated primarily through a dominant electron transfer process (ETP). Notably, CoN₃/Co_NP/PMS achieved ultra-rapid and complete degradation of phenol (20 mg/L within 3 min) with an ultralow catalyst dosage (20 mg/L), leading to efficient detoxification and a 72.4 % mineralization rate through ETP-driven polymerization and hydroxylation. Mechanism studies confirmed an inner-sphere ETP process with high selectivity toward electron-rich organics and strong anti-interference capability over a wide pH range. DFT calculations further revealed that Co nanoclusters remarkably enhanced electron density and upshift the d-band center, thereby together strengthening PMS adsorption and facilitating electron transfer. This work offers a new approach to designing synergistic single-atom/cluster catalysts for highly selective pollutant degradation.

精确调节类芬顿催化剂的电子和配位结构以实现电子转移途径（ETP）主导的氧化仍然是一个挑战。本文构建了一种CoN3/CoNP杂化催化剂，用于有效激活过氧单硫酸盐（PMS），该催化剂主要通过显性电子转移过程（ETP）介导。值得注意的是，在超低催化剂用量（20 mg/L）下，CoN3/CoNP/PMS在3 min内实现了对苯酚的超快速和完全降解（20 mg/L），通过etp驱动的聚合和羟基化，实现了高效的脱毒和72.4 %的矿化率。机理研究证实了内球ETP过程对富电子有机物具有高选择性，且在较宽的pH范围内具有较强的抗干扰能力。DFT计算进一步表明，Co纳米团簇显著提高了电子密度，并使d带中心上移，从而加强了PMS的吸附，促进了电子转移。这项工作为设计用于高选择性污染物降解的协同单原子/簇催化剂提供了一种新的方法。

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引用次数: 0