Journal of Environmental Chemical Engineering最新文献_第7页

Response of vegetation restoration and soil reconstitution to coupled manure application in alpine mining areas: A comprehensive assessment 高寒矿区植被恢复与土壤重建对施肥耦合响应的综合评价

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-14 DOI: 10.1016/j.jece.2026.121177

Zhongyang Yu , Changhui Li , Mingchun Yang , Guoning Jing , Jianing Li , Jianli Wu

Fertilization and grassland reconstruction are vital for restoring alpine mining areas, yet the combined effects of sheep manure and commercial organic fertilizer on plant communities, soil properties, and microbial composition in artificial grasslands remain unclear. This study evaluated six fertilization treatments—CK (no fertilization), S (100 % sheep manure), F (100 % organic fertilizer), M1 (60 % sheep manure + 40 % organic fertilizer), M2 (50 % + 50 %), and M3 (40 % + 60 %)—in an artificial grassland established in 2021 in the Muli mining area, Qinghai Province. Sampling and high-throughput sequencing were conducted in 2024. After four years, fertilization significantly altered plant community structure, soil chemical traits, and microbial composition and function. Above-ground biomass, Shannon-Wiener index, Pielou index, and Simpson index under M1 treatment were significantly higher than other treatments, exceeding the control group by 223.03 %, 4.23 %, 12.20 %, and 15.67 %, respectively. Moreover, M1 significantly enhanced total nitrogen, total phosphorus, available nitrogen, available phosphorus, and organic matter content, with respective increases of 90.70 %, 169.61 %, 504.43 %, 251.24 %, and 391.00 % compared to the control. While M1 treatment led to significant reductions in the bacterial community's Sobs, Ace, and Chao indices, it markedly increased these indices within the fungal community. Structural equation modeling indicated that nutrient supplementation enhances plant productivity by directly improving the soil nutrient environment and indirectly improving microbial community structure. Overall, the fertilization strategy of 60 % sheep manure combined with 40 % commercial organic fertilizer emerges as the most effective approach for vegetation restoration and soil rehabilitation in alpine mining regions.

施肥和草地重建对高寒矿区的恢复至关重要，但羊粪和商业有机肥对人工草地植物群落、土壤性质和微生物组成的综合影响尚不清楚。在青海省木里矿区2021年建立的人工草地上，对ck（不施肥）、S（100 %羊粪）、F（100 %有机肥）、M1（60 %羊粪+ 40 %有机肥）、M2（50 % + 50 %）和M3(40 % + 60 %)6种施肥处理进行了评价。2024年进行取样和高通量测序。4年后，施肥显著改变了植物群落结构、土壤化学性状、微生物组成和功能。M1处理的地上生物量、Shannon-Wiener指数、Pielou指数和Simpson指数均显著高于其他处理，分别比对照组高出223.03 %、4.23 %、12.20 %和15.67 %。此外，M1显著提高了全氮、全磷、速效氮、速效磷和有机质含量，分别比对照提高了90.70 %、169.61 %、504.43 %、251.24 %和391.00 %。虽然M1处理导致细菌群落的Sobs、Ace和Chao指数显著降低，但它显著增加了真菌群落的这些指数。结构方程模型表明，养分补充通过直接改善土壤养分环境和间接改善微生物群落结构来提高植物生产力。综上所述，60% %羊粪配40% %商业有机肥的施肥策略是高寒矿区植被恢复和土壤修复最有效的方法。

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引用次数: 0

Dynamic competitive removal mechanism for petroleum hydrocarbon under consideration of soil water during the thermal enhanced soil vapor extraction 热强化土壤蒸汽抽提过程中考虑土壤水分的石油烃动态竞争去除机制

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-14 DOI: 10.1016/j.jece.2026.121239

Liangliang Lu , Shui Wang , Zhibin Liu , Min Song , Dingwen Zhang , Lisen Bai

The remediation of low-permeability contaminated soils poses a significant challenge. Soil water serves as a crucial factor that restricts the mass transfer of contaminants. The thermal enhanced soil vapor extraction (T-SVE) is an effective technique for treating low-permeability contaminated soils. This paper investigated the removal and migration characteristics of diesel in low-permeability contaminated soils considering water competitive adsorption from a new insight of low-field nuclear magnetism resonance (LF NMR). In this study, a new method for simultaneous testing contaminant concentration and water content was proposed. The results shows that the removal efficiency of diesel is significantly lower than that of soil water during the dynamic extraction process. The diesel re-adsorption is a primary mechanism leading to the low remediation efficiency in low-permeability contaminated soils. Due to the competitive adsorption advantage of water molecules, the phenomenon of diesel re-adsorption was observed below 7 % water content. An optimal water content range of 7 %-16 % was proposed, which can provide optimized parameter for SVE remediation. After the T-SVE process with heating to 250℃, diesel can be removed with a removal rate of 99.8 %. The removal process of different carbon number groups in diesel conforms to an exponential decay kinetic model. Among them, the C10-C12 are mostly desorbed by SVE process. The C13-C20 and C21-C24 are removed during the T-SVE process at 150℃ and 250℃, respectively. In addition, the T1-T2 relaxation behaviors provide insights into the typical migration characteristic of diesel and soil water, including the dynamic migration of diesel, free water and bound water.

低渗透污染土壤的修复面临着重大挑战。土壤水分是制约污染物传质的关键因素。热强化土壤蒸汽萃取技术是处理低渗透污染土壤的有效技术。本文从低场核磁共振（LF NMR）的新视角出发，研究了柴油在低渗透污染土壤中竞争吸附的去除和迁移特性。本文提出了一种同时检测污染物浓度和含水量的新方法。结果表明，在动态提取过程中，柴油的去除效率明显低于土壤水的去除效率。柴油的再吸附是导致低渗透污染土壤修复效率低的主要机制。由于水分子的竞争吸附优势，在7 %含水率以下观察到柴油的再吸附现象。提出了7 % ~ 16 %的最佳含水率范围，为SVE修复提供了优化参数。经过加热至250℃的T-SVE工艺，柴油的去除率可达99.8 %。柴油中不同碳数基团的去除过程符合指数衰减动力学模型。其中，C10-C12主要通过SVE解吸。C13-C20和C21-C24分别在150℃和250℃的T-SVE过程中被去除。此外，T1-T2弛豫行为揭示了柴油和土壤水的典型迁移特征，包括柴油、自由水和束缚水的动态迁移。

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引用次数: 0

Application of stable isotopes in revealing mechanisms of pollutants biodegradation in wastewater treatment: A review 稳定同位素在揭示废水处理中污染物生物降解机制中的应用综述

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-14 DOI: 10.1016/j.jece.2026.121250

Bingqian Jiang , Xiaofeng Chen , Yonglan Tian , Shaoxia Yang , Yanbin Tong , Junfeng Niu

Based on the bibliometric analysis, this review investigates the application of stable isotope in biological wastewater treatment in the past 20 years. Stable isotopes are mainly used for studying the removal of nitrogen conventional and emerging organic pollutants, as well as the functional mechanism of biological communities. Firstly, stable isotopes technology provides a transparent perspective for in-depth understanding of the denitrification mechanism and its influencing factors. To date, the nitrogen removal mechanism under the comprehensive action of multiple factors, the carbon source competition and allocating mode are still not clear. Stable isotopes are used for reconstructing and quantifying the nitrogen cycle process involved by eukaryotic and metazoan. Secondly, stable isotopes play an important role in investigating the degradation pathways of emerging refractory pollutants represented by persistent organic compounds, antibiotics and endocrine disruptors. It arouses the urgent need for multi-isotope combination, single-cell and quantitative stable isotope detection techniques. Thirdly, stable isotope nucleic acid probe technology is operative in understanding of the structure, function and purification mechanism of biological communities, especially the mechanism of biological predation in pollutants removal. Combining stable isotope with other cutting-edge biotechnology shows large potential in researching the greenhouse gas emission reducing pathway, pollutant removal mechanism under multiple influencing factors, complex biological community interaction, microbial food web identification and construction in wastewater treatment plants. This review is expected to provide references for the innovation of wastewater treatment technologies such as the emerging pollutants biodegradation and transformation network as well as the in-situ residual sludge reduction enhanced by predation.

本文在文献计量学分析的基础上，综述了稳定同位素技术近20年来在污水生物处理中的应用。稳定同位素主要用于研究氮常规和新兴有机污染物的去除，以及生物群落的作用机制。首先，稳定同位素技术为深入了解反硝化机理及其影响因素提供了一个透明的视角。迄今为止，多因素综合作用下的脱氮机制、碳源竞争与分配模式尚不明确。稳定同位素被用于重建和量化真核生物和后生动物所涉及的氮循环过程。其次，稳定同位素在研究以持久性有机化合物、抗生素和内分泌干扰物为代表的新兴难降解污染物的降解途径方面发挥着重要作用。这引起了对多同位素组合、单细胞和定量稳定同位素检测技术的迫切需求。第三，稳定同位素核酸探针技术对了解生物群落的结构、功能和净化机制，特别是生物捕食去除污染物的机制具有重要作用。稳定同位素与其他前沿生物技术相结合，在研究温室气体减排途径、多影响因素下污染物去除机制、复杂生物群落相互作用、污水处理厂微生物食物网识别与构建等方面具有很大的潜力。本文综述有望为新兴的污染物生物降解和转化网络以及通过捕食增强原位残余污泥减量等污水处理技术的创新提供参考。

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引用次数: 0

Multifunctional solar evaporator: Directional freezing engineering for concurrent freshwater and electricity production with antibacterial property 多功能太阳能蒸发器：具有抗菌性能的淡水和电力同步生产的定向冷冻工程

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-14 DOI: 10.1016/j.jece.2026.121240

Zhen Li , Zhaoping Song , Jiebin Tang , Xi Gong , Huili Wang , Wenxia Liu

Limited evaporation rates, the threat of bacterial contamination, and the low utilization efficiency of electric potential generated during solar evaporation significantly hinder the development of evaporation processes—particularly in scenarios such as seawater treatment, industrial wastewater processing, and rural applications. In this work, a directionally frozen, architected solar-driven interfacial evaporator was prepared, which can achieve simultaneous high-efficiency evaporation, photocatalytic antibacterial function, and electric potential generation. Specifically, black titanium dioxide (B-TiO₂) with excellent antibacterial properties was firstly prepared using a high-temperature reduction method. TEMPO (2,2,6,6-tetramethylpiperidin-1-oxyl)-oxidized cellulose nanofiber nanoparticles (TOCNFs) incorporated with Polyacrylamide (PAAm) to prepare PAAm/TOCNFs (PT) hydrogel evaporator. Subsequently, B-TiO₂ was coated onto the surface of the PT hydrogel to improve its light-to-heat conversion capability, then finally obtained the B-TiO₂@PAAm/TOCNFs (PTBT) solar evaporator. The introduction of TOCNFs increased the evaporation rate to 3.94 kg·m⁻²·h⁻¹, and decreased the latent heat of water in the PTBT evaporator to 889.75 kJ·kg⁻¹. Benefiting from the photocatalytic antibacterial properties of B-TiO₂, the antibacterial efficiency of PTBT against E. coli and S. aureus reached 99.9 % and 99.8 %, respectively. Additionally, during the evaporation process, the PTBT evaporator exhibited salt tolerance and generated an open-circuit voltage as high as 184 mV. The combination of efficient solar evaporation with superior antibacterial properties is significant for improving solar energy utilization. This technology also holds significant potential for electricity generation via water evaporation.

有限的蒸发速率、细菌污染的威胁以及太阳能蒸发过程中产生的电势的低利用效率严重阻碍了蒸发过程的发展，特别是在海水处理、工业废水处理和农村应用等场景中。本工作制备了一种定向冷冻、构架式太阳能驱动界面蒸发器，该蒸发器可以同时实现高效蒸发、光催化抗菌和电势生成。其中，首次采用高温还原法制备了具有优异抗菌性能的黑色二氧化钛（B-TiO2）。TEMPO（2,2,6,6-四甲基胡椒碱-1-氧基）氧化纤维素纳米纤维纳米粒子（TOCNFs）与聚丙烯酰胺（PAAm）包合制备PAAm/TOCNFs （PT）水凝胶蒸化器。随后，将B-TiO2涂覆在PT水凝胶表面，提高其光热转换能力，最终得到B-TiO2@PAAm/TOCNFs （PTBT）太阳能蒸发器。TOCNFs的引入使蒸发速率提高到3.94 kg·m−2·h−1，使PTBT蒸发器中的水潜热降低到889.75 kJ·kg−1。利用B-TiO2的光催化抑菌特性，PTBT对大肠杆菌和金黄色葡萄球菌的抑菌效率分别达到99.9 %和99.8 %。此外，在蒸发过程中，PTBT蒸发器表现出耐盐性，并产生高达184 mV的开路电压。高效的太阳能蒸发与优越的抗菌性能相结合，对提高太阳能的利用率具有重要意义。这项技术还具有通过水蒸发发电的巨大潜力。

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引用次数: 0

Efficient methane production from kitchen waste leachate using pulsed-flow microbial electrolysis cell 利用脉冲流微生物电解池从厨余渗滤液中高效生产甲烷

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-14 DOI: 10.1016/j.jece.2026.121252

Shuyue Ma , Xin Li , Sihao Chen , Qingjuan Fan , Zhongying Chen , Haiping Luo , Guangli Liu , Huan Li

A novel pulsed-flow microbial electrolysis cell (MEC) was developed to enhance methane (CH₄) production from kitchen waste leachate. The pulsed-flow MEC was constructed with a spiral-wound carbon cloth anode, a stainless-steel mesh cathode, and a hydrophilic polyvinylidene fluoride membrane separator in a sandwich configuration. At an applied voltage of 1.0 V and 10 g COD/L leachate, the reactor was operated under alternating liquid-gas conditions at 30-min interval. The maximum current density and CH₄ production rate of the pulsed-flow MEC reached 229.3 ± 19.8 A/m³ and 1425.7 ± 143.9 L /m³·d, respectively, representing increases of 39 % and 1.5-fold over the control. Residual volatile fatty acids were less than 93.0 mg/L, and 97.7 % of COD was removed within 56 h. Planktonic cell counts in the solution increased linearly to 1.3 × 10⁷ CFU/mL without loss of anodic and cathodic biofilms viability (>99 %). Enterococcus with the relative abundance of 21.5 % dominated the anodic biofilm, whereas Methanobacterium (62.1 %) prevailed in the cathodic biofilm. High performance of the pulsed-flow MEC could be attributed to enhance biogas stripping and mass transfer in the anodic and cathodic biofilms. This study may provide a feasible way to enhance the performance of MEC in kitchen waste treatment.

开发了一种新型脉冲流微生物电解池（MEC），以提高厨余渗滤液中甲烷（CH₄）的产量。脉冲流MEC由螺旋缠绕碳布阳极、不锈钢网阴极和亲水聚偏氟乙烯膜分离器组成。在1.0 V和10 g COD/L渗滤液的施加电压下，反应器在液气交替条件下运行，间隔30 min。脉冲流MEC的最大电流密度和CH4产率分别达到229.3 ± 19.8 A/m³ 和1425.7 ± 143.9 L /m3·d，分别比对照提高了39 %和1.5倍。挥发性脂肪酸残留量小于93.0 mg/L，在56 h内COD去除率为97.7% %。溶液中的浮游细胞计数线性增加到1.3 × 10⁷CFU/mL，而阳极和阴极生物膜的活力没有损失（>99 %）。肠球菌以21.5 %的相对丰度在阳极生物膜中占优势，而甲烷杆菌以62.1 %的相对丰度在阴极生物膜中占优势。脉冲流MEC的高性能可归因于提高了生物气溶出和阳极和阴极生物膜的传质。本研究为提高MEC处理餐厨垃圾的性能提供了一条可行的途径。

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引用次数: 0

Efficient biodegradation and decolorization of azo dyes using peroxidase/chitosan-based enzyme-assisted coagulation 过氧化物酶/壳聚糖酶辅助混凝对偶氮染料的高效生物降解和脱色

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-14 DOI: 10.1016/j.jece.2026.121235

Na-won Baek , Shin-hee Lee

This study presents a novel enzyme-assisted coagulation (EAC) system as a low-carbon, energy-free strategy for the efficient treatment of azo dyes in textile wastewater. The EAC system integrates enzymatic oxidation with natural polymer-based coagulation and operates effectively under mild conditions without external energy input. Using horseradish peroxidase (HRP) and chitosan as model components, the system was applied to three representative azo dyes—Allura Red, Eriochrome Black, and Sunset Yellow—achieving decolorization efficiencies exceeding 98 %. Analytical techniques, including UV–Vis spectroscopy, FTIR, HPLC, and GC–MS, confirmed effective dye degradation and the stable aggregation of byproducts. The EAC mechanism involves the dual functionality of chitosan, which initially acts as an adsorbent and flocculant to enhance enzyme accessibility and subsequently serves as a stabilizing matrix that immobilizes and facilitates the removal of degradation products. This synergistic interaction between HRP and chitosan offers an efficient, biodegradable, and environmentally friendly approach for sustainable dye wastewater treatment.

本研究提出了一种新的酶辅助混凝（EAC）系统，作为一种低碳，无能源的策略，用于有效处理纺织废水中的偶氮染料。EAC系统将酶促氧化与天然聚合物混凝结合在一起，无需外部能量输入即可在温和条件下有效运行。以辣根过氧化物酶（HRP）和壳聚糖为模型组分，对三种具有代表性的偶氮染料——紫红、Eriochrome Black和Sunset yellow进行了脱色，脱色效率达到98% %以上。分析技术，包括紫外可见光谱、红外光谱、高效液相色谱和气相色谱-质谱，证实了染料的有效降解和副产物的稳定聚集。EAC机制涉及壳聚糖的双重功能，它最初作为吸附剂和絮凝剂，以提高酶的接近性，随后作为稳定基质，固定和促进降解产物的去除。HRP和壳聚糖之间的协同作用为染料废水的可持续处理提供了一种高效、可生物降解和环境友好的方法。

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引用次数: 0

Enhancement of MOF loading on fibrous membranes via construction of hierarchical porous structure for efficient uranium adsorption in aqueous solutions 通过构建分层多孔结构增强纤维膜上的MOF负载，以有效吸附水溶液中的铀

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-14 DOI: 10.1016/j.jece.2026.121261

Yiting Lin , Yuhan Zhang , Zhaoxuan Duan , Yufei Zou , Shanshan Li , Zhenbo Cao

Efficient separation of uranium from aqueous solutions is of critical importance for environmental safety, yet it remains a significant scientific challenge. Adsorption by MOF-based fibrous membranes has attracted extensive interest for uranium separation due to its high efficiency and ease of scalability. However, the adsorption performance of these composite membranes greatly depends on the MOF loading. In this study, cellulose acetate electrospun membranes with a hierarchical porous structure (P-CA) were innovatively employed as substrates, enabling the preparation of composite membranes (P-CA@ZIF-67) with enhanced ZIF-67 loading (68.7 wt%). The synergistic effect of the abundant porosities and oxygen-containing groups in CA substrate membranes plays an important role in achieving high ZIF-67 loading. As expected, the P-CA@ZIF-67 membrane exhibits a prominent adsorption capacity for uranyl ions (684.9 mg/g at pH 3.0) and rapid kinetics (equilibrium time: 40 min). Furthermore, the uranium capacity retains 91 % of its initial value after five cycles, and an excellent uranium adsorption capacity of 1.22 mg/g is achieved after a 24-hour immersion in simulated seawater. These results highlight the application potential of the prepared membranes in the field of uranium adsorption from aqueous solutions. Meanwhile, the proposed strategy may present a new approach for fabricating efficient MOF-based fibrous membranes.

从水溶液中高效分离铀对环境安全至关重要，但它仍然是一个重大的科学挑战。mof基纤维膜吸附铀因其高效、易于扩展而受到广泛关注。然而，这些复合膜的吸附性能很大程度上取决于MOF的负载。在本研究中，创新地采用具有分层多孔结构（P-CA）的醋酸纤维素电纺丝膜作为底物，制备了具有增强ZIF-67负载（68.7 wt%）的复合膜（P-CA@ZIF-67）。CA底物膜中丰富的孔隙和含氧基团的协同作用是实现ZIF-67高负载的重要因素。正如预期的那样，P-CA@ZIF-67膜对铀酰离子具有显著的吸附能力（pH为3.0时为684.9 mg/g）和快速的吸附动力学（平衡时间为40 min）。在模拟海水中浸泡24小时后，铀的吸附容量达到1.22 mg/g，且经过5次循环后，铀的吸附容量保持在初始值的91 %。这些结果突出了所制备膜在水溶液中铀吸附领域的应用潜力。同时，该方法为制备高效mof基纤维膜提供了新的途径。

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引用次数: 0

Solvent effects on recyclability of Amberlyst-15 in catalyzing high-concentration fructose to 5-hydroxymethylfurfural 溶剂对Amberlyst-15催化高浓度果糖制5-羟甲基糠醛可回收性的影响

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-14 DOI: 10.1016/j.jece.2026.121268

Yexin Hu, Qingju Yan, Jiangbo Ran, Liangzhang He, Weiyang Chen, Yimin Shan

Achieving large-scale production of biomass-derived 5-hydroxymethylfurfural (HMF) hinges on the high-concentration substrate and an effective recyclability of catalysts. Amberlyst-15 (A15) is a commercial sulfonated ion-exchange resin commonly used to catalyze the fructose-to-HMF dehydration. However, comparative studies on its recyclability during the conversion of high-concentration fructose in different solvents remain limited. Herein, we investigate the relationship between the recyclability of A15 and reaction solvents in dehydration of high-concentration fructose (20.0 wt.%) by recyclable experiments of A15 in H₂O, THF, 1,4-dioxane, DMSO, and DMSO-H₂O co-solvents with different water content at 140 ℃, wherein the worst recyclability is observed in THF and 1,4-dioxane. By comparing the structure of the A15 catalyst before and after the reaction and following solvothermal treatment, it was found that the primary factor hindering catalyst recyclability is the carbon deposit composed of humins on the surface of A15. Among these, the most severe humins formed through etherification-dehydration-condensation reactions and degradative condensation reactions of fructose and/or HMF are observed in THF and 1,4-dioxane. Furthermore, as the water content in the DMSO-H₂O co-solvent increases, the formation of humins I via etherification-dehydration-condensation path intensifies, whereas the formation of humins II via degradative condensation path would be diminishes. Overall, water content exerts negligible influence on total production of humins and the recyclability of the A15 catalyst. This work highlights the relationship between catalyst recyclability and solvent-controlled humin formation mechanisms, providing critical insights for developing sustainable solvent systems suitable for HMF bioreﬁneries.

实现生物质衍生5-羟甲基糠醛（HMF）的大规模生产取决于高浓度的底物和催化剂的有效可回收性。Amberlyst-15 （A15）是一种商业磺化离子交换树脂，通常用于催化果糖脱水制hmf。然而，对高浓度果糖在不同溶剂转化过程中其可回收性的比较研究仍然有限。本研究通过对A15在水、四氢呋喃、1,4-二恶烷、DMSO和DMSO-H2O等不同含水量的共溶剂中在140℃条件下的可回收性实验，考察了A15在高浓度果糖（20.0 wt.%）脱水过程中的可回收性与反应溶剂的关系，其中四氢呋喃和1,4-二恶烷的可回收性最差。通过比较反应前后和溶剂热处理后A15催化剂的结构，发现阻碍催化剂可回收性的主要因素是A15表面由人因组成的积碳。其中，通过醚化-脱水-缩合反应和果糖和/或HMF的降解缩合反应形成的最严重的人因是在THF和1,4-二恶烷中观察到的。此外，随着DMSO-H2O共溶剂中含水量的增加，通过醚化-脱水-缩合途径生成人蛋白I的能力增强，而通过降解缩合途径生成人蛋白II的能力减弱。总体而言，水含量对人类素总产量和A15催化剂可回收性的影响可以忽略不计。这项工作强调了催化剂可回收性和溶剂控制的人类形成机制之间的关系，为开发适用于HMF生物炼制的可持续溶剂系统提供了重要见解。

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引用次数: 0

Effects of polyethylene microplastics and 6PPD co-contamination on black soil 聚乙烯微塑料与6PPD共污染对黑土的影响

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-14 DOI: 10.1016/j.jece.2026.121245

Hengle Niu , Yang Yang , Yufeng Bai , Yong Yu

The widespread detection of microplastics (MPs) in various ecosystems has been widely reported. 6PPD (N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine) is a synthetic antioxidant, which can be adsorbed by MPs and lead to combined contaminants. The impact of both individual and co-contamination with PE-MPs and 6PPD on soil was evaluated in this study, focusing on its physicochemical properties and microbial communities. The results indicated that soil ammonium nitrogen (NH₄⁺-N) content was significantly increased by 26.88 % in the T7 group (500 mg/kg PE-MPs + 0.1 mg/kg 6PPD) compared to the CK. The structure of the soil microbial community was affected, and the Shannon index was significantly reduced by 11.38 % under high-concentration combined pollution. A concentration-dependent effect of PE-MPs and 6PPD on bacterial community connections was observed in microbial community networks, along with an increase in the complexity of microbial community networks caused by high-concentration combined contamination. Redundancy analysis and mantel test indicated that soil pH, available phosphorus (AP), NH₄⁺-N, and nitrate nitrogen (NO₃^--N) were the key environmental factors in influencing the soil microbial community. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis indicated that Metabolism was the predominant functional category, accounting for approximately 70.3 % of the functional annotations. This study reveals the implications of PE-MPs and 6PPD co-contamination for environmental risks and soil health.

微塑料（MPs）在各种生态系统中的广泛检测已被广泛报道。6PPD （N-（1,3-二甲基丁基）-N ' -苯基-对苯二胺）是一种合成抗氧化剂，可被MPs吸附并导致复合污染物。本研究评估了PE-MPs和6PPD单独污染和共同污染对土壤的影响，重点是其理化性质和微生物群落。结果表明：与对照相比，T7处理（500 mg/kg PE-MPs + 0.1 mg/kg 6PPD）显著提高了土壤铵态氮（NH4+-N）含量26.88 %；高浓度复合污染影响了土壤微生物群落结构，Shannon指数显著降低11.38 %。在微生物群落网络中观察到PE-MPs和6PPD对细菌群落连接的浓度依赖效应，以及高浓度复合污染引起的微生物群落网络复杂性的增加。冗余分析和mantel试验表明，土壤pH、速效磷（AP）、NH4+-N和硝态氮（NO3—N）是影响土壤微生物群落的关键环境因子。京都基因与基因组百科（KEGG）通路分析表明，代谢是主要的功能类别，约占70.3 %的功能注释。本研究揭示了PE-MPs和6PPD共污染对环境风险和土壤健康的影响。

{"title":"Effects of polyethylene microplastics and 6PPD co-contamination on black soil","authors":"Hengle Niu , Yang Yang , Yufeng Bai , Yong Yu","doi":"10.1016/j.jece.2026.121245","DOIUrl":"10.1016/j.jece.2026.121245","url":null,"abstract":"<div><div>The widespread detection of microplastics (MPs) in various ecosystems has been widely reported. 6PPD (N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine) is a synthetic antioxidant, which can be adsorbed by MPs and lead to combined contaminants. The impact of both individual and co-contamination with PE-MPs and 6PPD on soil was evaluated in this study, focusing on its physicochemical properties and microbial communities. The results indicated that soil ammonium nitrogen (NH<sub>4</sub><sup>+</sup>-N) content was significantly increased by 26.88 % in the T7 group (500 mg/kg PE-MPs + 0.1 mg/kg 6PPD) compared to the CK. The structure of the soil microbial community was affected, and the Shannon index was significantly reduced by 11.38 % under high-concentration combined pollution. A concentration-dependent effect of PE-MPs and 6PPD on bacterial community connections was observed in microbial community networks, along with an increase in the complexity of microbial community networks caused by high-concentration combined contamination. Redundancy analysis and mantel test indicated that soil pH, available phosphorus (AP), NH<sub>4</sub><sup>+</sup>-N, and nitrate nitrogen (NO<sub>3</sub><sup>-</sup>-N) were the key environmental factors in influencing the soil microbial community. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis indicated that Metabolism was the predominant functional category, accounting for approximately 70.3 % of the functional annotations. This study reveals the implications of PE-MPs and 6PPD co-contamination for environmental risks and soil health.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"14 2","pages":"Article 121245"},"PeriodicalIF":7.2,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tracing antibiotic fate in Chinese sea bass aquaculture: Implications for food safety and sustainability 追踪中国黑鲈养殖中的抗生素命运：对食品安全和可持续性的影响

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-14 DOI: 10.1016/j.jece.2026.121237

Haochang Su , Nanzhen Yi , Xiaoyang Zhang , Xiaojuan Hu , Wujie Xu , Yu Xu , Guoliang Wen , Yucheng Cao

Antibiotics are emerging contaminants. Systematic studies on the source tracing, dissemination and its key drivers of antibiotics in aquaculture, as well as their environmental fate, remain scarce. This study investigated the distribution, accumulation, and environmental fate of antibiotics within sea bass aquaculture systems in China's Sea Bass Capital, with a emphasis on the influence of antibiotic physicochemical properties on their behavior in water, sediment, and biota. Results showed that the molecular weight and octanol-water partition coefficient (Kow) of antibiotics significantly influenced their bioaccumulation in aquaculture organisms, underscoring the pivotal role of these properties in driving the distribution of antibiotics in aquatic environments. Furthermore, solubility and Kow of antibiotics were identified as critical factors affecting their partitioning between aqueous and sediment phases. Suspended solids were identified as a key driver for the spread and distribution of antibiotics within the system. Quinolone antibiotics, due to their prevalence and potential environmental impact, have been identified as key indicator antibiotics for priority management and control. Over half of the antibiotic remained in the sediment, with 30 % naturally degraded. This study elucidates the environmental trajectory of antibiotics, shedding light on their potential threats to aquatic ecosystems and food safety. It underscores the pivotal role of prudent waste management practices for antibiotics in aquaculture. Our findings can guide the formulation of specific mitigation strategies and enrich the ongoing dialogue on environmental sustainability and food safety.

抗生素是新兴的污染物。关于水产养殖中抗生素的来源追踪、传播及其主要驱动因素及其环境命运的系统研究仍然很少。本研究调查了中国黑鲈之都养殖系统中抗生素的分布、积累和环境命运，重点研究了抗生素理化性质对其在水、沉积物和生物群中的行为的影响。结果表明，抗生素的分子量和辛醇-水分配系数（辛醇-水分配系数，Kow）显著影响其在水产养殖生物体内的生物蓄积，这些特性在驱动抗生素在水生环境中的分布中起着关键作用。此外，抗生素的溶解度和溶解度是影响其在水相和沉积物相之间分配的关键因素。悬浮物被确定为系统内抗生素传播和分布的关键驱动因素。喹诺酮类抗生素由于其普遍存在和潜在的环境影响，已被确定为重点管理和控制的关键指标抗生素。超过一半的抗生素留在沉积物中，30% %自然降解。本研究阐明了抗生素的环境轨迹，揭示了抗生素对水生生态系统和食品安全的潜在威胁。它强调了水产养殖中谨慎的抗生素废物管理做法的关键作用。我们的研究结果可以指导制定具体的缓解战略，并丰富正在进行的关于环境可持续性和食品安全的对话。

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引用次数: 0