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

Upgrading oxygen vacancy and reducibility for enhancing synchronous abatement of Hg0 and toluene over Co-Mn-Ce trimetallic oxides fortified biochar catalysts Co-Mn-Ce三金属氧化物强化生物炭催化剂上提高氧空位和还原性以促进同步减排Hg0和甲苯

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.2026.121253

Jiaqing Li , Yanyan Feng , Lei Gao , Ping Fang , Yunqing Wang , Caiting Li , Jinke Xie , Yukai Quan , Siyou Li

In this paper, Co-Mn-Ce trimetallic oxides fortified biochar catalyst (XCo_aMn_bCe_c@BAC) was designed to upgrade oxygen vacancy and reducibility for enhancing toluene and Hg⁰ oxidation activities and lowering catalytic temperature. 10 %Co_0.3Mn_0.2Ce_0.5@BAC exhibited excellent E_toluene and E_Hg alongside with superior SO₂ and H₂O resistance at 160–400℃, acquiring E_Hg of 96.6 % and E_toluene of 95.9 % with CO₂ selectivity of above 85 % at 240℃ under a space velocity of about 16000 h⁻¹. Toluene exerted a dose-dependent inhibitory effect on Hg⁰ purification, while Hg⁰ imposed almost no effect on toluene purification. The interaction among Co, Mn and Ce together with the structure-activity relationship was synthetically delved. 10 %Co_0.3Mn_0.2Ce_0.5@BAC combined the merits of BAC and Co-Mn-Ce synergistic effect. Diverse characterizations behaved heteroatom interdoping could emerge robust synergistic effects, which induced lattice defects, created oxygen vacancies, enhanced reducibility and elevated the electronic transfer. Moreover, hierarchical porous biochar carrier with natural hydrophobic properties not only provided big surface area, high total pore volume and active interfaces, exposing plentiful active sites, but also held appropriate microporous - mesoporous - macroporous distribution, which facilitated the convenient diffusion and mass transfer. These profitable factors collectively contributed to the outstanding low-temperature catalytic activity towards toluene and Hg⁰ oxidation. The unsaturated Co, Mn, and Ce cations as Lewis acid sites functioned as effective active centers, facilitating the activation and oxidation of both pollutants. Meanwhile, oxygen vacancies served as dynamic channels for regenerating and transferring reactive oxygen species (ROSs).

本文设计了Co-Mn-Ce三金属氧化物强化生物炭催化剂（XCoaMnbCec@BAC），以提高氧空位和还原性，提高甲苯和Hg0的氧化活性，降低催化温度。10 %Co0.3Mn0.2Ce0.5@BAC在160 ~ 400℃表现出优异的EHg和EHg，同时具有优异的SO2和H2O抗性，在240℃条件下，空速约为16000 h−1，EHg为96.6% %，EHg为95.9% %，CO2选择性为85 %以上。甲苯对Hg0的纯化有剂量依赖性的抑制作用，而Hg0对甲苯的纯化几乎没有影响。对Co、Mn、Ce的相互作用及构效关系进行了综合研究。10 %Co0.3Mn0.2Ce0.5@BAC结合了BAC和Co-Mn-Ce协同效应的优点。不同表征的杂原子间掺杂可以产生强大的协同效应，诱导晶格缺陷，产生氧空位，增强还原性和提高电子转移。具有天然疏水性的层叠多孔生物炭载体不仅具有大的比表面积、高的总孔容和活性界面，暴露出丰富的活性位点，而且具有适当的微孔-介孔-大孔分布，便于扩散和传质。这些有利因素共同促成了对甲苯和Hg0氧化的出色低温催化活性。不饱和的Co、Mn和Ce阳离子作为Lewis酸的活性中心，促进了这两种污染物的活化和氧化。同时，氧空位是活性氧（ROSs）再生和转移的动态通道。

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引用次数: 0

Evaluation of the applicability of herbal medicine waste as a new bulking agent for sewage sludge bio-drying and the produced bio-coal 中草药废弃物作为污泥生物干燥新型填充剂的适用性评价及其制备的生物煤

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.2026.121184

Seungtaek Lee , Sun-Ju Lee , Young-Jin Lee , Woori Cho , Jai-Young Lee

Dehydrating and valorizing sewage sludge is essential for sustainable waste management, yet conventional thermal drying often requires substantial energy and lacks economic feasibility. This study is the first to apply herbal medicine waste as a bulking agent for bio-drying of sewage sludge, evaluating whether external heat input can be avoided while enhancing drying performance and improving the quality of recoverable bio-coal. Sewage sludge was blended with 0%, 10%, 20%, and 30% herbal medicine waste and treated for twenty days in lab-scale reactors while temperature, moisture content, calorific values, and microbial communities were monitored. As the mixing ratio increased, biologically generated heat intensified; notably, the thirty-percent condition achieved sufficient microbial heat generation despite a low initial C/N of 11.36, raising the peak temperature to approximately 45 °C. This condition yielded a final moisture content of 36.66% and a moisture reduction of 44.28%. Sequencing of 16S rRNA revealed a shift from anaerobic or facultative groups to aerobic and thermotolerant dominants, aligning with the rapid early-stage drying phase, with Acinetobacter and Pseudomonas prominently observed. The bio-dried solids from the thirty-percent mixture showed improved fuel properties, including higher fixed carbon, a higher heating value of 16.47 MJ/kg, a lower heating value of 14.91 MJ/kg, and a fuel ratio of 0.29, while chlorine and sulfur decreased by 96.1% and 97.6%, enhancing combustion suitability and environmental safety. Overall, bio-drying assisted by herbal medicine waste offers a low-energy, economically viable, and scalable pathway to produce cleaner, high-quality bio-coal from sewage sludge.

污水污泥脱水和增值是废物可持续管理的必要条件，但传统的热干燥往往需要大量的能源，缺乏经济可行性。本研究首次将中草药废弃物作为填充剂应用于污水污泥的生物干燥，评估在提高干燥性能和改善可回收生物煤质量的同时，是否可以避免外部热输入。将污水污泥与0%、10%、20%和30%的中草药废弃物混合，在实验室规模的反应器中处理20天，同时监测温度、水分含量、热值和微生物群落。随着混合比的增加，生物生热加剧；值得注意的是，在初始C/N为11.36的情况下，30%条件下仍能产生足够的微生物热，将峰值温度提高到约45°C。最终含水率为36.66%，减湿率为44.28%。16S rRNA测序显示，从厌氧或兼性群体向好氧和耐热群体转变，与早期快速干燥阶段一致，其中不动杆菌和假单胞菌明显。30%混合料的生物干燥固体燃料性能得到改善，固定碳含量增加，热值较高（16.47 MJ/kg），热值较低（14.91 MJ/kg），燃料比为0.29，氯和硫分别降低96.1%和97.6%，增强了燃烧适宜性和环境安全性。总的来说，草药废物辅助的生物干燥提供了一种低能耗、经济上可行、可扩展的途径，可以从污水污泥中生产更清洁、高质量的生物煤。

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引用次数: 0

A proof-of-concept study on green mining of seawater calcium via biochar interfaces for fluoride removal and carbon dioxide capture 通过生物炭界面对海水钙的绿色开采进行除氟和二氧化碳捕获的概念验证研究

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.2026.121228

TsingHai Wang , Zi-Ying Lu , Yun-Chen Sung , Chia-An Tsao , Jenn-Fang Su , Ching-Lung Chen , Chung-Yu Guan

Seawater represents an abundant but underutilized source of calcium; however, conventional Ca recovery relies on energy-intensive separation and purification processes that limit its sustainability. In this proof-of-concept study, we demonstrate that introducing additional biochar interfaces can promote the preferential deposition of seawater-derived Ca under solar-driven evaporation conditions, enabling its subsequent utilization for fluoride removal and carbon dioxide capture. Correlation analyses reveal that Ca deposition is primarily governed by accessible surface area and surface hydrophobicity, which enhance localized supersaturation and heterogeneous nucleation at the biochar–brine interface. In contrast, Mg deposition remains consistently suppressed due to its higher hydration energy. As a result, Ca/Mg molar selectivity spans from 2.52 to 56.66, and seawater-derived Ca loadings reach 0.27–3.44 mmol/g (1.1–13.7 wt%). The resulting Ca-loaded biochars exhibit effective fluoride removal through

{CaF}_{2}

precipitation at surface-accessible Ca domains, while

{CO}_{2}

capture proceeds through carbonation of a limited fraction of reactive Ca-bearing species. Importantly, Ca utilization in both cases is controlled by interfacial accessibility rather than total Ca inventory. This study further proposes a boundary-condition framework in which Ca/Mg-loaded biochars are directly valorized as green supplemental fuels and mineral feedstocks. Under an optimistic dual-substitution scenario, Ca/Mg-loaded biochar enables an estimated ∼14 % reduction in

{CO}_{2}

emissions for the cement production. Overall, selective mining of seawater calcium provides a feasible pathway to repurpose traditional solar salterns into suppliers of green raw materials, supporting resource circularity and advancing the United Nations Sustainable Development Goal 11: Sustainable Cities and Communities.

海水是丰富但未充分利用的钙来源；然而，传统的钙回收依赖于能源密集型的分离和净化过程，这限制了其可持续性。在这项概念验证研究中，我们证明了在太阳能驱动的蒸发条件下，引入额外的生物炭界面可以促进来自海水的Ca的优先沉积，从而使其能够随后用于除氟和二氧化碳捕获。相关分析表明，Ca的沉积主要受可达表面积和表面疏水性的控制，从而增强了生物炭-盐水界面的局部过饱和和非均质成核。相反，Mg的沉积由于其较高的水化能而一直受到抑制。结果表明，Ca/Mg的摩尔选择性范围为2.52 ~ 56.66，海水来源的Ca负荷达到0.27 ~ 3.44 mmol/g（1.1 ~ 13.7 wt%）。所得到的载钙生物炭通过在表面可达的Ca域上沉淀CaF2来有效地去除氟，而二氧化碳的捕获则通过有限比例的活性含钙物质的碳化来进行。重要的是，在这两种情况下，钙的利用率都是由界面可访问性控制的，而不是由总钙库存控制的。本研究进一步提出了一个边界条件框架，其中Ca/ mg负载的生物炭直接作为绿色补充燃料和矿物原料进行增值。在乐观的双替代方案下，Ca/ mg负载生物炭可使水泥生产中的二氧化碳排放量减少约14%。总的来说，选择性开采海水钙提供了一条可行的途径，将传统的太阳能盐场改造为绿色原材料的供应商，支持资源循环，推进联合国可持续发展目标11：可持续城市和社区。

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引用次数: 0

Methylene blue removal from synthetic wastewater using a vertical flow-constructed wetland with organic waste-based substrate integrated with UV/HOCl treatment: Experimental evaluation and Life cycle assessment 垂直流人工湿地与有机废物基基质结合UV/HOCl处理对合成废水亚甲基蓝的去除：实验评估和生命周期评估

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121212

Debasish Nayak , Siddharth Tiwari , Arindom Dutta , Elakkiya R , Monali Priyadarshini

The objective of the present investigation is to evaluate the efficacy of a vertical flow constructed wetland system (VF-CW) employing discarded fruit and vegetable peels as a substrate coupled with UV/HOCl to treat synthetically produced textile wastewater that contains Methylene blue (MB) dye. Three VF-CW systems were fabricated, of which two were planted with Canna indica (VF-CWC), Typha angustifolia (VF-CWT), and one with no plant as a control (VF-CWN). Among these three, VF-CWC demonstrated ∼100 % of MB and 97.24 ± 1.50 % of COD removal after 24 h at pH 7.8, which was 1.1 and 1.2 times higher in MB (90.50 ± 1.30 %) and COD removal (80.35 ± 1.60 %) than VF-CWT. In contrast, VF-CWN (control) showed comparable removal of 85.10 ± 1.50 % of MB and 73.93 ± 1.40 % of COD operating under similar conditions. However, the effluent of the sole VW-CWC contained 28,900 colony-forming units (CFU)/mL of E. coli at a 10² dilution; further treating the effluent with the UV/HOCl system effectively eliminates all E. coli. The assessment of growth parameters of Canna indica and Typha angustifolia in VF-CWC and VF-CWT demonstrated a higher growth rate and adaptability of Canna indica in the substrate and wastewater. The degradation of MB in VF-CWC + UV/HOCl involves ring opening, oxidation, and ring contraction, ultimately converting it into CO₂ and H₂O. The cost to treat per m³ of MB-containing wastewater by the integrated system was observed to be 0.331 $/m³ (Rs. 29.65 per m³). The OpenLCA results revealed that the combined VF-CWC + UV/HOCl had the least impact on resource depletion, ecology, and human health. In conclusion, this study addressed several environmental issues, including pathogen contamination and dye pollution, as well as the recycling of leftover fruit and vegetable peels for the development of economical and environmentally friendly wastewater treatment systems.

本研究的目的是评价垂直流人工湿地系统（VF-CW）以废弃果蔬皮为底物，结合UV/HOCl处理含亚甲基蓝（MB）染料的合成纺织废水的效果。构建了3个VF-CW系统，其中2个种植美人蕉（VF-CWC）， 1个种植小叶风柏（VF-CWT）， 1个不种植植物作为对照（VF-CWN）。这三个中,VF-CWC证明∼100 % 97.24 MB, ±1.50  %的COD去除率在24 h在pH值为7.8,1.1和1.2倍的MB(90.50 ±1.30  %)和COD去除率(80.35 ±1.60  %)比VF-CWT。相比之下，VF-CWN（对照组）在相同条件下的MB去除率为85.10 ± 1.50 %，COD去除率为73.93 ± 1.40 %。然而，唯一的VW-CWC在102稀释下的流出物中含有28,900菌落形成单位(CFU)/mL的大肠杆菌；用UV/HOCl系统进一步处理出水，有效地去除所有大肠杆菌。在VF-CWC和VF-CWT中对美人蕉和小叶菇生长参数的评估表明，美人蕉在基质和废水中的生长速率和适应性更高。MB在VF-CWC + UV/HOCl中的降解过程包括开环、氧化和缩环，最终转化为CO2和H2O。综合系统处理每立方米含mb废水的成本为0.331美元/立方米（29.65卢比/立方米）。OpenLCA结果表明，VF-CWC + UV/HOCl组合对资源消耗、生态和人类健康的影响最小。总之，本研究解决了几个环境问题，包括病原体污染和染料污染，以及剩果皮和蔬菜皮的回收利用，以开发经济环保的废水处理系统。

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引用次数: 0

Application of Bi2MoO6 materials in ammonia synthesis through photocatalytic nitrogen fixation Bi2MoO6材料在光催化固氮合成氨中的应用

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121172

Ping Zhang, Xinyu Du, Keyi Chai, Jiaqi Guo, Lu Zhang, Xiaoping Su, Lianbiao Zhao

Photocatalytic semiconductor technology has attracted significant research attention due to its outstanding capability in addressing energy and environmental challenges. The traditional ammonia synthesis industry is characterized by high energy consumption, necessitating the exploration of new, environmentally sustainable methods for ammonia production. Photocatalytic nitrogen reduction reaction (pNRR) can produce NH₃ under ambient conditions. This process is driven by solar energy and is noted for its zero-emission characteristics. As a representative member of the Aurivillius family, Bi₂MoO₆ (BMO) has attracted considerable research interest due to its economic feasibility and promising photocatalytic properties, including environmental friendliness, tunable band gap (2.5–2.8 eV), and significant visible light absorption capacity. Nevertheless, the photocatalytic performance of BMO still has considerable room for improvement. Currently, various modification strategies are employed to enhance the photocatalytic activity of BMO. This review also covers the nitrogen fixation mechanisms, structural characteristics and synthesis of BMO, as well as ammonia detection methods and sources. Finally, the report highlights the current challenges in the field and future research directions.

光催化半导体技术因其在解决能源和环境挑战方面的突出能力而引起了广泛的研究关注。传统合成氨工业的特点是高能耗，需要探索新的、环境可持续的合成氨生产方法。光催化氮还原反应（pNRR）可以在环境条件下生成NH3。该过程由太阳能驱动，并以其零排放特性而闻名。Bi2MoO6 （BMO）作为Aurivillius家族的代表成员，由于其经济可行性和良好的光催化性能，包括环境友好性、可调带隙（2.5-2.8 eV）和显著的可见光吸收能力，引起了广泛的研究兴趣。尽管如此，BMO的光催化性能仍有很大的提升空间。目前，人们采用各种改性策略来提高BMO的光催化活性。综述了BMO的固氮机理、结构特点和合成方法，以及氨的检测方法和来源。最后，报告强调了该领域当前面临的挑战和未来的研究方向。

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引用次数: 0

Surfactant-enhanced ultrasonic agglomeration of carbon black aerosols with experimental optimization 表面活性剂增强炭黑气溶胶超声团聚的实验优化

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121218

Sirui Tong , Guangxue Zhang , Ziyue Chen , Yuqi Mao , Yunchao Li , Dingkun Yuan , Jiangrong Xu , Siew Hwa Chan

Carbon black aerosols are highly hydrophobic and remain suspended as fine particles during mixing and conveying, posing respiratory and dust explosion hazards. Acoustic agglomeration (AA) offers a pre-collection route to enlarge carbon black particles to facilitate downstream capture. This study used an integrated experimental setup to evaluate AA performance under various conditions and optimize acoustic parameters. The optimal sound pressure level was 139 dB for both the sound only and water-mist-assisted (AA+water) cases, with the corresponding most effective frequencies of 18 and 16 kHz, respectively. Dispersed water droplets in the carrier gas promoted liquid-bridge formation, yielding stable transmittance above 80 % and agglomerates with diameters near 10 μm. Tests with three surfactants were performed to assess how interfacial properties affect agglomeration and indicated that electrostatic screening can eliminate Coulombic repulsion between particles, achieving stable transmittance up to 95 %. Initial concentration tests revealed a balance between the water-mist flow rate and the carbon black feed rate. Excessive mist may cause aerosol redispersion, whereas high carbon black mass concentration enhances collisions but drives performance toward saturation via acoustic shielding. These findings provide guidance for optimizing the AA for carbon black aerosols with surfactants and lay the foundation for downstream capture design and material reuse systems.

炭黑气溶胶是高度疏水性的，在混合和输送过程中仍作为细颗粒悬浮，造成呼吸和粉尘爆炸危险。声团聚（AA）提供了一个预先收集的途径，扩大了炭黑颗粒，便于下游捕获。本研究采用综合实验装置对不同条件下的AA性能进行了评价，并对声学参数进行了优化。单声和水雾辅助（AA+水）的最佳声压级为139 dB，对应的最有效频率分别为18和16 kHz。载气中分散的水滴促进了液桥的形成，透过率稳定在80% %以上，团聚体直径接近10 μm。用三种表面活性剂进行了界面性能影响团聚的测试，结果表明静电筛选可以消除颗粒之间的库仑排斥，获得高达95% %的稳定透过率。初始浓度试验显示水雾流速和炭黑进料速率之间的平衡。过多的雾可能导致气溶胶再分散，而高炭黑质量浓度会增强碰撞，但会通过声屏蔽使性能趋于饱和。这些发现为炭黑气溶胶表面活性剂的AA优化提供了指导，并为下游捕集设计和材料再利用系统奠定了基础。

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引用次数: 0

Tissue-specific bioaccumulation risk of fluorinated liquid crystal monomers with high nAtom and complex structure in zebrafish: An in-silico simulation and experimental verification 具有高nAtom和复杂结构的氟化液晶单体在斑马鱼中的组织特异性生物积累风险：硅模拟和实验验证

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121161

Luanxiao Wei , Wei He , Haiyang Ren , Xixi Li , Yu Li

Fluorinated liquid crystal monomers (FLCMs), key raw materials in liquid crystal displays (LCDs), are emerging pollutants with the high bioaccumulation potential. However, research on their bioaccumulation remains limited. Therefore, the bioaccumulation of 174 FLCMs in zebrafish brain, gill, intestine, liver, and muscle were obtained using molecular docking and molecular dynamics simulations in this study. Results showed that gill (-121.121 kJ/mol) and liver (-118.234 kJ/mol) had high bioaccumulation levels, and brain (-84.640 kJ/mol), intestine (-85.900 kJ/mol) and muscle (-86.311 kJ/mol) tissues had low bioaccumulation levels. Secondly, a machine learning method was used to construct a multiple linear regression model between FLCMs enrichment and molecular structure parameters. The results showed that FLCMs with a greater number of aromatic rings and atoms tend to exhibit stronger enrichment potential, leading to higher binding affinity in zebrafish tissues. In addition, POPs that share structural features with FLCMs display tissue-specific accumulation patterns similar to those observed for FLCMs, with both groups preferentially accumulating in the gill and liver of zebrafish. When the number of aromatic rings and atoms of FLCMs increased, their bioaccumulation effect in zebrafish tissues was stronger. Transcriptomics sequencing experiments were also conducted to verify that the FLCMs (i.e., 3bcHdFB and 2O3cHdFP) with high bioaccumulation ability in theoretical calculations would cause more severe impact on zebrafish tissues. This is the first time to systematically predict and verify the bioaccumulation of FLCMs, providing ideas for risk management and control of FLCMs, and theoretical support for the molecular design of green FLCMs.

氟化液晶单体（flcm）是液晶显示器（lcd）的关键原料，是一种具有较高生物蓄积潜力的新兴污染物。然而，对其生物积累的研究仍然有限。因此，本研究通过分子对接和分子动力学模拟，获得了174种flcm在斑马鱼脑、鳃、肠、肝和肌肉中的生物蓄积。结果表明，鳃（-121.121 kJ/mol）和肝脏（-118.234 kJ/mol）的生物积累水平较高，脑（-84.640 kJ/mol）、肠（-85.900 kJ/mol）和肌肉（-86.311 kJ/mol）的生物积累水平较低。其次，利用机器学习方法构建flcm富集程度与分子结构参数之间的多元线性回归模型；结果表明，具有更多芳环和芳原子的flcm往往表现出更强的富集潜力，从而在斑马鱼组织中具有更高的结合亲和力。此外，与flcm具有相同结构特征的持久性有机污染物表现出与flcm相似的组织特异性积累模式，两组均优先在斑马鱼的鳃和肝脏中积累。当flcm的芳香环和原子数增加时，其在斑马鱼组织中的生物蓄积作用越强。转录组学测序实验也验证了理论计算中具有较高生物积累能力的flcm（即3bcHdFB和2O3cHdFP）对斑马鱼组织的影响更为严重。这是第一次系统地预测和验证flcm的生物积累，为flcm的风险管理和控制提供思路，并为绿色flcm的分子设计提供理论支持。

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引用次数: 0

Non-negligible risk of nitrogenous disinfection byproducts arising from the chlorination of ammonia-containing source water 含氨水源经氯化处理产生的含氮消毒副产物的不可忽略的风险

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121231

Guangrong Sun , Dongquan Li , Feiyang Huang , Han Yeong Kaw , Hainan Wu , Haibing Cong

The role of ammonia in the formation of nitrogenous disinfection by-products (N-DBPs) during chlorination remains debated. In this study, we systematically investigated the contribution of ammonia in generating four N-DBPs and two carbonaceous DBPs (C-DBPs) during the chlorination of bisphenol A (BPA), while also identified novel N-DBPs using high-resolution mass spectrometry (HRMS). Results revealed that ammonia significantly altered the composition of low-molecular-weight aliphatic DBPs. Specifically, haloacetonitriles (HANs) exhibited an initial increase followed by a subsequent decline, whereas haloacetamides (HAcAms), halonitromethanes (HNMs) and N-nitrosamines (NAs) showed a positive correlation with ammonia concentration. Compared with ammonia-free condition, HRMS analysis revealed 17 novel C-DBPs and 26 novel N-DBPs, which included an increased generation of aromatic N-DBPs. The integrated toxicity assessment of low-molecular-weight DBPs further indicated that overall cytotoxicity and genotoxicity in drinking water initially increased then decreased with rising ammonia concentration, peaking at 1 mg/L, while the carcinogenic risk of NAs continuously increased with ammonia concentrations. These findings highlighted the importance of controlling ammonia at reduced levels to safeguard drinking water safety.

在氯化过程中氨在氮消毒副产物（N-DBPs）形成中的作用仍然存在争议。在这项研究中，我们系统地研究了氨在双酚A （BPA）氯化过程中生成四种N-DBPs和两种碳质DBPs （C-DBPs）的贡献，并利用高分辨率质谱（HRMS）鉴定了新的N-DBPs。结果表明，氨显著改变了低分子量脂肪族dbp的组成。具体而言，卤代乙腈（HANs）表现出先上升后下降的趋势，而卤代乙酰胺（HAcAms）、卤代硝基甲烷（HNMs）和n -亚硝胺（NAs）与氨浓度呈正相关。与无氨条件相比，HRMS分析发现了17个新的C-DBPs和26个新的N-DBPs，其中芳香N-DBPs的生成增加。低分子量DBPs的综合毒性评估进一步表明，随着氨浓度的升高，饮用水中的总体细胞毒性和遗传毒性先升高后降低，在1 mg/L时达到峰值，而NAs的致癌风险随着氨浓度的升高而不断增加。这些发现强调了将氨控制在较低水平以保障饮用水安全的重要性。

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引用次数: 0

Synergistic effect of Bi₂MoO₆ and expanded MoS₂ heterostructures for highly efficient visible-light-driven environmental remediation Bi₂MoO₆与膨胀MoS₂异质结构的协同效应在高效可见光环境修复中的应用

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2025.120830

Magdeline Tze Leng Lai , Bao Lee Phoon , Kian Mun Lee , Chin Wei Lai , Mohd Rafie Johan , Supakorn Boonyuen , Joon Ching Juan

A series of Bi₂MoO₆/interlayer-expanded MoS₂ (BM-IEM) heterostructures was synthesized via a two-step hydrothermal method and evaluated for visible-light-driven methylene blue (MB) photodegradation. The 3 wt% BM–IEM composite achieved the highest photocatalytic efficiency, removing 98.2 % of MB in 60 min and sustaining its photocatalytic performance through five continuous cycles. This superior enhanced activity results from the strong interfacial coupling of Bi₂MoO₆ with the expanded MoS₂ structure, thereby enlarging the interlayer spacing, increasing the surface area, and creating strong electronic coupling at the Bi–O–S–Mo interface. These features enhance light absorption, facilitate charge separation, and promote the generation of reactive oxygen species (ROS). Oxygen-vacancy (O_V) formation within the composite introduces mid-gap states that extend light responsiveness and support efficient electron transfer to adsorbed O₂, forming superoxide (•O₂⁻) and hydroxyl (•OH) radicals. The photocatalytic mechanism was analyzed through radical trapping and LC-MS experiments, revealing degradation pathways involving ring-opening oxidation, hydroxylation, and N-demethylation. The results demonstrate that tailoring interlayer spacing and defect states in MoS₂-based heterojunctions provides an effective design strategy for high-performance, visible-light-responsive photocatalysts for wastewater purification.

采用两步水热法合成了一系列Bi₂MoO₆/层间膨胀MoS₂（BM-IEM）异质结构，并对其可见光降解亚甲基蓝（MB）的性能进行了评价。3 wt%的BM-IEM复合材料具有最高的光催化效率，在60 min内去除98.2% %的MB，并在连续5个循环中保持其光催化性能。这种优异的增强活性是由于Bi₂MoO₆与膨胀后的MoS₂结构发生了强的界面耦合，从而扩大了层间距，增加了表面积，并在Bi - o - s - mo界面产生了强的电子耦合。这些特性增强了光吸收，促进了电荷分离，促进了活性氧（ROS）的产生。复合材料中的氧空位（OV）形成引入了中间间隙态，延长了光响应性，并支持有效的电子转移到吸附的O₂上，形成超氧（•O₂⁻）和羟基（•OH）自由基。通过自由基捕获和LC-MS实验分析了光催化机理，揭示了开环氧化、羟基化和n -去甲基化的降解途径。结果表明，调整MoS 2基异质结的层间间距和缺陷状态为设计高性能、可见光响应的废水净化光催化剂提供了有效的策略。

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引用次数: 0

Rational design of nanoscale iron sulfide for dual inactivation of antibiotic resistance: Mechanistic insights and performance validation 纳米级硫化铁双重失活抗生素耐药性的合理设计：机理见解和性能验证

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-13 DOI: 10.1016/j.jece.2026.121230

Yaqi Liu , Jie Yu , Ping Jiang , Shunli Li , Qiurong Zhang

Hospital wastewater is a critical hotspot for the dissemination of antimicrobial resistance (AMR), where conventional disinfection often fails to eliminate antibiotic-resistant bacteria (ARB) and genes (ARGs) and may even promote extracellular ARG release. In this study, a series of iron sulfide nanomaterials with distinct crystal structures and interfacial properties (Py_C, Py_O, Mar, Ma_A, Ma_B) were rationally synthesized to investigate the relationship between structural characteristics and antimicrobial performance. Experimental results demonstrated that the Py_O material, characterized by favorable interfacial properties, exhibited the most rapid and potent inactivation of multiple ARB, while simultaneously disrupting intracellular ARGs (e.g., tetB) and adsorbing and degrading eARGs (e.g., ampR). Mechanistic investigations using atomic force microscopy and two-dimensional infrared spectroscopy confirmed that Py_O induced extensive plasmid structural damage. Molecular simulations further revealed that Py_O displayed the strongest binding energy and most stable interactions with DNA. In real hospital wastewater tests, Py_O membranes achieved sustained high removal efficiencies, exceeding 97 % for intracellular ARGs and 90 % for eARGs, while maintaining operational stability. Complementary machine learning analyses corroborated that interfacial parameters such as surface charge and hydrophobicity are key determinants of antimicrobial performance, in agreement with experimental findings. Overall, this work demonstrates that rational optimization of interfacial properties can yield high-performance technologies for AMR mitigation, providing an effective solution for controlling resistance pollution in complex aquatic environments.

医院废水是抗菌素耐药性（AMR）传播的关键热点，常规消毒往往不能消除耐药细菌（ARB）和基因（ARGs），甚至可能促进细胞外ARG的释放。本研究合理合成了一系列晶体结构和界面性能不同的硫化铁纳米材料（Py_C、Py_O、Mar、Ma_A、Ma_B），研究其结构特征与抗菌性能之间的关系。实验结果表明，Py_O材料具有良好的界面特性，对多种ARB表现出最快速和有效的失活，同时破坏细胞内ARGs（如tetB）和吸附和降解eARGs（如ampR）。利用原子力显微镜和二维红外光谱进行的机理研究证实，Py_O引起了广泛的质粒结构损伤。分子模拟进一步表明，Py_O与DNA的结合能最强，相互作用最稳定。在实际的医院废水测试中，Py_O膜实现了持续的高去除效率，在保持运行稳定性的同时，对细胞内ARGs的去除效率超过97% %，对eARGs的去除效率超过90% %。互补的机器学习分析证实，界面参数（如表面电荷和疏水性）是抗菌性能的关键决定因素，与实验结果一致。总的来说，这项工作表明，合理优化界面性质可以产生高性能的AMR缓解技术，为控制复杂水生环境中的抗性污染提供了有效的解决方案。

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引用次数: 0