Journal of water process engineering最新文献_第3页

Enhanced sulfate radical generation through sono-activated Ag-Imd/g-C3N4 catalyst for antibiotic degradation 超声活化Ag-Imd/g-C3N4催化剂促进抗生素降解硫酸根生成

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jwpe.2026.109578

Mohamed Abu Shuheil , Ahmed Aldulaimi , Subhashree Ray , Talal Aziz Qassem , Gunjan Garg , Renu Sharma , Bekzod Madaminov , Sabokhat Sadikova

A sono-assisted persulfate activation system was developed using a silver-imidazole/graphitic carbon nitride (Ag-Imd/g-C₃N₄) composite for efficient degradation of tylosin (TYL) antibiotic in aqueous solution. The Ag-Imd complex was synthesized through a coordination reaction between silver nitrate and 2-methylimidazole, followed by integration with g-C₃N₄ to form heterostructured composites. Characterization analyses confirmed the successful coupling between Ag-Imd and g-C₃N₄, resulting in increased surface area, enhanced interfacial charge transfer, and a narrowed band gap (1.95 eV) favorable for sono-excitation. The sono-assisted Ag-Imd/g-C₃N₄(0.03)/peroxydisulfate process achieved superior TYL removal compared to single or binary processes due to the synergistic effects of ultrasonic cavitation, catalytic activation, and sulfate radical generation. The influence of operational parameters including pH, catalyst loading, peroxydisulfate dosage, and initial TYL concentration was systematically examined. Optimum degradation (≈ 93.4%) was obtained at pH 8.5, catalyst dosage of 0.6 g L⁻¹, initial TYL concentration of 15 mg L⁻¹, and PDS concentration of 6 mmol L⁻¹. Mechanistic investigations supported that both g-C₃N₄ and Ag-Imd act as n-type semiconductors forming an S-scheme heterojunction, facilitating charge separation and effective formation of SO₄•⁻ and •OH radicals under ultrasonic irradiation. This study highlights the potential of coordination-modified carbon nitride composites for energy-efficient degradation of antibiotic contaminants in water.

采用银-咪唑/石墨氮化碳（Ag-Imd/g-C3N4）复合材料，建立了一种超声辅助过硫酸盐活化体系，用于高效降解水溶液中的tylosin （TYL）抗生素。通过硝酸银与2-甲基咪唑配位反应合成Ag-Imd配合物，然后与g-C3N4结合形成异质结构复合物。表征分析证实了Ag-Imd与g-C3N4之间的成功耦合，从而增加了表面面积，增强了界面电荷转移，并缩小了有利于声激发的带隙（1.95 eV）。超声波辅助Ag-Imd/g-C3N4(0.03)/过硫酸氢盐工艺由于超声空化、催化活化和硫酸盐自由基生成的协同作用，与单一或二元工艺相比，具有更好的TYL去除效果。系统考察了pH、催化剂负载、过硫酸氢盐用量、TYL初始浓度等操作参数对反应的影响。在pH为8.5、催化剂用量为0.6 g L−1、TYL初始浓度为15 mg L−1、PDS初始浓度为6 mmol L−1的条件下，降解效果最佳（≈93.4%）。机理研究支持g-C3N4和Ag-Imd作为n型半导体形成s型异质结，在超声照射下促进电荷分离和SO4•−和•OH自由基的有效形成。本研究强调了配位改性氮化碳复合材料在高效降解水中抗生素污染物方面的潜力。

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引用次数: 0

Triple-mode murexide-functionalized UiO-66(Zr) MOF sensor for selective and sensitive Zn(II) detection in tap water and wastewater 三模金属氧化物功能化UiO-66(Zr) MOF传感器，用于自来水和废水中Zn（II）的选择性和敏感检测

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jwpe.2026.109596

Roaa T. Mogharbel

A murexide-functionalized UiO-66(Zr) MOF was synthesized through post-synthetic immobilization to facilitate the detection of Zn²⁺ ions in aqueous environments using a triple-mode approach. This sensor exhibits a noticeable color change observable to the naked eye from pink to colorless, a UV–Vis response at a wavelength of 517 nm, and a fluorescence “turn-on” emission at 424 nm λ__ex = 360 nm. Under optimized conditions (pH 7, 0.5 mg sensor per 10 mL solution, and a response duration of 30 s), the limits of detection were established at 0.034 ppm for UV–Vis measurements and 0.007 ppm for fluorescence. The material displayed a significant selectivity for Zn²⁺ over 14 competing ions, maintaining over 85% of its signal after six regeneration cycles and retaining approximately 90% of its response after six months of storage. The sensor's practical applicability was demonstrated in the analysis of tap water and wastewater, yielding recoveries ranging from 98.5% to 101.1%, which correlated well with results obtained from ICP-OES.

采用合成后固定化的方法合成了一种具有多氧化物功能化的UiO-66(Zr) MOF，用于水中环境中Zn2+离子的三模检测。该传感器具有肉眼可见的从粉红色到无色的明显颜色变化，在517 nm波长处具有紫外-可见响应，在424 nm波长处具有荧光“开启”发射λ_ex = 360 nm。在优化条件下（pH为7，每10 mL溶液0.5 mg传感器，响应时间为30 s），紫外可见检测限为0.034 ppm，荧光检测限为0.007 ppm。该材料对Zn2+表现出明显的选择性，在6次再生循环后保持了85%以上的信号，在6个月的储存后保持了约90%的响应。该传感器在自来水和废水分析中的实际适用性得到了验证，回收率为98.5% ~ 101.1%，与ICP-OES结果吻合良好。

引用次数: 0

Coupling microbial As(III) oxidation with Fe-sludge adsorption: A continuous dual-column approach for arsenic removal 耦合微生物As（III）氧化与铁污泥吸附：连续双柱法去除砷

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jwpe.2026.109566

Naoko Okibe , Yuika Kawazoe , Fumiya Kurogi , Yuya Sato , Taiki Katayama , Tetsuo Yasutaka

Legacy acid mine drainage treatment generates Fe-rich sludge, a low-value waste despite its strong affinity for arsenic (As). Batch tests showed that As(III) oxidation by Thiomonas delicata Hö5 markedly enhanced subsequent As(V) sequestration by Fe-sludge. A continuous system for 100 mg/L As(III) at pH 3.5 was developed using immobilized cells on a porous silica carrier, achieving ∼90% As(III) oxidation at HRTs ≥4 h, whereas the un-inoculated control exhibited slower, unstable oxidation by an indigenous consortium. Connecting this oxidation column to a lower Fe-sludge bed created the separate-column configuration, which maintained >98% total As removal for 75 days at an HRT of 4 h and produced predominantly As(V) on solids. The un-inoculated system also achieved >98% removal when influent As(III) was lowered to 20 mg/L, indicating adaptability of indigenous oxidizers. A simplified mixed-column configuration also achieved >98% removal at HRTs of 20–4 h, though As was first sorbed as As(III) and oxidized later, resulting in weaker complexes and more leachable solids due to limited Fe-phase reorganization. Still, acid–thermal post-treatment reduced As leachability to <5.0 mg/L, highlighting that the mixed-column configuration remains practical, whereas the separate-column configuration provides the most reliable route to inherently stable As-bearing solids.

传统的酸性矿山废水处理产生富铁污泥，这是一种低价值的废物，尽管它对砷（As）有很强的亲和力。批量试验表明，硫单胞菌Hö5对As（III）的氧化作用显著增强了后续铁污泥对As(V)的吸附。利用多孔二氧化硅载体上的固定化细胞，在pH 3.5下建立了100 mg/L As（III）的连续系统，在HRTs≥4 h时实现了~ 90%的As（III）氧化，而未接种的对照则表现出较慢的、不稳定的氧化。将氧化柱与较低的铁污泥床连接，形成分离柱结构，在HRT为4小时的情况下，在75天内保持98%的总As去除率，并主要产生固体上的As(V)。当进水As（III）降至20 mg/L时，未接种的系统也达到98%的去除率，表明了天然氧化剂的适应性。简化的混合柱结构在20-4 h的hrt下也实现了98%的去除，尽管As首先以As（III）的形式被吸附，随后被氧化，由于有限的fe相重组，导致配合物较弱，固体更容易浸出。尽管如此，酸热后处理将砷的浸出率降低到5.0 mg/L，这表明混合柱结构仍然是可行的，而分离柱结构提供了获得固有稳定的含砷固体的最可靠途径。

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引用次数: 0

Impact of operational mode on the relationship between quorum sensing and sludge bulking 运行模式对群体感应与污泥膨胀关系的影响

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jwpe.2026.109590

Shi Wang , Chundi Gao , Jiaxin Liu , Xuening Chang , Chen Jia , Yongzhen Peng

Suboptimal reactor conditions are pivotal in triggering sludge bulking, where quorum sensing (QS) mediates the deterioration of sludge settleability through regulating the physiological behavior of specific microorganisms. The effects of two operational modes (R1: anoxic/aerobic; R2: fully aerobic) on the performance, QS, and microbial community of the sequencing batch reactors were investigated using a prolonged feeding strategy. Both modes induced severe sludge bulking; however, the anoxic condition in R1 delayed bulking onset by approximately 10 days relative to R2. QS analysis indicated that the increase in C4-homoserine lactone (-HSL) and the decrease in C12-HSL in R1, as well as the increase in C6-HSL and the decrease in C10-HSL in R2, were significantly correlated with the sludge volume index. Functional gene dynamics revealed that the upregulation of autoinducer receptor genes coupled with the downregulation of degradation enzyme genes synergistically enhanced QS signal accumulation. Pearson's correlation analysis demonstrated that these acyl-HSLs regulated secretion of extracellular polymeric substances, particularly polysaccharides, by mediating the metabolic activities of dominant genera such as Thiothrix and Zoogloea; N-acyl-L-HSL concentrations were subject to fine-tuned feedback regulation within the microbial community, which varied with operational mode. The continuous dynamic interplay between QS and the microbial community drove changes in core system performance indicators, including pollutant removal efficiency, sludge settling characteristics, and extracellular polymeric substance secretion patterns. These findings provide a theoretical foundation for understanding the microscopic mechanisms underlying filamentous sludge bulking.

次优反应器条件是引发污泥膨胀的关键，其中群体感应（QS）通过调节特定微生物的生理行为来调节污泥沉降性的恶化。采用长时间投料策略，研究了两种操作模式（R1：缺氧/好氧；R2：全好氧）对序批式反应器性能、QS和微生物群落的影响。两种模式均引起严重的污泥膨胀；然而，R1的缺氧条件相对于R2延迟了大约10天的肿胀发作。QS分析表明，R1中c4 -高丝氨酸内酯（-HSL）的升高和C12-HSL的降低，R2中C6-HSL的升高和C10-HSL的降低与污泥体积指数显著相关。功能基因动力学表明，自诱导剂受体基因的上调与降解酶基因的下调协同增强了QS信号的积累。Pearson’s相关分析表明，这些酰基hsl通过介导优势属（如硫刺虫和Zoogloea）的代谢活动来调节细胞外聚合物物质的分泌，特别是多糖的分泌；n -酰基- l- hsl浓度在微生物群落中受微调反馈调节，随操作模式的不同而变化。QS与微生物群落之间的持续动态相互作用推动了核心系统性能指标的变化，包括污染物去除效率、污泥沉降特性和胞外聚合物分泌模式。这些发现为理解丝状污泥膨胀的微观机制提供了理论基础。

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引用次数: 0

Optimizing Pond-In-Pond wastewater treatment systems: The impact of pit placement on hydrodynamics and efficiency 优化池中池污水处理系统：坑放置对水动力学和效率的影响

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jwpe.2026.109597

Amanda Avozani , Clifford B. Fedler , Luís Carlos Soares da Silva Júnior

The Pond-in-Pond (PIP) system offers a sustainable, low-cost wastewater treatment solution for small communities with limited infrastructure. This study evaluated the hydrodynamic performance of three PIP configurations using Computational Fluid Dynamics (CFD) modeling. The three configurations were compared by varying the internal pit, the inlet location, and position in the PIP. These configurations were compared to a conventional pond (CP), as a reference. The hydraulic behavior, strongly influenced by internal geometry, was assessed through velocity distribution and tracer transport analysis. All PIP configurations exhibited longer hydraulic retention time and reduced short-circuiting compared with the reference system. The PIP 2.3, configuration with the inlet pit located farthest from the outlet, achieved the highest hydraulic efficiency, with a 70% increase over the CP. The PIP 2.2, which features an internal pit adjacent to the pond wall, showed the lowest cross-sectional velocity coefficient of variation (CV = 0.21). These results showed that the PIP 2.2 and PIP 2.3 demonstrated consistent hydrodynamic behavior, characterized by stable and uniform flow regimes. In terms of design of retrofitting existing ponds, adding a pit at the furthest point from the outlet (PIP 2.2) or as an external pit (PIP 2.3) resulted in hydraulic efficiency gains of 33% and 70%, respectively. These findings support the use of simple geometric modifications to enhance hydraulic performance without increasing operational complexity or energy demand.

池中池（PIP）系统为基础设施有限的小型社区提供了一种可持续、低成本的污水处理解决方案。本研究使用计算流体动力学（CFD）建模评估了三种PIP配置的流体动力性能。通过改变内部坑、进口位置和PIP中的位置，对三种配置进行了比较。作为参考，将这些配置与常规池（CP）进行了比较。水力特性受内部几何形状的强烈影响，通过速度分布和示踪剂输运分析进行了评估。与参考系统相比，所有PIP配置都具有更长的液压保持时间和更少的短路。PIP 2.3的进口坑位于离出口最远的位置，其水力效率最高，比CP提高了70%。PIP 2.2的内部坑靠近池塘壁，其横截面速度变化系数最低（CV = 0.21）。结果表明，pip2 .2和pip2 .3具有稳定均匀的流体力学特性。在改造现有水池的设计方面，在离出口最远的地方增加一个坑（PIP 2.2）或作为外部坑（PIP 2.3），水力效率分别提高了33%和70%。这些发现支持使用简单的几何修改来提高水力性能，而不增加操作复杂性或能源需求。

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引用次数: 0

Static magnetic field coupled with control of sludge retention time enhancing nitrogen removal via heterotrophic nitrification-aerobic denitrification 静态磁场与污泥停留时间控制相结合，通过异养硝化-好氧反硝化提高氮去除效果

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jwpe.2026.109552

Ming-Xin Su, You-Wei Cui, Rui-Chun Yang, Yuan Sui, Xin-Yu Gu, Jia-Ying Li, Ze-You Lu

Heterotrophic nitrification-aerobic denitrification (HN-AD) enables simultaneous nitrification and denitrification under aerobic conditions, reducing operational costs and carbon emissions. However, its application is hindered by the challenging in-situ enrichment of HN-AD functional bacteria. This study proposes a strategy applying a static magnetic field (SMF) and sludge retention time (SRT) control to enrich heterotrophic nitrifiers. Under SMF, nitrogen removal pathway shifted from autotrophic nitrification (AN) to heterotrophic nitrification (HN) with the highest nitrogen removal of HN achieved under 60 mT SMF. Compared to the control, the HN specific ammonia uptake rate increased by 2.65-fold, and NH₄⁺-N removal efficiency increased by 28%. Quantitative PCR showed haoA and napA copy numbers were 1.9-fold and 3.1-fold higher than the control, respectively. To further enhance HN nitrogen removal, SRT was shortened stepwise from 18 to 8 days under 60 mT SMF to wash out AN bacteria. At 10-day SRT, HN removal efficiency and activity were highest, reaching 76.38 ± 0.42% and 0.0027 ± 0.00001 mg NH₄⁺-N/(mg·MLSS·h), with haoA copy numbers rising 4.8-fold compared to 18-day SRT. Under this coupled condition, the abundance of HN-AD functional bacteria increased 8.4-fold compared to the control, with dominant HN-AD functional bacteria were Flavobacterium, Gemmobacter and Paracoccus. This study demonstrates the feasibility of applying SRT coupled with SMF to enhance nitrogen removal through HN-AD, providing a method for in-situ enrichment of HN-AD functional bacteria.

异养硝化-好氧反硝化（HN-AD）可以在好氧条件下同时进行硝化和反硝化，从而降低运营成本和碳排放。然而，它的应用受到了HN-AD功能菌原位富集的挑战。本研究提出了采用静磁场（SMF）和污泥停留时间（SRT）控制异养硝化菌富集的策略。在SMF作用下，脱氮途径由自养硝化（AN）转变为异养硝化（HN），其中60 mT SMF下HN的脱氮量最高。与对照相比，HN特定氨吸收率提高了2.65倍，NH₄+-N去除率提高了28%。定量PCR结果显示，haoA和napA的拷贝数分别比对照高1.9倍和3.1倍。为了进一步提高HN氮的去除率，在60 mT SMF下，SRT从18天逐步缩短到8天，以清除AN细菌。在SRT 10 d， HN去除率和活性最高，分别达到76.38±0.42%和0.0027±0.00001 mg NH₄+-N/(mg·MLSS·h)，与SRT 18 d相比，haoA拷贝数增加了4.8倍。在此耦合条件下，HN-AD功能菌的丰度比对照增加了8.4倍，优势功能菌为黄杆菌、Gemmobacter和副球菌（Paracoccus）。本研究验证了SRT与SMF联用增强HN-AD脱氮的可行性，为HN-AD功能菌的原位富集提供了一种方法。

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引用次数: 0

Bismuth-coated manganese hexaferrite nanoparticles as solar-activated photocatalysts for degradation of tetracycline and inactivation of antibiotic-resistant bacteria 铋包覆的六铁酸锰纳米颗粒作为四环素降解和耐药细菌灭活的光催化剂

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jwpe.2026.109560

Mahdi Kargar , Amir Hossein Hamidian , Negin Nasseh , Masoud Yousefi

This study investigates the solar-driven photocatalytic performance of a MnFe₁₂O₁₉/BiOI magnetic nanocomposite for tetracycline (TC) degradation and antibiotic-resistant bacteria (ARB) inactivation under simulated sunlight irradiation. The nanocomposite was synthesized and characterized using XRD, EDX, FTIR, FESEM, TEM, BET, and DRS confirming its successful formation and favorable structural properties. The MnFe₁₂O₁₉/BiOI nanocomposite exhibited significantly enhanced photocatalytic activity compared with its individual components, achieving complete TC degradation and effective inactivation of Klebsiella pneumoniae and methicillin-resistant Staphylococcus aureus. Furthermore, mineralization studies showed significant reductions in TOC and COD, indicating effective oxidation of organic pollutants. The catalyst also demonstrated good stability, maintaining high performance over multiple reuse cycles. Overall, these results highlight MnFe₁₂O₁₉/BiOI as an efficient, reusable, and magnetically separable photocatalyst with strong potential for advanced wastewater treatment applications.

本研究研究了MnFe12O19/BiOI磁性纳米复合材料在模拟阳光照射下对四环素（TC）降解和耐药细菌（ARB）灭活的光催化性能。通过XRD、EDX、FTIR、FESEM、TEM、BET、DRS等手段对合成的纳米复合材料进行了表征，证实了其成功形成和良好的结构性能。与单个组分相比，MnFe12O19/BiOI纳米复合材料表现出显著增强的光催化活性，实现了对肺炎克雷伯菌和耐甲氧西林金黄色葡萄球菌的完全降解和有效灭活。此外，矿化研究表明TOC和COD显著降低，表明有机污染物的有效氧化。催化剂也表现出良好的稳定性，在多次重复使用循环中保持高性能。总的来说，这些结果突出了MnFe12O19/BiOI作为一种高效、可重复使用、可磁分离的光催化剂，在高级废水处理应用中具有很强的潜力。

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引用次数: 0

Enhancement of methane production in anaerobic digestion via modified oil sludge-derived biochar additive: Mechanisms of electron transfer, proteins cleavage and microbial synergy 通过改性油泥衍生的生物炭添加剂提高厌氧消化中的甲烷产量：电子转移、蛋白质裂解和微生物协同作用的机制

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jwpe.2026.109571

Shuocheng Shao , Kaiyi Zhang , Can Xu , Shufei He , Mingsheng Li , Likui Feng , Zhelu Gao , Zixuan Zhao , Qingliang Zhao , Liangliang Wei

The escalating production of sewage sludge poses significant environmental and economic challenges, necessitating sustainable strategies for its management. This study investigated the enhancement of anaerobic digestion (AD) performance using oil sludge-derived biochar (OBC) and its modified forms—co-pyrolyzed biochar (COBC) and magnetic biochar (MOBC). Through comprehensive physicochemical characterization, MOBC exhibited superior electron donating capacity (EDC, 28.14 μmol e⁻ g⁻¹), electron accepting capacity (EAC, 66.25 μmol e⁻ g⁻¹), specific surface area (10.32 m² g⁻¹), and redox-active functional groups (e.g., CO, Fe₃O₄), attributing to the magnetization. Batch experiments demonstrated that MOBC achieved the highest cumulative methane yield (183.52 mL g⁻¹ VS), surpassing COBC (168.19 mL g⁻¹ VS), OBC (154.05 mL g⁻¹ VS), and the control (86.72 mL g⁻¹ VS). The addition of MOBC increased key enzyme activities, including protease, acetate kinase, phosphotransacetylase and coenzyme F420, compared to the control groups, facilitating hydrolysis, acidogenesis, and methanogenesis. Additionally, MOBC disrupted sludge protein secondary structures, and improved protein bioavailability, accelerating the degradation of tryptophan-like components. Furthermore, microbial community and KEGG analysis revealed that the additive of MOBC led to a significant enrichment of syntrophic bacteria (e.g., Chloroflexi) and methanogens (Methanobacterium, Methanosaeta), and upregulated genes associated with direct interspecies electron transfer (DIET) and methane metabolism pathways, further confirming its role in microbial synergy. These findings highlighted MOBC as a synergistic additive for optimizing sludge-to-energy conversion, offering a sustainable pathway for sludge valorization.

污水污泥的不断升级生产带来了重大的环境和经济挑战，需要可持续的管理战略。本研究研究了油泥源生物炭（OBC）及其改性形式——共热解生物炭（COBC）和磁性生物炭（MOBC）对厌氧消化（AD）性能的增强作用。综合理化表征表明，MOBC具有较好的给电子能力（EDC, 28.14 μmol e−g−1）、电子接受能力（EAC, 66.25 μmol e−g−1）、比表面积（10.32 m2 g−1）和氧化还原官能团（CO, Fe₃O₄）等特性。批量实验表明，MOBC的累积甲烷产量最高（183.52 mL g−1 VS），超过了COBC （168.19 mL g−1 VS）、OBC （154.05 mL g−1 VS）和对照（86.72 mL g−1 VS）。与对照组相比，添加MOBC提高了关键酶的活性，包括蛋白酶、醋酸激酶、磷酸转乙酰酶和辅酶F420，促进了水解、产酸和产甲烷。此外，MOBC破坏了污泥蛋白质的二级结构，提高了蛋白质的生物利用度，加速了色氨酸样成分的降解。此外，微生物群落和KEGG分析显示，添加MOBC可显著增加合养细菌（如Chloroflexi）和产甲烷菌（如Methanobacterium、Methanosaeta）的数量，并上调与直接种间电子转移（DIET）和甲烷代谢途径相关的基因，进一步证实了其在微生物协同作用中的作用。这些发现强调了MOBC作为优化污泥-能源转换的协同添加剂，为污泥增值提供了可持续的途径。

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引用次数: 0

Construction of metal-free 1D/2D hybrid through engineered structure evolution strategy for boosting photocatalytic hydrogen production 通过工程结构演化策略构建无金属1D/2D杂化物，促进光催化制氢

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jwpe.2026.109573

Jiahui Fu, Pingfan Zhang, Lei Wang, Wenli Zhang, Min Zhang, Yun Wang, Chunmei Li, Hongjun Dong

It remains a challenging issue for boosting the catalytic performance of the metal-free photocatalysts through structure-oriented design, although they have great application potential from a long-term economic and environmental perspective. Herein, an innovative engineered structure evolution strategy has been developed to fabricate efficient metal-free photocatalyst. In brief, through high-temperature processing of spherical-like hollow polymeric carbon nitride (PCN) enriched boron nitride (BN) quantum dots, a new metal-free 1D/2D BN/PCN hybrid is fabricated. The unique edge grafting of BN nanoribbons on the PCN nanosheets can form the built-in electric field to effectively drive photogenerated electron migration from the interior to the edge of PCN, improving carrier transfer and separation efficiency and thereby enhancing photocatalytic performance. The hydrogen production rate of the optimal BN/PCN-5% hybrid (3.784 mmol g⁻¹ h⁻¹) is 2.1-fold that of pure PCN (1.798 mmol g⁻¹ h⁻¹), and its apparent quantum yield reaches 18.4% at 420 nm. This work thus proposes a novel design strategy for metal-free photocatalysts, extendable to modifying other 2D materials.

尽管从长远的经济和环境角度来看，无金属光催化剂具有很大的应用潜力，但如何通过面向结构的设计来提高其催化性能仍然是一个具有挑战性的问题。本文提出了一种创新的工程结构演化策略来制备高效的无金属光催化剂。简单地说，通过高温处理球形中空聚合物氮化碳（PCN）富集氮化硼（BN）量子点，制备了一种新的无金属的一维/二维BN/PCN杂化材料。BN纳米带在PCN纳米片上独特的边缘接枝可以形成内置电场，有效驱动光生电子从PCN内部向边缘迁移，提高载流子转移和分离效率，从而提高光催化性能。最佳的BN/PCN-5%杂化产物产氢率（3.784 mmol g−1 h−1）是纯PCN （1.798 mmol g−1 h−1）的2.1倍，在420 nm处的表观量子产率达到18.4%。因此，这项工作提出了一种新的无金属光催化剂设计策略，可扩展到修饰其他二维材料。

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引用次数: 0

Smart fluorescent sensor based on imprinted silica-modified CdTe quantum dots for ultra-selective and sensitive detection of acetaminophen in aqueous media 基于印迹二氧化硅修饰CdTe量子点的智能荧光传感器用于水介质中对乙酰氨基酚的超选择性和灵敏检测

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jwpe.2026.109584

Abdul Majid , Tahir Raza , Liju Tan , Khuhawar Aftab Hussain , Hani Abdo , Jiangtao Wang

Acetaminophen (ACP), as an antipyretic and analgesic drug, can cause hepatotoxicity and nephrotoxicity when it is used with alcohol or other medications, and its metabolites can accumulate in aquatic environments and result in aquatic toxicity, so it is necessary to address the need for rapid, selective, and sensitive detection of ACP to mitigate its ecological impact. A novel molecularly imprinted silica modified-CdTe QDs composite (Si-CdTe@MIPs) was synthesized via the sol-gel technique for ultraselective detection of ACP for the first time. Under optimized conditions, the Si-CdTe@MIPs nanoprobe showed excellent linear behavior in the ACP concentration range of 0.21–10 μM (R² = 0.998) with high sensitivity (LOD 62.5 nM) and the imprinting factor reached (IF = 8.1). The response time was 5 min, and the fluorescence detection mechanism of Si-CdTe@MIPs was proposed to be electron/charge transfer and static process. The sensor demonstrated good reproducibility (RSD of 2.61%) and exceptional stability. The bonding of ACP and its analogs with the Si-CdTe@MIPs sensor was optimized, respectively, by employing DFT simulations, and the developed Si-CdTe@MIPs sensor showed excellent selectivity and anti-interference ability in the presence of analogs. The satisfactory recoveries of 95.18 to 107.18% were achieved with precision below 2.70% for ACP analysis in aqueous media. The resultant Si-CdTe@MIPs offered a facile approach for the rapid and sensitive analysis of ACP in complex water matrices.

对乙酰氨基酚（ACP）作为一种解热镇痛药物，与酒精或其他药物合用可引起肝毒性和肾毒性，其代谢物可在水生环境中积累，导致水生毒性，因此有必要解决对ACP的快速、选择性和敏感检测，以减轻其生态影响。本文首次利用溶胶-凝胶技术合成了一种新的分子印迹二氧化硅修饰cdte量子点复合物（Si-CdTe@MIPs），用于ACP的超选择性检测。在优化条件下，Si-CdTe@MIPs纳米探针在ACP浓度0.21 ~ 10 μM范围内线性良好（R2 = 0.998），灵敏度高（LOD 62.5 nM），印迹因子达到（IF = 8.1）。响应时间为5 min，提出Si-CdTe@MIPs的荧光检测机制为电子/电荷转移和静态过程。该传感器重现性好（RSD为2.61%），稳定性好。利用DFT模拟优化了ACP及其类似物与Si-CdTe@MIPs传感器的键合，制备的Si-CdTe@MIPs传感器在类似物存在下表现出良好的选择性和抗干扰能力。该方法在水溶液中回收率为95.18 ~ 107.18%，精密度低于2.70%。所得Si-CdTe@MIPs为复杂水基质中ACP的快速、灵敏分析提供了一种简便的方法。

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