Environmental Technology & Innovation最新文献_第5页

Effects of coexisting ions on Cr(VI) interfacial structures: A charge distribution multi-site complexation (CD-MUSIC) modeling study 共存离子对Cr（VI）界面结构的影响：电荷分布多位点络合（CD-MUSIC）模型研究

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

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-12-17 DOI: 10.1016/j.eti.2025.104710

Shenmin Zhou, Xinru Zhang, Shan Hu

Despite the fact that chromate [Cr(VI)] adsorption mechanisms have been extensively studied, there is still a lack of knowledge on the influence of typical coexisting ions on Cr(VI) surface structures. Ferrihydrite (Fh), a common naturally occurring material with enormous active sites, and titanium dioxide (TiO₂), the basis for many modified nanomaterials in wastewater treatment, were chosen as the interaction surfaces. Although TiO₂ has a higher specific surface area (196 m²·g⁻¹) than Fh (135 m²·g⁻¹), Cr(VI) adsorption on Fh significantly surpassed that of TiO₂ within pH 3.0 ∼ 8.0. The results of FTIR, XPS, and charge distribution multi-site complexation (CD-MUSIC) model testified that Cr(VI) retention on Fh occurred through monodentate and bidentate inner-sphere adsorption, whereas the inner- and outer-sphere complexes were formed on TiO₂. ClO₄^-, HCO₃^-, and SO₄^2-, which mostly undergo outer-sphere adsorption, could barely interfere with Cr(VI) adsorption on Fh, but the outer-sphere adsorption of Cr(VI) on TiO₂ was greatly inhibited. By creating a cation-bridged surface complex, Cd²⁺ significantly improved the adsorption and immobilization stability of Cr(VI), whereas Fe³⁺ competed with Cr(VI) for the surface sites. According to desorption experiments, the Cr(VI) bidentate species was less likely to redissolve than the monodentate and outer-sphere complexes. Arsenate severely inhibited Cr(VI) adsorption but increased the percentage of monodentate adsorption of Cr(VI) on Fh, which in turn improved the mobility of Cr(VI). Our findings provide molecular-level surface structures and predictive models for Cr(VI) removal in the presence of coexisting ions, which is important in the co-removal of multiple pollutants.

尽管对铬酸盐[Cr(VI)]的吸附机理进行了广泛的研究，但对典型共存离子对Cr（VI）表面结构的影响仍缺乏了解。选择天然存在的具有大量活性位点的水合铁（Fh）和废水处理中许多改性纳米材料的基础二氧化钛（TiO2）作为相互作用表面。虽然TiO2的比表面积（196 m2·g−1）高于Fh(135 m2·g−1)，但在pH 3.0 ~ 8.0范围内，Fh对Cr（VI）的吸附明显超过TiO2。FTIR、XPS和电荷分布多位点络合（CD-MUSIC）模型的结果证明，Cr（VI）在Fh上的保留是通过单齿和双齿的球内吸附实现的，而在TiO2上形成了球内和球外络合物。主要进行外球吸附的ClO4-、HCO3-和SO42-对Fh上Cr（VI）的吸附几乎没有干扰，但对TiO2上Cr（VI）的外球吸附受到了极大的抑制。通过形成阳离子桥接的表面络合物，Cd2+显著提高了Cr（VI）的吸附和固定化稳定性，而Fe3+则与Cr（VI）竞争表面位置。解吸实验表明，双齿Cr（VI）比单齿Cr（VI）和外球Cr（VI）配合物更不容易再溶解。砷酸盐严重抑制了Cr（VI）的吸附，但增加了Fh对Cr（VI）的单齿吸附率，从而提高了Cr（VI）的迁移率。我们的研究结果为共存离子存在下的Cr（VI）去除提供了分子水平的表面结构和预测模型，这在多种污染物的共去除中很重要。

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引用次数: 0

Bulking agents enhance humification and mitigate odor during kitchen waste composting by modulating bacterial dynamics 膨胀剂增强腐殖质和减轻气味在厨房垃圾堆肥通过调节细菌的动态

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

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-12-22 DOI: 10.1016/j.eti.2025.104698

Jingyuan Ma, Ruolan Tang, Ziyang Bao, Tianlong Song, Guoxue Li, Qianlin Gao, Jing Yuan

Aerobic composting is a promising strategy for kitchen waste valorization, yet inadequate humification and odor emissions hinder its efficiency and sustainability. This study investigated the effects of corn straw (CS) as a bulking agent in kitchen waste composting, employing watermelon seedlings (WS) with varying attributes to assess the influence of its physicochemical characteristics. CS addition markedly enhanced humification (HA/FA ratio increased from 0.76 to 3.11) and reduced emissions of key odorants like methyl mercaptan (MM) and H₂S by 68.12 % and 43.64 %, respectively, leading to a 62.81 % decrease in overall odor intensity. In contrast, WS addition increased the overall odor intensity by 84.42 %. Analysis of bacterial community dynamics in the CS treatment elucidated the underlying microbial mechanisms. The enhanced efficacy stems from its bidirectional microbial regulation: it propelled diversity and selectively enriched key functional guilds (e.g., Bacillus, Thermobifida, and Flavobacterium) critical for the mineralization of recalcitrant organics and humification. Concurrently, CS suppressed proliferation of taxa linked to anaerobic fermentation and sulfur reduction (e.g., Pseudomonas, Thermobacillus), thereby disrupting core malodorous metabolic pathways. These findings reveal the microbial basis for how lignocellulosic bulking agents improve compost quality and provide a practical strategy for the sustainable management of kitchen waste.

好氧堆肥是一种很有前途的厨房垃圾增值策略，但腐殖质和气味排放不足阻碍了其效率和可持续性。以不同属性的西瓜苗（WS）为研究对象，研究玉米秸秆（CS）作为膨化剂在餐厨垃圾堆肥中的作用，评价其理化特性的影响。添加CS显著增强了腐殖化作用（HA/FA比从0.76提高到3.11），降低了主要气味物质甲基硫醇（MM）和H₂S的排放量，分别降低了68.12 %和43.64 %，使总气味强度降低了62.81 %。相比之下，添加WS使总气味强度提高了84.42 %。对CS处理中细菌群落动态的分析阐明了潜在的微生物机制。这种增强的功效源于它的双向微生物调节：它促进了多样性，并选择性地丰富了关键的功能行会（如芽孢杆菌、嗜热杆菌和黄杆菌），这些行会对难降解有机物的矿化和腐殖化至关重要。同时，CS抑制了与厌氧发酵和硫还原相关的分类群（如假单胞菌、热芽孢杆菌）的增殖，从而破坏了核心的恶臭代谢途径。这些发现揭示了木质纤维素膨胀剂如何提高堆肥质量的微生物基础，并为厨房垃圾的可持续管理提供了实用的策略。

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引用次数: 0

Study on the removal of PFAS during hydrothermal carbonization of sewage sludge 污水污泥水热碳化过程中PFAS的去除研究

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

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-12-27 DOI: 10.1016/j.eti.2025.104727

G. Altiparmaki , G. Gatidou , Emma Knight , Ian Allan , D. Liakos , A.S. Stasinakis , S. Vakalis

Poly- and perfluoroalkyl substances (PFAS) are frequently detected in sewage sludge and pose significant health risks due to their persistence and bioaccumulation. Hydrothermal carbonization (HTC) offers a promising thermochemical method to manage sewage sludge while destroying embedded PFAS. This study investigated PFAS fate during HTC of PFAS-spiked sewage sludge under varied conditions (200–300 °C, 2 h), including tests on anaerobically digested sludge at 250 °C with different pressures and pH adjustments. Removal efficiencies for seven targeted PFAS were quantified across solid, liquid, and gas phases. The C5–C10 perfluorocarboxylates were removed by over 94 % under all experimental conditions included different temperatures (200–300 °C), pressures (38.3–68.3 bar) and pH rates (7 – 9) with NaOH and KOH, while C11 perfluoroundecanoic acid (PFUnDA) and perfluorooctane sulfonate (PFOS) showed only 55–75 % removal, indicating greater recalcitrance. Mass balance calculations confirmed extensive PFAS degradation, with less than 0.001 % transferred to the gas phase, as verified by UPLC/QTOF analysis. Notably, trace amounts of trifluoroacetic acid (TFA) and perfluoropentanoic acid (PFPeA) were detected in the gas phase at neutral pH but were absent at pH 9. Overall HTC performance (mass balances, pH, Chemical Oxygen Demand (COD)) was evaluated, and phytotoxicity tests highlighted that the resulting hydrochar is unsuitable for use as a soil amendment.

在污水污泥中经常检测到聚氟烷基和全氟烷基物质（PFAS），由于其持久性和生物蓄积性，对健康构成重大风险。水热炭化（HTC）提供了一种很有前途的热化学方法来管理污水污泥，同时破坏嵌入的PFAS。本研究考察了不同条件（200-300°C, 2 h）下PFAS加标污水污泥在HTC过程中的归宿，包括在250°C、不同压力和pH调节下厌氧消化污泥的试验。对固体、液体和气相中七种目标PFAS的去除效率进行了量化。在不同温度（200-300°C）、压力（38.3-68.3 bar）和pH值（7 - 9）的NaOH和KOH条件下，C5-C10全氟化羧酸的去除率均超过94% %，而C11全氟癸酸（PFUnDA）和全氟辛烷磺酸（PFOS）的去除率仅为55 - 75% %，表明更强的顽固性。质量平衡计算证实了PFAS的广泛降解，经UPLC/QTOF分析证实，PFAS转移到气相的比例小于0.001 %。值得注意的是，在中性pH下，气相中检测到微量的三氟乙酸（TFA）和全氟戊酸（PFPeA），但在pH为9时则不存在。对HTC的总体性能（质量平衡、pH值、化学需氧量（COD））进行了评估，植物毒性测试强调，所得的碳氢化合物不适合用作土壤改进剂。

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引用次数: 0

Dynamics of solvent and hydrogen production profile of a coculture of Clostridium beijerinckii and Clostridium pasteurianum 贝氏梭菌和巴氏梭菌共培养的溶剂动力学和产氢谱

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

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2026-01-15 DOI: 10.1016/j.eti.2026.104755

Okezie Emmanuel , Christopher Chukwudi Okonkwo , Thaddeus Chukwuemeka Ezeji

Exploiting renewable waste streams, such as crude glycerol from biodiesel plants and anaerobic digestate effluent (ADE), as fermentation substrates provides a sustainable route for decreasing their discharge into the environment. This study investigated the coculture of Clostridium beijerinckii NCIMB 8052 and Clostridium pasteurianum ATCC 6013 with the following objectives: (i) to determine whether coculturing enhances glycerol metabolism, (ii) to understand the interactions and population dynamics between the two species, and (iii) to characterize the fermentation products, including acetone, butanol, ethanol (ABE), 1,3-propanediol (1,3-PDO), and gases, during fermentation of mixed glucose and glycerol substrates and in a 100 % ADE-borne glucose-glycerol medium. The coculture grew in ADE-borne medium, albeit at a reduced rate, to produce ABE. Real-time quantitative polymerase chain reaction (real-time quantitative PCR) analysis of recA and gyrA copy numbers revealed that the microbial consortium comprised ⁓60 % C. beijerinckii and 40 % C. pasteurianum during ABE fermentation. Gas chromatography showed that cumulative hydrogen production by the coculture was ⁓1.47- and 1.48-fold higher than in C. pasteurianum and C. beijerinckii monocultures, respectively. Interestingly, the coculture did not produce 1,3-PDO, and gene expression and enzymatic assays indicated significant (P < 0.05) repression of glycerol-to-1,3-PDO production pathways in C. pasteurianum. These findings demonstrate synergistic interactions within the coculture of C. pasteurianum and C. beijerinckii, as evidenced by enhanced growth, increased butanol and hydrogen production profiles, and the elimination of 1,3-PDO formation. The study further highlights the feasibility of employing ADE as a renewable, waste-derived substitute for conventional potable water and nutrients in ABE fermentation and sustainability.

利用可再生废物流，如生物柴油厂的粗甘油和厌氧消化废水（ADE），作为发酵底物，为减少它们排放到环境中提供了一条可持续的途径。本研究对贝氏梭菌NCIMB 8052与巴氏梭菌ATCC 6013的共培养进行了研究。(i)确定共培养是否能促进甘油代谢，（ii）了解两个物种之间的相互作用和种群动态，以及（iii）表征混合葡萄糖和甘油底物发酵过程中的发酵产物，包括丙酮、丁醇、乙醇（ABE）、1,3-丙二醇（1,3- pdo）和气体，以及在100% % ade的葡萄糖-甘油培养基中发酵。共培养物在ade培养基中生长，尽管速率降低，但仍能产生ABE。实时定量聚合酶链反应（Real-time quantitative PCR）对recA和gyrA拷贝数的分析显示，在ABE发酵过程中，微生物联合体包括⁓60 %的贝氏弧菌和40 %的巴氏弧菌。气相色谱分析结果表明，共培养的累积产氢量⁓分别比单一培养的巴氏梭菌和贝氏梭菌高1.47倍和1.48倍。有趣的是，共培养没有产生1,3- pdo，基因表达和酶分析表明，C. pasteuranum中甘油到1,3- pdo的生产途径被显著抑制（P <； 0.05）。这些发现表明，巴氏梭菌和贝氏梭菌共培养中存在协同相互作用，这可以通过促进生长、增加丁醇和氢气产量以及消除1,3- pdo的形成来证明。该研究进一步强调了在ABE发酵中使用ADE作为传统饮用水和营养物质的可再生废物替代品的可行性和可持续性。

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引用次数: 0

Plant growth-promoting rhizobacteria as ecological architects of soil ecosystems; Future perspectives 促进植物生长的根瘤菌作为土壤生态系统的生态建筑师未来的视角

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

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2026-01-15 DOI: 10.1016/j.eti.2026.104759

Ugur Azizoglu, Estibaliz Sansinenea, Aurelio Ortiz, Leandris Argentel-Martínez, Ofelda Peñuelas-Rubio, Jae-Ho Shin

Soil degradation from intensive agriculture, erosion, and climate change increasingly threatens critical functions such as nutrient cycling, water retention, aggregate stability, and biodiversity. Plant growth-promoting rhizobacteria (PGPR) are emerging as key players in redesigning resilient soil ecosystems. Beyond conventional biofertilizer roles, PGPR enable green synthesis of nanoparticles for soil remediation and targeted nutrient delivery, support engineered microbial consortia for optimized rhizosphere functions, and enhance climate resilience through improved drought tolerance, salinity resistance, and carbon sequestration. These advances position PGPR as ecological architects that can restore soil health and support sustainable agriculture under environmental stress.

集约化农业、水土流失和气候变化导致的土壤退化日益威胁到土壤的关键功能，如养分循环、保水、团聚体稳定性和生物多样性。促进植物生长的根瘤菌（PGPR）正在成为重新设计弹性土壤生态系统的关键参与者。除了传统的生物肥料作用外，PGPR还可以实现纳米颗粒的绿色合成，用于土壤修复和有针对性的养分输送，支持工程微生物群落优化根际功能，并通过提高耐旱性、耐盐性和碳固存能力来增强气候适应能力。这些进展将PGPR定位为生态建筑师，可以在环境压力下恢复土壤健康并支持可持续农业。

引用次数: 0

Sustainable biodiesel production from waste cooking oil: Process design and techno-economic comparison of homogeneous and heterogeneous catalysis 从废食用油中可持续生产生物柴油：均相和多相催化的工艺设计和技术经济比较

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

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2026-01-28 DOI: 10.1016/j.eti.2026.104775

Maya Yaghi , Nancy Zgheib , Hosni Takache , Denys Grekov , Youssef El Rayess , Sary Awad

This study aims to design and model four different semi-continuous process scenarios for biodiesel production, using virgin oil (VO) as a reference feedstock and waste cooking oil (WCO) collected from restaurants in Beirut. Both heterogeneous and homogeneous catalyst configurations were assessed by a thorough techno-economic analysis to identify the most efficient and cost-effective approach. A total collectable quantity of 22,740 kg/week of WCO was processed for the biodiesel production, representing a collection rate of 45 %. The project was developed with a 15 years lifetime and a target payback period (PBP) of 5 years. CaO and Amberlyst 46 were chosen as heterogeneous catalysts for transesterification and esterification, respectively, while KOH and H₂SO₄ were identified as reference homogeneous catalysts. Technical evaluations revealed that heterogeneous configurations were simpler, requiring fewer treatment steps compared to homogeneous ones, which necessitate catalyst neutralization and extensive purification of biodiesel and glycerol. The economic impact of the catalyst regeneration section was analyzed, particularly for the heterogeneous configurations examined without the CaO regeneration section. The economic feasibility of each setup was evaluated with focus on production capacity and how it impacts the PBP, using a 5-year payback as the reference. Among all configurations, the heterogeneous process without CaO regeneration required the lowest feedstock input of 5600 kg/day to achieve the 5-year payback target. However, as production capacity increased, the economic difference between configurations with and without catalyst regeneration decreased, indicating that catalyst regeneration becomes economically advantageous at larger scales.

本研究旨在设计和模拟四种不同的半连续生产生物柴油的工艺方案，使用初榨油（VO）作为参考原料和从贝鲁特餐馆收集的废食用油（WCO）。通过全面的技术经济分析评估了多相和均相催化剂配置，以确定最有效和最具成本效益的方法。用于生产生物柴油的WCO可收集总量为22,740 公斤/周，收集率为45% %。该项目开发寿命为15年，目标投资回收期（PBP）为5年。选择CaO和Amberlyst 46分别作为酯交换反应和酯化反应的非均相催化剂，选择KOH和H₂SO₄作为参考均相催化剂。技术评估表明，与均相结构相比，非均相结构更简单，所需的处理步骤更少，而均相结构则需要催化剂中和和大量纯化生物柴油和甘油。对催化剂再生部分的经济影响进行了分析，特别是对没有CaO再生部分的非均相结构进行了研究。以5年的投资回报为参考，重点评估了每个装置的经济可行性，以及其对PBP的影响。在所有配置中，无CaO再生的异构工艺所需的最低原料投入量为5600 kg/天，以实现5年的投资回报目标。然而，随着生产能力的增加，有和没有催化剂再生的配置之间的经济差异减小，表明催化剂再生在更大的规模上具有经济优势。

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引用次数: 0

Sustainable corncob-derived sulfonated carbon catalysts for recyclable biginelli reactions in palm oil 可持续玉米芯衍生的磺化碳催化剂用于棕榈油的可回收biginelli反应

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

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-12-09 DOI: 10.1016/j.eti.2025.104691

Pakin Noppawan , Pareenat Waenthongkham , Kanyaphat Torboon , Yuvarat Ngernyen , Supinya Nijpanich , Paveena Laokul , Andrew J. Hunt

This study presents a significant advancement in sustainable catalysis through the development of a sulfonated carbon catalyst derived from agricultural corncob waste for the green synthesis of dihydropyrimidinones (DHPMs) via the Biginelli reaction. Employing a simple, metal-free activation and sulfonation method, the optimized catalyst (SKAC1:1–600) exhibited a high acid site density (1.69 mmol g⁻¹), excellent thermal stability, and outstanding catalytic efficiency, achieving up to 99.65 % yield under mild conditions (115 °C, 8 h). Notably, palm oil was employed as a biodegradable and reusable reaction medium, enabling both the catalyst and solvent to be recycled for at least four cycles with minimal loss in yield. The catalytic platform demonstrated broad substrate compatibility with various aldehydes and β-diketones. Comprehensive characterization (FTIR, XRD, SEM-EDS, TEM, BET, TGA, XPS, and NMR) confirmed the successful surface functionalization anfid structural integrity of the catalyst. Green metrics further highlighted the environmental credentials of the system, with an atom economy of 87–97 %, a low process mass intensity (PMI) of 15–21 g g⁻¹, and an E-factor of 14–20 g g⁻¹. This is the first report to integrate corncob-derived sulfonated carbon and palm oil in a synergistic, waste-to-wealth catalytic system, offering high yield, excellent reusability, and superior green performance. This work establishes a new benchmark in biomass valorization and eco-efficient multicomponent synthesis, providing a scalable and cost-effective solution that aligns with circular economy and green chemistry principles.

Synopsis

A sustainable Biginelli reaction is developed using sulfonated carbon catalysts from corncob waste and recyclable palm oil.

本研究通过开发一种从农业玉米芯废料中提取的磺化碳催化剂，通过Biginelli反应绿色合成二氢嘧啶（DHPMs），在可持续催化方面取得了重大进展。采用简单的无金属活化磺化方法，优化后的催化剂（SKAC1:1-600）具有较高的酸位密度（1.69 mmol g−1）、良好的热稳定性和优异的催化效率，在温和的条件下（115°C, 8 h），产率可达99.65 %。值得注意的是，棕榈油被用作可生物降解和可重复使用的反应介质，使催化剂和溶剂可以循环使用至少四个循环，而产量损失最小。该催化平台与多种醛和β-二酮具有广泛的底物相容性。综合表征（FTIR， XRD, SEM-EDS， TEM， BET， TGA， XPS和NMR）证实了催化剂的成功表面功能化和结构完整性。绿色指标进一步强调了系统的环境证书，原子经济性为87-97 %，低过程质量强度（PMI）为15-21 g g−1，e因子为14-20 g g−1。这是第一个将玉米芯衍生的磺化碳和棕榈油整合在一个协同的废物转化为财富的催化系统中的报告，具有高产量，优异的可重复使用性和卓越的绿色性能。这项工作建立了生物质增值和生态高效多组分合成的新基准，提供了一种符合循环经济和绿色化学原则的可扩展且具有成本效益的解决方案。摘要以玉米芯废料和可回收棕榈油为原料，采用磺化碳作为催化剂，开发了一种可持续的Biginelli反应。

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引用次数: 0

One-step synthesis of hierarchical porous Fe-supported biochar for rapid and efficient removal of antibiotics from water 一步法合成分级多孔铁负载生物炭用于快速高效去除水中抗生素

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

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-12-15 DOI: 10.1016/j.eti.2025.104699

Jun Dong , Yuanjun Tang , Jiayin Ma , Peikun Jiang , Yinxiu Liu , Ruohui Lu , Yin Li , Shuqi Li , Yangqing Hu , Fei Wang

The widespread use of antibiotics has led to their accumulation in water, posing serious environmental risks. Biochar has emerged as a promising adsorbent for antibiotic removal, but its performance is often limited by low capacity and slow kinetics, especially for high-molecular-weight antibiotics. In this study, a hierarchical porous Fe-supported biochar (HPFeBC) was synthesized via one-step pyrolysis of pine sawdust using Fe(NO₃)₃ as both activator and template. The obtained HPFeBC exhibited a well-interconnected pore structure with a high surface area (417.23 m²/g) and enhanced mesoporosity, significantly improving mass transfer and accessibility of adsorption sites. HPFeBC demonstrated exceptional adsorption performance for both low-molecular-weight antibiotic tetracycline (TC) and high-molecular-weight antibiotic tylosin (TYL), with maximum capacities of 361.23 mg/g and 173.61 mg/g, respectively. Notably, HPFeBC achieved rapid adsorption equilibrium within 5 mins for TC and 30 mins for TYL, far surpassing commercial adsorbents. The adsorption process followed the pseudo-second-order kinetics and the Freundlich isotherm model, and thermodynamic analysis confirmed the spontaneous and endothermic nature of adsorption. The adsorption mechanism involved pore filling, π-π interactions, hydrogen bonding, surface complexation, and limited redox reaction. HPFeBC also exhibited excellent stability over a wide pH range, strong anti-interference ability, and good reusability. Overall, the synthesis HPFeBC can act as an effective candidate for rapid and efficient removal of antibiotics from water.

抗生素的广泛使用导致其在水中积聚，构成严重的环境风险。生物炭已成为一种很有前途的抗生素去除吸附剂，但其性能往往受到低容量和慢动力学的限制，特别是对于高分子量抗生素。在本研究中，以Fe(NO3)3为活化剂和模板剂，通过一步热解法合成了层次化多孔Fe负载生物炭（HPFeBC）。制备的HPFeBC具有良好的孔隙结构，具有较高的比表面积（417.23 m2/g）和介孔率，显著改善了传质和吸附位点的可及性。HPFeBC对低分子量抗生素四环素（TC）和高分子量抗生素泰络素（tylosin）均表现出优异的吸附性能，最大吸附量分别为361.23 mg/g和173.61 mg/g。值得注意的是，HPFeBC在5 min内达到了TC的快速吸附平衡，在30 min内达到了TYL的快速吸附平衡，远远超过了商用吸附剂。吸附过程符合拟二级动力学和Freundlich等温模型，热力学分析证实了吸附的自发和吸热性质。吸附机理包括孔隙填充、π-π相互作用、氢键、表面络合和有限氧化还原反应。HPFeBC在较宽的pH范围内具有良好的稳定性，抗干扰能力强，可重复使用。综上所述，合成的HPFeBC可作为快速高效去除水中抗生素的有效候选物。

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引用次数: 0

The synergistic performance of redox couples enhanced with phase inter-grown ceria-zirconia-alumina mixed oxides: A robust three-way catalyst for diesel exhaust abatement 相间生长的铈-锆-氧化铝混合氧化物增强氧化还原对的协同性能：一种用于柴油废气减排的强大三向催化剂

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

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-12-17 DOI: 10.1016/j.eti.2025.104708

Varuna Jayachandran , Priyadharsini Natesan , Balaji Chettiannan , Jet-Chau Wen , Talat Ali , Mohd Shkir , Elango Muniappan , Sambasivam Sangaraju

The CeO₂-ZrO₂ and Al₂O₃ (75 wt% and 25 wt%) were prepared by co-precipitation route, calcined at 500 °C for 5 h and mechanically mixed. Three compositions of Ce/Zr (20:80, 50:50, and 80:20) were synthesized and their microstructural properties was observed via X-ray diffraction (XRD), and Raman analysis. The CeO₂-ZrO₂/Al₂O₃ (Ce/Zr-50:50) sample reveals the mixed phase formation of cubic and tetragonal, which facilitates the catalytic activity via oxygen ion diffusion from O^2- sub-lattice to the sample surface. The CeO₂-ZrO₂/Al₂O₃ (Ce/Zr-50:50) was further investigated using High-resolution transmission electron microscope (HRTEM), Brunauer-Emmett-Teller (BET) study, X-ray photoelectron spectroscopy (XPS), and Scanning electron microscope (SEM). The surface area of CeO₂-ZrO₂/Al₂O₃ (Ce/Zr −50:50) was 91.2 m² g⁻¹, which provides surface active oxygen species to participate in diesel exhaust treatment via redox reactions. The XPS spectra of CeO₂-ZrO₂/Al₂O₃ (Ce/Zr −50:50) sample confirms the Ce³⁺ reduction along with the formation of oxygen vacancies. To perform catalytic reaction, the CeO₂-ZrO₂/Al₂O₃ (Ce/Zr −50:50) sample was coated on the perforated stainless-steel substrates by a unique and cost-effective technique, which could be economically advantageous to produce the catalyst for commercial uses on a large scale. The sample was tested at different load conditions. At maximum load condition, the sample exhibited substantial reduction in CO, HC, CO₂, NO_x, and smoke.

采用共沉淀法制备CeO2-ZrO2和Al2O3(75 wt%和25 wt%)，在500℃下煅烧5 h，机械混合。合成了三种Ce/Zr（20:80, 50:50和80:20）的成分，并通过x射线衍射（XRD）和拉曼分析观察了它们的微观结构特性。CeO2-ZrO2/Al2O3 （Ce/Zr-50:50）样品显示出立方和四方混合相的形成，这有利于氧离子从O2-亚晶格扩散到样品表面的催化活性。采用高分辨率透射电子显微镜（HRTEM）、布鲁诺尔-埃米特-泰勒（BET）、x射线光电子能谱（XPS）和扫描电子显微镜（SEM）对CeO2-ZrO2/Al2O3 （Ce/Zr-50:50）进行了进一步的研究。CeO2-ZrO2/Al2O3 （Ce/Zr−50:50）的表面积为91.2 m2 g−1，为柴油机尾气的氧化还原处理提供了表面活性氧。CeO2-ZrO2/Al2O3 （Ce/Zr−50:50）样品的XPS光谱证实了Ce3+的还原以及氧空位的形成。为了进行催化反应，将CeO2-ZrO2/Al2O3 （Ce/Zr−50:50）样品通过一种独特且经济高效的技术涂覆在多孔不锈钢衬底上，可以在经济上大规模生产用于商业用途的催化剂。对试样进行了不同载荷条件下的试验。在最大负载条件下，样品中CO、HC、CO2、NOx和烟雾的含量显著降低。

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引用次数: 0

Removal of gaseous volatile organic compounds using zinc chloride-activated cattle manure-derived biochar 利用氯化锌活化牛粪生物炭去除气态挥发性有机化合物

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

Environmental Technology & Innovation

Pub Date : 2026-03-01 Epub Date: 2025-12-15 DOI: 10.1016/j.eti.2025.104706

Jiseok Hong, Jeryang Park, Ijung Kim

This study investigates the adsorption performance of cattle manure-derived biochar for volatile organic compound (VOC) removal in a continuous-flow column system. ZnCl₂ pretreatment followed by the pyrolysis at 600 °C produced the most significant increases in both specific surface area and adsorption capacity, as ZnCl₂-enabled dehydration/aromatization, volatilization during pyrolysis, and subsequent ash removal by acid washing collectively developed micropores. The resultant biochar possessed abundant micropores that favor physisorption-dominated VOC uptake through van der Waals interactions and pore filling. As the pyrolysis temperature increased, the unused bed length decreased, indicating improved adsorption efficiency and bed utilization. Kinetic fitting revealed that the intraparticle diffusion model provided the best agreement, confirming that physical adsorption controlled by pore diffusion is the governing mechanism. The Yoon–Nelson and Thomas models precisely predicted the 50 % breakthrough time (τ) and equilibrium adsorption capacity (qₑ), validating their applicability for column design and process scale-up. Moreover, a 10 g biochar column sustained sub-breakthrough VOC concentrations for over two days, demonstrating robust long-term adsorption stability. Overall, these findings highlight that waste-derived ZnCl₂-activated biochar can serve as a sustainable, high-performance, and viable adsorbent for on-site air quality management in livestock environments.

本研究研究了牛粪生物炭在连续流柱系统中对挥发性有机化合物（VOC）的吸附性能。ZnCl 2预处理后在600℃下进行热解，其比表面积和吸附容量的增加最为显著，因为ZnCl 2的脱水/芳化、热解过程中的挥发以及随后的酸洗除灰共同形成了微孔。所得生物炭具有丰富的微孔，有利于通过范德华相互作用和孔隙填充物理吸附主导的VOC吸收。随着热解温度的升高，未使用床长减小，表明吸附效率和床利用率提高。动力学拟合结果表明，颗粒内扩散模型具有较好的一致性，证实了孔隙扩散控制的物理吸附是控制机理。Yoon-Nelson和Thomas模型精确预测了50% %的突破时间（τ）和平衡吸附容量（qₑ），验证了它们在色谱柱设计和工艺放大中的适用性。此外，10 g的生物炭柱可维持低于突破的VOC浓度超过两天，显示出强大的长期吸附稳定性。综上所述，这些研究结果表明，废物来源的ZnCl 2活化生物炭可以作为一种可持续的、高性能的、可行的吸附剂，用于家畜环境的现场空气质量管理。

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引用次数: 0