Environmental Technology & Innovation最新文献

Co-valorization of shrimp and tropical wood waste to high-value composites: Fabrication, characterization, and herbicide adsorption studies 虾和热带木材废料的高价值复合材料的共同增值：制造、表征和除草剂吸附研究

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

Environmental Technology & Innovation

Pub Date : 2025-12-10 DOI: 10.1016/j.eti.2025.104692

Hamant E. France , Julia Pohling , O.L.K. Strong , Tyler M. Roy , Andrew J. Vreugdenhil , Yuana Yesika

The current work underscores the potential of using copious waste streams to fabricate high value composite adsorbents which are then used in environmental remediation. The study investigates the fabrication of nitrogen-enriched adsorbents by the co-valorization of shrimp hydrochar, shrimp chitin, and shrimp shells with a waste wood feedstock, greenheart, by a facile, phosphoric acid activation process. These materials were characterized and subsequently deployed to remove 2,4-dichlorophenoxy acetic acid from model solutions at 50 ppm concentration at pH 7. Shrimp shell and shrimp hydrochar composites were typically mesoporous but shrimp chitin composites were microporous. Specific surface area ranged from 1224 m²/g to 1974 m²/g. Surface nitrogen peaked at 2.94 at% with amine, amide and imide function predominating. The largest specific surface area and greatest nitrogen content of composites was more than 56 % and 5 times greater than the pristine greenheart adsorbent. Nitrogen functionality was uniformly distributed on the composite surface implying that there was homogeneous combination of the co-valorized feedstocks. The shrimp-chitin-greenheart composite was most efficient at removing 2,4-D with a maximum adsorption capacity of 101 mg/g. Maximum adsorption capacities of composites were most strongly correlated with amine groups (0.86), total nitrogen (0.88), total surface nitrogen density (0.90) and specific surface area (0.87), demonstrating that both surface area and nitrogen functionality played a pivotal role in the adsorption. The Freundlich isotherm model best described the adsorption process, implying the heterogeneous nature of adsorption sites. Adsorption was spontaneous and entropically favored and adsorption enthalpies ranged from −12 kJ/mol to −17 kJ/mol indicating that physisorption interactions dominated the adsorption process. These composites, with demonstrated efficacy in removing 2,4-D, are promising environmental remediation materials.

目前的工作强调了利用丰富的废物流制造高价值复合吸附剂的潜力，然后将其用于环境修复。本研究通过简单的磷酸活化工艺，研究了虾烃类、虾甲壳素和虾壳与废木材原料绿心共同增值制备富氮吸附剂的方法。对这些材料进行了表征，随后将其用于在pH为7的情况下，以50 ppm的浓度从模型溶液中去除2,4-二氯苯氧乙酸。虾壳和虾碳氢化合物复合材料是典型的介孔材料，而虾甲壳素复合材料是微孔材料。比表面积为1224 m2/g ~ 1974 m2/g。表面氮的峰值为2.94 at%，以胺、酰胺和亚胺为主。复合材料的最大比表面积和最大含氮量均大于56% %，是原始绿心吸附剂的5倍。氮官能团在复合材料表面分布均匀，说明共价原料的组合是均匀的。虾-几丁质-绿心复合材料去除2,4- d的效率最高，最大吸附量为101 mg/g。复合材料的最大吸附量与胺基（0.86）、总氮（0.88）、总表面氮密度（0.90）和比表面积（0.87）的相关性最强，表明比表面积和氮官能团在吸附过程中起关键作用。Freundlich等温模型最好地描述了吸附过程，暗示了吸附位点的非均相性质。吸附是自发的，熵有利的，吸附焓在−12 ~−17 kJ/mol之间，表明物理吸附作用主导了吸附过程。这些复合材料具有良好的去除2,4- d的效果，是很有前途的环境修复材料。

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引用次数: 0

Enhanced visible light PMS activation through novel direct Z-scheme heterojunction of N-doped TiO2 and O-laden g-C3N4 n掺杂TiO2与o负载g-C3N4的新型直接Z-scheme异质结增强可见光PMS活化

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

Environmental Technology & Innovation

Pub Date : 2025-12-09 DOI: 10.1016/j.eti.2025.104693

Lixiang Wang , Qiang Ren , Xiaoli Wang

A novel direct Z-scheme heterojunction (NTMO) was synthesized via N-doped TiO₂ and O-doped carbon nitride integration, exhibiting exceptional visible-light photoactivity. Elemental doping narrowed the bandgap and improved the separation efficiency of photo-induced carriers in the heterojunction. Especially, O doping enhanced the adsorption capacity of the heterojunction for PMS, indicating that the presence of O could improve PMS activation through photo-induced electron. The NTMO/PMS system achieved 99.0 % trichloroethylene (TCE) degradation within 1 h 4.7 times and 2.4 times faster than pure TiO₂ and MCN, respectively. Mechanistic studies identified •SO₄^– and h⁺ as dominant reactive species. Furthermore, NTMO exhibited high stability after five cycles of testing. This work provides an efficient visible-light-driven strategy for persistent organic pollutant remediation.

通过n掺杂TiO2和o掺杂氮化碳集成合成了一种新型的直接z型异质结（NTMO），具有优异的可见光活性。元素掺杂可以缩小带隙，提高光致载流子在异质结中的分离效率。特别是O掺杂增强了异质结对PMS的吸附能力，表明O的存在可以通过光致电子提高PMS的活化能力。NTMO/PMS体系在1 h内对三氯乙烯（TCE）的降解率达到99.0 %，分别比纯TiO2和MCN快4.7倍和2.4倍。机理研究表明，•SO4 -和h+是主要的反应物质。此外，经过5次循环测试，NTMO表现出较高的稳定性。这项工作为持久性有机污染物的修复提供了一种有效的可见光驱动策略。

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 : 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

Integrated machine learning frameworks identified serum lipidomic mediators of per- and polyfluoroalkyl substances (PFAS)-associated esophageal cancer risk 综合机器学习框架确定了与全氟烷基物质和多氟烷基物质（PFAS）相关的食管癌风险的血清脂质学介质

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

Environmental Technology & Innovation

Pub Date : 2025-12-09 DOI: 10.1016/j.eti.2025.104689

Hu Zhang , Wen Xiong , Hong Guo , Ruijun Dong , Bing Wang , Junpeng Xia , Chao Zhao , Qianqian Wang , Qingtong Shi

Per- and polyfluoroalkyl substances (PFAS) are ubiquitous emerging environmental contaminants which carcinogenic potential is attracting increasing concern. However, the systematic investigations on the link between exposure to PFAS and esophageal cancer (EC) risk remained scarce, especially in high incidence regions such as China. We conducted a case-control study including 422 EC cases and healthy controls. Nine PFAS congeners in serum samples were quantified and established the comprehensive lipidomic profiles. The results showed that two legacy PFAS demonstrated independent positive associations: PFOA (OR: 2.14, 95 % CI: 1.18–4.08) and PFOS (OR: 1.92, 95 % CI: 1.16–3.32). Conversely, exposure to PFNA exhibited association with the reduced likelihood of EC (P < 0.05). Notably, the novel PFOS substitute 6:2 Cl-PFESA was also correlated with the increased risk of EC (OR=1.72; 95 %CI: 1.12–2.76). Machine learning analysis consistently identified PFOA, PFOS, Cl-PFESAs as key PFASs distinguishing EC development. BKMR and WQS regression analysis indicated the overall positive correlation between PFAS mixture and EC risk. Lipidomics analysis revealed that fatty acid metabolism disorders were the primary differential lipid metabolic pathways, with serum PFAS levels closely associated with fatty acids (FAs). Among these, FA 16:1, FA 18:1, FA 22:6, and glycerophospholipids demonstrated significant mediation in the link between PFAS exposure and EC risk. This study underscored the critical need for prospective studies to illuminate health implications of PFAS-associated alterations in lipid metabolic reprogramming on EC.

全氟和多氟烷基物质（PFAS）是普遍存在的新型环境污染物，其致癌性日益引起人们的关注。然而，关于PFAS暴露与食管癌（EC）风险之间关系的系统调查仍然很少，特别是在中国等高发地区。我们进行了一项病例对照研究，包括422例EC病例和健康对照。对血清样品中的9个PFAS同源物进行定量分析，建立全面的脂质组学图谱。结果显示，两种遗留的PFAS表现出独立的正相关：PFOA （OR: 2.14, 95 % CI: 1.18-4.08）和PFOS （OR: 1.92, 95 % CI: 1.16-3.32）。相反，PFNA暴露与EC可能性降低相关（P <； 0.05）。值得注意的是，新型全氟辛烷磺酸替代品6:2 Cl-PFESA也与EC风险增加相关（OR=1.72; 95 %CI: 1.12-2.76）。机器学习分析一致地识别出PFOA、PFOS、cl - pfesa是区分EC发展的关键PFASs。BKMR和WQS回归分析显示，PFAS混合物与EC风险总体呈正相关。脂质组学分析显示脂肪酸代谢紊乱是主要的脂质代谢途径，血清PFAS水平与脂肪酸（FAs）密切相关。其中，FA 16:1, FA 18:1， FA 22:6和甘油磷脂在PFAS暴露与EC风险之间具有显著的中介作用。这项研究强调了前瞻性研究的迫切需要，以阐明pfas相关的脂质代谢重编程改变对EC的健康影响。

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引用次数: 0

Spatiotemporal leaching dynamics and mechanistic insights into heavy metal release from ion-adsorbed rare earth tailings under acid rain conditions 酸雨条件下离子吸附稀土尾矿重金属释放的时空浸出动力学及机理研究

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

Environmental Technology & Innovation

Pub Date : 2025-12-09 DOI: 10.1016/j.eti.2025.104690

Buchan Zhou , Xiaojun Zheng , Sheng Zhang , Zongli Wang , Jie Xiao , Ming Chen

Acid rain not only triggers the release of heavy metals from ion-adsorption rare earth tailings, but also shapes their spatiotemporal distribution, increasing environmental risks. This study investigated the release behavior and spatiotemporal distribution of heavy metals in ion-adsorption rare earth tailings under acid rain conditions using static and column leaching experiments. The analysis indicated that in the tailings of the study area, the concentrations of As, Mn, Pb, Zn, Cd, Cu and Cr reached 35.35、542.68、209.73、178.21、0.82、31.34、82.82 mg⋅kg^⁻1, respectively, which were several times higher than the background values, indicating that mining activities cause serious pollution. Static leaching experiments identified As, Mn, Pb, and Zn as priority pollutants requiring control. Dynamic column leaching studies revealed that, from the time dimension, the heavy metal release process could be clearly divided into two stages: rapid leaching and slow release; from the spatial dimension, it exhibited a "low at the bottom, high at the top" vertical gradient pattern, with the leachate concentrations of As, Mn, Pb, and Zn significantly exceeding environmental limits. The DoseResp model accurately fitted all heavy metal leaching processes. Key factors controlling heavy metal migration included chemical speciation, rainfall pH,

{SO}_{4}^{2 -}

concentration, ammonia nitrogen, and mineral properties, with acid-extractable fractions showing preferential release during leaching. The research findings provide a scientific basis for ecological restoration of ion-adsorption rare earth mines and source control of heavy metal pollution in tailings.

酸雨不仅会触发离子吸附型稀土尾矿中重金属的释放，还会影响其时空分布，增加环境风险。采用静态和柱式浸出试验研究了酸雨条件下离子吸附稀土尾矿中重金属的释放行为和时空分布。分析表明，研究区尾矿中As、Mn、Pb、Zn、Cd、Cu、Cr的浓度分别达到35.35、542.68、209.73、178.21、0.82、31.34、82.82 mg⋅kg⁻1，高于背景值数倍，表明采矿活动造成了严重的污染。静态浸出实验确定砷、锰、铅和锌是需要优先控制的污染物。动态柱浸研究表明，从时间维度上看，重金属释放过程可明确分为快速浸出和缓慢释放两个阶段；从空间维度上看，渗滤液中As、Mn、Pb、Zn的浓度明显超过环境限值，呈现出“下低上高”的垂直梯度格局。DoseResp模型准确地拟合了所有重金属浸出过程。控制重金属迁移的关键因素包括化学形态、降雨pH、SO42−浓度、氨氮和矿物性质，其中酸萃取组分在浸出过程中优先释放。研究结果为离子型稀土矿生态修复和尾矿重金属污染源头治理提供了科学依据。

{"title":"Spatiotemporal leaching dynamics and mechanistic insights into heavy metal release from ion-adsorbed rare earth tailings under acid rain conditions","authors":"Buchan Zhou , Xiaojun Zheng , Sheng Zhang , Zongli Wang , Jie Xiao , Ming Chen","doi":"10.1016/j.eti.2025.104690","DOIUrl":"10.1016/j.eti.2025.104690","url":null,"abstract":"<div><div>Acid rain not only triggers the release of heavy metals from ion-adsorption rare earth tailings, but also shapes their spatiotemporal distribution, increasing environmental risks. This study investigated the release behavior and spatiotemporal distribution of heavy metals in ion-adsorption rare earth tailings under acid rain conditions using static and column leaching experiments. The analysis indicated that in the tailings of the study area, the concentrations of As, Mn, Pb, Zn, Cd, Cu and Cr reached 35.35、542.68、209.73、178.21、0.82、31.34、82.82 mg⋅kg<sup>⁻1</sup>, respectively, which were several times higher than the background values, indicating that mining activities cause serious pollution. Static leaching experiments identified As, Mn, Pb, and Zn as priority pollutants requiring control. Dynamic column leaching studies revealed that, from the time dimension, the heavy metal release process could be clearly divided into two stages: rapid leaching and slow release; from the spatial dimension, it exhibited a \"low at the bottom, high at the top\" vertical gradient pattern, with the leachate concentrations of As, Mn, Pb, and Zn significantly exceeding environmental limits. The DoseResp model accurately fitted all heavy metal leaching processes. Key factors controlling heavy metal migration included chemical speciation, rainfall pH, <span><math><msubsup><mrow><mtext>SO</mtext></mrow><mrow><mn>4</mn></mrow><mrow><mn>2</mn><mo>−</mo></mrow></msubsup></math></span> concentration, ammonia nitrogen, and mineral properties, with acid-extractable fractions showing preferential release during leaching. The research findings provide a scientific basis for ecological restoration of ion-adsorption rare earth mines and source control of heavy metal pollution in tailings.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104690"},"PeriodicalIF":7.1,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145750293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heavy metals leaching control in fly ash through cement and chelating agent solidification: A microstructural evolution kinetics study 水泥和螯合剂固化控制粉煤灰重金属浸出：微观组织演化动力学研究

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

Environmental Technology & Innovation

Pub Date : 2025-12-09 DOI: 10.1016/j.eti.2025.104694

Zongyu Mu , Qingqi Die , Fei Wang , Qifei Huang , Siqi Xu , Yufei Yang , Zhongli Luo

Heavy metals exhibit high leachability in municipal solid waste incineration fly ash (MSWI FA), which brings severe environmental threats. The solidification/stabilization (S/S) of heavy metals can not be achieved by using cement alone to comply with the regulatory standard of China. The study explored the effect and mechanism of S/S heavy metals in FA with different dosages of piperazine chelating agent (TS300) and ordinary Portland cement (OPC525). The kinetic results additionally reveal surface wash-off as the predominant leaching mechanism. This study quantified the regulatory effects of TS300 on physical transport properties of OPC525 matrix through non-reactive tracer technique. Despite the more open pore network, heavy metals were effectively immobilized, mainly due to two synergistic chemical mechanisms: the formation of stable heavy metal–thiol coordination bonds and the crystallographic transformation of hydration products from ettringite to Friedel’s salt. This chemical S/S mechanism enhanced chemical retention factors by 9–3458 fold, demonstrating that the synergistic chemical effects of coordination bond formation and hydration products optimization far exceed traditional physical encapsulation mechanisms. These findings provide new insights into dual-mechanism design strategies for heavy metals S/S.

城市生活垃圾焚烧飞灰中重金属具有高浸出性，对环境造成严重威胁。仅使用水泥不能达到重金属的固化/稳定化（S/S），不能满足中国的监管标准。研究了不同剂量哌嗪螯合剂（TS300）和普通硅酸盐水泥（OPC525）对FA中S/S重金属的影响及其机理。动力学结果还表明，表面冲刷是主要的浸出机制。本研究通过非反应性示踪技术量化了TS300对OPC525基质物理输运特性的调控作用。尽管孔隙网络更开放，但重金属被有效地固定，主要是由于两种协同化学机制：稳定的重金属-硫醇配位键的形成和水化产物从钙矾石到弗里德尔盐的晶体学转变。这种化学S/S机制使化学保留因子提高了9-3458倍，表明配位键形成和水化产物优化的协同化学效应远远超过传统的物理包封机制。这些发现为重金属S/S双机制设计策略提供了新的见解。

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引用次数: 0

Adsorptive and fertilizing potential of waste plasterboard for sustainable phosphorus management 废石膏板对磷可持续管理的吸附和施肥潜力

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

Environmental Technology & Innovation

Pub Date : 2025-12-09 DOI: 10.1016/j.eti.2025.104697

Jae-In Lee , Chuluuntsetseg Jadamba , Youn-Jun Lee , Chang-Gu Lee , Young-Man Yoon , Soo-Cheul Yoo , Seong-Jik Park

Phosphorus (P) is vital for plant growth, yet its imbalance across ecosystems poses major environmental and agricultural challenges. Excess P in water leads to eutrophication, while soil deficiency restricts crop productivity. To address both issues, this study explored a sustainable strategy using waste plasterboard (WPB), a gypsum-based construction by-product, as a dual-purpose material. WPB was used to remove P from aqueous solutions, and the P-loaded WPB (P–WPB) was subsequently assessed as a phosphorus source for rice cultivation. Contrary to other calcium-rich adsorbents primarily composed of CaCO₃, thermal treatment of CaSO₄-based WPB resulted in a decline in P adsorption capacity. The superior adsorption performance of untreated WPB was likely associated with its rougher surface morphology, higher calcium elution, and active surface functionalities (CO and –OH groups). P adsorption was diminished under acidic conditions but notably enhanced by the presence of carbonate ions (CO₃^2-). The adsorption of P onto WPB was characterized as an endothermic, monolayer interaction. The maximum adsorption capacity of the WPB was 218.18 mg/g. Environmental safety of the WPB was confirmed through toxicity characteristic leaching procedure and Daphnia magna assays, which showed low toxicity and heavy metal levels below regulatory limits for both WPB and P–WPB. In rice growth experiments, medium and high application levels of P–WPB significantly improved plant growth, demonstrating comparable or superior performance to conventional commercial fertilizers. This study presents a sustainable and cost-effective approach for P removal and recovery using WPB, contributing to water purification, waste recycling, and sustainable P management.

磷(P)对植物生长至关重要，但其在生态系统中的不平衡构成了重大的环境和农业挑战。水中磷过量导致富营养化，而土壤缺乏则限制作物生产力。为了解决这两个问题，本研究探索了使用废石膏板（WPB）作为双重用途材料的可持续战略。废石膏板是一种石膏基建筑副产品。利用WPB去除水体中的磷，并评价了载磷WPB作为水稻种植磷源的价值。与其他主要由CaCO3组成的富钙吸附剂不同，caso4基WPB热处理后吸附P的能力下降。未经处理的WPB具有优异的吸附性能，这可能与其粗糙的表面形貌、较高的钙洗脱率和活性的表面官能团（CO和-OH基团）有关。对磷的吸附在酸性条件下减弱，但在碳酸盐离子（CO32-）的存在下显著增强。磷在WPB上的吸附表现为吸热的单层相互作用。WPB的最大吸附量为218.18 mg/g。通过毒性特征浸出过程和水蚤试验证实了WPB的环境安全性，WPB和P-WPB的毒性低，重金属含量低于法规限值。在水稻生长试验中，中、高施用量的磷- wpb显著改善了水稻的生长，表现出与常规商业肥料相当或更好的性能。本研究提出了一种可持续且具有成本效益的利用WPB去除和回收磷的方法，有助于水净化、废物循环利用和可持续磷管理。

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引用次数: 0

Foliar application of animal based-protein hydrolysates enhances growth performance, yield, and fruit quality of tomato under deficit irrigation in greenhouse 在温室亏缺灌溉条件下，叶面施动物蛋白水解物可提高番茄的生长性能、产量和果实品质

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

Environmental Technology & Innovation

Pub Date : 2025-12-09 DOI: 10.1016/j.eti.2025.104688

Yang Jiao , Xinyu Yuan , Yinhua Ji, Yifan Fu, Weixuan Wang, Haofeng Lv, Bin Liang, Weiwei Zhou

Appropriate deficit irrigation is a water-saving irrigation strategy that can improve tomato fruit quality, but excessive water deficit always leads to yield reduction. It is an urgent task to seek an appropriate strategy that can address the negative impact of deficit irrigation on tomato yields while maintaining high fruit quality. A pot experiment was conducted on drip-irrigated greenhouse tomato to explore the roles of foliar pig blood-derived protein hydrolysates (PP) on the yield, water use efficiency, and fruit quality of tomatoes under normal irrigation (70–75 % field capacity) and deficit irrigation (45–50 % field capacity). The results revealed that PP application strengthened the beneficial effects of deficit irrigation on tomato quality by increasing the levels of soluble solids, sugars, protein, carotenoids, total phenols, and anthocyanins in fruits as well as fruit color and firmness. The negative effects of deficit irrigation on tomato yield were alleviated after PP application, which increased tomato yield by 18.2 % and water use efficiency by 18.8 %, alongside improvements in chlorophyll content, carotenoid content, and photosynthetic parameters. PP also increased the ascorbic acid, glutathione, total phenolic, and flavonoid contents and thereby significantly reduced the malondialdehyde content in tomato leaves caused by deficit irrigation. Therefore, the combined management of protein hydrolysates and deficit irrigation is a winwin method to increase tomato quality and maintain yield in modern sustainable agriculture.

适当亏缺灌溉是提高番茄果实品质的节水灌溉策略，但过度亏缺往往导致产量下降。寻求一种合适的策略，既能解决亏缺灌溉对番茄产量的负面影响，又能保持高品质的果实，是一项紧迫的任务。以滴灌温室番茄为试验材料，研究了猪血源蛋白水解物（PP）在正常灌溉（70 - 75% %田量）和亏缺灌溉（45 - 50% %田量）条件下对番茄产量、水分利用效率和果实品质的影响。结果表明，PP的施用通过提高果实中可溶性固形物、糖、蛋白质、类胡萝卜素、总酚和花青素的含量以及果实的颜色和硬度，强化了亏缺灌溉对番茄品质的有益影响。施用PP后，亏缺灌溉对番茄产量的负面影响得到缓解，番茄产量提高18.2 %，水分利用效率提高18.8 %，叶绿素含量、类胡萝卜素含量和光合参数均有改善。PP还提高了抗坏血酸、谷胱甘肽、总酚和类黄酮含量，从而显著降低了亏缺灌溉引起的番茄叶片丙二醛含量。因此，蛋白质水解物与亏缺灌溉相结合管理是现代可持续农业中提高番茄品质和保持产量的双赢方法。

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引用次数: 0

Enhancing aerobic nitrate removal by amino acid supplementation: Metabolic flexibility of Pseudomonas sp. DE6 in polluted environments 氨基酸补充增强好氧硝酸盐去除：污染环境中假单胞菌DE6的代谢灵活性

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

Environmental Technology & Innovation

Pub Date : 2025-12-09 DOI: 10.1016/j.eti.2025.104696

Hao Zhang , Fujian Zhang , Yongdong Deng , Wenhui Zhang , Jing Xu , Jianjie Gao , Bo Wang , Zhenjun Li , Xiaoyan Fu , Lijuan Wang , Yu Wang , Quanhong Yao , Rihe Peng , Yongsheng Tian

A strain exhibiting high nitrate-removal efficiency under anaerobic conditions was isolated and taxonomically identified as Pseudomonas sp. DE6. Subsequent investigations revealed that supplementation with specific amino acids, including L-asparagine and glycine, substantially enhanced its nitrate-removal capacity under aerobic conditions. The results indicated that when sodium succinate was used as the carbon source at a carbon-to-nitrogen ratio of 4 (mass basis), and the culture was maintained at 30°C, pH 7.0, and 160 rpm under anaerobic tube-incubation conditions, strain DE6 removed 620 mg/L KNO₃ (equivalent to 85.87 mg/L nitrate nitrogen) within 12 h, achieving a removal rate of 1.37 mg N/(g DCW·h) and nearly complete removal of total inorganic-nitrogen within 24 h. However, under aerobic conditions, the nitrate-nitrogen removal rate was substantially lower. Complete removal was achieved only after 24 h with the addition of 0.4 g/L amino acids, yielding a nitrate-nitrogen removal rate of 0.87 mg N/(g DCW·h) and a final total inorganic-nitrogen removal efficiency of 80.94 %. RT-qPCR analysis indicated that nitrate-nitrogen removal was mainly achieved by denitrification and nitrogen assimilation. Following supplementation with amino acids, the expression levels of genes involved in the nitrate assimilation and partial denitrification pathways were significantly upregulated under aerobic conditions. This suggests that amino acid metabolism enhances both denitrification and assimilation by strain DE6 under aerobic conditions, thereby improving the removal efficiency of nitrate nitrogen. These findings highlight the potential for the flexible application of the nitrate-removal mechanism of the amino-acid-coordinated strain DE6 across diverse wastewater-treatment contexts.

分离出一株在厌氧条件下具有高硝酸盐去除效率的菌株，并经分类鉴定为假单胞菌sp. DE6。随后的研究表明，添加特定氨基酸，包括l -天冬酰胺和甘氨酸，在有氧条件下显著提高了硝酸盐去除能力。结果表明，以丁二酸钠为碳源，碳氮比为4（质量基），在30℃、pH 7.0、160 rpm的厌氧管培养条件下，菌株DE6在12 h内脱除了620 mg/L的KNO₃（相当于85.87 mg/L的硝酸氮），脱除率为1.37 mg N/(g DCW·h)，在24 h内几乎完全脱除了总无机氮。然而，在好氧条件下，硝酸盐氮的去除率明显较低。在添加0.4 g/L氨基酸的条件下，24 h即可达到完全去除，硝酸盐氮去除率为0.87 mg N/(g DCW·h)，最终总无机氮去除率为80.94 %。RT-qPCR分析表明，硝酸盐氮的去除主要通过反硝化和氮同化来实现。补充氨基酸后，在好氧条件下，参与硝酸盐同化和部分反硝化途径的基因表达水平显著上调。说明氨基酸代谢增强了DE6菌株在好氧条件下的反硝化和同化作用，从而提高了硝态氮的去除效率。这些发现突出了氨基酸协同菌株DE6在不同废水处理环境中灵活应用硝酸盐去除机制的潜力。

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引用次数: 0

Mitigating soluble phosphorus loss in legacy phosphorus soils: Biosolids characterization and phosphorus-transformation studies 减轻遗留磷土壤中可溶性磷的损失：生物固体表征和磷转化研究

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

Environmental Technology & Innovation

Pub Date : 2025-12-08 DOI: 10.1016/j.eti.2025.104685

Gurpal S. Toor, Emileigh Lucas, Fajun Sun, Quin Zabel, Taylor Roswall, Zachary Kiedrowski, Danielle Pressley

Legacy phosphorus (P) from agricultural soils continues to leak into surface waters. We investigated how biosolids treated with metals (Fe, Al, and Ca) immobilize soluble P (water-extractable P, WEP) in soils while maintaining plant-available P (Mehlich 3-P, M3-P). Two complementary incubations (3–8 weeks; 25 °C) in non-legacy and legacy-P soils (M3-P: 58–139 mg kg⁻¹; 230–953 mg kg⁻¹) tracked WEP, M3-P, and M3-P saturation ratio (M3-PSR). Poultry litter and compost produced the largest WEP and the highest M3-P time-weighted means (TWM: 0.31 and 0.21 mg kg⁻¹ per kg of P), reflecting rapid P release. Fe/Al-treated biosolids (e.g., Bloom ±WTR)) showed small or negative WEP and lower M3-P TWM that declined with increasing application rate (0.12–0.04 mg kg⁻¹ from 1x to 4x). Thermo-hydrolyzed biosolid (low Fe) had a mid-range M3-P TWM (∼0.19 mg kg⁻¹) but the largest delta (Δ) over 8 weeks, consistent with sustained mineralization. WEP_i TWM was –0.002–0.027 across products; increasing Bloom rates reduced WEP_i TWM ( 0.007 to –0.0002 mg kg⁻¹) and Δ (–0.007 to –0.0005 mg kg⁻¹), confirming Fe/Al control of P solubility. M3-PSR changes mirrored product chemistry, with ΔPSR near zero for Bloom and minimal or negative for Fe/Al-treatments. Overall, Fe/Al-treated biosolids effectively reduced soluble P, while some products (e.g., thermo-hydrolyzed, lime-stabilized+WTR) gradually increased plant-available P. We suggest prioritizing Fe/Al-treated biosolids (±WTR) on legacy-P or sandy soils to immobilize soluble P, and applying labile materials (poultry litter, compost, thermo-hydrolyzed biosolids) in split doses on P-deficient soils, guided by M3-P, texture, WEPᵢ, and pH.

农业土壤中的遗留磷(P)继续泄漏到地表水中。我们研究了用金属（铁、铝和钙）处理的生物固体如何在保持植物有效磷（Mehlich 3-P, M3-P）的同时固定土壤中的可溶性磷（水可提取磷，WEP）。在非遗赠和遗赠p土壤（M3-P: 58-139 mg kg⁻¹；230-953 mg kg⁻¹）中进行的两次互补孵育（3-8周；25°C）追踪了WEP、M3-P和M3-P饱和比（M3-PSR）。禽畜垃圾和堆肥产生最大的WEP和最高的M3-P时间加权平均值（TWM: 0.31和0.21 mg kg kg / kg P），反映了P的快速释放。Fe/ al处理的生物固体（例如Bloom±WTR）显示出较小或负的WEP和较低的M3-P TWM，随着施毒量的增加而下降（0.12-0.04 mg kg⁻¹从1倍到4倍）。热水解的生物固体（低铁）有中等范围的M3-P TWM（~ 0.19 mg kg⁻¹），但最大的Δ （Δ）超过8周，与持续矿化一致。WEPi各产品间TWM值为- 0.002 ~ 0.027；增加Bloom速率降低了WEPi TWM（0.007至-0.0002 mg kg⁻¹）和Δ（-0.007至-0.0005 mg kg⁻¹），证实了Fe/Al对P溶解度的控制。M3-PSR的变化反映了产品的化学性质，Bloom处理的ΔPSR接近于零，Fe/ al处理的ΔPSR最小或为负。总体而言，铁/铝处理的生物固体有效地降低了可溶性磷，而一些产品（如热水解、石灰稳定+WTR）逐渐增加了植物速效磷。我们建议优先在遗留磷或沙质土壤上使用铁/铝处理的生物固体（±WTR）来固定可溶性磷，并根据M3-P、质地、WEP - l和pH指导，在缺磷土壤上分剂量施用不稳定材料（家禽粪便、堆肥、热水解生物固体）。

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引用次数: 0