IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-10-20 Epub Date: 2026-10-07 DOI: 10.1021/acs.est.6c07128

Xavier Tanguay, Ben Amor

{"title":"Natural Hazard Risks in LCA for the Built Environment: Managing Stochastic Inputs in Stochastic Process-Based LCA","authors":"Xavier Tanguay, Ben Amor","doi":"10.1021/acs.est.6c07128","DOIUrl":"10.1021/acs.est.6c07128","url":null,"abstract":"Natural hazards affect the environmental sustainabilityof thebuilt environment because of the environmental losses caused, suchas the environmental impacts of the repairs and the indirect effectsof downtime. Asset performance assessment workflows allow for probabilisticallyconnecting frequent and infrequent hazards with building response,damages, and environmental losses. Environmental life cycle assessmentis emerging as the preferred methodology to derive environmental losses,but current tools struggle with interoperability issues, promptingsimplifications in converting the material damages to environmentallosses and limiting environmental uncertainty propagation. This studyproposes a novel coupling framework that leverages a dual presamplingstrategy paired with a preaggregation step on background environmentaldatasets, expediting in minutes the computation of thousands of stochasticenvironmental life cycle assessment results. The coupling frameworkis demonstrated with two scales of asset performance assessment workflows:one for individual buildings and one for portfolios of buildings,both exposed to a hurricane hazard. The case studies underline keyloss drivers originating from different steps in the workflow, includingthe conversion from damages to environmental losses. The couplingframework provides groundwork for identifying natural hazard effectson the sustainability of the built environment, a key step in formulatingsustainable adaptation strategies to a changing climate.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 41","pages":"29379–29391"},"PeriodicalIF":12.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149151441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Ionic–Covalent Bond-Mediated Electron-Rich Lattice Oxygen for Solar-Driven Acetic Acid Abatement 离子共价键介导的富电子点阵氧用于太阳能驱动的醋酸减排

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-10-20 Epub Date: 2026-09-07 DOI: 10.1021/acs.est.6c07573

Tongzhou Xu, Zhixin Hu, Bosheng Chen, Ang Gao, Zhenguo Wang, Biluan Zhang, Lei Miao, Jinlong Wang, Yanbing Guo

{"title":"Ionic–Covalent Bond-Mediated Electron-Rich Lattice Oxygen for Solar-Driven Acetic Acid Abatement","authors":"Tongzhou Xu, Zhixin Hu, Bosheng Chen, Ang Gao, Zhenguo Wang, Biluan Zhang, Lei Miao, Jinlong Wang, Yanbing Guo","doi":"10.1021/acs.est.6c07573","DOIUrl":"https://doi.org/10.1021/acs.est.6c07573","url":null,"abstract":"Domestic waste generates volatile fatty acids (VFAs)and emitsstrong malodors that reduce environmental comfort. The generationof these odor-causing molecules usually occurs in relatively high-humidityconditions, which speed up the deterioration of adsorbents, creatingsecondary waste from frequent replacement. Herein, we report a lithium-dopedmanganese dioxide (Li–MnO2) photothermal systemthat sustainably degrades acetic acid (CH3COOH, a key VFA).Mechanistic studies reveal the ionic bond in Li–O localizeselectrons at the oxygen atom, while the covalent bond in Mn–Oestablishes an efficient electron transport channel. This electron-richoxygen can cleave the O–H bond in H2O with an ultra-lowenergy barrier of 0.01 eV, generating dihydroxy groups, which subsequentlyinitiate a nucleophilic attack on the O–H and C–H bondsin CH3COOH molecules. The introduction of light not onlyefficiently converts the material surface into thermal energy, butit also triggers electron rearrangement. The engineered Li–MnO2 catalyst demonstrates complete CH3COOH degradationat 291 mW cm–2. A modular photothermal purificationdevice demonstrates above 1000 h odor removal efficiency in municipalwaste scenario. We anticipate this work will enable perpetual CH3COOH removal from domestic waste without external energy input,offering a sustainable solution for odor control in waste management.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 41","pages":"29640–29650"},"PeriodicalIF":12.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Dual Oxidation in the Amino Acid-Mediated Copper-Catalyzed Fenton-like System: Effects of Ligand Structure and pH-Dependent Speciation 氨基酸介导的铜催化类芬顿体系的双重氧化：配体结构和ph依赖性物种形成的影响

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-10-20 DOI: 10.1021/acs.est.6c10258

Erwin Jongwoo Park,Soosan Park,Hye Kyung Nam,Junghun Lee,Jiyoon Cho,Hyunsoo Yoon,Min Sik Kim,Changha Lee

{"title":"Dual Oxidation in the Amino Acid-Mediated Copper-Catalyzed Fenton-like System: Effects of Ligand Structure and pH-Dependent Speciation","authors":"Erwin Jongwoo Park,Soosan Park,Hye Kyung Nam,Junghun Lee,Jiyoon Cho,Hyunsoo Yoon,Min Sik Kim,Changha Lee","doi":"10.1021/acs.est.6c10258","DOIUrl":"https://doi.org/10.1021/acs.est.6c10258","url":null,"abstract":"The Cu(II)/H2O2 system has attracted increasing interest as a Cu-catalyzed advanced oxidation process and serves as a useful biomimetic model for investigating Cu-mediated biomolecule redox interactions. In this system, reactive oxidants can operate in a dual-oxidation mode, where the oxidant flux partitions between coordinated ligands and coexisting bulk-phase substrates. In this study, we systematically investigated this behavior over a wide pH range (3–12), using 17 structurally diverse amino acids (AAs) as model ligands and benzoic acid (BA), which exhibits negligible Cu(II) complexation, as a model bulk-phase substrate. Speciation-based kinetic analysis identified the bis-chelated complex, [Cu(AA)2], as a key catalytic species associated with effective dual oxidation, namely, balanced oxidant allocation between ligand-centered AA oxidation and bulk-phase BA oxidation, at pH 7–10. Using quantitative structure–activity/efficiency relationships, we demonstrate that the partitioning of oxidant flux is governed by two ligand-associated properties: (i) Cu(II)-binding strength, which promotes ligand-centered oxidation, and (ii) oxidative stability (proxied by the highest occupied molecular orbital (HOMO)–lowest unoccupied molecular orbital (LUMO) gap), which favors the oxidant flux to the bulk phase. At higher pH, the possible formation of mixed hydroxo species, [Cu(AA)2(OH)]−, was associated with a shift toward ligand-centered oxidation and attenuated bulk-phase BA oxidation. Integrated machine-learning models combining ligand descriptors with pH-dependent speciation indicators further supported these trends and predicted AA and BA oxidation kinetics across pH 7–11. These results provide a predictive framework for understanding how ligand structure and pH-dependent speciation jointly control oxidant allocation in the Cu(II)/H2O2 system.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"108 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Behavior-Based Thresholds Support Screening-Level Prioritization of Caffeine as a Neuroactive Wastewater Micropollutant in Coastal Waters 基于行为的阈值支持咖啡因作为沿海水域神经活性废水微污染物的筛选水平优先级

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-10-20 Epub Date: 2026-10-07 DOI: 10.1021/acs.est.6c10032

Zhen Lu, Zhi Yan, Bin Liu, Jiao Wang, Yaxi Li, Ke Li

{"title":"Behavior-Based Thresholds Support Screening-Level Prioritization of Caffeine as a Neuroactive Wastewater Micropollutant in Coastal Waters","authors":"Zhen Lu, Zhi Yan, Bin Liu, Jiao Wang, Yaxi Li, Ke Li","doi":"10.1021/acs.est.6c10032","DOIUrl":"10.1021/acs.est.6c10032","url":null,"abstract":"Sensitive functional end points revealearly responses to neuroactivewastewater contaminants but are rarely translated into screening thresholds.Using caffeine as a sentinel, we evaluated a behavior-based frameworkfor coastal waters. Systematic searches of Web of Science Core Collection,PubMed, and Embase through 24 August 2026 identified 66 eligible studiesand 2181 effect sizes for meta-analysis. The near-zero grand pooledsigned ln RR may reflect cancellation amongend points with opposing response directions. Responses varied bylife stage, exposure duration, concentration, and end point category.Standardized light–dark assays across eight aquatic speciesrevealed taxon- and context-dependent behavioral disruptions, includingresponses at low concentration and non-monotonic patterns. Speciessensitivity distributions based on behavioral benchmark concentrationsyielded a conservative hazardous concentration affecting 5% of species(HC5; 0.0585 μg L–1) and a screening-levelbehavior-based predicted no-effect concentration (PNEC; 0.0195 μgL–1). A separate systematic literature search, supplementedwith NORMAN EMPODAT records, compiled 1421 quantifiable caffeine measurementsin coastal and estuarine waters. Concentrations were right-skewed(median, 44.9 ng L–1; IQR, 14.60–190.00 ngL–1), and 69.88% of measurements fell into the high-priorityrisk quotient category (RQ ≥ 1). These findings support behavior-basedthresholds for prioritizing neuroactive wastewater pollution in coastalwaters.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 41","pages":"29342–29354"},"PeriodicalIF":12.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Inhalation of Environmentally Simulated PET Nanoplastics Induces Demyelinating Disorders via the CXCL12/CXCR4 Axis 环境模拟PET纳米塑料吸入通过CXCL12/CXCR4轴诱导脱髓鞘疾病

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-10-20 Epub Date: 2026-10-05 DOI: 10.1021/acs.est.6c03987

Shuang Liu, Jingcun Dong, Yu Hu, Qingqing Zhu, Huiyang Fu, Jia Gao, Xueyu Weng, Ligang Hu, Chunyang Liao, Guibin Jiang

{"title":"Inhalation of Environmentally Simulated PET Nanoplastics Induces Demyelinating Disorders via the CXCL12/CXCR4 Axis","authors":"Shuang Liu, Jingcun Dong, Yu Hu, Qingqing Zhu, Huiyang Fu, Jia Gao, Xueyu Weng, Ligang Hu, Chunyang Liao, Guibin Jiang","doi":"10.1021/acs.est.6c03987","DOIUrl":"10.1021/acs.est.6c03987","url":null,"abstract":"Thehealth threat from airborne nanoplastics (NPs) remains unclear,as despite inhalation being a more direct brain entry route thaningestion, current understanding relies on oral exposure and commercialparticle models that obscure realistic risks. Here, by integratingenvironmentally simulated polyethylene terephthalate (PET)-NPs withan aerosol inhalation model that mirrors real-world human exposure(0.1, 1, and 10 mg/m3), we demonstrate that chronic NPinhalation translocated to the brain and induced demyelination, neuroinflammation,and cognitive deficits. The most pronounced effects were observedat the highest exposure dose (10 mg/m3), which is relevantto the occupational settings. Mechanistically, NP exposure triggeredastrocytic CXCL12 release, leading to CXCR4-dependent microglial activationand cytokine network dysregulation. In vitro, blockadeof CXCR4 with AMD3100 attenuated NP-induced microglial migration andoligodendrocytic myelin basic protein reduction. Our study thus definitivelylinks realistic airborne NP exposure to the key neuropathologicalfeatures of demyelinating disorders and pinpoints a modifiable molecularpathway that could inform exposure-based preventive strategies. Thesefindings underscore the need for further assessment of airborne NPrisks, particularly in occupational settings.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 41","pages":"29285–29298"},"PeriodicalIF":12.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Neglecting Changes in Salinity and Tidal Range Overstates Projected Increases in Greenhouse Gas Emissions from Mangrove Sediments 忽略盐度和潮差的变化高估了红树林沉积物温室气体排放的预计增加

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-10-20 Epub Date: 2026-10-07 DOI: 10.1021/acs.est.6c13469

Siyi Zheng, Chuancheng Fu, Tao Bao, Yajing Lin, Ji Liu, Junji Yuan, Leilei Xiao, Xiangjin Shen, Yi Liu, Lifei Su, Shihua Li, Yuanbin Cai, Pingping Guo, Jiafang Huang, Min Luo

{"title":"Neglecting Changes in Salinity and Tidal Range Overstates Projected Increases in Greenhouse Gas Emissions from Mangrove Sediments","authors":"Siyi Zheng, Chuancheng Fu, Tao Bao, Yajing Lin, Ji Liu, Junji Yuan, Leilei Xiao, Xiangjin Shen, Yi Liu, Lifei Su, Shihua Li, Yuanbin Cai, Pingping Guo, Jiafang Huang, Min Luo","doi":"10.1021/acs.est.6c13469","DOIUrl":"10.1021/acs.est.6c13469","url":null,"abstract":"Mangroves are important coastal blue carbon ecosystems,but futuresediment GHG emissions remain uncertain because global projectionshave largely emphasized atmospheric climate drivers, with less attentionto coastal hydrology, particularly sea-surface salinity and tidalrange. Here, we compiled 810 sediment GHG flux measurements from 294mangrove sites worldwide and used machine learning to project emissionsto 2050, distinguishing climate-driven changes from the additionaleffects of projected shifts in sea-surface salinity and tidal range.We estimate a mangrove sediment GHG budget of ∼194 Tg CO2e yr–1 across reliably predicted mangroveareas worldwide around 2020. By 2050 under SSP5–8.5, projectedchanges in salinity and tidal range counteracted 41% of the climate-drivenincrease in emissions globally, with comparable offset effects amongCO2, CH4, and N2O. Hydrological offseteffects were strongest at 10–20° latitude in both hemispheresand weakened toward the equator and higher latitudes. Regionally,hydrological offset effects were greatest in East Africa, whereasthe Indo-Pacific showed the largest absolute hydrology-driven reductionsin emission budgets, largely owing to its extensive mangrove area.These findings highlight the importance of incorporating sea-surfacesalinity and tidal range into future projections of mangrove sedimentGHG emissions under global change.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 41","pages":"29412–29424"},"PeriodicalIF":12.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149151404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Warming Patterns Shape Divergent Multilevel Physiological Responses and Underlying Metabolic Mechanisms in Aquatic Organisms 变暖模式在水生生物中形成不同的多层次生理反应和潜在的代谢机制

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-10-20 DOI: 10.1021/acs.est.6c08655

Yaru Dai,Yuexian Zhong,Pu Xia,Jing Guo,Xiaowei Zhang,Wei Shi

{"title":"Warming Patterns Shape Divergent Multilevel Physiological Responses and Underlying Metabolic Mechanisms in Aquatic Organisms","authors":"Yaru Dai,Yuexian Zhong,Pu Xia,Jing Guo,Xiaowei Zhang,Wei Shi","doi":"10.1021/acs.est.6c08655","DOIUrl":"https://doi.org/10.1021/acs.est.6c08655","url":null,"abstract":"Although the impacts of global warming on aquatic ecosystems are widely recognized, the biological consequences of distinct warming patterns remain largely unknown. We investigated physiological and metabolic responses of Daphnia magna, Chironomus kiiensis, and zebrafish under constant warming (+1, +3 °C), heatwave, and temperature fluctuation. Dynamic patterns exhibited stronger physiological responses, with mean absolute effect sizes across survival, growth, development, behavior, and stress functional categories following the order heatwave > fluctuation > +3 °C > +1 °C. Response profiles varied among warming patterns: constant +3 °C induced moderate and broad changes across biochemical stress, developmental, and behavioral end points; heatwave accelerated zebrafish hatching and C. kiiensis pupation while increasing deformity, suppressing growth, and elevating mortality; and fluctuation induced pronounced biochemical stress responses, particularly HSP70, together with developmental disruption, while producing weaker survival and growth effects than heatwave. Across taxa, dominant response profiles differed, with broad multiend point disruption in D. magna, stress-dominant responses in C. kiiensis, and developmental sensitivity in zebrafish. Metabolomic analysis further identified warming-pattern-specific metabolic signatures associated with energy metabolism under +3 °C, membrane-related processes under heatwave, and redox-related processes under fluctuation. Together, these findings provide a scientific basis for improving aquatic ecological risk assessment under increasingly variable warming scenarios.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"5 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Breaking the Rigid-Locking Effect: Unlocking Efficient Fenton-Like Reactions for Water Decontamination 打破刚性锁定效应：解锁有效的芬顿样水净化反应

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-10-20 Epub Date: 2026-10-06 DOI: 10.1021/acs.est.6c10801

Changhui Zhou, Yichen Gong, Jinhua Li, Guanjun Qu, Ruiqing Zhao, Zhiyuan Su, Zhinan Dai, Yaobin Wang, Chaoyue Xie, Shiyun Zhu, Jing Bai, Mingce Long, Baoxue Zhou

{"title":"Breaking the Rigid-Locking Effect: Unlocking Efficient Fenton-Like Reactions for Water Decontamination","authors":"Changhui Zhou, Yichen Gong, Jinhua Li, Guanjun Qu, Ruiqing Zhao, Zhiyuan Su, Zhinan Dai, Yaobin Wang, Chaoyue Xie, Shiyun Zhu, Jing Bai, Mingce Long, Baoxue Zhou","doi":"10.1021/acs.est.6c10801","DOIUrl":"10.1021/acs.est.6c10801","url":null,"abstract":"Overcoming the kinetic bottleneck of Fe(II) regenerationhas alwaysbeen a top priority for enhancing Fenton/Fenton-like processes todegrade emerging contaminants (ECs). In conventional iron-based catalysts(e.g., Fe2O3, FeOOH), the iron center is tightlylocked inside a rigid cage of hexa-oxygen coordination ([FeO6] unit) that is resistant to geometric distortion and electron transfer.This phenomenon, termed “Rigid Locking Effect”, hindersthe Fe(III)-to-Fe(II) conversion. To break this, we propose a ligand-engineeringstrategy by partially replacing oxygen coordination with chlorine,featuring a unique [O-FeCl4–O] motif in laminatedreduced graphene oxide (rGO) nanochannels. DFT calculations and FeXAS spectra reveal that the active [O-FeCl4–O] unitexhibits “Rigid” breaking, including low reorganizationenergy, strong electron delocalization, and enhanced spin–orbitcoupling (SOC). This tailored motif significantly promotes Fe(II)/Fe(III)cycling, resulting in a turnover frequency per iron site (TOFFe) of 43.66 h–1, which is a 1091-fold enhancementcompared to that of the conventional [FeO6] motif in Fe2O3. This enhancement leads to a 30.7-fold increasein HO• yield, enabling efficient removal of diverse ECs incomplex water matrices and during long-term continuous operation.This study establishes a proof-of-concept paradigm for designing efficientheterogeneous catalysts and advances practical Fenton-based waterdecontamination.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 41","pages":"29665–29675"},"PeriodicalIF":12.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Elucidating pH-Dependent Silica Removal Mechanisms in Aluminum-Based Coagulation 铝基混凝中ph依赖性二氧化硅去除机理的研究

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-10-20 Epub Date: 2026-10-07 DOI: 10.1021/acs.est.6c12764

Tyler A. Malkoske, Sergi Garcia-Segura, Tiezheng Tong

{"title":"Elucidating pH-Dependent Silica Removal Mechanisms in Aluminum-Based Coagulation","authors":"Tyler A. Malkoske, Sergi Garcia-Segura, Tiezheng Tong","doi":"10.1021/acs.est.6c12764","DOIUrl":"10.1021/acs.est.6c12764","url":null,"abstract":"Silica scaling is a major limiting factor to the treatmentandvalorization of saline brines as alternative water sources. Whilecoagulation provides competitive silica removal capacity comparedto ion exchange and adsorption, the incomplete knowledge of silicaremoval mechanisms hinders efforts to improve process efficiency.In this study, we employed experimental investigations and materialscharacterization to advance the molecular-level understanding of silicaremoval during electrocoagulation (EC) and chemical coagulation (CC).EC provided greater silica removal compared to CC for all coagulanttypes considered. For both EC and CC, silica removal capacity increased2- to 5-fold with rising pH. Characterization of precipitates showedthat the pH-dependent increase in silica removal capacity was drivenby Al−O−Si bond formation and silicic acid polymerization.A novel titration method revealed that at pH ≤ 8.0, silicabinding occurred via η−OH2+ activatedsites on aluminum precipitate, whereas at pH 10.0, binding resultedfrom reactions among partially deprotonated η−OH sites,bound silica, and silanol groups. Silica removal mechanisms were validatedusing synthetic brackish groundwater, where synergistic interactionsbetween aluminum and Ca2+/Mg2+ substantiallyincreased silica removal. This work provides a mechanistic basis forthe rational operation of aluminum-based coagulation to enhance silicaremoval from saline brines.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 41","pages":"29676–29688"},"PeriodicalIF":12.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Phage Lysis Associated with Biodegradable Microplastics Mediates Microbial Physiological Adaptation to Transform Organic Matter in Soil 与可生物降解微塑料相关的噬菌体裂解介导微生物转化土壤有机质的生理适应

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-10-20 Epub Date: 2026-10-07 DOI: 10.1021/acs.est.6c06022

Lin Liu, Long Hu, He Sun, Jiamin Xiao, Dong Zhu, Xiaomeng Wei, Gehong Wei, Chun Chen

{"title":"Phage Lysis Associated with Biodegradable Microplastics Mediates Microbial Physiological Adaptation to Transform Organic Matter in Soil","authors":"Lin Liu, Long Hu, He Sun, Jiamin Xiao, Dong Zhu, Xiaomeng Wei, Gehong Wei, Chun Chen","doi":"10.1021/acs.est.6c06022","DOIUrl":"10.1021/acs.est.6c06022","url":null,"abstract":"Biodegradable microplastics (MPs) profoundly impact thestorageand stability of soil organic matter (SOM), yet the mechanisms bywhich phages mediate the transformation of plant- and microbiallyderived SOM under biodegradable MP perturbation remain poorly understood.This study integrated multiomics, stable isotope techniques, and phageinoculation experiments to investigate how phages mediate SOM transformationfollowing biodegradable MP addition in agricultural soil. The resultsrevealed that lytic phage-bacteria interactions were central to MP-dependentSOM transformation. Polylactic acid (PLA) reduced plant-derived organicmolecules by 15% without affecting microbially derived carbon. PLAincreased phage lysis and enriched auxiliary metabolic genes (AMGs)such as queC (2.2-fold increase), which supportsphage replication and reduces microbial biomass. Pure culture experimentssupported that PLA increased phage lytic infectivity. Phage inoculationfurther revealed that lytic phages accelerated bacteria to shift towardcatabolism (e.g., lignocellulose degradation, citrate cycle) in PLA-amendedsoil, reducing carbon use efficiency (CUE) and accelerating decompositionof plant- and microbially derived carbon through viral shunt. In comparison,polyhydroxyalkanoates (PHA) increased microbially derived moleculesby 37%, particularly amino nitrogen compounds. The higher degradabilityof PHA stimulated lytic phage bloom with their hosts and enrichedbiosynthesis-related AMGs (e.g., cysH, glmS). Phage inoculation experiments showed that surviving bacteria assimilatedphage lysate products into anabolism (e.g., amino acid and amino sugarbiosynthesis), enriching metabolites such as l-isoleucineand MurNAc after PHA addition. This increased CUE and accumulationof microbial organics through viral shuttle. These findings uncoverphage-mediated mechanisms linking microplastic perturbation to soilcarbon cycling.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 41","pages":"29425–29440"},"PeriodicalIF":12.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149151439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

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