ACS ES&T engineering最新文献_第8页

Pilot-Scale Nitrogen Recovery from Anaerobic Digester Centrate Utilizing Ultrafiltration and Membrane Contactors 利用超滤和膜接触器中试回收厌氧消化浓缩液中的氮

IF 6.3

ACS ES&T engineering Pub Date : 2026-08-14 Epub Date: 2026-07-06 DOI: 10.1021/acsestengg.6c00057

Alexander M. Schwiebert, John A. Bush, Ryan Holloway, Leila Sermek, Bhargavi Gavi Subramanian, Ganesh Rajagopalan, Mason Manross, Marguerite Pyne, Andrew Yenne, Tayler J. Zavala, Katia Ito, Michael B. Heeley, Amanda S. Hering, Junko Munakata Marr, Johan Vanneste, Tzahi Y. Cath

{"title":"Pilot-Scale Nitrogen Recovery from Anaerobic Digester Centrate Utilizing Ultrafiltration and Membrane Contactors","authors":"Alexander M. Schwiebert, John A. Bush, Ryan Holloway, Leila Sermek, Bhargavi Gavi Subramanian, Ganesh Rajagopalan, Mason Manross, Marguerite Pyne, Andrew Yenne, Tayler J. Zavala, Katia Ito, Michael B. Heeley, Amanda S. Hering, Junko Munakata Marr, Johan Vanneste, Tzahi Y. Cath","doi":"10.1021/acsestengg.6c00057","DOIUrl":"https://doi.org/10.1021/acsestengg.6c00057","url":null,"abstract":"Anaerobic digester centrate contains high concentrationsof nitrogen,predominantly in the form of ammonium. Most wastewater treatment plantssend the centrate back to their headworks, missing the opportunityto recover valuable products and overloading their energy-intensivenitrification–denitrification processes for nitrogen removal.Membrane contactors provide a promising, lower energy demand alternativefor high-efficiency nitrogen recovery (>80%); however, previousstudieshave reported performance declines due to membrane fouling and inadequatepretreatment, limiting the practical application of this technology.In this study, we investigated ultrafiltration as a pretreatment strategyto mitigate fouling and enhance membrane contactor performance. Apilot-scale hybrid ultrafiltration–membrane contactor systemwas investigated and achieved 80% nitrogen recovery from centratewithout noticeable performance decline at a feed pH as low as 8.5.These results demonstrate that ultrafiltration effectively removesfoulants and improves nitrogen recovery efficiency, suggesting thatmembrane contactor systems with appropriate pretreatment representa viable and energy-efficient approach for nitrogen recovery in wastewatertreatment plants.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 8","pages":"2061–2071"},"PeriodicalIF":6.3,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148729419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine-Learning-Enabled Interpretation of PFAS Adsorption Mechanisms Using the Freundlich Coefficient (KF) as the Target Response 使用Freundlich系数（KF）作为目标响应的PFAS吸附机制的机器学习解释

IF 6.3

ACS ES&T engineering Pub Date : 2026-08-14 Epub Date: 2026-06-25 DOI: 10.1021/acsestengg.6c00099

Saurabh Singh, Manoj Kumar Tiwari

{"title":"Machine-Learning-Enabled Interpretation of PFAS Adsorption Mechanisms Using the Freundlich Coefficient (KF) as the Target Response","authors":"Saurabh Singh, Manoj Kumar Tiwari","doi":"10.1021/acsestengg.6c00099","DOIUrl":"https://doi.org/10.1021/acsestengg.6c00099","url":null,"abstract":"Per-and polyfluoroalkyl substances (PFAS) show strongly compound-and condition-dependent adsorption, creating uncertainty in activated-carbontreatment design, particularly for short-chain PFAS with weak andvariable affinity. Here, an interpretable machine learning frameworkis developed to predict the Freundlich adsorption coefficient (KF) as a screening-level indicator of adsorptionaffinity within a harmonized PFAS–adsorbent–conditiondata set. A literature database of 256 extracted records was curatedinto 238 harmonized PFAS–adsorbent–condition entries(IF = 0–85.60). Data were split into 70% training,15% validation, and 15% testing, with 3-fold cross-validation (k = 3) used for hyperparameter optimization. Seven models(SVR, RF, GB, XGBoost, ANN, and KNN) were evaluated using R2, RMSE, and MAE. Performance increased fromconventional to advanced models: XGBoost was the best traditionalbaseline (R2test = 0.77). Amongthe evaluated models, KNN showed the highest predictive performance(KNN: R2test = 0.89). SHAPinterpretation identified influential descriptor domains consistentwith known adsorption behavior, with pH, adsorbent identity, and temperatureas key operational controls and molecular descriptors governing size/dispersioneffects. Chain-length heatmaps of log10(KF) revealed distinct adsorption regimes and data set gaps,supporting predictive infilling for missing PFAS–adsorbentcombinations. These combined approaches help investigate and controlPFAS in the environment by supporting source tracking while accuratelypredicting KF and key drivers for fasterscreening and improved treatment design.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 8","pages":"2100–2118"},"PeriodicalIF":6.3,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148729553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mixed Functional Group Ligands in UiO-66(Ce): A Strategy for Efficient Photocatalytic Nitrate to Ammonia Conversion UiO-66（Ce）中混合官能团配体：一种高效光催化硝酸盐转化为氨的策略

IF 6.3

ACS ES&T engineering Pub Date : 2026-08-14 Epub Date: 2026-07-28 DOI: 10.1021/acsestengg.6c00134

Mariyappan Shanmugam, Lekshmi Priya SL, Vincy SAP Masillamani, Prince JJ Sagayaraj, Naina Goyal, Keishi Oyama, Naoko Okibe, Bernaurdshaw Neppolian, Sanjay Mathur, Hyoung-il Kim, Karthikeyan Sekar

{"title":"Mixed Functional Group Ligands in UiO-66(Ce): A Strategy for Efficient Photocatalytic Nitrate to Ammonia Conversion","authors":"Mariyappan Shanmugam, Lekshmi Priya SL, Vincy SAP Masillamani, Prince JJ Sagayaraj, Naina Goyal, Keishi Oyama, Naoko Okibe, Bernaurdshaw Neppolian, Sanjay Mathur, Hyoung-il Kim, Karthikeyan Sekar","doi":"10.1021/acsestengg.6c00134","DOIUrl":"https://doi.org/10.1021/acsestengg.6c00134","url":null,"abstract":"Ammonia (NH3) is a key chemical feedstockused in agriculturalfertilizers, energy applications, and many industrial processes. However,conventional production methods like the Haber–Bosch processare energy-intensive, costly, and environmentally harmful. Photocatalyticnitrate reduction offers a sustainable, low-energy alternative forNH3 synthesis. In this study, we developed Ce-UiO-66 metal–organicframeworks (MOFs) with mixed functional groups for efficient photocatalyticnitrate reduction. We synthesized and evaluated a series of (Ce)-Xcatalysts, where X = H, NH2, OH, H–NH2, NH2–OH, H–OH, and H–NH2–OH. Among them, Ce–NH2–OH (NO) showedthe highest ammonia production rate at 212 μmol g–1 h–1. This enhanced performance results from synergisticeffects: the amine group improves visible-light absorption by narrowingthe bandgap, while the hydroxy group creates shallow electron trapsthat reduce charge recombination and improve charge transfer. Thehydroxy group also increases the proportion of Ce3+ sites,which serve as active centers for the nitrate reduction reaction.This work presents a catalyst design strategy that combines structuraland electronic engineering ammonia production, advancing sustainableclean energy technologies.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 8","pages":"2133–2140"},"PeriodicalIF":6.3,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148729738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ferrous Tartrate Dihydrate Shell on Microscale Zerovalent Iron Enables Sustained Fe(II) Activation for Enhanced Cr(VI) Removal 微尺度零价铁上的二水合酒石酸亚铁壳使Fe（II）持续活化以增强Cr（VI）的去除

IF 6.3

ACS ES&T engineering Pub Date : 2026-08-14 Epub Date: 2026-03-19 DOI: 10.1021/acsestengg.6c00086

Yuqing Wang, Zhenyu Kang, Hangyu Li, Hongtao Sheng, Yi Shen, Zhen Ni, Xiaoqi Long, Qi Zhu, Mengfang Chen, Linbo Qian

{"title":"Ferrous Tartrate Dihydrate Shell on Microscale Zerovalent Iron Enables Sustained Fe(II) Activation for Enhanced Cr(VI) Removal","authors":"Yuqing Wang, Zhenyu Kang, Hangyu Li, Hongtao Sheng, Yi Shen, Zhen Ni, Xiaoqi Long, Qi Zhu, Mengfang Chen, Linbo Qian","doi":"10.1021/acsestengg.6c00086","DOIUrl":"https://doi.org/10.1021/acsestengg.6c00086","url":null,"abstract":"The surface iron oxide layer formed on microscale zerovalentiron(mZVI) hinders its electron transfer efficiency, thereby significantlydecreasing its reduction performance. In this study, an innovativeapproach was developed through the application of a wet ball-millingtechnique, followed by surface engineering, to synthesize tartaricacid (TA)-modified mZVI. A mZVI sample modified with 1.2 mol/L TAdemonstrated exceptional Cr(VI) removal performance, achieving a capacityof 79.41 mg/g, which is 9.39 times higher than that of pristine mZVI.Spectroscopic and thermogravimetric analyses confirmed, for the firsttime, the hydrogen bond-mediated formation of a ferrous tartrate dihydrate(C4H4FeO6·2H2O) layeron the mZVI surface. Density functional theory calculations furtherconfirmed the formation of a stable five-membered chelate ring structurewithin this surface complex. The content of C4H4FeO6·2H2O in the mZVI-1.2 TA materialwas determined to be 16.85%. This surface-bound C4H4FeO6·2H2O complex enhances boththe selectivity and electron transfer toward Cr(VI). Furthermore,the TA-modified mZVI facilitates sustained Fe(III)/Fe(II) redox cycling,thereby enabling the continuous regeneration of Fe(II). This studypresents a novel and practical strategy for effective mZVI surfaceengineering, offering significant potential for groundwater remediation.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 8","pages":"2086–2099"},"PeriodicalIF":6.3,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148729809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-Functional Photocatalyst-Embedded Hydrovoltaic Nanogenerator for Coupled Electricity Generation and Water Purification 双功能光催化剂-嵌入式水力发电纳米发电机耦合发电和水净化

IF 6.3

ACS ES&T engineering Pub Date : 2026-07-10 Epub Date: 2026-06-23 DOI: 10.1021/acsestengg.6c00228

Minho Choi, Minwoo Lee, Myoung Won Chung, Jimin Yoon, Peng Zhang, Wonyong Choi, Ji-Soo Jang, Seunghyun Weon

{"title":"Dual-Functional Photocatalyst-Embedded Hydrovoltaic Nanogenerator for Coupled Electricity Generation and Water Purification","authors":"Minho Choi, Minwoo Lee, Myoung Won Chung, Jimin Yoon, Peng Zhang, Wonyong Choi, Ji-Soo Jang, Seunghyun Weon","doi":"10.1021/acsestengg.6c00228","DOIUrl":"10.1021/acsestengg.6c00228","url":null,"abstract":"Hydrovoltaic nanogenerators (HGs), which generate electricitybasedon the capillary flow of water, have been proposed as a niche solutionfor the Water–Energy Nexus. However, potential deactivationdue to the complexation of water impurities has not been considered.Herein, we propose a photocatalyst-embedded hydrovoltaic nanogenerator(PHG) capable of simultaneously generating electricity and removingwater pollutants. By introducing a hydrophilic photocatalyst layer,the PHG enhances short circuit current (ISC) compared to conventional hydrovoltaic nanogenerators. Moreover,photoinduced electron generation contributes to 153% increase in poweroutput, while the formation of hydroxyl radicals facilitates the degradationof recalcitrant organic pollutants such as acetaminophen, phenol,4-chlorophenol, benzoic acid, sulfamethoxazole, and carbamazepine.This dual functionality not only prevents the accumulation of contaminantsbut also preserves the physical and chemical device integrity. Thedevice maintains stable performance under various pH and polluted-waterconditions and demonstrates scalability through series and parallelconfigurations. By integrating photocatalytic degradation with hydrovoltaicenergy harvesting, this study presents a novel and sustainable strategyfor recovering electricity directly from contaminated water sources.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 7","pages":"1982–1993"},"PeriodicalIF":6.3,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148633999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spectral Reconstruction in the Background Subspace for COD Quantification under Multidimensional Interference 多维干扰下COD量化的背景子空间谱重建

IF 6.3

ACS ES&T engineering Pub Date : 2026-07-10 Epub Date: 2026-06-29 DOI: 10.1021/acsestengg.6c00203

Naiquan Zhu, Chenming Su, Yuchao Fu

{"title":"Spectral Reconstruction in the Background Subspace for COD Quantification under Multidimensional Interference","authors":"Naiquan Zhu, Chenming Su, Yuchao Fu","doi":"10.1021/acsestengg.6c00203","DOIUrl":"10.1021/acsestengg.6c00203","url":null,"abstract":"Over the past several decades, absorption spectroscopyhas beenwidely used to detect aquatic constituents. Chemical oxygen demand(COD) is an important indicator of water quality, reflecting the extentof organic pollution. However, under natural water conditions, multidimensionalinterference including air bubbles, turbidity, and fluid motion introducenonabsorptive spectral artifacts, causing nonlinear spectra distortionsand reducing the accuracy of COD prediction. In this study, we systematicallyinvestigated the effects of bubbles, turbidity, and flow conditionson spectral morphology and intensity distribution. And we proposea background subspace–based spectral reconstruction methodusing Principal Component Analysis (PCA). We first construct a low-dimensionalspectral subspace from COD-free samples to characterize the backgroundof the water matrix. Spectra containing COD are then projected ontothis subspace, and COD-related absorption features are extracted fromthe residuals between the original and reconstructed spectra. As aresult, absorbance spectra containing only COD-related informationare achieved without requiring explicit quantification of bubblesor flow velocity. Our method effectively eliminates spectral artifactsand improves spectral consistency and signal-to-noise ratio. Unlikeprevious studies focusing on turbidity alone, this approach accountsfor multiple interferences, including bubbles and flow, enabling reliablein situ optical monitoring in aquatic environments and regulatorycontexts.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 7","pages":"1972–1981"},"PeriodicalIF":6.3,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148650988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photocatalytic Degradation and Defluorination of GenX in Lake Water: Elucidating the Enhanced Role of Natural Organic Matter 湖泊水体中GenX的光催化降解和除氟：阐明天然有机物的增强作用

IF 6.3

ACS ES&T engineering Pub Date : 2026-07-10 Epub Date: 2026-06-26 DOI: 10.1021/acsestengg.6c00328

Yinghao Wen, Gregory S. Day, Hengyu Lin, Ray Osman K. Ozdemir, Emily E. Claveau, Narasimhan Loganathan, Angela K. Wilson, Virender K. Sharma, Xingmao Ma, Hong-Cai Zhou

{"title":"Photocatalytic Degradation and Defluorination of GenX in Lake Water: Elucidating the Enhanced Role of Natural Organic Matter","authors":"Yinghao Wen, Gregory S. Day, Hengyu Lin, Ray Osman K. Ozdemir, Emily E. Claveau, Narasimhan Loganathan, Angela K. Wilson, Virender K. Sharma, Xingmao Ma, Hong-Cai Zhou","doi":"10.1021/acsestengg.6c00328","DOIUrl":"https://doi.org/10.1021/acsestengg.6c00328","url":null,"abstract":"The widespread water contamination of hexafluoropropyleneoxidedimer acid (HFPO–DA, GenX), a replacement for perfluorooctanoicacid (PFOA), necessitates the development of effective destructivetreatment technologies. This study investigates the photocatalyticdegradation of GenX in environmentally relevant water matrices usinga titanium-based metal–organic framework (MOF), MIL-125-NH2. Contrary to commonly reported inhibitory effects of naturalorganic matter (NOM) in photocatalytic treatment processes, naturallake water significantly enhanced GenX degradation and defluorinationcompared to ultrapure water. To elucidate the promotional effect oflake water, NOM and representative model compounds of its redox-activemoieties (glucose, phenol, and p-benzoquinone) wereintroduced for systematic investigation. The observed differencesin GenX degradation behaviors suggest that electron-donating NOM moietiescan enhance degradation and defluorination efficiency by suppressingelectron–hole recombination and increasing the availabilityof photogenerated electrons for GenX breakdown. The degradation productsof GenX were identified, and plausible degradation pathways were alsoevidenced by density functional theory (DFT) calculations. In addition,neutral pH conditions enable both effective GenX degradation and MOFstructural stability. Overall, this study provides mechanistic insightinto how redox-active NOM moieties influence PFAS degradation in heterogeneousphotocatalytic systems under environmentally relevant conditions.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 7","pages":"2015–2026"},"PeriodicalIF":6.3,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148624607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Key Considerations in Developing Photothermal Membrane Distillation 发展光热膜蒸馏的关键问题

IF 6.3

ACS ES&T engineering Pub Date : 2026-07-10 Epub Date: 2026-06-13 DOI: 10.1021/acsestengg.6c00124

Deoukchen Ghim, Honghyun Kim, Xuanhao Wu, Sisi Cao, Ping-I Chou, Srikanth Singamaneni, Young-Shin Jun

{"title":"Key Considerations in Developing Photothermal Membrane Distillation","authors":"Deoukchen Ghim, Honghyun Kim, Xuanhao Wu, Sisi Cao, Ping-I Chou, Srikanth Singamaneni, Young-Shin Jun","doi":"10.1021/acsestengg.6c00124","DOIUrl":"10.1021/acsestengg.6c00124","url":null,"abstract":"Interfacial photothermal membrane distillation (PMD)has emergedas a promising solar-driven desalination technology, yet its performancevaries widely because of inconsistent testing conditions, incompleteheat-transfer accounting, and limited understanding of key designparameters. This perspective consolidates fundamental considerationsessential for reliably evaluating and advancing PMD systems. Here,we clarify the distinctions among PMD, solar steam generation, andinterfacial solar stills and emphasize solar-to-water efficiency asthe appropriate performance metric. Using a one-dimensional mass andheat transfer model, this perspective article highlights how airgapthickness, membrane porosity and pore size, feedwater residence time,and salinity jointly control vapor flux and thermal efficiency. Itfurther discusses practical challenges in PMD development, includingaccurate surface-temperature measurement, membrane robustness underlong-term operation, and fouling behaviors unique to interfacial heating.We also address the complementary role of data-driven approaches inPMD design and performance evaluation. Based on insights from theoreticalmodeling and reported experimental systems, we suggest strategiesfor optimizing module design, enhancing latent-heat recovery, andimproving the durability of photothermal membranes. By establishingnew unified guidelines for performance evaluation and identifyingkey scientific and engineering opportunities, this perspective aimsto accelerate the development of efficient, scalable, and sustainablePMD systems for solar desalination.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 7","pages":"1928–1940"},"PeriodicalIF":6.3,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148666467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Complexation-Assisted Synthesis of Hierarchical Fe-ZSM-5 Nanospheres with Stabilized Framework Fe2+ for Enhanced Fenton-like Degradation of Chlorobenzene 络合辅助合成框架稳定的Fe-ZSM-5纳米微球增强fenton类氯苯降解

IF 6.3

ACS ES&T engineering Pub Date : 2026-07-10 Epub Date: 2026-06-30 DOI: 10.1021/acsestengg.6c00323

Zhenyu Gu, Jianhai Lu, Huimin Xu, Yemin Zhao, Shan Gao, Qiguang Dai, Xiaole Weng, Zhongbiao Wu

{"title":"Complexation-Assisted Synthesis of Hierarchical Fe-ZSM-5 Nanospheres with Stabilized Framework Fe2+ for Enhanced Fenton-like Degradation of Chlorobenzene","authors":"Zhenyu Gu, Jianhai Lu, Huimin Xu, Yemin Zhao, Shan Gao, Qiguang Dai, Xiaole Weng, Zhongbiao Wu","doi":"10.1021/acsestengg.6c00323","DOIUrl":"10.1021/acsestengg.6c00323","url":null,"abstract":"A novel Fe-doped ZSM-5 nanosphere catalyst was synthesizedviaa complex-assisted dynamic two-stage hydrothermal method using Na2EDTA as a chelating agent, followed by calcination under aninert atmosphere. The resulting material (Fe-ZSM-5EDTA-Ar) featureda hierarchical spherical architecture assembled from nanorods, possessinga high surface area (up to 511 m2/g), hierarchical porosity,and uniform dispersion of Fe species within the zeolite framework.Structural and spectroscopic analyses confirmed the successful isomorphoussubstitution of Fe2+/Fe3+ with a high proportioninto the framework of ZSM-5, which concurrently enhanced structuralstability and effectively suppressed iron leaching. Fe-ZSM-5EDTA-Ardemonstrated exceptional efficacy in the heterogeneous Fenton degradationof chlorobenzene (CB) employing H2O2 as theoxidant. This catalyst uniquely integrated high adsorption affinitywith outstanding catalytic activity, resulting in complete dechlorinationelimination of the target pollutant under optimized reaction conditions.Quenching experiments and electron paramagnetic resonance (EPR) collectivelydemonstrated that hydroxyl radicals were the dominant reactive oxygenspecies, driving the degradation process. Furthermore, Fe-ZSM-5EDTA-Aralso exhibited excellent recyclability in multiple cycles with negligibleactivity and iron loss. This work provides a robust synthesis strategyfor designing stable and efficient zeolite-based Fenton catalystsfor the remediation of chlorinated organic wastewater.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 7","pages":"2004–2014"},"PeriodicalIF":6.3,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148624903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stimulation of Acidimicrobium sp. Strain A6 Biodegradation of PFOS in AFFF-Impacted Sediment Columns Using PAA-Coated Goethite 用paa包覆针铁矿刺激酸性微生物sp.菌株A6降解afff影响下沉积物柱中的全氟辛烷磺酸。

IF 6.3

ACS ES&T engineering Pub Date : 2026-07-10 Epub Date: 2026-06-30 DOI: 10.1021/acsestengg.6c00272

Matthew W. Sima, Shan Huang, Peter R. Jaffé

{"title":"Stimulation of Acidimicrobium sp. Strain A6 Biodegradation of PFOS in AFFF-Impacted Sediment Columns Using PAA-Coated Goethite","authors":"Matthew W. Sima, Shan Huang, Peter R. Jaffé","doi":"10.1021/acsestengg.6c00272","DOIUrl":"10.1021/acsestengg.6c00272","url":null,"abstract":"PFAS biodegradationat aqueous film-forming foam (AFFF)-impactedsites may be achieved by leveraging the native biogeochemical propertiesof the soil. Previous studies have shown that Acidimicrobium sp. strain A6 (A6), an ammonium-oxidizing iron reducer capable ofFeammox, can be biostimulated to degrade PFOA and PFOS in sedimentslurries under controlled laboratory incubations. However, implementingthis biostimulation in the field requires distributing Fe(III) throughoutthe sediment. To do so, we lowered the zeta potential of goethiteby coating it with polyacrylic acid (PAA) and conducted column experimentsunder different iron levels across three experimental setups: AFFF-contaminatedsediments, 12C8–PFOS-spiked AFFF-contaminatedsediments, and 13C8–PFOS-spiked AFFF-contaminatedsediments. Results show that PAA-coated goethite treatment decreasedPFOS mobilization and enhanced A6 activity, as demonstrated by increasedFeammox activity and increased A6 counts. This biostimulation promotedPFOS degradation, as evidenced by the production of F– and shorter carbon-chain intermediates. Greater stimulation wasobserved in soils with high initial Fe(III) content, indicating theimportance of initial soil geochemical conditions for A6 activity.This stimulation of A6 in natural soils via the addition of PAA-coatedgoethite is highly promising for environmental remediation of PFAS-contaminatedsediments and warrants further optimization and testing under field-relevantconditions.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 7","pages":"1994–2003"},"PeriodicalIF":6.3,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148443628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0