ACS ES&T engineering最新文献

{"title":"Porous Iron Electrodes Reduce Energy Consumption During Electrocoagulation of a Virus Surrogate: Insights into Performance Enhancements Using Three-Dimensional Neutron Computed Tomography.","authors":"Kyungho Kim, Cesar Castillo, Gyoung G Jang, Yuxuan Zhang, Costas Tsouris, Shankararaman Chellam","doi":"10.1021/acsestengg.4c00317","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00317","url":null,"abstract":"<p><p>Electrocoagulation has attracted significant attention as an alternative to conventional chemical coagulation because it is capable of removing a wide range of contaminants and has several potential advantages. In contrast to most electrocoagulation research that has been performed with nonporous electrodes, in this study, we demonstrate energy-efficient iron electrocoagulation using porous electrodes. In batch operation, investigation of the external pore structures through optical microscopy suggested that a low porosity electrode with sparse connection between pores may lead to mechanical failure of the pore network during electrolysis, whereas a high porosity electrode is vulnerable to pore clogging. Electrodes with intermediate porosity, instead, only suffered a moderate surface deposition, leading to electrical energy savings of 21% and 36% in terms of electrocoagulant delivery and unit log virus reduction, respectively. Neutron computed tomography revealed the critical role of electrode porosity in utilizing the electrode's internal surface for electrodissolution and effective delivery of electrocoagulant to the bulk. Energy savings of up to 88% in short-term operation were obtained with porous electrodes in a continuous flow-through system. Further investigation on the impact of current density and porosity in long-term operation is desired as well as the capital cost of porous electrodes.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"4 10","pages":"2573-2584"},"PeriodicalIF":7.4,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11474953/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142455524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated Recovery of Iron and Nickel from Olivine Ores Using Solvent Extraction: Synergistic Production of Amorphous Silica and Carbonates through pH Adjustment and Carbon Mineralization","authors":"Ning Zhang, Ruoxi Yang, Haonan Danny Huang, Jenny Meng, Wencai Zhang, Ah-Hyung Alissa Park, Aaron Moment","doi":"10.1021/acsestengg.4c00462","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00462","url":null,"abstract":"This study proposed a sustainable method for the concurrent recovery of metals from olivine minerals and carbon sequestration through carbon mineralization to address the challenges of climate change and critical mineral recovery for the renewable energy transition. It developed a comprehensive development in leaching processes, recovery of metals, and reagent recycling while assessing its economic benefits and environmental impact. Employing hydrometallurgical leaching, our approach facilitates the selective recovery of Ni²⁺ while converting Mg²⁺ into their carbonates. This approach is further refined through a stepwise technique that controls operating conditions to generate high-purity valuable products, enabling nearly 90% of Mg²⁺ and Ni²⁺ to be dissolved and converted to carbonates. This study evaluated various organic and inorganic acids for the leaching process, followed by Fe extraction and pH swing, to yield pure Fe salts and amorphous silica. Separately extracting iron from the solution significantly reduces the loss of valuable metals in subsequent stages by minimizing the coprecipitation of iron with silicon. A techno-economic assessment (TEA) was performed to evaluate the economic impact of removing iron before the solvent extraction of nickel. This analysis, based on mass balance flow comparisons, determined that the independent removal of iron is more profitable, resulting in the production of more and higher-value products. Ni²⁺ was selectively extracted from the leachate using Versatic 10, which forms a complex with nickel in the organic phase. The solution containing either a strong acid or a greener agent (i.e., gaseous CO₂) was effectively used to strip Ni²⁺ from the organic phase. Different polymorphs of Mg carbonates were produced under ambient conditions. The proposed process flow results in high-purity products suitable for use in various industries, which enhances the economy, facilitating the rapid adoption of this technology.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"16 1","pages":""},"PeriodicalIF":7.1,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255992","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}

{"title":"Reductive Degradation of Florfenicol by Electrogenerated Hydrated Electrons via the Electron Tunneling Effect","authors":"Lu Wang, Guoshuai Liu, Qifang Lu, Hua Zou, Shijie You","doi":"10.1021/acsestengg.4c00326","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00326","url":null,"abstract":"Degradation of fluorinated organic pollutants remains a challenge due to the strong electronegativity of fluorine and the high structural stability of C–F bonds. Advanced reduction processes (ARPs) based on strong reducibility of hydrated electrons (e_aq^–) are effective for destroying recalcitrant fluorinated organic pollutants. Ultraviolet (UV) photolysis is a frequently used method for producing e_aq^–, but it is limited by the need for chemical addition and light-shielding effects. This study reported the generation of e_aq^– via electron tunneling based on the n⁺Si/Al₂O₃ cathode with a metal–insulator-semiconductor (MIS) structure for the rapid reductive degradation of a halogenated emerging pollutant (florfenicol, FLO). The results demonstrate that the n⁺Si/Al₂O₃ cathode achieved 97.5% degradation (30 min), accounting for 92.3% defluorination and 97.0% dechlorination (120 min). The electrogenerated e_aq^– was responsible for the degradation and dehalogenation of FLO, as indicated by electron spin resonance (ESR) measurements, scavenger experiments, and electrochemiluminescence (ECL) tests. The theoretical calculations revealed the occurrence of electron tunneling on the thin Al₂O₃ film at the n⁺Si/Al₂O₃ cathode, where the tunneling electron jumped to the water to form e_aq^–. The ARPs based on electrogenerated e_aq^– also demonstrated efficient degradation of chloramphenicol (CAP), hydroxychloroquine (HCQ), and levofloxacin (LVF). This study not only provides a simple approach to e_aq^– generation via the electron tunneling effect but also suggests a possible strategy for developing ARPs to remove halogenated emerging organic pollutants in water.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"4 1","pages":""},"PeriodicalIF":7.1,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256045","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}

{"title":"Continuous N2O Capture and Reduction to N2 Using Ca-Zeolite Adsorbent and Pd/La/Al2O3 Reduction Catalyst","authors":"Yuan Jing, Chenxi He, Li Wan, Jiahuan Tong, Jialei Zhang, Shinya Mine, Ningqiang Zhang, Yuuta Kageyama, Hironori Inomata, Ken-ichi Shimizu, Takashi Toyao","doi":"10.1021/acsestengg.4c00560","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00560","url":null,"abstract":"There is an urgent need to develop effective methods for converting nitrous oxide (N₂O) into nonharmful N₂ because N₂O is a potent greenhouse gas, and its increasing concentration in the atmosphere is a major concern for global warming. In this study, we developed a two-step N₂O capture and reduction system, employing CaO-incorporated zeolites (Ca-zeolites) as N₂O adsorbents and Pd nanoparticles on La-containing Al₂O₃ (Pd/La/Al₂O₃) as catalysts for N₂O reduction. This process is suitable for continuous operation over a temperature swing of 50–150 °C. The N₂O capture capacity and subsequent reduction ability were preserved for at least 15 h (10 cycles). Notably, this system can operate at low temperatures (below 150 °C) using a simple temperature-swing process in the presence of O₂.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"202 1","pages":""},"PeriodicalIF":7.1,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256043","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}

{"title":"Iron Enhancing Superoxide-Mediated Mn(II) Oxidation by Peroxymonosulfate: Elucidating the Role of Superoxide Radicals","authors":"Lap-Cuong Hua, Chia-Yu Weng, Yi-Hsueh Brad Chuang, Maria Kennedy, Chihpin Huang","doi":"10.1021/acsestengg.4c00333","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00333","url":null,"abstract":"The effective removal of soluble Fe(II) and Mn(II) is problematic in water supply utilities. This study explored the oxidation behavior, kinetics, and reaction mechanisms of using peroxymonosulfate (PMS) to mediate the co-oxidation of Fe(II) and Mn(II) in natural water. At [Fe(II)] and [Mn(II)] of 1 mg/L, PMS oxidized all Fe(II) spontaneously within 15 s, irrespective of the oxidant concentration (50–500 μM) and solution pH (6–9), while it required 7–30 min for complete Mn(II) oxidation, indicating its distinctive behavior in reacting with Fe(II) and Mn(II). Scavenging assays and electron paramagnetic resonance (EPR) analysis revealed the dominant presence of O₂^•– in the system. EPR analysis combined with chemical probing experiments using nitroblue tetrazolium chloride suggested that O₂^•– was produced exclusively via surface reactions of ferric oxide with PMS. PMS co-oxidation eventually yielded amorphous hydrous manganese-bearing ferric co-oxides (hMnFeO_<i>x</i>), with increasing Mn:Fe compositional ratios over time and pH, i.e., Mn_0.31Fe_0.69, Mn_0.67Fe_0.33, Mn_0.93Fe_0.07 at pH 7 and Mn_0.68Fe_0.32, Mn_0.89Fe_0.11, Mn_0.90Fe_0.10 at pH 9. The co-occurrence of Fe(II) provided hydrous FeO_<i>x</i> surfaces enriched with chemisorbed oxygen (∼60%), acting as nucleation sites for the heterogeneous MnO_<i>x</i> oxidation through enhanced electron transfer and surface complexation pathways. This co-occurrence thus reduced the half-life time of PMS-induced Mn(II) oxidation, by 5.3–18.7 times compared to the Mn(II) oxidation alone. This study provides fresh evidence, underscoring the significance of O₂^•– in PMS-mediated metal oxidation systems.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"8 1","pages":""},"PeriodicalIF":7.1,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255993","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}

{"title":"Graph Neural Network Integrating Self-Supervised Pretraining for Precise and Interpretable Prediction of Micropollutant Treatability by HO•-Based Advanced Oxidation Processes","authors":"Jingyi Zhu, Yuanxi Huang, Lingjun Bu, Yangtao Wu, Shiqing Zhou","doi":"10.1021/acsestengg.4c00389","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00389","url":null,"abstract":"Machine learning (ML) has become a crucial tool to accelerate research in advanced oxidation processes via predicting reaction parameters to evaluate the treatability of micropollutants (MPs). However, insufficient data sets and an incomplete prediction mechanism remain obstacles toward the precise prediction of MP treatability by a hydroxyl radical (HO^•), especially when <i>k</i> values approach the diffusion-controlled limit. Herein, we propose a novel graph neural network (GNN) model integrating self-supervised pretraining on a large unlabeled data set (∼10 million) to predict the <i>k</i>_HO values on MPs. Our model outperforms the common-seen and literature-established ML models on both whole data sets and diffusion-controlled limit data sets. Benefiting from the pretraining process, we demonstrate that <i>k</i>-value-related chemistry wisdom contained in the pretrained data set is fully exploited, and the learned knowledge can be transferred among data sets. In comparison with molecular fingerprints, we identify that molecular graphs (MGs) cover more structural information beyond substituents, facilitating a <i>k</i>-value prediction near the diffusion-controlled limit. In particular, we observe that mechanistic pathways of HO^•-initiated reactions could be automatically classified and mapped out on the penultimate layer of our model. The phenomenon shows that the GNN model can be trained to excavate mechanistic knowledge by analyzing the kinetic parameters. These findings not only well interpret the robust model performance but also extrapolate the <i>k</i>-value prediction model to mechanistic elucidation, leading to better decision making in water treatment.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"18 1","pages":""},"PeriodicalIF":7.1,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256046","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}

{"title":"Volatile Fatty Acid Production through Arresting Methanogenesis by Electro-Synthesized Hydrogen Peroxide in Anaerobic Digestion and Subsequent Recovery by Electrodialysis","authors":"Jiasi Sun, Xi Zhang, Jianjun Guan, Zhen He","doi":"10.1021/acsestengg.4c00384","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00384","url":null,"abstract":"Producing volatile fatty acids (VFAs) in anaerobic digestion (AD) is of strong interest because of VFAs’ potential values in biomanufacturing. Despite some success of VFA production via pretreatment, in situ inhibition of methanogens for VFA accumulation has yet to be explored. Herein, a system consisting of hydrogen peroxide (H₂O₂) production, application of H₂O₂ for inhibiting methanogens in AD, and VFA separation was investigated. A polytetrafluoroethylene-based electrospinning electrode was synthesized and capable of generating ∼4.2 g L^–1 H₂O₂. When the generated H₂O₂ was applied to the AD, methanogens were inhibited, and VFA accumulation occurred. With the addition of 80 mg L^–1 H₂O₂, an average VFA concentration of 10.6 g COD L^–1 was obtained. The long-term H₂O₂ inhibition effect on methanogenesis was examined for nearly 100 days. A 2.3- to 3.3-fold increase in malondialdehyde levels, which indicated increased cell damage, along with a significant decrease in methane production and an increase in VFA concentration, might suggest that H₂O₂ could potentially inhibit methanogens while allowing acidogenic bacteria to remain functional. The accumulated VFAs were separated and then recovered using an electrodialysis unit, with a maximum VFA concentration of 26.7 g COD L^–1. The results of this study will encourage further exploration of the proposed system for VFA production by addressing several challenges, including a better understanding of the inhibition mechanism and a further increase in VFA yields.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"18 1","pages":""},"PeriodicalIF":7.1,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256102","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}

{"title":"Unlocking the Potential of Ni/Fe2O3 Bimetallic Nanoparticles for Fermentative Biohydrogen Production","authors":"Puranjan Mishra, Ifunanya R. Akaniro, Ruilong Zhang, Peixin Wang, Yiqi Geng, Dongyi Li, Qiuxiang Xu, Jonathan W. C. Wong, Jun Zhao","doi":"10.1021/acsestengg.4c00269","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00269","url":null,"abstract":"The coordinated system of inorganic nanoparticle-intact living cells has shown great potential in fermentative hydrogen (H₂) production. Meanwhile, sluggish electron transfer and energy loss during transmembrane diffusion restrict the production of biohydrogen (BioH₂). Herein, iron oxide, nickel oxide, and Ni/Fe₂O₃ bimetallic nanocomposites were prepared through the coprecipitation method to investigate their potential effect on the dark fermentative hydrogen production (DFHP) system. The results showed that BioH₂ production could be enhanced by using nickel and iron oxide composites in DFHP, surpassing the performance of individual iron oxide or nickel oxide and their physical mixture. Specifically, Ni/Fe₂O₃-5% added to the feed at 150 mg/L increased the BioH₂ yields by 51.24% compared to that in its controlled experiment. The microbial community analysis confirmed a significant change in compositional proportions of the microbiome structure of DFHP in response to Ni/Fe₂O₃-5 wt %. The Enterobacter species proportions increased from 32.0% to 39.0%, along with some unclassified genera of microbial communities, from 34.0% to 42.0%, by supplementation of the nanomaterials. Enterobacter species are versatile facultative hydrogen producers and can use various organic wastes as the sole carbon source. The results suggested that the supplemented Ni/Fe₂O₃-5% induced the glycolytic efficacy and Fe and Ni availability, thereby increasing the hydrogenase activities. This study provided novel insights into integrating Ni/Fe₂O₃ into the DFHP system and depicted its potential as an excellent catalyst to increase BioH₂ production. The distinctive microbial communities, unidentified hydrogen-producing bacteria, and increased BioH₂ yield due to the presence of Ni/Fe₂O₃ in the DFHP system suggest unique and substantial advantages for the sustainable use of bimetallic nanomaterials in fermentation technology.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"40 1","pages":""},"PeriodicalIF":7.1,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256044","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}

{"title":"Enhancing Sulfate Reduction Efficiency in Microbial Electrolysis Cells: The Impact of Mixing Conditions and Heavy-Metal Concentrations on Functional Genes, Cell Activity, and Community Structure in Sulfate-Laden Wastewater Treatment","authors":"Weimin Cheng, Ke Shi, Duc-Viet Nguyen, Jianliang Xue, Qing Jiang, Di Wu, Yanlu Qiao, An Liu","doi":"10.1021/acsestengg.4c00421","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00421","url":null,"abstract":"Microbial electrolysis cells (MECs) are promising for the treatment of sulfate-laden wastewater. The performance of the MEC cathode biofilms is influenced not only by the wastewater quality but also by the hydrodynamic mixing condition. Yet, the combined effects of these combined conditions have seldom been explored. This study examines the effectiveness and operational patterns of MECs in treating sulfate-laden wastewater under varying heavy-metal (Cu²⁺ as representative) concentrations (0–80 mg L^–1) and different hydrodynamic conditions (complete-mixing (CM) and nonmixing (NM, as control)). Results showed that CM-MECs achieved higher sulfate reduction efficiency (51 to 76%) compared to NM-MECs (with 46–69% of sulfate reduction) across the range of Cu²⁺ concentrations. Kinetic analysis revealed that CM-MECs reduced sulfate faster due to increased expression of genes involved in sulfate reduction and electron transport. Furthermore, CM-MECs maintained intact cell structures, enhanced electron transfer, and increased the relative abundance of <i>Desulfobulbus</i> when treating wastewater with low Cu²⁺ concentrations (&lt;40 mg L^–1). Microbial defense mechanisms against Cu²⁺ also contributed to the enhanced sulfate reduction efficiency in the CM-MECs. These findings offer new insights into the design MECs with flowing conditions and pave the way for their future application in the treatment of heavy metal and sulfate-laden wastewater.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"12 1","pages":""},"PeriodicalIF":7.1,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255865","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}

{"title":"Oxygen Functionalization of Carbon Nanotubes Shifted the Formation Pathway of Hydroxyl Radicals in Catalytic Ozonation: The Overlooked Role of Hydrogen Peroxide","authors":"Yanye Tian, Yingtong Li, Guang-Guo Ying, Deli Wu, Kaimin Shih, Yong Feng","doi":"10.1021/acsestengg.4c00403","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00403","url":null,"abstract":"The oxygen functionalization of multiwalled carbon nanotubes (CNTs) could enhance their reactivity in catalytic ozonation for hydroxyl radical (^•OH) formation. However, the detailed pathway for the transformation of ozone to ^•OH and the mechanism for the decreased treatment performance at acidic pH values remain unclear. In this study, surface oxygen-functionalized CNTs (O-CNTs) were prepared and used in catalytic ozonation to reveal the pathway for ^•OH formation. The efficiencies of ozone utilization and its conversion to ^•OH were increased by 2.7 and 554.8 times, respectively, under the catalysis of the O-CNTs. The great reactivity of the O-CNTs was related to their high surface oxygen contents and increased dispersion. Hydrogen peroxide was generated as a significant intermediate during the catalytic ozonation of the O-CNTs. The exposure of this substance linearly correlated with ^•OH exposure and pollutant degradation constants, with correlation coefficients of 0.991 and 0.911, respectively. The formation of hydrogen peroxide was relatively slower at acidic pH values, which explains the low performance of catalytic ozonation. A mechanism was proposed that involved the generation of hydrogen peroxide to trigger the peroxone process for free ^•OH formation. These findings deepen our understanding of oxygen functionalization and offer insights into the catalytic ozonation of surface oxygen-rich carbonaceous materials.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"31 1","pages":""},"PeriodicalIF":7.1,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256048","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}