ACS ES&T water最新文献

Continuous Atomic Hydrogen for Eminent Bromate Reduction via Palladium Coordination Manipulation

IF 4.8

ACS ES&T water Pub Date : 2025-03-06 DOI: 10.1021/acsestwater.4c0112910.1021/acsestwater.4c01129

Aodi Li, Fengbo Yu, Chao Jia, Liming Sun, Jie Gao, Jibiao Zhang* and Xiangdong Zhu*,

{"title":"Continuous Atomic Hydrogen for Eminent Bromate Reduction via Palladium Coordination Manipulation","authors":"Aodi Li, Fengbo Yu, Chao Jia, Liming Sun, Jie Gao, Jibiao Zhang* and Xiangdong Zhu*, ","doi":"10.1021/acsestwater.4c0112910.1021/acsestwater.4c01129","DOIUrl":"https://doi.org/10.1021/acsestwater.4c01129https://doi.org/10.1021/acsestwater.4c01129","url":null,"abstract":"Palladium (Pd) hydrogenation reduction is a promising technique to remove bromate (BrO3–), an emerging contaminant frequently detected in an aqueous environment. However, continuous atomic hydrogen (H*) production remains a challenge because of weak Pd–support interactions and subsequent inactivation. In this study, the N-doped graphene-coordinated Pd could achieve an almost 100% BrO3– conversion rate during the continuous treatment of groundwater containing environmentally contaminated concentrations. The reduction performance experiments showed that N-doped graphene-coordinated Pd supported a higher turnover frequency value (12.4 min–1) than most of the reported Pd-based catalysts. Thin sheets with defects and uniform N doping in graphene were able to induce the formation of Pd nanoparticles (Pd NPs) and Pd single atoms (Pd–N4), respectively. In addition, doping N in graphene enables the catalyst to exhibit a higher catalytic activity. Quenching experiments and electron paramagnetic resonance tests further confirmed that the N-doped graphene-coordinated Pd had a high activity to produce more H* for BrO3– reduction. Therefore, the customized Pd coordination supported a highly effective continuous hydrogenation reduction of BrO3– in real groundwater treatment, making it a promising candidate for large-scale environmental applications.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 3","pages":"1399–1405 1399–1405"},"PeriodicalIF":4.8,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609136","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

Biodegradation of Xenoestrogens by the Green Tide Forming Seaweed Ulva: A Model System for Bioremediation.

IF 4.8

ACS ES&T water Pub Date : 2025-03-05 eCollection Date: 2025-03-14 DOI: 10.1021/acsestwater.4c00961

Justus B Hardegen, Maximilian S F Knips, Johanna K Däumer, Svenja Kretzer, Thomas Wichard

{"title":"Biodegradation of Xenoestrogens by the Green Tide Forming Seaweed Ulva: A Model System for Bioremediation.","authors":"Justus B Hardegen, Maximilian S F Knips, Johanna K Däumer, Svenja Kretzer, Thomas Wichard","doi":"10.1021/acsestwater.4c00961","DOIUrl":"10.1021/acsestwater.4c00961","url":null,"abstract":"Anthropogenic xenoestrogens pose serious threats to humans and the environment. Ulva (Chlorophyta), a green macroalga that can propagate in environments of various salinities, is a potential candidate for efficient wastewater treatment and bioremediation. In this study, we tested the class of bisphenols and ethinylestradiol and investigated the underlying removal mechanisms of these xenoestrogens. The model organism Ulva mutabilis demonstrated over 99% removal efficiency for bisphenols A, B, E, F, P, and Z, and partial removal of bisphenol S. Ulva showed complete removal capabilities even under axenic conditions, while its associated bacteria were not involved. Complete removal of 6.6 mg L-1 of bisphenol A was achieved within 2 days and a half-time of 1.85 h. Biodegradation was the leading cause of removal, whereas bioaccumulation was minimal. The model substance bisphenol A underwent various reactions, and 20 transformation products were detected using stable isotope labeling. While most of the bisphenol A was completely biodegraded, the primary transformation products were monobromobisphenol A, bisphenol A bisulfate, and 4-hydroxypropanylphenol. This study highlights the potential of the green seaweed Ulva to provide a pathway for more effective and sustainable bioremediation strategies to tackle the environmental pollution caused by xenoestrogens.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 3","pages":"1195-1206"},"PeriodicalIF":4.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11915382/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143665476","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}

引用次数: 0

Method and System for Soil and Groundwater In Situ Redox Potential (Eh) Logging

IF 4.8

ACS ES&T water Pub Date : 2025-03-05 DOI: 10.1021/acsestwater.4c0020010.1021/acsestwater.4c00200

Ivan Y. Vela*, Palle Ejlskov Jensen, Lars Nebel and Peter Høgstad Kelstrup,

{"title":"Method and System for Soil and Groundwater In Situ Redox Potential (Eh) Logging","authors":"Ivan Y. Vela*, Palle Ejlskov Jensen, Lars Nebel and Peter Høgstad Kelstrup, ","doi":"10.1021/acsestwater.4c0020010.1021/acsestwater.4c00200","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00200https://doi.org/10.1021/acsestwater.4c00200","url":null,"abstract":"Soil and groundwater redox dictate the microbiological processes governing the subsurface, which are of utmost importance for agriculture, soil remediation, and groundwater protection. Despite its relevance, there is no scientific consensus on whether it can be measured. We propose a method and system for in situ continuous logging of redox potential (Eh) with depth by measuring the voltage difference between a reference electrode at the surface and a Pt electrode embedded in a probe that can penetrate the soil down to 50 m using a direct push (DP) drilling rig. Results from 27 unconsolidated geological settings in Denmark reveal redox zonation with depth, indicating which chemical reactions can be expected in oxidized, transition, and reduced sections, with a suggested redox interface. We found all interfaces below the groundwater table (GWT). 51% of the variation in the redox interface is explained by variables other than distance to the GWT. The size of the transition section might indicate a combination of GWT fluctuations and the size of the capillary fringe. We reviewed the ISO standard for soil Eh measurement. Knowing the depth of the redox interface is important for understanding and managing subsurface environmental processes.Redox potential (Eh) is measured with depth in soil and groundwater to identify where significant changes in electron activity occur and, thus, which chemical reactions can be expected.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 3","pages":"1075–1085 1075–1085"},"PeriodicalIF":4.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestwater.4c00200","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609105","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}

引用次数: 0

Biodegradation of Xenoestrogens by the Green Tide Forming Seaweed Ulva: A Model System for Bioremediation

IF 4.8

ACS ES&T water Pub Date : 2025-03-05 DOI: 10.1021/acsestwater.4c0096110.1021/acsestwater.4c00961

Justus B. Hardegen, Maximilian S. F. Knips, Johanna K. Däumer, Svenja Kretzer and Thomas Wichard*,

{"title":"Biodegradation of Xenoestrogens by the Green Tide Forming Seaweed Ulva: A Model System for Bioremediation","authors":"Justus B. Hardegen, Maximilian S. F. Knips, Johanna K. Däumer, Svenja Kretzer and Thomas Wichard*, ","doi":"10.1021/acsestwater.4c0096110.1021/acsestwater.4c00961","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00961https://doi.org/10.1021/acsestwater.4c00961","url":null,"abstract":"Anthropogenic xenoestrogens pose serious threats to humans and the environment. Ulva (Chlorophyta), a green macroalga that can propagate in environments of various salinities, is a potential candidate for efficient wastewater treatment and bioremediation. In this study, we tested the class of bisphenols and ethinylestradiol and investigated the underlying removal mechanisms of these xenoestrogens. The model organism Ulva mutabilis demonstrated over 99% removal efficiency for bisphenols A, B, E, F, P, and Z, and partial removal of bisphenol S. Ulva showed complete removal capabilities even under axenic conditions, while its associated bacteria were not involved. Complete removal of 6.6 mg L–1 of bisphenol A was achieved within 2 days and a half-time of 1.85 h. Biodegradation was the leading cause of removal, whereas bioaccumulation was minimal. The model substance bisphenol A underwent various reactions, and 20 transformation products were detected using stable isotope labeling. While most of the bisphenol A was completely biodegraded, the primary transformation products were monobromobisphenol A, bisphenol A bisulfate, and 4-hydroxypropanylphenol. This study highlights the potential of the green seaweed Ulva to provide a pathway for more effective and sustainable bioremediation strategies to tackle the environmental pollution caused by xenoestrogens.We provide strong evidence for the viability of green seaweed as a bioremediation tool. Algae, particularly Ulva, have a significant potential to mitigate the effects of xenoestrogens, such as bisphenols, in contaminated water systems.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 3","pages":"1195–1206 1195–1206"},"PeriodicalIF":4.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestwater.4c00961","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609102","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}

引用次数: 0

Mercury Decontamination of Dental Clinic Wastewater Using Electrochemical Alloy Formation

IF 4.8

ACS ES&T water Pub Date : 2025-03-04 DOI: 10.1021/acsestwater.4c0125510.1021/acsestwater.4c01255

Vera Roth, Henric Ernbrink and Björn Wickman*,

{"title":"Mercury Decontamination of Dental Clinic Wastewater Using Electrochemical Alloy Formation","authors":"Vera Roth, Henric Ernbrink and Björn Wickman*, ","doi":"10.1021/acsestwater.4c0125510.1021/acsestwater.4c01255","DOIUrl":"https://doi.org/10.1021/acsestwater.4c01255https://doi.org/10.1021/acsestwater.4c01255","url":null,"abstract":"This study explores electrochemical alloy formation for mercury removal from dental clinic wastewater. Laboratory-scale experiments using wastewater from a Swedish dental clinic found a total mercury concentration of 0.68 mg/L, with 0.45 mg/L in dissolved or small particulate (<0.45 μm) form and the remainder as larger particulate mercury. Particulate mercury refers to mercury bound to solid-phase materials, including fine particles and fragments of dental amalgam. Electrochemical removal successfully captured 87% of mercury within 150 h by reducing dissolved Hg2+ ions at a platinum cathode, forming a stable Pt–Hg alloy. To investigate the effectiveness of this technique in practical applications, a flow reactor system based on the same electrochemical alloy removal method was installed in four dental clinics across Sweden. The reactors were installed downstream of the existing amalgam separators. While amounts vary, the reactors consistently achieved substantial mercury removal, with an estimated 340 mg to 7.5 g of mercury captured from the wastewater during 1 year of operation at each site. In total, approximately 19 g of mercury was removed, and 125,000 L of wastewater was treated. Thus, this electrochemical method effectively removes mercury not caught by amalgam separators, preventing environmental contamination.Efficient mercury removal from dental wastewater using electrochemical alloy formation in lab and flow reactor in real dental clinics during 1 year of operation.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 3","pages":"1492–1498 1492–1498"},"PeriodicalIF":4.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestwater.4c01255","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609029","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}

引用次数: 0

Portable and Cost-Effective Detection of Perfluorooctanesulfonate in Water Using a Screen-Printed Electrode Modified with Molecularly Imprinted Polymer

IF 4.8

ACS ES&T water Pub Date : 2025-03-04 DOI: 10.1021/acsestwater.4c0104410.1021/acsestwater.4c01044

Shangqing Wang, Lulu Ma, Xiaonan Feng, Kun Zhang, Zheqian Chen, Min Hu, Guomao Zheng, Yan Zheng and Bintian Zhang*,

{"title":"Portable and Cost-Effective Detection of Perfluorooctanesulfonate in Water Using a Screen-Printed Electrode Modified with Molecularly Imprinted Polymer","authors":"Shangqing Wang, Lulu Ma, Xiaonan Feng, Kun Zhang, Zheqian Chen, Min Hu, Guomao Zheng, Yan Zheng and Bintian Zhang*, ","doi":"10.1021/acsestwater.4c0104410.1021/acsestwater.4c01044","DOIUrl":"https://doi.org/10.1021/acsestwater.4c01044https://doi.org/10.1021/acsestwater.4c01044","url":null,"abstract":"The widespread contamination of perfluorooctanesulfonate (PFOS) has raised global concerns due to its adverse effects on human health. Consequently, there is an urgent need for sensitive, reliable, and cost-effective techniques for the in-field detection of PFOS in environmental matrices. Herein, we present a portable electrochemical sensor for PFOS analysis, utilizing a screen-printed electrode (SPE) modified with a molecularly imprinted polymer (MIP). The MIP layer specifically recognizes the electrochemically inactive PFOS, hindering electron transfer between the redox probe and the electrode, thereby providing a sensitive and robust strategy for quantifying PFOS. Under optimized conditions, a detection limit of 9.25 ± 1.39 fM (4.98 × 10–3 ng/L) was achieved using a portable potentiostat. Notably, interference from common coexisting ions and PFOS analogs was negligible. The practical applicability of the sensor was demonstrated by measuring PFOS in water samples, yielding results comparable to those obtained with the established HPLC–MS/MS method while eliminating the need for complex, time-consuming preconcentration procedures. The MIP-modified SPEs holds significant potential as a highly sensitive, cost-effective, and user-friendly technique for in-field monitoring, large-scale screening, and early warning system for PFOS contamination in water.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 3","pages":"1261–1269 1261–1269"},"PeriodicalIF":4.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608949","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

Energy Dissipation Prediction for Trapezoidal–Triangular Labyrinth Weirs Based on Soft Computing Techniques: A Comparison

IF 4.8

ACS ES&T water Pub Date : 2025-03-04 DOI: 10.1021/acsestwater.4c0119210.1021/acsestwater.4c01192

Parisa Mirkhorli, Mohammad Bagherzadeh, Hossein Mohammadnezhad, Amir Ghaderi* and Ozgur Kisi,

{"title":"Energy Dissipation Prediction for Trapezoidal–Triangular Labyrinth Weirs Based on Soft Computing Techniques: A Comparison","authors":"Parisa Mirkhorli, Mohammad Bagherzadeh, Hossein Mohammadnezhad, Amir Ghaderi* and Ozgur Kisi, ","doi":"10.1021/acsestwater.4c0119210.1021/acsestwater.4c01192","DOIUrl":"https://doi.org/10.1021/acsestwater.4c01192https://doi.org/10.1021/acsestwater.4c01192","url":null,"abstract":"The present study aimed at determining the relative energy dissipation (ED) of trapezoidal-triangular labyrinth weirs (TTLWs) using soft computing methods such as neural networks, i.e., multilayer perceptron and radical basis function, support vector machine (SVM), and multivariate adaptive regression splines, using three different scenarios. Its performance was evaluated using a variety of performance indices. Observations indicate that TTLW typically expends the most energy because of the collisions of the nappes at the upstream apexes and the circulating flow in the pool formed behind the nappes. Furthermore, as the weir sidewall angle and height increase, the ED tends to decrease. The results of the models demonstrate that while all methods performed reasonably well in predicting the ED of TTLWs, the ANN-MLP and SVM models were more accurate. Specifically, the ANN-MLP model showed superior performance, with mean absolute percentage error, RMSE, DC, and R2 values of 1.21, 0.009, 0.989, and 0.991, respectively, for the testing data set. The outcomes of the sensitivity analysis indicate that relative critical depth (yc/E0) and, after that, the angle of the LW wall (α) are the most effective factors in determining the TTLW relative ED in all methods. Overall, the comparison of model outcomes indicates that the ANN-MLP model is highly effective in predicting the ED of TTLWs.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 3","pages":"1453–1468 1453–1468"},"PeriodicalIF":4.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608992","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

Nudges, Time Poverty, and the Friction of Distance: Three Factors Explaining Arsenic Exposure in Rural India

IF 4.8

ACS ES&T water Pub Date : 2025-03-04 DOI: 10.1021/acsestwater.4c0092410.1021/acsestwater.4c00924

Gokul Sampath, and , Katherine Alfredo*,

{"title":"Nudges, Time Poverty, and the Friction of Distance: Three Factors Explaining Arsenic Exposure in Rural India","authors":"Gokul Sampath,  and , Katherine Alfredo*, ","doi":"10.1021/acsestwater.4c0092410.1021/acsestwater.4c00924","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00924https://doi.org/10.1021/acsestwater.4c00924","url":null,"abstract":"Informational nudges to adopt safe wells have been the main strategy employed to reduce arsenic exposure in West Bengal, India. However, it is still unclear why some households adopt safe sources while others do not. Using novel data on 125 households’ real water consumption over a nine-day period (a total of 1125 daily observations), we investigate whether past nudge interventions used by nongovernmental organizations and government health workers in the past have modified the distance trade-offs households make when choosing between dangerous home handpumps and distant safe sources. We found that nudges were more effective at encouraging safe source adoption for drinking water than for cooking. Even in 100% safe drinking water scenarios, using unsafe sources for cooking can exceed arsenic risk thresholds. Informing households about the health benefits of safe sources is not enough to overcome the distance barrier for all consumed water. Only households with a member who can walk further for water show a reversal in this trend. Considering household and environmental constraints can help design better interventions to provide arsenic-safe water.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 3","pages":"1173–1182 1173–1182"},"PeriodicalIF":4.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608950","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

Internal Water Storage as a Means of Improving Nitrogen Retention and Reducing Greenhouse Gas Emission in Stormwater Treatment

IF 4.8

ACS ES&T water Pub Date : 2025-02-27 DOI: 10.1021/acsestwater.4c0086410.1021/acsestwater.4c00864

Tahiya Tarannum, Bishwodeep Adhikari and Lauren E. McPhillips*,

{"title":"Internal Water Storage as a Means of Improving Nitrogen Retention and Reducing Greenhouse Gas Emission in Stormwater Treatment","authors":"Tahiya Tarannum, Bishwodeep Adhikari and Lauren E. McPhillips*, ","doi":"10.1021/acsestwater.4c0086410.1021/acsestwater.4c00864","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00864https://doi.org/10.1021/acsestwater.4c00864","url":null,"abstract":"Internal water storage (IWS) is gaining interest as a design element in stormwater control measures. It is implemented via an upturned elbow or elevated underdrain to create a subsurface storage zone with saturated conditions conducive to nitrogen removal via denitrification. However, IWS can potentially alter emissions of microbially produced greenhouse gases due to changes in subsurface redox conditions. These greenhouse gases include carbon dioxide, methane, and nitrous oxide. We investigated these biogeochemical dynamics using mesocosms mimicking free draining, IWS, and fully saturated stormwater treatment basins. In a series of simulated storm events, we quantified nitrogen removal, dissolved gas concentrations in the outflow, and surface soil emissions of greenhouse gases. IWS and fully saturated mesocosms had the best nitrate reduction, although fully saturated mesocosms exported other forms of nitrogen. Regarding greenhouse gas emissions, fully saturated mesocosms had the highest methane concentrations in outflow water and higher overall greenhouse gas fluxes from the soil surface compared with IWS. Free draining mesocosms sometimes had significantly higher nitrous oxide emissions, particularly after induced drought periods. These results suggest that stormwater basins with IWS have the potential to enhance nitrogen removal while minimizing biological greenhouse gas emissions compared with other stormwater basin drainage configurations.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 3","pages":"1137–1147 1137–1147"},"PeriodicalIF":4.8,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609116","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

Modeling of a Mainstream Partial Nitrification/Anammox Process through a Hybrid Theoretical-Machine Learning Approach

IF 4.8

ACS ES&T water Pub Date : 2025-02-27 DOI: 10.1021/acsestwater.4c0122010.1021/acsestwater.4c01220

Valeria Alvarado, Lebing Ying, Vahid Asghari, Shu-Chien Hsu* and Po-Heng Lee,

{"title":"Modeling of a Mainstream Partial Nitrification/Anammox Process through a Hybrid Theoretical-Machine Learning Approach","authors":"Valeria Alvarado, Lebing Ying, Vahid Asghari, Shu-Chien Hsu* and Po-Heng Lee, ","doi":"10.1021/acsestwater.4c0122010.1021/acsestwater.4c01220","DOIUrl":"https://doi.org/10.1021/acsestwater.4c01220https://doi.org/10.1021/acsestwater.4c01220","url":null,"abstract":"Model simulations are vital in optimizing and predicting the performance of biological wastewater treatment, especially for processes involving slow-growing bacteria. However, data records often include missing, invalid, or infrequent measurements of parameters, compromising prediction accuracy. This study used a hybrid theoretical-machine learning approach to address these issues. By leveraging the stoichiometry and kinetics, missing values were calculated in limited data sets, which were then analyzed through machine learning algorithms to reveal hidden microbial interactions. The model was validated with data from a pilot-scale partial nitritation/anammox fluidized bed membrane bioreactor (PN/A FMBR) with saline sewage. The model demonstrated strong prediction performance, with random forest outperforming other algorithms with correlation coefficients of 0.89, 0.72, and 0.80 for ammonium, nitrite, and nitrate data sets, respectively, when compared to actual values. Training sets containing 73 to 88 same-day values reached acceptable predicting performance. The results also revealed that microbial synergy in nitrogen transformation, particularly in the partial denitrification from nitrate to nitrite linked to Anammox in responding to a low DO supply, was evident in this PN/A FMBR. Additionally, key parameters, including temperature, pH, and specific microbiomes, were identified as critical for predicting PN/AFMBR performance, highlighting significant microbial interactions that warrant further investigation.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 3","pages":"1469–1480 1469–1480"},"PeriodicalIF":4.8,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609049","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