Environmental Science & Technology Letters Environ.最新文献_第7页

Gas Fermentation Coupled with Water Remediation 气体发酵与水质修复相结合

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-07-22 DOI: 10.1021/acs.estlett.4c0044010.1021/acs.estlett.4c00440

Chenkai Niu, Zhiqiang Zuo, Xinyu Zhao, Chunyu Lai, Danting Shi, Jia Meng and Tao Liu*,

{"title":"Gas Fermentation Coupled with Water Remediation","authors":"Chenkai Niu, Zhiqiang Zuo, Xinyu Zhao, Chunyu Lai, Danting Shi, Jia Meng and Tao Liu*, ","doi":"10.1021/acs.estlett.4c0044010.1021/acs.estlett.4c00440","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00440https://doi.org/10.1021/acs.estlett.4c00440","url":null,"abstract":"Gasification is a promising method for extracting carbon from nearly all types of biowastes, producing gaseous products containing H2, CO, and CO2. This study demonstrates a novel combination of gas fermentation and water remediation. On the basis of a membrane biofilm reactor fed with a gaseous mixture of H2 and CO2, the effective removal of nitrate (>99%, 0.44 g of N m–2 day–1) and perchlorate (>95%, 18.3 mg of Cl m–2 day–1) was demonstrated in a long-term experiment, together with the observed generation of volatile fatty acids (VFAs). A suite of batch experiments were conducted in situ and ex situ to reveal the mechanisms of the observed removals, which showed the tight coupling of in situ gas fermentation and contaminant removal. Specifically, the heterotrophic reactions using VFAs formed in gas fermentation played the dominant role in contaminant removal (>90%), while the autotrophic reaction driven by H2 in the gas mixture contributed marginally (<10%). The examination of the microbial community showed the dominance of fermenting bacteria, such as Acetobacterium_unclassified and Sporomusa, and denitrifying bacteria, such as Comamonas, Dechlorobacter, and Pseudomonas. Together, these results lead to the proposal of an alternative to gaseous products from biowaste gasification to achieve effective removal of various contaminants in water systems.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 8","pages":"851–855 851–855"},"PeriodicalIF":8.9,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141973235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel Approach for Fresh Urine Stabilization during Collection and Storage 在采集和储存过程中稳定新鲜尿液的新方法

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-07-22 DOI: 10.1021/acs.estlett.4c0049710.1021/acs.estlett.4c00497

Hao Liu, Andrea Merenda, Mingyu Guo, Jungbin Kim, Sherub Phuntsho, Hokyong Shon and Peizhe Sun*,

{"title":"Novel Approach for Fresh Urine Stabilization during Collection and Storage","authors":"Hao Liu, Andrea Merenda, Mingyu Guo, Jungbin Kim, Sherub Phuntsho, Hokyong Shon and Peizhe Sun*, ","doi":"10.1021/acs.estlett.4c0049710.1021/acs.estlett.4c00497","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00497https://doi.org/10.1021/acs.estlett.4c00497","url":null,"abstract":"Waterless urinals are critical in urine diversion systems aimed at nutrient recovery for a circular economy. However, the existence of urease can trigger urea hydrolysis, causing mineral precipitation in waterless urinals and pipes, which leads to nitrogen loss and unpleasant odors. This research focuses on creating a urine stabilization product (USP) by combining camphor, ketone, and citric acid in specific ratios to prevent urea hydrolysis in waterless urinals. The effectiveness of the USP was evaluated using pH, urea, phosphate, and ammonium data in real urine samples. The results showed that the USP inhibited 70% of urea hydrolysis and reduced the pH. The introduction of camphor was found to decrease the diversity of the microbial community, while the Kathon preservative serves as the key active ingredient, significantly affecting urea hydrolysis rates during storage. The developed USP demonstrated a rate of inhibition of the total biomass in urine of ∼80%, with only slight bacterial regrowth over 9 days. Practically, the USP is expected to treat ≤300 L of urine, which is roughly equivalent to 2000 instances of urination. To the best of our knowledge, this study is the first to develop a slow-release USP specifically designed to inhibit urea hydrolysis in waterless urinals.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 8","pages":"895–900 895–900"},"PeriodicalIF":8.9,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141973157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Can Qualitative Nontarget Data Be Indicative of PFAS Contamination? First Evidence by Correlation with EOF in Environmental Samples 定性非目标数据能否表明存在 PFAS 污染？环境样本中与 EOF 相关性的初步证据

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-07-17 DOI: 10.1021/acs.estlett.4c0044210.1021/acs.estlett.4c00442

Jonathan Zweigle*, Fabian Simon*, Björn Meermann and Christian Zwiener,

{"title":"Can Qualitative Nontarget Data Be Indicative of PFAS Contamination? First Evidence by Correlation with EOF in Environmental Samples","authors":"Jonathan Zweigle*, Fabian Simon*, Björn Meermann and Christian Zwiener, ","doi":"10.1021/acs.estlett.4c0044210.1021/acs.estlett.4c00442","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00442https://doi.org/10.1021/acs.estlett.4c00442","url":null,"abstract":"We correlated nontarget screening (NTS) features and extractable organic fluorine (EOF) data for PFAS analysis in environmental samples. Soils, sediments, and ashes from different locations (Germany, France, and Lithuania) (n = 34) were analyzed via liquid chromatography-high-resolution mass spectrometry and high-resolution continuum source-graphite furnace molecular absorption spectrometry. NTS feature prioritization based on mass to carbon (m/C) and mass defect to carbon (MD/C) ratios was applied to discriminate potential PFAS features from common co-extracted organic matrix. Our results show a high correlation between quantitative EOF and the prioritized feature number (R2 = 0.87; rPearson = 0.93) and the total peak area of prioritized features (R2 = 0.97; rPearson = 0.98), while commonly applied MD ranges for filtering showed much weaker correlation with EOF. The observed correlations in PFAS-contaminated samples highlight that MD/C–m/C prioritization is associated with a good indication of the overall PFAS burden as evidenced by EOF. Also, semiquantitative data can be extracted as shown by EOF versus prioritized peak areas. The correlations indicate that weakly fluorinated compounds were negligible and that the EOF was mostly composed of highly fluorinated substances. Our method features the potential to automatically screen large NTS data sets for potential PFAS, determine the contribution of PFAS to EOF, and provide preliminary estimates of the overall PFAS burden.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 9","pages":"996–1001 996–1001"},"PeriodicalIF":8.9,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142159771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Repression of Microbial Arsenite Uptake and Methylation by Dissolved Organic Carbon 溶解有机碳抑制微生物对亚砷酸的吸收和甲基化

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-07-15 DOI: 10.1021/acs.estlett.4c0040010.1021/acs.estlett.4c00400

Hyun Yoon, Michael A. P. Vega, Jiaxing Wang, Alexandre J. Poulain, Andrea Giometto, Ludmilla Aristilde and Matthew C. Reid*,

{"title":"Repression of Microbial Arsenite Uptake and Methylation by Dissolved Organic Carbon","authors":"Hyun Yoon, Michael A. P. Vega, Jiaxing Wang, Alexandre J. Poulain, Andrea Giometto, Ludmilla Aristilde and Matthew C. Reid*, ","doi":"10.1021/acs.estlett.4c0040010.1021/acs.estlett.4c00400","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00400https://doi.org/10.1021/acs.estlett.4c00400","url":null,"abstract":"Arsenic methylation is the microbe-mediated transformation of inorganic As into methylated species, an important component of the biogeochemical arsenic cycle in rice paddies. Prior to methylation, arsenite is taken up into bacterial cells through GlpF, an aquaglyceroporin channel for uptake of glycerol and other low-molecular-weight organics. The uptake and subsequent biotransformation of arsenite are therefore linked to the bacterial utilization of organics. We hypothesized that increasing concentrations of carbon substrates will repress the uptake and methylation of arsenite through a carbon catabolite repression (CCR) mechanism. An arsenic biosensor assay demonstrated that arsenite uptake was repressed in the presence of glucose and environmental dissolved organic matter (DOM) isolates. RT-qPCR analysis of glpF expression linked the decrease in arsenite uptake at higher carbon concentrations to the repression of glycerol-transporting GlpF channels. Methylation of arsenite by Arsenicibacter rosenii, a rice paddy isolate, was repressed by the upper glycolytic substrates glucose, xylose, and mannose, but was not affected by pyruvate and succinate. This result is consistent with current CCR theories. Our findings provide a new perspective on the impacts of organic carbon on microbial arsenic transformations, and suggest that arsenic biotransformation can be repressed in systems that are rich in upper glycolytic carbon substrates.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 8","pages":"838–844 838–844"},"PeriodicalIF":8.9,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141973214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid Screening of Chemicals with Placental Transfer Risk Using Interpretable Machine Learning 利用可解释的机器学习快速筛查有胎盘转移风险的化学品

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-07-08 DOI: 10.1021/acs.estlett.4c0041310.1021/acs.estlett.4c00413

Xiaojia Chen, Jingzhi Yao, Yu Ma, Yuanyuan Fang, Wenxin Wang, Xiaojun Deng, Ling Tan, Yi-Jun Fan* and Mingliang Fang*,

{"title":"Rapid Screening of Chemicals with Placental Transfer Risk Using Interpretable Machine Learning","authors":"Xiaojia Chen, Jingzhi Yao, Yu Ma, Yuanyuan Fang, Wenxin Wang, Xiaojun Deng, Ling Tan, Yi-Jun Fan* and Mingliang Fang*, ","doi":"10.1021/acs.estlett.4c0041310.1021/acs.estlett.4c00413","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00413https://doi.org/10.1021/acs.estlett.4c00413","url":null,"abstract":"Assessing the placental transfer efficiency of toxic chemicals remains challenging. Here, a robust machine learning (ML) model was developed to predict the human fetal–maternal blood concentration ratio (F/M) at the exposomic level. By curating one of the largest F/M data sets, we evaluated a series of prediction models using a combination of 12 ML algorithms and four molecular fingerprints. The long short-term memory (LSTM) model with retraining optimization works as the best performer, displayed robust accuracy (R2train = 0.91, R2test = 0.68), and was subsequently applied to our previously developed risk-based Human Exposome and Metabolite Database (HExpMetDB). The fetal hazard quotient (FHQ) was assessed using the predicted F/M ratios, probabilistic exposure dose, and toxicity index. From the top 1000 prioritized chemicals via FHQs ranking, we randomly selected four candidates (triethyl phosphate, benzotriazole, oxybenzone, and dichlormid) to perform in vivo experiments. All four chemicals exhibited transplacental potential (F/M ratio >0.3) as new possible chemicals of concern, demonstrating the accuracy of the predictive model. The Shapley additive explanation (SHAP) method revealed the top 10 key structural fragments related to the transplacental transfer efficiency. We believe that the prediction model can serve as an effective tool to screen potential risk compounds of fetal exposure.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 8","pages":"798–804 798–804"},"PeriodicalIF":8.9,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141973483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Urinary Iodine Metabolomics as a Novel Tool for Understanding Environmentally Induced Thyroid Hormone Metabolic Alteration 尿碘代谢组学是了解环境诱导甲状腺激素代谢变化的新工具

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-07-05 DOI: 10.1021/acs.estlett.4c0042810.1021/acs.estlett.4c00428

Qianqian Chai, Yan Lin*, Yifang Zhu*, Jinming Liu, Xiaodi Shi, Xing Jiang, Xinchen Lu, Lailai Yan, Junfeng Zhang, Tong Zhu, Jesus A. Araujo and Xinghua Qiu*,

{"title":"Urinary Iodine Metabolomics as a Novel Tool for Understanding Environmentally Induced Thyroid Hormone Metabolic Alteration","authors":"Qianqian Chai, Yan Lin*, Yifang Zhu*, Jinming Liu, Xiaodi Shi, Xing Jiang, Xinchen Lu, Lailai Yan, Junfeng Zhang, Tong Zhu, Jesus A. Araujo and Xinghua Qiu*, ","doi":"10.1021/acs.estlett.4c0042810.1021/acs.estlett.4c00428","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00428https://doi.org/10.1021/acs.estlett.4c00428","url":null,"abstract":"In this study, we developed a novel iodine metabolomic method and identified 42 iodine-containing compounds in urine. Using in vitro experiments, we confirmed that these compounds were degradation metabolites of thyroid hormones (THs) and may be used to understand the peripheral metabolism of THs. These metabolites were then measured in urine samples collected in a natural experiment in 26 healthy adults experiencing substantial environmental changes after traveling from Los Angeles to Beijing. Despite the absence of significant alterations in iodine intakes or circulating TH levels, the level of urinary TH metabolites significantly decreased by ≤52.4% in Beijing, in association with exposure to polycyclic aromatic hydrocarbons and metals and the subsequent oxidative–antioxidative responses. All of these changes were reversed after the participants had returned to Los Angeles. These results support the promising use of iodine metabolomics to detect early TH metabolic alteration and shed light on novel mechanisms for environmental impacts on TH homeostasis.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 8","pages":"805–811 805–811"},"PeriodicalIF":8.9,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141972633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flexible Electrochemical Stripping for Wastewater Ammonia Recovery with On-Demand Product Tunability 用于废水氨回收的灵活电化学剥离，可按需进行产品调整

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-07-05 DOI: 10.1021/acs.estlett.4c0036610.1021/acs.estlett.4c00366

Anna Kogler, Meili Gong, Kindle S. Williams and William A. Tarpeh*,

{"title":"Flexible Electrochemical Stripping for Wastewater Ammonia Recovery with On-Demand Product Tunability","authors":"Anna Kogler, Meili Gong, Kindle S. Williams and William A. Tarpeh*, ","doi":"10.1021/acs.estlett.4c0036610.1021/acs.estlett.4c00366","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00366https://doi.org/10.1021/acs.estlett.4c00366","url":null,"abstract":"Nitrogen in wastewater can be recovered to prevent negative environmental, human health, and economic impacts and to enable distributed chemical manufacturing. We developed novel flexible electrochemical stripping (FECS) for tunable recovery of ammonia/ammonium (total ammonia nitrogen, TAN) from urine as (NH4)2SO4 and aqueous NH3. Batch and continuous experiments demonstrated that product speciation could be readily controlled by modifying electrochemical cell operation frequency, duration, and applied current without affecting TAN removal. During continuous experiments, FECS recovered NH3 solutions with concentrations similar to ready-to-use cleaners (1% and 2% NH3 (w/w) or 8.22 and 16.4 g/L TAN) and cleaner concentrates (5% NH3 (w/w) or 41.1 g/L TAN), as well as (NH4)2SO4 solutions between 5 and 18.4 g/L TAN, approaching commercial fertilizer concentrations (28.4 g/L TAN). Beyond modifying applied current, future process engineering and operating condition optimization should reduce energy consumption, increase recovery efficiency, and enhance economic viability of FECS. Our findings will enable the development and deployment of electrochemical nitrogen recovery in contexts with varying needs for ammonia-based products, paving the way for circular economies that integrate distributed chemical manufacturing with sanitation systems.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 8","pages":"886–894 886–894"},"PeriodicalIF":8.9,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141972634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the Relative Concentration Efficiency and Spatial–Temporal Distribution of Plasmid pBI143 in Raw Wastewater 评估原废水中质粒 pBI143 的相对浓度效率和时空分布情况

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-07-02 DOI: 10.1021/acs.estlett.4c0048510.1021/acs.estlett.4c00485

Bethany Oceguera Johnson, Marlee Shaffer, Devin North, Kien Vu and Kyle Bibby*,

{"title":"Assessing the Relative Concentration Efficiency and Spatial–Temporal Distribution of Plasmid pBI143 in Raw Wastewater","authors":"Bethany Oceguera Johnson, Marlee Shaffer, Devin North, Kien Vu and Kyle Bibby*, ","doi":"10.1021/acs.estlett.4c0048510.1021/acs.estlett.4c00485","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00485https://doi.org/10.1021/acs.estlett.4c00485","url":null,"abstract":"Plasmid pBI143 has recently been identified as being highly abundant in the human gut microbiome, suggesting potential as a fecal water quality indicator and normalization marker in wastewater-based surveillance. We evaluated the relative concentration efficiency and spatial–temporal distribution in raw wastewater to inform its development as a marker. The results showed significantly higher (p < 0.01) enrichment in raw wastewater solids (mean of 9.2 × 107 GC/mL) than in liquid fractions [mean of 2.3 × 106 genome copies (GC)/mL]. The relative concentration efficiencies were 28% for nanotrap particles, 23% for Amicon ultrafiltration, 3.6% for pH drop and filtration, 4% for skim milk flocculation, and 0.04% for poly(ethylene glycol) precipitation compared to direct wastewater extraction. DNase pretreatment reduced pBI143 levels by 90.3%, indicating that it is mainly extracellular in raw wastewater. Over 21 days, pBI143 levels remained stable and were consistently a mean of 1.3 log10 higher than other fecal indicators (Carjivirus, PMMoV, and HF183). In raw wastewater from eight states (n = 16), pBI143 concentrations averaged 2.2 × 106 GC/mL (95% confidence interval of 1.7–2.7 × 106) and pBI143 was detected in all samples. The findings support pBI143’s potential as a fecal indicator and normalization marker, though further validation is needed to confirm its specificity to humans.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 8","pages":"812–817 812–817"},"PeriodicalIF":8.9,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141973096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multisatellite Data Depicts a Record-Breaking Methane Leak from a Well Blowout 多卫星数据描绘了破纪录的井喷甲烷泄漏事件

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-06-30 DOI: 10.1021/acs.estlett.4c0039910.1021/acs.estlett.4c00399

Luis Guanter*, Javier Roger, Shubham Sharma, Adriana Valverde, Itziar Irakulis-Loitxate, Javier Gorroño, Xin Zhang, Berend J. Schuit, Joannes D. Maasakkers, Ilse Aben, Alexis Groshenry, Antoine Benoit, Quentin Peyle and Daniel Zavala-Araiza,

{"title":"Multisatellite Data Depicts a Record-Breaking Methane Leak from a Well Blowout","authors":"Luis Guanter*, Javier Roger, Shubham Sharma, Adriana Valverde, Itziar Irakulis-Loitxate, Javier Gorroño, Xin Zhang, Berend J. Schuit, Joannes D. Maasakkers, Ilse Aben, Alexis Groshenry, Antoine Benoit, Quentin Peyle and Daniel Zavala-Araiza, ","doi":"10.1021/acs.estlett.4c0039910.1021/acs.estlett.4c00399","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00399https://doi.org/10.1021/acs.estlett.4c00399","url":null,"abstract":"Accidental blowouts in oil and gas wells can result in large and prolonged methane emissions, which are often unreported when happening in remote places. The rapid advancement of space-based methods for detecting and quantifying methane plumes provides an essential tool for uncovering these superemission events. We use a number of methane-sensitive satellite missions, including the Sentinel-5P/TROPOMI global mapper and several high-resolution instruments, to document a methane leak from a well blowout happening in Kazakhstan’s Karaturun East oil field in 2023. A dense time series of plume detections from those satellites shows that the leak was active during 205 days and that most of the emissions were in the range 20–50 t/h. Using 48 high-quality emission rate estimates, we calculate that a total of 131 ± 34 kt of methane was released to the atmosphere during this leak, which exceeds the total emissions from all previously documented accidents. Our study characterizes the evolution and magnitude of the 2023 Karaturun East methane leak and showcases how different types of satellite instruments can be combined to document and quantify methane leaks active during long time periods.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 8","pages":"825–830 825–830"},"PeriodicalIF":8.9,"publicationDate":"2024-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c00399","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141973382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cysteine-Protected Antibacterial Spheroids of Atomically Precise Copper Clusters for Direct and Affordable Arsenic Detection from Drinking Water 受半胱氨酸保护的抗菌球状原子团簇铜，用于直接、经济地检测饮用水中的砷含量

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-06-28 DOI: 10.1021/acs.estlett.4c0026410.1021/acs.estlett.4c00264

Jenifer Shantha Kumar, Arijit Jana, Jayathraa Raman, Hema Madhuri Veera, Amoghavarsha Ramachandra Kini, Jayoti Roy, Saurav Kanti Jana, Tiju Thomas and Thalappil Pradeep*,

{"title":"Cysteine-Protected Antibacterial Spheroids of Atomically Precise Copper Clusters for Direct and Affordable Arsenic Detection from Drinking Water","authors":"Jenifer Shantha Kumar, Arijit Jana, Jayathraa Raman, Hema Madhuri Veera, Amoghavarsha Ramachandra Kini, Jayoti Roy, Saurav Kanti Jana, Tiju Thomas and Thalappil Pradeep*, ","doi":"10.1021/acs.estlett.4c0026410.1021/acs.estlett.4c00264","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00264https://doi.org/10.1021/acs.estlett.4c00264","url":null,"abstract":"Rapid and naked-eye detection of water-borne contaminants using molecularly precise nanomaterials has emerged as a promising strategy to reduce the impact of chemical pollution. This study presents a luminescence-based arsenic (As) sensor, eliminating the need for sample preparation. Incorporating red-emitting spheroidal cluster-assembled superstructures (CASs), comprised of Cu17 nanoclusters (Cu17NCs), coprotected by l-cysteine (l-Cys) and 1,2-bis(diphenylphosphino) ethane (DPPE) ligands, the sensor exhibits notable sensitivity toward arsenite (As3+) and (As5+) ions. A detection limit of 1 ppb in tap water was achieved through luminescence-based quenching. Remarkably, it demonstrates selective detection of As amidst common interfering metal ions such as Cd2+, Hg2+, Fe3+, Pb2+, Cu2+, and Cr3+. A sensor disc made of CASs coated on nonwoven polypropylene (PP) mats has been devised for practical field applications. Electron microscopy reveals disrupted morphology of the spheroids due to As interaction. Moreover, the CASs exhibit significant antibacterial efficacy against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus and antibiofilm properties against Bacillus subtilis. This research highlights the effectiveness of atomically precise clusters for a practical application with direct societal relevance.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 8","pages":"831–837 831–837"},"PeriodicalIF":8.9,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141973503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0