ACS Central Science最新文献_第6页

Accelerated Indirect Photodegradation of Organic Pollutants at the Soil–Water Interface 土壤-水界面有机污染物的加速间接光降解

IF 10.8 1区化学

ACS Central Science Pub Date : 2024-10-29 DOI: 10.1021/acs.est.4c0699310.1021/acs.est.4c06993

Binbin Wu, Jingyi Wang, Xingyi He, Hengyi Dai, Xiaoshan Zheng, Junye Ma, Yu Yao, Dantong Liu, Wanchao Yu, Baoliang Chen and Chiheng Chu*,

{"title":"Accelerated Indirect Photodegradation of Organic Pollutants at the Soil–Water Interface","authors":"Binbin Wu, Jingyi Wang, Xingyi He, Hengyi Dai, Xiaoshan Zheng, Junye Ma, Yu Yao, Dantong Liu, Wanchao Yu, Baoliang Chen and Chiheng Chu*, ","doi":"10.1021/acs.est.4c0699310.1021/acs.est.4c06993","DOIUrl":"https://doi.org/10.1021/acs.est.4c06993https://doi.org/10.1021/acs.est.4c06993","url":null,"abstract":"Indirect photolysis driven by photochemically produced reactive intermediates (PPRIs) is pivotal for the transformations and fates of pollutants in nature. While well-studied in bulk water, indirect photolysis processes at environmental interfaces remain largely unexplored. This study reveals a significant acceleration of indirect photodegradation of organic pollutants at the soil–water interface of wetlands. Organic pollutants experienced ubiquitously enhanced indirect photodegradation at the soil–water interfaces, with rates 1.41 ± 0.01 to 4.27 ± 0.03-fold higher than those in bulk water. This enhancement was observed across various natural and artificial wetlands, including coastal wetlands and rice paddies. In situ mapping indicated that soil–water interfaces act as hotspots, concentrating both organic pollutants and PPRIs by 9.30- and 4.27-folds, respectively. This synchronized colocation is the primary cause of the accelerated pollutant photolysis. Additionally, the contribution of each PPRI species to pollutant photolysis and a coupled transformation pathway at the soil–water interface significantly differed from those in bulk water. For instance, the contribution of singlet oxygen to metoxuron photolysis increased from 10.1% in bulk water to 44.4% at the soil–water interface. Our study highlights the rapid indirect photolysis of organic pollutants at the soil–water interfaces, offering new insights into the natural purification processes in wetlands as “Earth’s kidneys.”","PeriodicalId":10,"journal":{"name":"ACS Central Science","volume":"58 45","pages":"20181–20189 20181–20189"},"PeriodicalIF":10.8,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142609047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Systems Approaches for Addressing Complex Environmental Problems 解决复杂环境问题的系统方法

IF 10.8 1区化学

ACS Central Science Pub Date : 2024-10-29 DOI: 10.1021/acs.est.4c0773710.1021/acs.est.4c07737

Qiong Zhang*, Matthew J. Eckelman, Guangtao Fu, Sai Liang, James R. Mihelcic, Weiwei Mo and Julie B. Zimmerman,

引用次数: 0

Site Suitability and Air Pollution Impacts of Composting Infrastructure for California’s Organic Waste Diversion Law 加州有机废物转运法堆肥基础设施的场地适用性和空气污染影响

IF 10.8 1区化学

ACS Central Science Pub Date : 2024-10-29 DOI: 10.1021/acs.est.4c0637110.1021/acs.est.4c06371

Brendan P. Harrison*, Wilson H. McNeil, Tao Dai, J. Elliott Campbell and Corinne D. Scown,

{"title":"Site Suitability and Air Pollution Impacts of Composting Infrastructure for California’s Organic Waste Diversion Law","authors":"Brendan P. Harrison*, Wilson H. McNeil, Tao Dai, J. Elliott Campbell and Corinne D. Scown, ","doi":"10.1021/acs.est.4c0637110.1021/acs.est.4c06371","DOIUrl":"https://doi.org/10.1021/acs.est.4c06371https://doi.org/10.1021/acs.est.4c06371","url":null,"abstract":"California’s organic waste diversion law, SB 1383, mandates a 75% reduction in organics disposal by 2025 to reduce landfill methane emissions. Composting will likely be the primary alternative to landfilling, and 75–100 new large-scale composting facilities must be sited in the state to meet its diversion goal. We developed a strategy for evaluating site suitability for commercial composting by incorporating land-use, economic, and environmental justice criteria. In our Baseline scenario, we identified 899 candidate sites, and nearly all are within a cost-effective hauling distance of cropland and rangelands for compost application. About half of sites, mostly in rural areas, are not within a cost-effective collection distance of enough municipal organics to supply an average-sized facility. Conversely, sites near cities have greater access to organics but cause greater health damages from ammonia and volatile organic compounds emitted during the composting process. The additional required composting capacity corresponds to $266–355 million in annual damages from air pollution. However, this excludes avoided emissions from landfilling, and damages could be reduced by 56% if aerated static piles are used instead of windrows. Siting a higher number of smaller decentralized facilities could also help equally distribute air pollution to avoid concentrating burdens in certain communities.We identified and analyzed suitable compost facility sites in California to help the state meet its organic waste diversion law.","PeriodicalId":10,"journal":{"name":"ACS Central Science","volume":"58 45","pages":"19913–19924 19913–19924"},"PeriodicalIF":10.8,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.est.4c06371","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142608960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electric Demulsification Membrane Technology for Confined Separation of Oil–Water Emulsions 用于油水乳状液密闭分离的电破乳膜技术

IF 10.8 1区化学

ACS Central Science Pub Date : 2024-10-29 DOI: 10.1021/acs.est.4c0656610.1021/acs.est.4c06566

Yuna Gu, Qiancheng Xia, Bin Liu, Yang Zhao, Liangtao Pu, Jie Ding, Yanbiao Liu, Enze Li, Chad D. Vecitis* and Guandao Gao*,

{"title":"Electric Demulsification Membrane Technology for Confined Separation of Oil–Water Emulsions","authors":"Yuna Gu, Qiancheng Xia, Bin Liu, Yang Zhao, Liangtao Pu, Jie Ding, Yanbiao Liu, Enze Li, Chad D. Vecitis* and Guandao Gao*, ","doi":"10.1021/acs.est.4c0656610.1021/acs.est.4c06566","DOIUrl":"https://doi.org/10.1021/acs.est.4c06566https://doi.org/10.1021/acs.est.4c06566","url":null,"abstract":"Demulsification technology for separation of oil–water (O/W) emulsions, especially those stabilized by surfactants, is urgently needed yet remains highly challenging due to their inherent stability characteristics. Electrocoalescence has emerged as a promising solution owing to its simplicity, efficacy, and versatility, yet hindered by substantial energy consumption (e.g., >50 kWh/m3) along with undesirable Faradic reactions. Herein, we propose an innovative electric demulsification technology that leverages conductive membrane microchannels to confine oil droplets from the oil–water emulsion for achieving high energy-efficient coalescence of oil droplets. The proposed system reduces the required voltage down to 12 V, 2 orders of magnitude lower than that of conventional electrocoalescence systems, while achieving a similar separation efficacy of 91.4 ± 3.0% at a low energy consumption (3 kWh/m3) and an ultrahigh permeability >3000 L/(m2·h·bar). In situ fluorescence microscopy combined with COMSOL simulations provided insight into the fundamental mechanistic steps of an electric demulsification process confined to membrane microchannels: (1) rapid electric-field redistribution of oil droplet surfactant molecules, (2) enhanced collision probability due to confined oil droplet concentration under dielectrophoretic forces, and (3) increased collision efficacy facilitated by the membrane pore structure. This strategy may revolutionize the next generation of demulsification and oil–water separation innovations.","PeriodicalId":10,"journal":{"name":"ACS Central Science","volume":"58 45","pages":"20277–20288 20277–20288"},"PeriodicalIF":10.8,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142609694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Environmental Machine Learning, Baseline Reporting, and Comprehensive Evaluation: The EMBRACE Checklist 环境机器学习、基线报告和综合评估：EMBRACE 清单

IF 10.8 1区化学

ACS Central Science Pub Date : 2024-10-29 DOI: 10.1021/acs.est.4c0961110.1021/acs.est.4c09611

Jun-Jie Zhu, Alexandria B. Boehm and Zhiyong Jason Ren*,

引用次数: 0

Correction to “Understanding Variations in Ferrate Detection through the ABTS Method in the Presence of Electron-Rich Organic Compounds” 对 "了解富电子有机化合物存在时通过 ABTS 法检测铁酸盐的变化 "的更正

IF 10.8 1区化学

ACS Central Science Pub Date : 2024-10-29 DOI: 10.1021/acs.est.4c1115710.1021/acs.est.4c11157

Xiao-Na Zhao, Yu-Lei Liu, Zhuang-Song Huang, Jinfeng Lu, Yue Cao, Jing-Xiao Wang, Zhiqiang Chen, Jun Ma and Lu Wang*,

引用次数: 0

Synthesis of a Truncated Microcystin Tetrapeptide Molecule from a Partial Mcy Gene Cluster in Microcystis Cultures and Blooms 从微囊藻培养物和藻体中的部分 Mcy 基因簇合成截短的微囊藻毒素四肽分子

IF 10.8 1区化学

ACS Central Science Pub Date : 2024-10-29 DOI: 10.1021/acs.est.4c0003910.1021/acs.est.4c00039

Colleen E. Yancey, Lauren Hart, Apurva Chandrakant Lad, Johnna A. Birbeck, Siliang Song, Osama G. Mohamed, Andrew M. Fribley, Steven T. Haller, Ashootosh Tripathi, David J. Kennedy, Judy A. Westrick, David H. Sherman and Gregory J. Dick*,

{"title":"Synthesis of a Truncated Microcystin Tetrapeptide Molecule from a Partial Mcy Gene Cluster in Microcystis Cultures and Blooms","authors":"Colleen E. Yancey, Lauren Hart, Apurva Chandrakant Lad, Johnna A. Birbeck, Siliang Song, Osama G. Mohamed, Andrew M. Fribley, Steven T. Haller, Ashootosh Tripathi, David J. Kennedy, Judy A. Westrick, David H. Sherman and Gregory J. Dick*, ","doi":"10.1021/acs.est.4c0003910.1021/acs.est.4c00039","DOIUrl":"https://doi.org/10.1021/acs.est.4c00039https://doi.org/10.1021/acs.est.4c00039","url":null,"abstract":"Microcystis spp. threaten freshwater ecosystems through the proliferation of cyanobacterial harmful algal blooms (cyanoHABs) and production of the hepatotoxin, microcystin. While microcystin and its biosynthesis pathway, encoded by the mcy genes, have been well studied for over 50 years, a recent study found that Microcystis populations in western Lake Erie contain a transcriptionally active partial mcy operon, in which the A2 domain of mcyA and mcyB-C are present but the mcyD-J genes are absent. Here, we investigate the potential biosynthetic products and the evolutionary history of this partial operon. Our results reveal two candidate tetrapeptide constructs, with an X variable position, to be produced by strains with the partial operon. The partial operon appears necessary and sufficient for tetrapeptide biosynthesis and likely evolved from a single ancestor hundreds to tens of thousands of years ago. Bioactivity screens using Hep3B cells indicate a mild elevation of some markers of hepatotoxicity and inflammation, suggesting the need to further assess the effects of these novel secondary metabolites on freshwater ecosystems and public health. The need to assess these effects is even more pressing given the detection of tetrapeptides in both culture and western Lake Erie, which is a vital source of fresh water. Results from this study emphasize previous findings in which novel bacterial secondary metabolites may be derived from the molecular evolution of existing biosynthetic machinery under different environmental forcings.","PeriodicalId":10,"journal":{"name":"ACS Central Science","volume":"58 45","pages":"19936–19947 19936–19947"},"PeriodicalIF":10.8,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142608959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mapping Spatiotemporal Disparities in Residential Electricity Inequality Using Machine Learning 利用机器学习绘制居民用电不平等的时空差异图

IF 10.8 1区化学

ACS Central Science Pub Date : 2024-10-29 DOI: 10.1021/acs.est.4c0609310.1021/acs.est.4c06093

Ying Yu*, Xijing Li, Angel Hsu and Noah Kittner*,

{"title":"Mapping Spatiotemporal Disparities in Residential Electricity Inequality Using Machine Learning","authors":"Ying Yu*, Xijing Li, Angel Hsu and Noah Kittner*, ","doi":"10.1021/acs.est.4c0609310.1021/acs.est.4c06093","DOIUrl":"https://doi.org/10.1021/acs.est.4c06093https://doi.org/10.1021/acs.est.4c06093","url":null,"abstract":"The move toward electrification is critical for decarbonizing the energy sector but may exacerbate energy unaffordability without proper safeguards. Addressing this challenge requires capturing neighborhood-scale dynamics to uncover the blind spots in residential electricity inequality. Based on publicly available, multisourced remote sensing and census data, we develop a high-resolution, spatiotemporally explicit machine learning (ML) framework to predict tract-level monthly electricity consumption across the conterminous U.S. from 2013–2020. We then construct the electricity affordability gap (EAG) metric, defined as the gap between electricity bills and 3% of household income, to better identify energy-vulnerable communities over space and time. The results show that our framework largely improves the resolution of electricity consumption data while achieving an R2 of 0.82 compared to the Low-Income Energy Affordability Data (LEAD). We estimate an annual $16.18 billion economic burden on the ability to afford electricity bills, exceeding current federal appropriations in alleviating energy difficulties. We also observe pronounced seasonal and urban-rural disparities, with monthly EAG in summer and winter being 2–3 times greater than other seasons and rural residents facing burdens up to 1.7 times higher than their urban counterparts. These insights inform equitable electrification by addressing spatiotemporal mismatches and multiple jurisdictional challenges in energy justice efforts.","PeriodicalId":10,"journal":{"name":"ACS Central Science","volume":"58 45","pages":"19999–20008 19999–20008"},"PeriodicalIF":10.8,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142609693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptable Plasmonic Membrane Sensors for Fast and Reliable Detection of Trace Low-Micrometer Microplastics in Lake Water 用于快速可靠地检测湖水中痕量低微米微塑料的可适配质子膜传感器

IF 10.8 1区化学

ACS Central Science Pub Date : 2024-10-29 DOI: 10.1021/acs.est.4c0650310.1021/acs.est.4c06503

Ziyan Wu, Sarah E. Janssen, Michael T. Tate, Haoran Wei* and Mohan Qin*,

{"title":"Adaptable Plasmonic Membrane Sensors for Fast and Reliable Detection of Trace Low-Micrometer Microplastics in Lake Water","authors":"Ziyan Wu, Sarah E. Janssen, Michael T. Tate, Haoran Wei* and Mohan Qin*, ","doi":"10.1021/acs.est.4c0650310.1021/acs.est.4c06503","DOIUrl":"https://doi.org/10.1021/acs.est.4c06503https://doi.org/10.1021/acs.est.4c06503","url":null,"abstract":"In freshwater environments, low-micrometer microplastics (LMMPs) have captured significant attention due to their prevalence and toxicity. Yet, rapid detection of LMMPs (1–10 μm) at the single-particle level within complex freshwater matrices remains a hurdle. We developed an adaptable plasmonic membrane sensor for fast detection of individual LMMPs in eutrophic lake waters. The plasmonic membrane sensor functions both as a membrane filter and as a sensor for LMMP collection and analysis. Among the four types of membrane sensors, polycarbonate track-etch (PCTE) membrane sensors exhibit superior imaging quality for LMMPs due to their flat and homogeneous surfaces. Besides the significantly improved imaging contrast and reduced background interferences, the Raman intensity of LMMPs is enhanced by 48% ± 25% on PCTE membrane sensors compared to unmodified membranes. The increased Raman intensities of a chemical probe with an increasing gold layer thickness and a decreasing membrane pore size suggest a surface-enhanced Raman scattering effect from the membrane sensors. The membrane sensors achieve a detection limit of 1 μg/L and an ultrafast scanning time of 0.01 s for individual LMMPs across natural eutrophic lake water. The developed membrane sensors offer an adaptable tool for the swift and reliable detection of individual LMMPs in complex environmental matrices.This study developed a dual-function plasmonic membrane sensor for rapid detection of low-micrometer microplastics in a lake water matrix at the single-particle level.","PeriodicalId":10,"journal":{"name":"ACS Central Science","volume":"58 45","pages":"20172–20180 20172–20180"},"PeriodicalIF":10.8,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.est.4c06503","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142608796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid Generation of Microplastics and Plastic-Derived Dissolved Organic Matter from Food Packaging Films under Simulated Aging Conditions 食品包装薄膜在模拟老化条件下快速生成微塑料和塑料衍生的溶解有机物

IF 10.8 1区化学

ACS Central Science Pub Date : 2024-10-28 DOI: 10.1021/acs.est.4c0550410.1021/acs.est.4c05504

Liuwei Wang, Jing Gao, Wei-Min Wu, Jian Luo, Michael S. Bank, Albert A. Koelmans, John J. Boland and Deyi Hou*,

{"title":"Rapid Generation of Microplastics and Plastic-Derived Dissolved Organic Matter from Food Packaging Films under Simulated Aging Conditions","authors":"Liuwei Wang, Jing Gao, Wei-Min Wu, Jian Luo, Michael S. Bank, Albert A. Koelmans, John J. Boland and Deyi Hou*, ","doi":"10.1021/acs.est.4c0550410.1021/acs.est.4c05504","DOIUrl":"https://doi.org/10.1021/acs.est.4c05504https://doi.org/10.1021/acs.est.4c05504","url":null,"abstract":"In this study, we show that low-density polyethylene films, a prevalent choice for food packaging in everyday life, generated high numbers of microplastics (MPs) and hundreds to thousands of plastic-derived dissolved organic matter (DOM) substances under simulated food preparation and storage conditions. Specifically, the plastic film generated 66–2034 MPs/cm2 (size range 10–5000 μm) under simulated aging conditions involving microwave irradiation, heating, steaming, UV irradiation, refrigeration, freezing, and freeze–thaw cycling alongside contact with water, which were 15–453 times that of the control (plastic film immersed in water without aging). We also noticed a substantial release of plastic-derived DOM. Using ultrahigh-resolution mass spectrometry, we identified 321–1414 analytes with molecular weights ranging from 200 to 800 Da, representing plastic-derived DOM containing C, H, and O. The DOM substances included both degradation products of polyethylene (including oxidized forms of oligomers) and toxic plastic additives. Interestingly, although no apparent oxidation was observed for the plastic film under aging conditions, plastic-derived DOM was more oxidized (average O/C increased by 27–46%) following aging with a higher state of carbon saturation and higher polarity. These findings highlight the future need to assess risks associated with MP and DOM release from plastic wraps.","PeriodicalId":10,"journal":{"name":"ACS Central Science","volume":"58 45","pages":"20147–20159 20147–20159"},"PeriodicalIF":10.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142609028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0