ACS ES and T Water

Plastic pollution poses a worldwide environmental threat, yet limited attention has been paid to its terrestrial fate. Although rainwater has low photochemical activity, its long-term effect on the photodegradation of plastic waste has predominantly remained unexplored. In this study, poly(vinyl chloride) bags, polypropylene masks, polystyrene foam, and polyethylene bags were exposed to sunlight, with or without rainwater, for 12 months under field conditions. The results revealed that the plastics exposed to rainwater released enormous amounts of organic carbon and severely aged microplastics in the first few months. Rainwater-exposed plastics also exhibited strong oxidation, and rainwater altered the order of functional group changes of commercial plastics (except polystyrene foam), as evidenced by two-dimensional correlation spectroscopy (2D-COS) analysis. To provide more direct evidence of the relationship between rainwater exposure and the photodegradation of plastic/microplastic, a laboratory experiment was conducted. The laboratory experiments confirmed the promoting effect of rainwater on photodegradation. Moreover, a stronger signal of reactive oxygen species was detected with an electron paramagnetic resonance spectrometer on microplastics exposed to rainwater residues compared with those not exposed to rainwater, which highlights the significance of rainwater as a crucial external source of reactive oxygen species (ROS). Overall, these findings provide essential insights into the effect of rainwater on plastic photodegradation.

Jiehan Duan

Danqing Zheng

Nora Fung-yee Tam

Marcello Brigante

Gilles Mailhot

Haichao Zhou

Yanlin Wu

Wenbo Dong

ACS ES&T Water

Neglected but Crucial Role Played by Rainwater in the Photodegradation of Plastic

Biodegradation of toxic cyanobacterial cyclic peptides microcystins (MCs) by heterotrophic bacteria isolated from freshwater has gained global interest as an eco-friendly approach for water treatment. This study focused on elucidating the structures of MC-LR breakdown products generated by a group of five bacteria previously isolated from Lake Erie. Three isomers of a tetrapeptide NH2-Adda-Glu-Mdha-Ala-OH (Adda-TetraP-1, 2, and 3) and a cyclic tripeptide NH2-Adda-Glu-Mdha-OH (Adda-TriP) were identified during the MC-LR degradation process. Of these peptides, only linear Adda-TetraP-1 was described previously. UHPLC-high-resolution (HR)-MS and MS/MS data acquired for tetrapeptides and the tripeptide and their thiol derivatization showed that Adda-TetraP-2, Adda-TetraP-3, and Adda-TriP were cyclic peptides that contained modified Mdha and Adda moieties. The experimental evidence suggests that the Adda amine group of Adda-TetraP-1 underwent intramolecular aza-Michael reaction with the Mdha double bond to form a cyclic tetrapeptide, which appeared in two diastereomeric forms, of which Adda-TetraP-2 was formed faster than Adda-Tetra-P-3. The Mdha-Ala peptide bond of Adda-TetraP-2 appeared to be hydrolyzed by bacteria to form Adda-TriP. Independent of our laboratory cultures, Adda-TetraP-1, 2, and 3 were detected in Lake Erie water during cyanobacterial blooms, and identifying them will assist in elucidating biodegradation pathways of MC congeners and genes relevant to MC degradation.

Sharmila I. Thenuwara

Upasana Shrestha

Judy A. Westrick

Jason F. Huntley

Dragan Isailovic

Identification of Novel Peptides Originated from Biodegradation of Microcystins Using UHPLC-HRMS/MS

利用UHPLC-HRMS/MS鉴定源自微囊藻毒素生物降解的新型肽类

Angelina Jaeger

Joseph Monaghan

Haley Tomlin

Jamieson Atkinson

Chris G. Gill

Erik T. Krogh

Intensive Spatiotemporal Characterization of the Tire Wear Toxin 6PPD Quinone in Urban Waters

城市水体中轮胎磨损毒素6PPD醌的时空密集表征

Wastewater treatment plants (WWTPs) could be conduits of polyfluoroalkyl substances (PFAS) contaminants in the environment. This study investigated the fate of 40 PFAS compounds across nine municipal WWTPs with varying treatment capacity and processes. High concentrations of perfluoroalkyl carboxylic acids (PFCAs) and perfluoroalkyl sulfonic acids (PFSAs) were detected in wastewater, with the ratio of their total concentrations (∑PFCAs/∑PFSAs) always greater than one. Transformation of precursors by activated sludge processes significantly increased the concentrations of short-chain PFCAs (e.g., perfluoropentanoic acid (PFPeA) and perfluorohexanoic acid (PFHxA)), while further advanced treatment processes offered minimal removal of perfluoroalkyl acids. Treatment capacity and PFAS removal efficiency showed no apparent correlation. The maximum possible PFAS loads discharged from WWTPs were 340–9645 g·year–1, similar to those entering the WWTPs. Among six regulated PFAS compounds, detection frequency was 100% for five (perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), perfluorononanoic acid (PFNA), perfluorobutanesulfonic acid (PFBS), and perfluorohexanesulfonic acid (PFHxS)) and 67% for hexafluoropropylene oxide dimer acid (HFPO–DA) (Gen-X). Concentrations of PFOA and PFOS in WWTP discharges consistently exceeded 4 ng·L–1. The hazard index (HI) for mixtures containing two or more of the four PFAS (PFNA, PFBS, PFHxS, and HFPO–DA) ranged from 0.2 to 6.1. These findings indicate that wastewater discharges may pose a risk, emphasizing the need for enhanced PFAS removal strategies in wastewater treatment processes.

Juhee Kim

Xiaoyue Xin

Gary L. Hawkins

Qingguo Huang

Ching-Hua Huang

Occurrence, Fate, and Removal of Per- and Polyfluoroalkyl Substances (PFAS) in Small- and Large-Scale Municipal Wastewater Treatment Facilities in the United States

美国小型和大型市政污水处理厂中全氟和多氟烷基物质（PFAS）的发生、归趋及去除

Chuanzi Gao

Daniel Simon Drage

Mohamed Abou-Elwafa Abdallah

Feng Quan

Kun Zhang

Shiyao Hu

Xue Zhao

Yi Zheng

Stuart Harrad

Wenhui Qiu

Factors Influencing Concentrations of PFAS in Drinking Water: Implications for Human Exposure

饮用水中PFAS浓度影响因素及其对人类暴露的启示

Maddala Sree Kanth

Mankala Karthik

S. Lakshmi Sandhya Rani

Vinoth Kumar Raja

Bentonite-Based Low-Cost Ceramic Microfiltration Membranes for Sewage Wastewater Treatment

膨润土基低成本陶瓷微滤膜在污水处理中的应用

Bukola Ojobe

Idris Okeowo

Jiri Rathousky

Libor Brabec

Tereza Marikova

Eliska Mikyskova

Jana Kofronova

Radek Vurm

Stepanka Smrckova

Saeed Jamali Ashtiani

Karel Friess

Zbynek Dzuman

Vojtech Kouba

Jan Bartacek

Efficient Degradation of Recalcitrant Pharmaceuticals in Greywater Using Treatment of MBR and Immobilized TiO<sub>2</sub> Porous Layers

利用MBR和固定化TiO<sub>2</sub>多孔层高效降解灰水中的难降解药物

Kiattipong Kamdee

Prayath Nantasin

Chakrit Saengkorakot

Patchareeya Chanruang

Chalermpong Polee

Nichtima Uapoonphol

Ratchai Fungklin

Wiranee Sriwiang

Wanlapa Wisitthammasri

Srilert Chotpantarat

Hydrochemistry of Groundwater in Quaternary Aquifers of the Phrae Basin, Northern Thailand

泰国北部帕府盆地第四纪含水层地下水的水化学特征

Jessica Hofstetter

David A. Holcomb

Amy M. Kahler

Camila Rodrigues

Andre Luiz Biscaia Ribeiro da Silva

Mia C. Mattioli

Performance of Conditional Random Forest and Regression Models at Predicting Human Fecal Contamination of Produce Irrigation Ponds in the Southeastern United States

预测美国东南部农产品灌溉池塘人类粪便污染的条件随机森林与回归模型性能

Marieh Arekhi

David Reckhow

Leila Alidokht

Mariana Lanzarini-Lopes

Designing a Batch Experimental Setup to Investigate the Kinetics of Methylene Blue Degradation in Water Using Radiofrequency-Induced Electromagnetic Fields

设计批量实验装置以研究水中亚甲基蓝降解动力学：利用射频诱导电磁场

短名	ACS EST Water
Journal Impact	4.66
国际分区	WATER RESOURCES(Q1)

ISSN	2690-0637
h-index	29

出版信息	出版商: American Chemical Society，出版周期: ，期刊类型: journal，开源期刊: 否
基本数据	创刊年份: 2021，原创研究文献占比: 95.58%，自引率:， Gold OA占比: 6.50%

ACS ES and T Water

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Neglected but Crucial Role Played by Rainwater in the Photodegradation of Plastic

Identification of Novel Peptides Originated from Biodegradation of Microcystins Using UHPLC-HRMS/MS

Intensive Spatiotemporal Characterization of the Tire Wear Toxin 6PPD Quinone in Urban Waters

Occurrence, Fate, and Removal of Per- and Polyfluoroalkyl Substances (PFAS) in Small- and Large-Scale Municipal Wastewater Treatment Facilities in the United States

Factors Influencing Concentrations of PFAS in Drinking Water: Implications for Human Exposure

Bentonite-Based Low-Cost Ceramic Microfiltration Membranes for Sewage Wastewater Treatment

Efficient Degradation of Recalcitrant Pharmaceuticals in Greywater Using Treatment of MBR and Immobilized TiO₂ Porous Layers

Hydrochemistry of Groundwater in Quaternary Aquifers of the Phrae Basin, Northern Thailand

Performance of Conditional Random Forest and Regression Models at Predicting Human Fecal Contamination of Produce Irrigation Ponds in the Southeastern United States

Designing a Batch Experimental Setup to Investigate the Kinetics of Methylene Blue Degradation in Water Using Radiofrequency-Induced Electromagnetic Fields

ACS ES and T Water

期刊引文格式

有 1 位以上作者的期刊

有 2 位作者的期刊

有 3 位作者的期刊

有 5 位以上作者的期刊

书籍引用格式

学位论文引用格式

网页引用格式

专利引用格式

手工熬夜修改参考文献？研飞自动匹配期刊，一键轻松成稿，支持 Word/WPS

投稿经验分享

Neglected but Crucial Role Played by Rainwater in the Photodegradation of Plastic

Identification of Novel Peptides Originated from Biodegradation of Microcystins Using UHPLC-HRMS/MS

Intensive Spatiotemporal Characterization of the Tire Wear Toxin 6PPD Quinone in Urban Waters

Occurrence, Fate, and Removal of Per- and Polyfluoroalkyl Substances (PFAS) in Small- and Large-Scale Municipal Wastewater Treatment Facilities in the United States

Factors Influencing Concentrations of PFAS in Drinking Water: Implications for Human Exposure

Bentonite-Based Low-Cost Ceramic Microfiltration Membranes for Sewage Wastewater Treatment

Efficient Degradation of Recalcitrant Pharmaceuticals in Greywater Using Treatment of MBR and Immobilized TiO2 Porous Layers

Hydrochemistry of Groundwater in Quaternary Aquifers of the Phrae Basin, Northern Thailand

Performance of Conditional Random Forest and Regression Models at Predicting Human Fecal Contamination of Produce Irrigation Ponds in the Southeastern United States

Designing a Batch Experimental Setup to Investigate the Kinetics of Methylene Blue Degradation in Water Using Radiofrequency-Induced Electromagnetic Fields

Efficient Degradation of Recalcitrant Pharmaceuticals in Greywater Using Treatment of MBR and Immobilized TiO₂ Porous Layers