Article
Biotechnology & Applied Microbiology
Huiting Chen, Martin Reinhard, Luhua You, Karina Yew-Hoong Gin
Summary: Understanding irreversible and reversible sorption in sediment is crucial for predicting the fate and transport of contaminants in surface waters. This study demonstrated the irreversible accumulation and reversible absorption of perfluoroalkyl acids in sediment from an urban water body. The results suggest that sediment can act as a sink for the studied contaminants and rubbery SOC may act as a concentration buffer. The S-D cycling can increase the irreversible absorption concentration, even at lower exposure concentrations, and the log KOC values of the sediment overlap with field data.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Environmental Sciences
Bettie Cormier, Flora Borchet, Anna Karrman, Marta Szot, Leo W. Y. Yeung, Steffen H. Keiter
Summary: This study investigated the sorption processes of PFOS on PE microplastic particles and the desorption of PFOS from PE MPs under simulated digestive conditions. The results showed that smaller particles had higher PFOS concentrations sorbed onto PE and were also more easily desorbed. Prolonged exposure of PE MPs to PFOS led to higher concentrations adsorbed by PE MPs, increasing the risk of transferring relevant concentrations of PFOS during digestion.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Mengfan Dai, Ni Yan, Mark L. Brusseau
Summary: This study focuses on the impact of bacteria on the retention and transport of per- and poly-fluoroalkyl substances (PFAS) in soil and groundwater. The results show that the presence of bacteria significantly hinders the transport of PFAS and the biomass of bacteria plays a key role in this process. It highlights the need for further research on the effect of bacteria on PFAS transport in soil and groundwater.
Article
Engineering, Environmental
Alex Kugler, Hailiang Dong, Chen Li, Cheng Gu, Charles E. Schaefer, Youn Jeong Choi, Danielle Tran, Morgan Spraul, Christopher P. Higgins
Summary: A method of degrading PFOS using hydrated electrons generated from IAA upon UV irradiation was developed, achieving 40-70% defluorination at neutral pH. The spatial proximity of IAA and PFOS on an organic polymer was found to be effective for this process, even in the presence of bicarbonate and chloride ions or natural groundwater. This approach provides an alternative for treating concentrated PFAS solutions under ambient conditions.
Article
Environmental Sciences
R. K. Rowe, F. B. Barakat, D. Patch, K. Weber
Summary: This study investigates the diffusion and sorption of PFOA, PFOS, PFBS, 6:2 FTS, and GenX through TPU and PVC-EIA liners. The results show significant diffusion through TPU, especially at higher temperatures, while PVC-EIA liners exhibit excellent diffusive resistance, especially at 23°C. Sorption tests show no measurable partitioning of compounds to the liners examined.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biotechnology & Applied Microbiology
B. O. Fagbayigbo, B. O. Opeolu, O. S. Fatoki, O. S. Olatunji, M. O. Akharame, I. S. Human
Summary: This study investigated the partitioning behavior of PFOA and PFOS in sediment samples from river systems. The results showed that the sediments had high sorption capacities for PFOA and PFOS, with the sorption increasing over time. Lower pH values and increasing ionic strength favored the sorption and partitioning of PFAS onto sediments in aqueous solution. This study provides important data and scientific knowledge for understanding the fate and sorption of PFAS in aquatic systems.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Environmental Sciences
Chao Yin, Chang-Gui Pan, Shao-Ke Xiao, Qi Wu, Hong-Ming Tan, Kefu Yu
Summary: This study investigated the sorption, sorption isotherms, and desorption behaviors of legacy and emerging PFASs onto marine sediments at different salinities. The results showed that the adsorption of PFASs onto sediment was influenced by compound and solution-specific parameters, and salinity had a significant impact on the fate of PFASs in aquatic environments.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Jonathan E. Strivens, Li-Jung Kuo, Yina Liu, Kimberly L. Noor
Summary: The study provides a spatial and temporal analysis of PFAS distribution in Puget Sound, highlighting their impact on biologically active layers and potential risks to benthic communities.
MARINE POLLUTION BULLETIN
(2021)
Article
Chemistry, Multidisciplinary
Jorge Cardenas, Ruben Gavino, Erendira Garcia-Rios, Lucero Rios-Ruiz, Ana C. Puello-Cruz, Francisco Neptali Morales-Serna, Samuel Gomez, Adolfo Lopez-Torres, Jose Antonio Morales-Serna
Summary: The palladium-catalysed reaction of aryl halides and allylic alcohols is an important method for obtaining alpha, beta-unsaturated aldehydes and ketones. A 1,2,3-triazol-5-ylidene (aNHC)-based palladium(ii) complex formed in situ has been found to be a selective catalyst with yields ranging from 50% to 90%. The lack of toxic effects of the ligand precursor on the harpacticoid copepod Amphiascoides atopus allows for a comparison of catalytic efficiency with the potential impact of waste chemicals on global aquatic ecosystems.
Article
Environmental Sciences
Hugo Campos-Pereira, Dan B. Kleja, Lutz Ahrens, Anja Enell, Johannes Kikuchi, Michael Pettersson, Jon Petter Gustafsson
Summary: The study investigated the pH-dependent soil-water partitioning of six perfluoroalkyl substances (PFASs) in 11 temperate mineral soils and found that PFAS sorption was positively related to perfluorocarbon chain length and inversely related to solution pH. Organic carbon alone was a poor predictor of PFAS partitioning, and additional factors such as Fe/Al (hydr) oxides and soil texture (silt + clay) played a role. A model based on soil organic matter charge underestimated PFAS sorption. This research highlights the need for further understanding of PFAS behavior and impact in soils.
Article
Environmental Sciences
Pauline Adriaanse, Maarten C. Braakhekke, Wim H. J. Beltman, Steven J. H. Crum
Summary: This article describes the application of the TOXSWA model in predicting pesticide behavior in edge-of-field waterbodies and evaluates the model's performance through comparison with field experiment data. The results show poor agreement between simulated and observed concentrations, mainly due to the lack of site-specific input parameters. By optimizing the model and calibrating the coefficients for volatilization and sorption to sediment, substantial improvement in the agreement is achieved.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
M. L. Brusseau, B. Guo
Summary: This research focused on the relationship between soil porewater concentrations and soil concentrations of PFAS, based on a comprehensive model. The model was validated using measured parameters and literature data, showing accurate predictions of concentration ratios. Numerical simulations demonstrated the importance of air-water interfacial adsorption for the distribution of longer-chain PFAS. It was found that PFAS soil porewater concentrations can vary from ng/L to mg/L depending on soil concentrations and site conditions.
Article
Engineering, Marine
Radel Sultanbekov, Shamil Islamov, Dmitry Mardashov, Ilia Beloglazov, Tor Hemmingsen
Summary: The article presents a laboratory method for determining compatibility and stability of marine residual fuels to reduce sediment formation, providing quantitative characteristics of sediment activity during mixing. The study identified the influence of n-paraffins and asphaltenes on sedimentation activity, and developed a nomogram based on experimental data for practical use. The research results allow for determination of incompatibility and preservation of fuel quality.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Marine
Yi Shan, Xing Wang, Jie Cui, Haihong Mo, Yadong Li
Summary: This study investigated the mineral composition of marine clay and produced artificial marine clay with different mineral contents. It was found that clay with high montmorillonite content exhibited slower strain development, slower pore water pressure growth, more rounded hysteresis curves, greater stiffness, and more prolonged viscous energy growth.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Environmental Sciences
Samuel Krebsbach, Jianzhou He, Sushil Adhikari, Yaniv Olshansky, Farshad Feyzbar, Leonard C. Davis, Tae-Sik Oh, Dengjun Wang
Summary: Biochar is a cost-effective solution for removing per- and polyfluoroalkyl substances (PFAS) from water, but the specific physicochemical properties of biochars that determine their PFAS removal remain unknown. In this study, 15 biochars were produced from five feedstocks at three pyrolysis temperatures to investigate their removal efficiency of perfluorooctane sulfonate (PFOS), a type of PFAS, from water. It was found that biochar pore diameter was the most critical factor for PFOS removal, but other factors such as pore diameter/pore volume ratio, specific surface area, pyrolysis temperature, hydrophobicity, and elemental composition also played roles. Biochars with small pore diameter, low nitrogen content, and high pyrolysis temperature showed enhanced PFOS sorption. These findings contribute to the understanding of using biochars with optimized properties to remove PFAS compounds from water.
Article
Environmental Sciences
Atefeh Zendehboudi, Azam Mohammadi, Sina Dobaradaran, Gabriel E. De-la-Torre, Bahman Ramavandi, Seyed Enayat Hashemi, Reza Saeedi, Emran Moradpour Tayebi, Ahmad Vafaee, Amirhossein Darabi
Summary: This study investigated the characteristics and ecological risks of microplastics (MPs) in ballast water for the first time, and found high levels of MP pollution. These findings contribute to our understanding of the sources and risks of microplastics in marine ecosystems.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Rose Boahemaa Pinto, Linda Bogerd, Martine van der Ploeg, Kwame Duah, Remko Uijlenhoet, Tim H. M. van Emmerik
Summary: Catchment-scale plastic pollution assessments provide insights into the sources, sinks, and pathways of plastic pollution. We propose an approach to quantify macroplastic transport and density in the Odaw catchment, Ghana, and find that the urban riverine zone has the highest transport, while the urban tidal zone has the highest riverbank and land macroplastic density.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Aliya Baidourela, Qian Sun, Gongxin Yang, Umut Halik, Zhongkai Dong, Kaixu Cai, Guili Sun, Wenya Zhang, Sisi Cheng
Summary: The study focused on heavy metal pollution in the green vegetation of a suburban industrial area in Tuokexun County, Xinjiang, China. The results showed that the overall level of heavy metal pollution in the soil was minor, with mercury (Hg) being the most severe contamination, likely caused by human activities. The composition of heavy metal elements in trees was more stable compared to grass and shrubs, with varying concentrations across different vegetation. Shrubbery was found to be the most effective in heavy metal restoration, and there were disparities in heavy metal enrichment among different vegetation types.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
James H. Bridson, Hayden Masterton, Beatrix Theobald, Regis Risani, Fraser Doake, Jessica A. Wallbank, Stefan D. M. Maday, Gavin Lear, Robert Abbel, Dawn A. Smith, Joanne M. Kingsbury, Olga Pantos, Grant L. Northcott, Sally Gaw
Summary: Plastic pollution has significant environmental impacts, largely due to chemical additives. However, the behavior of plastic additives in marine environments is not well understood. A marine deployment experiment was conducted to investigate the effects of weathering on the extractables profile of four types of plastics in New Zealand over a period of nine months. The concentration of additives in polyethylene and oxo-degradable polyethylene was strongly influenced by artificial weathering, while polyamide 6 and polyethylene terephthalate showed minimal change. These findings emphasize the importance of considering leaching and weathering effects on plastic composition when assessing the potential impact and risk of plastic pollution in receiving environments.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Alan G. Scarlett, Francis D. Spilsbury, Steven J. Rowland, Marthe Monique Gagnon, Kliti Grice
Summary: This study used diamondoid hydrocarbon distributions to identify the sources of environmental oil contamination. A suite of 20 diamondoids was found to accumulate in fish adipose tissue. The scatter plots of indices between fish and exposure oils showed a close to ideal 1:1 relationship, which can be used to determine the origin of the oil.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Shan Jiang, Mengmeng Wan, Kun Lin, Yanshan Chen, Rui Wang, Liju Tan, Jiangtao Wang
Summary: In this study, the concentration, composition, distribution, and sources of PCBs in surface seawater of the Bohai Bay were analyzed. The results showed that PCBs in the Bohai Bay had high concentrations and were primarily derived from land-based sources such as port activities and river inputs. The PCBs in the Bohai Bay may come from commercial PCBs and their incineration products, municipal landfills, wood and coal combustion, and industrial activities, etc.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Icaro S. A. Porto, Saulo V. A. Dantas, Caio S. A. Felix, Francisco A. S. Cunha, Jailson B. de Andrade, Sergio L. C. Ferreira
Summary: This study evaluated the risks of mercury levels in sardines consumed by low-income population in Salvador, Brazil. The results showed that the mercury content in the sampled sardines posed no risks to human health. This study is significant as most sardines in Salvador come from Todos os Santos Bay, which has a history of mercury contamination.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Jiahui Chen, Chengyu Yuan, Guanqun Zhai, Guangcheng Chen, Heng Zhu, Jun Liu, Yong Ye
Summary: This study investigated the combined influences of species selection and site elevation on greenhouse gas fluxes from restored mangrove soils. The results suggest that Avicennia marina should be selected for mangrove restoration to minimize carbon release and reduce the influence of greenhouse gas fluxes on the global greenhouse effect.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Emmanuel Onyeabor, Uju Obuka
Summary: The Gulf of Guinea region in Africa is a significant area for coastal countries, playing a vital role in their economic and environmental development. This study aims to reduce marine plastic pollution in the region by utilizing legal instruments.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Yuanli Liu, Stephan Luttjohann, Alvise Vianello, Claudia Lorenz, Fan Liu, Jes Vollertsen
Summary: Large area attenuated total reflectance-Fourier transform infrared spectroscopy (LAATR-FTIR) is a novel technique for detecting small microplastics, with limited accuracy for large microplastics. However, it shows promise in homogeneous matrices. The spectra quality is comparable between transmission mode and LAATR mode.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Phuc T. D. Le, Andrew M. Fischer, Britta D. Hardesty, Heidi J. Auman, Chris Wilcox
Summary: This study explores the relationship between ocean currents and the accumulation of floating marine debris (FMD) and finds that higher concentrations of FMD are associated with frontal frequencies (FF). FMD is primarily trapped in accumulation zones between fronts and the coastline, which have high biodiversity value.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Rosa Sawan, Perine Doyen, Florence Viudes, Rachid Amara, Celine Mahfouz
Summary: Few studies have examined the impact of urbanization and meteorological events on microplastics discharged into the sea through rivers. Surface water samples were collected from two Lebanese rivers, with differing degrees of urbanization, during dry and wet periods. The results showed that the most industrialized river had a significantly higher abundance of microplastics compared to the less-industrialized river. There was also a correlation between particle contamination and the season at each site, with microplastic concentrations highest on the first day of the wet season. These findings highlight the importance of considering meteorological events in accurately assessing plastic pollution influx into coastal waters.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Katherine R. Shaw, Jonathan L. Whitney, Eileen M. Nalley, Madeline C. Schmidbauer, Megan J. Donahue, Jesse Black, Raquel N. Corniuk, Kellie Teague, Rachel Sandquist, Catherine Pirkle, Rachel Dacks, Max Sudnovsky, Jennifer M. Lynch
Summary: This study examines the ingestion of plastic in reef fish in the Republic of the Marshall Islands. Plastic particles were found in the gastrointestinal tracts of multiple fish species. However, further analysis revealed that these particles were actually natural materials and posed no threat to human consumers.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Revati Hardikar, C. K. Haridevi, Shantaj Deshbhratar
Summary: This study investigated the variability in phytoplankton functional structure using a trait-based approach and explored the relationship between species traits and environmental factors, as well as their impact on ecosystem functioning. The results revealed that morphological traits, temperature, and ammonia played a decisive role in the seasonal succession of phytoplankton species. It was found that certain traits favored higher biomass production but might hinder energy transfer efficiency. The strong correlation between environmental variables and phytoplankton functional structure supports the practical implementation of a trait-based approach in studying phytoplankton community dynamics under different environmental conditions.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Engki A. Kisnarti, Nining Sari Ningsih, Mutiara R. Putri, Nani Hendiarti, Bernhard Mayer
Summary: This study examines the movement patterns of plastic marine debris in Indonesian waters, revealing that Indonesia contributes significantly to transboundary marine debris in the Pacific Ocean, Indian Ocean, and the South China Sea. Most of the debris remains in Indonesian waters and moves back and forth due to the influence of monsoon currents.
MARINE POLLUTION BULLETIN
(2024)