Article
Environmental Sciences
Zewei Guo, Wei Ouyang, Tulcan Roberto Xavier Supe, Chunye Lin, Mengchang He, Baodong Wang
Summary: Herbicides are common pollutants in estuaries worldwide, and their partition characteristics are complex due to the distribution of water and sediment in sediment-laden river estuaries. Studying these partition traits helps to understand the multi-interface transport processes.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
T. T. Huynh, J. Kim, W. Kim, J. Hur, Q. N. Ho, Q. Bi, T. V. Bui, J. J. Kim, S. D. Lee, Y. Y. Choi, B. J. Lee
Summary: This study investigated the dynamics of suspended particulate matter (SPM) and associated processes in a river under different weather conditions and hydraulic structures. The findings showed that the presence of biopolymers and flocculation potential in the water promoted SPM deposition and high-concentration sediment layer formation during the pre-flood period. However, the turbulent flow conditions during the post-flood period disrupted the deposition and resulted in a more homogeneous turbidity profile.
WATER RESOURCES RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
A. M. Bernabeu, A. V. Lersundi-Kanpistegi, D. Rey
Summary: In this study, the dynamics of sediment particulate matter (SPM) in the Rias Baixas system were analyzed, focusing on the poorly understood inner sector of a ria. Measurements of current, turbidity, temperature, and salinity were taken during a specific period in the Ria de Muros-Noia. The mooring data revealed different subtidal processes, including upwelling, relaxation periods, and downwelling, which were found to control the bottom turbidity dynamics in the inner sector. The study also found that SPM of fluvial origin was transferred to the bottom under downwelling conditions, while oceanic water under upwelling conditions showed lower turbidity values.
Article
Geosciences, Multidisciplinary
Yao Wang, Lei Gao
Summary: This study conducted a cruise in the Changjiang River Estuary and adjacent shelf area to investigate the sources and dynamics of suspended particulate matter (SPM) by deploying instruments to study the SPM variations in different size classes and to elucidate the contributions of terrestrial sediments, biological particles, and flocculation. The results showed that the water columns in inner stations and lower-depth waters in outer stations were dominated by terrestrial SPM with smaller sizes, while the upper depth waters in outer stations were occupied by autochthonous and biological SPM with larger sizes, often showing maximum values in subsurface layers and associated with fluorescence. Stations near the river mouth and estuarine salinity front also likely experienced flocculation with larger sizes of SPM.
JOURNAL OF MARINE SYSTEMS
(2022)
Article
Engineering, Environmental
Ningning Ji, Yong Liu, Shengrui Wang, Zhihao Wu, Hong Li
Summary: This study examines phosphorus transport and redistribution in a river-lake system in the Lake Erhai basin. The findings suggest that suspended particulate matter (SPM) plays an important role in mediating phosphorus cycling in aquatic ecosystems. Especially, phytoplankton-SPM can buffer phosphate-limitation during algal blooms.
Article
Engineering, Environmental
Cheng Liu, Yiheng Du, Jicheng Zhong, Lei Zhang, Wei Huang, Chao Han, Kaining Chen, Xiaozhi Gu
Summary: This study reveals the differentiated processes controlling internal phosphorus release in different areas of shallow eutrophic lakes. In the algae-dominated area, organic phosphorus control intensifies with the deterioration of algal blooms, while in the macrophyte-dominated area, phosphorus release is mostly influenced by the coupled cycling of iron, sulfur, and phosphorus.
Article
Environmental Sciences
Wenwen Wang, Junyi Chen, Shuhang Wang, Wei Li
Summary: This study compares the properties and sources of SOM and SPOM in Hulun Lake, a typical lake in the cold and arid region of China. The results show that the content of SOM and SPOM is higher in the northern and western regions of the lake, and that SOM and SPOM mainly originate from terrestrial sources, closely related to climate change.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
E. Koltovskaya, I. A. Nemirovskaya
Summary: This study investigated the distribution and flux magnitude of suspended particulate matter (SPM) in the Kara and Laptev Seas. The composition of SPM was analyzed, revealing a predominance of allochthonous material. The findings contribute to our understanding of SPM dynamics in these regions.
Article
Environmental Sciences
Ruei-Feng Shiu, Hui-Ju Lee, Hung-Te Hsu, Gwo-Ching Gong
Summary: This study investigated the distribution and partitioning of PFASs in a urban river-coastal system, focusing on their concentrations in water, SPM, and sediments. Results showed that the total concentrations of PFASs varied in different phases, with a decrease in water and SPM with increasing salinity. This study also provided evidence for the accumulation of PFASs on SPM through the presence of transparent exopolymer particles (TEPs).
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Z. Safar, C. Chassagne, S. Rijnsburger, M. Ibanez Sanz, A. J. Manning, A. J. Souza, T. van Kessel, A. Horner-Devine, R. Flores, M. McKeon, J. D. Pietrzak
Summary: This study conducted a survey using different monitoring techniques in the Rhine-ROFI region to classify and characterize suspended particles. The results showed the presence of highly anisotropic particles leading to multiple peaks in the particle size distributions. By combining different techniques, meaningful particle size distributions and size information were obtained.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Natalia A. Belkina, Natalia V. Kulik, Natalia A. Efremenko, Maxim S. Potakhin, Vyacheslav I. Kukharev, Aleksandr V. Ryabinkin, Roman E. Zdorovennov, Andrey P. Georgiev, Vera D. Strakhovenko, Ekaterina V. Gatalskaya, Irina Yu. Kravchenko, Anna V. Ludikova, Dmitry A. Subetto
Summary: The spatio-temporal variability of sedimentation process in Lake Onego, the second largest lake in Europe, was evaluated and the chemical composition of the lake water was studied. It was demonstrated that the sedimentation process in the lake is non-uniform, with different regions of the lake having different sedimentation rates. The composition of the deposited material suggests a humus-Fe-Si type of sedimentation, which is influenced by natural factors and unevenly distributed anthropogenic pressure.
Article
Environmental Sciences
Chao Guo, Leicheng Guo, Sarah Bass, Andrew J. Manning, Zhongwu Jin, Yinjun Zhou
Summary: The effects of different types of organic matter on fine sediment flocculation were investigated through laboratory tank experiments. Results demonstrated that the introduction of organic polymers (such as xanthan gum and guar gum) significantly enhanced flocculation, while the addition of humic acid had minimal influence. The nonionic polymer guar gum showed greater efficacy in promoting larger and more fractal flocs compared to the anionic polymer, xanthan gum. Non-linear trends were observed in the evolution of floc size and structure with increasing ratios of organic polymer concentration to kaolinite concentration.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Ecology
Anne-Sophie Fabris, Pierre Larouche, Jean-Carlos Montero-Serrano
Summary: This study characterized the particle size distribution of suspended particulate matter in the St. Lawrence Estuary, revealing significant variations between different seasons and regions. Coarse particles were found to play a key role in sedimentation in the Lower Estuary, with higher particle density during ice-covered conditions. The mineralogical and elemental composition of suspended detrital particles showed similarity throughout the estuary, indicating common sources.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Maksymilian Ciesla, Renata Gruca-Rokosz, Lilianna Bartoszek
Summary: Having a comprehensive understanding of the process by which suspended sediment in water is aggregated and deposited is crucial for the proper management and use of storage reservoirs. This study investigated the varied granulometric composition of accumulated sediment and examined the amounts and origins of organic matter. The results showed that the aggregation of sediment is not only dependent on the amount of organic matter but also its origin, with greater production of autochthonous organic matter intensifying the process of suspended sediment flocculation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
V. Suneel, S. Sathish Kumar, R. Balaji, P. Vethamony
Summary: The addition of sediments increased the size of OSAs and resulted in higher depletion of n-alkanes compared to PAHs. The highest depletion of both n-alkanes and PAHs occurred in OSAs of 10-hour continuous mixing. Moreover, the concentration of PAHs in all 36 OSAs exceeded 5000 ng/g, indicating very high pollution levels.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
R. Adriaens, E. Zeelmaekers, M. Fettweis, E. Vanlierde, J. Vanlede, P. Stassen, J. Elsen, J. Srodon, N. Vandenberghe
Article
Engineering, Civil
Xiaoteng Shen, Erik A. Toorman, Byung Joon Lee, Michael Fettweis
JOURNAL OF HYDROLOGY
(2018)
Article
Oceanography
Marion Chapalain, Romaric Verney, Michael Fettweis, Matthias Jacquet, David Le Berre, Pierre Le Hir
Editorial Material
Oceanography
Erik A. Toorman, Michael Fettweis, Joris Vanlede
Article
Oceanography
Xiaoteng Shen, Erik A. Toorman, Byung Joon Lee, Michael Fettweis
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2019)
Article
Engineering, Civil
Xiaoteng Shen, Erik A. Toorman, Michael Fettweis, Byung Joon Lee, Qing He
COASTAL ENGINEERING
(2019)
Article
Oceanography
Joris Vanlede, Arvid Dujardin, Michael Fettweis, Thomas Van Hoestenberghe, Chantal Martens
Article
Environmental Sciences
B. J. Lee, J. Kim, J. Hur, I. H. Choi, E. A. Toorman, M. Fettweis, J. W. Choi
WATER RESOURCES RESEARCH
(2019)
Article
Oceanography
Michael Fettweis, Rolf Riethmueller, Romaric Verney, Marius Becker, Joan Backers, Matthias Baeye, Marion Chapalain, Styn Claeys, Jan Claus, Tom Cox, Julien Deloffre, Davy Depreiter, Flavie Druine, Goetz Floeser, Steffen Gruenler, Frederic Jourdin, Robert Lafite, Janine Nauw, Bouchra Nechad, Ruediger Roettgers, Aldo Sottolichio, Tom Van Engeland, Wim Vanhaverbeke, Hans Vereecken
PROGRESS IN OCEANOGRAPHY
(2019)
Article
Geosciences, Multidisciplinary
D. S. van Maren, J. Vroom, M. Fettweis, J. Vanlede
Article
Environmental Sciences
Michael Fettweis, Markus Schartau, Xavier Desmit, Byung Joon Lee, Nathan Terseleer, Dimitry Van der Zande, Koen Parmentier, Rolf Riethmueller
Summary: The seasonal variation in concentration of transparent exopolymer particles (TEPs), particulate organic carbon (POC), and particulate organic nitrogen (PON) was studied in the Southern Bight of the North Sea. The study found that biophysical flocculation cannot be explained solely by these parameters and it requires the distinction between a more reactive labile fraction and a less reactive refractory fraction.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Review
Engineering, Environmental
Que Nguyen Ho, Michael Fettweis, Kate L. Spencer, Byung Joon Lee
Summary: Flocculation is a critical process for controlling the fate and transport of suspended particulate matter (SPM) in water environments. However, the lack of comprehensive research on the composition and structure of flocs has led to misconceptions about the dynamics of SPM. This review summarizes the current understanding of the heterogeneous composition of flocs and discusses the effects of human activities on floc composition.
Article
Engineering, Environmental
Que Nguyen Ho, Michael Fettweis, Jin Hur, Xavier Desmit, Jae In Kim, Dae Won Jung, Sang Deuk Lee, Sungyun Lee, Yun Young Choi, Byung Joon Lee
Summary: Interactions between microalgae and clay minerals can enhance biologically mediated flocculation, affecting the sedimentation and transportation of suspended particulate matter. Adequate amounts of biopolymers produced by microalgal cells enhance floc-to-floc attachment and flocculation kinetics, while excessive amounts of biopolymers and humic substances increase particle stabilization.
Article
Oceanography
Yuliang Zhu, Mingze Lin, Xiaoteng Shen, Michael Fettweis, Ying Zhang, Jinfeng Zhang, Qilong Bi, Zi Wu
Summary: This study investigates the impact of microalgae on suspended fine-grained sediments through laboratory experiments and modeling. The results demonstrate that the shear rate plays a dominant role in the aggregation process, and the presence of microalgae enhances the aggregation. Different algal species and concentrations have a significant influence on the size distribution and average size of the aggregates. The developed model effectively simulates the aggregates and has the potential to track the properties of microalgae-associated sediment flocs.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Engineering, Environmental
Xiaoteng Shen, Hong Huo, Ying Zhang, Yuliang Zhu, Michael Fettweis, Qilong Bi, Byung Joon Lee, Jerome P. -Y. Maa, Qiqing Chen
Summary: This study examines the effects of different organic matter on the flocculation of anthropogenic microplastics and finds that cationic and neutral organic matter have a more significant promoting effect on the growth of microplastic flocs.