Quantitative examination of microstructural transformations of clay-rich sediments in river-dominated deltas under the influence of polluted pore water
Coastal water pollution has a significant impact on sedimentary environments, altering the microstructure of clay-rich sediments and further destabilizing river-dominated delta strata. However, the understanding of the microstructure of clay sediment, influenced by burial depth and pore water chemis...
Published in: | Environmental Pollution |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
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Elsevier BV
2023
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Subjects: | |
Online Access: | http://hdl.handle.net/10754/693001 https://doi.org/10.1016/j.envpol.2023.122177 |
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ftkingabdullahun:oai:repository.kaust.edu.sa:10754/693001 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
King Abdullah University of Science and Technology: KAUST Repository |
op_collection_id |
ftkingabdullahun |
language |
unknown |
topic |
Sediment Anisotropy DELTA Clay Coastal Protection |
spellingShingle |
Sediment Anisotropy DELTA Clay Coastal Protection Ma, Xiong-Ying Liu, Zhan Xia, Zhao Su, Chen-Xi Cheng, Yin Yu, Hao Kang, Xin Quantitative examination of microstructural transformations of clay-rich sediments in river-dominated deltas under the influence of polluted pore water |
topic_facet |
Sediment Anisotropy DELTA Clay Coastal Protection |
description |
Coastal water pollution has a significant impact on sedimentary environments, altering the microstructure of clay-rich sediments and further destabilizing river-dominated delta strata. However, the understanding of the microstructure of clay sediment, influenced by burial depth and pore water chemistry, remains limited due to challenges in quantitatively analyzing clay texture at varying depths. The perturbable of clay microstructures, and the cost of deep sampling have hindered such efforts. To address this issue, this study aims to quantitatively analyze the clay anisotropy at different depths and pore water chemistry through laboratory-simulated sediment samples by using centrifugal modeling and 2DXRD technology. The results suggest that 1DXRD (Orientation index) is prone to generating incorrect conclusions, whereas 2DXRD (pole density) yields more precise and reliable results. Specifically, the results indicated that the introduction of salt ions promoted clay precipitation and stabilized the oriented microstructure at shallower depths. In acidic solutions, clay sediment still contained a certain proportion of edge to face (EF) microstructure at depths less than 6 m, suggesting higher soil thixotropy and lower strength than that of clay sediments in other types of solutions. Overall, our findings provide valuable insights into the relationship between water pollution, delta disappearance, and ocean acidification, highlighting the urgent need for effective environmental management strategies to prevent further damage to fragile coastal ecosystems. This study was supported by the National Natural Science Foundation of China (No. 51809129) and Basic Scientific Research Business Foundation of Central Public Welfare Scientifc Research Institutes (No. 20227501). |
author2 |
Energy Resources and Petroleum Engineering Program Physical Science and Engineering (PSE) Division Earth Science and Engineering Program College of Civil Engineering, Hunan University, Changsha, China. CCFEB Civil Engineering Co., Ltd., Changsha, 410004, China. Engineering Technology and Materials Research Center, China Academy of Transportation Sciences, Beijing, China. |
format |
Article in Journal/Newspaper |
author |
Ma, Xiong-Ying Liu, Zhan Xia, Zhao Su, Chen-Xi Cheng, Yin Yu, Hao Kang, Xin |
author_facet |
Ma, Xiong-Ying Liu, Zhan Xia, Zhao Su, Chen-Xi Cheng, Yin Yu, Hao Kang, Xin |
author_sort |
Ma, Xiong-Ying |
title |
Quantitative examination of microstructural transformations of clay-rich sediments in river-dominated deltas under the influence of polluted pore water |
title_short |
Quantitative examination of microstructural transformations of clay-rich sediments in river-dominated deltas under the influence of polluted pore water |
title_full |
Quantitative examination of microstructural transformations of clay-rich sediments in river-dominated deltas under the influence of polluted pore water |
title_fullStr |
Quantitative examination of microstructural transformations of clay-rich sediments in river-dominated deltas under the influence of polluted pore water |
title_full_unstemmed |
Quantitative examination of microstructural transformations of clay-rich sediments in river-dominated deltas under the influence of polluted pore water |
title_sort |
quantitative examination of microstructural transformations of clay-rich sediments in river-dominated deltas under the influence of polluted pore water |
publisher |
Elsevier BV |
publishDate |
2023 |
url |
http://hdl.handle.net/10754/693001 https://doi.org/10.1016/j.envpol.2023.122177 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://linkinghub.elsevier.com/retrieve/pii/S026974912301179X Ma, X.-Y., Liu, Z., Xia, Z., Su, C.-X., Cheng, Y., Yu, H., & Kang, X. (2023). Quantitative examination of microstructural transformations of clay-rich sediments in river-dominated deltas under the influence of polluted pore water. Environmental Pollution, 334, 122177. https://doi.org/10.1016/j.envpol.2023.122177 doi:10.1016/j.envpol.2023.122177 0269-7491 Environmental pollution (Barking, Essex : 1987) 122177 37453684 http://hdl.handle.net/10754/693001 334 |
op_rights |
NOTICE: this is the author’s version of a work that was accepted for publication in Environmental pollution (Barking, Essex : 1987). Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Environmental pollution (Barking, Essex : 1987), [334, , (2023-07-14)] DOI:10.1016/j.envpol.2023.122177 . © 2023. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ 2025-07-14 |
op_doi |
https://doi.org/10.1016/j.envpol.2023.122177 |
container_title |
Environmental Pollution |
container_volume |
334 |
container_start_page |
122177 |
_version_ |
1787427362141372416 |
spelling |
ftkingabdullahun:oai:repository.kaust.edu.sa:10754/693001 2024-01-07T09:45:45+01:00 Quantitative examination of microstructural transformations of clay-rich sediments in river-dominated deltas under the influence of polluted pore water Ma, Xiong-Ying Liu, Zhan Xia, Zhao Su, Chen-Xi Cheng, Yin Yu, Hao Kang, Xin Energy Resources and Petroleum Engineering Program Physical Science and Engineering (PSE) Division Earth Science and Engineering Program College of Civil Engineering, Hunan University, Changsha, China. CCFEB Civil Engineering Co., Ltd., Changsha, 410004, China. Engineering Technology and Materials Research Center, China Academy of Transportation Sciences, Beijing, China. 2023-07-14 http://hdl.handle.net/10754/693001 https://doi.org/10.1016/j.envpol.2023.122177 unknown Elsevier BV https://linkinghub.elsevier.com/retrieve/pii/S026974912301179X Ma, X.-Y., Liu, Z., Xia, Z., Su, C.-X., Cheng, Y., Yu, H., & Kang, X. (2023). Quantitative examination of microstructural transformations of clay-rich sediments in river-dominated deltas under the influence of polluted pore water. Environmental Pollution, 334, 122177. https://doi.org/10.1016/j.envpol.2023.122177 doi:10.1016/j.envpol.2023.122177 0269-7491 Environmental pollution (Barking, Essex : 1987) 122177 37453684 http://hdl.handle.net/10754/693001 334 NOTICE: this is the author’s version of a work that was accepted for publication in Environmental pollution (Barking, Essex : 1987). Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Environmental pollution (Barking, Essex : 1987), [334, , (2023-07-14)] DOI:10.1016/j.envpol.2023.122177 . © 2023. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ 2025-07-14 Sediment Anisotropy DELTA Clay Coastal Protection Article 2023 ftkingabdullahun https://doi.org/10.1016/j.envpol.2023.122177 2023-12-09T20:20:28Z Coastal water pollution has a significant impact on sedimentary environments, altering the microstructure of clay-rich sediments and further destabilizing river-dominated delta strata. However, the understanding of the microstructure of clay sediment, influenced by burial depth and pore water chemistry, remains limited due to challenges in quantitatively analyzing clay texture at varying depths. The perturbable of clay microstructures, and the cost of deep sampling have hindered such efforts. To address this issue, this study aims to quantitatively analyze the clay anisotropy at different depths and pore water chemistry through laboratory-simulated sediment samples by using centrifugal modeling and 2DXRD technology. The results suggest that 1DXRD (Orientation index) is prone to generating incorrect conclusions, whereas 2DXRD (pole density) yields more precise and reliable results. Specifically, the results indicated that the introduction of salt ions promoted clay precipitation and stabilized the oriented microstructure at shallower depths. In acidic solutions, clay sediment still contained a certain proportion of edge to face (EF) microstructure at depths less than 6 m, suggesting higher soil thixotropy and lower strength than that of clay sediments in other types of solutions. Overall, our findings provide valuable insights into the relationship between water pollution, delta disappearance, and ocean acidification, highlighting the urgent need for effective environmental management strategies to prevent further damage to fragile coastal ecosystems. This study was supported by the National Natural Science Foundation of China (No. 51809129) and Basic Scientific Research Business Foundation of Central Public Welfare Scientifc Research Institutes (No. 20227501). Article in Journal/Newspaper Ocean acidification King Abdullah University of Science and Technology: KAUST Repository Environmental Pollution 334 122177 |