Assessment of phosphorus pollution and phosphorus release mechanisms of sediment in the Tuojiang River, Southwest China
Study region: The study region was the Tuojiang River, a tributary of the upper Yangtze River. Study focus: Sediment phosphorus (P) release remains unclear in the Tuojiang River in Southwest China. The sediments were collected from the upper, middle, and lower reaches of the Tuojiang River in this s...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581823003221 |
| _version_ | 1797342189394591744 |
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| author | Dandan Liu Xueying Li Qi Qiao Lu Bai Zhibo Lu Yue Zhang Chaojun Lu |
| author_facet | Dandan Liu Xueying Li Qi Qiao Lu Bai Zhibo Lu Yue Zhang Chaojun Lu |
| author_sort | Dandan Liu |
| collection | DOAJ |
| description | Study region: The study region was the Tuojiang River, a tributary of the upper Yangtze River. Study focus: Sediment phosphorus (P) release remains unclear in the Tuojiang River in Southwest China. The sediments were collected from the upper, middle, and lower reaches of the Tuojiang River in this study. The potential of sediment P release (percentage saturation of zero equilibrium P concentration, EPCsat) was determined by isotherm experiments. The influential factors and mechanisms on sediment P release were explored. New hydrological insights for the region: The sediment mainly acted as a source to release P. Phosphorus bound by Fe oxides (Fe-P), organic matter (OM), water temperature (T), and the P content originally adsorbed on sediment (Q0) were the most influential factors on the EPCsat. The pH, T, or disturbance had the greatest effect on the content of exchangeable P (Ex-P), organic P (Org-P), and Fe-P. FeCl3 has an inhibitory effect on sediment P release. Fe-P mainly participates in the sediment P release process. The release kinetics were well fitted to the pseudo-second-order model. These results obtained could help to understanding the P pollution status of sediment, improve our knowledge of the sediment P release mechanisms and provide significant information for further management of P pollution in sediment. |
| first_indexed | 2024-03-08T10:29:41Z |
| format | Article |
| id | doaj.art-9c0edf2c888340699b21a2c5d5e56a90 |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-03-08T10:29:41Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-9c0edf2c888340699b21a2c5d5e56a902024-01-27T06:55:02ZengElsevierJournal of Hydrology: Regional Studies2214-58182024-02-0151101635Assessment of phosphorus pollution and phosphorus release mechanisms of sediment in the Tuojiang River, Southwest ChinaDandan Liu0Xueying Li1Qi Qiao2Lu Bai3Zhibo Lu4Yue Zhang5Chaojun Lu6State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; SEPA Key Laboratory of Eco-Industry, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; SEPA Key Laboratory of Eco-Industry, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; SEPA Key Laboratory of Eco-Industry, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; SEPA Key Laboratory of Eco-Industry, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaState Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; SEPA Key Laboratory of Eco-Industry, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Corresponding authors at: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; SEPA Key Laboratory of Eco-Industry, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Corresponding authors at: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.Study region: The study region was the Tuojiang River, a tributary of the upper Yangtze River. Study focus: Sediment phosphorus (P) release remains unclear in the Tuojiang River in Southwest China. The sediments were collected from the upper, middle, and lower reaches of the Tuojiang River in this study. The potential of sediment P release (percentage saturation of zero equilibrium P concentration, EPCsat) was determined by isotherm experiments. The influential factors and mechanisms on sediment P release were explored. New hydrological insights for the region: The sediment mainly acted as a source to release P. Phosphorus bound by Fe oxides (Fe-P), organic matter (OM), water temperature (T), and the P content originally adsorbed on sediment (Q0) were the most influential factors on the EPCsat. The pH, T, or disturbance had the greatest effect on the content of exchangeable P (Ex-P), organic P (Org-P), and Fe-P. FeCl3 has an inhibitory effect on sediment P release. Fe-P mainly participates in the sediment P release process. The release kinetics were well fitted to the pseudo-second-order model. These results obtained could help to understanding the P pollution status of sediment, improve our knowledge of the sediment P release mechanisms and provide significant information for further management of P pollution in sediment.http://www.sciencedirect.com/science/article/pii/S2214581823003221River sedimentsPhosphorus releasePhosphorus fractionEnvironmental conditionRelease kinetics |
| spellingShingle | Dandan Liu Xueying Li Qi Qiao Lu Bai Zhibo Lu Yue Zhang Chaojun Lu Assessment of phosphorus pollution and phosphorus release mechanisms of sediment in the Tuojiang River, Southwest China Journal of Hydrology: Regional Studies River sediments Phosphorus release Phosphorus fraction Environmental condition Release kinetics |
| title | Assessment of phosphorus pollution and phosphorus release mechanisms of sediment in the Tuojiang River, Southwest China |
| title_full | Assessment of phosphorus pollution and phosphorus release mechanisms of sediment in the Tuojiang River, Southwest China |
| title_fullStr | Assessment of phosphorus pollution and phosphorus release mechanisms of sediment in the Tuojiang River, Southwest China |
| title_full_unstemmed | Assessment of phosphorus pollution and phosphorus release mechanisms of sediment in the Tuojiang River, Southwest China |
| title_short | Assessment of phosphorus pollution and phosphorus release mechanisms of sediment in the Tuojiang River, Southwest China |
| title_sort | assessment of phosphorus pollution and phosphorus release mechanisms of sediment in the tuojiang river southwest china |
| topic | River sediments Phosphorus release Phosphorus fraction Environmental condition Release kinetics |
| url | http://www.sciencedirect.com/science/article/pii/S2214581823003221 |
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