Comparative impact analysis of nitrate reduction by typical components of natural organic compounds in magnetite-bearing riparian zones
As the key interface, the nitrate removal capacity of riparian zones is receiving close attention. Although naturally occurring organic compounds in this environment play a pivotal role in shaping microbial communities and influencing the nitrate removal capacity, the relevant research is inadequate...
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Elsevier
2024-11-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651324013745 |
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| author | Jia Niu Yuyu Wan Zhe Ma Weihong Dong Xiaosi Su Yuanzheng Zhai Xiaofang Shen Xiaokun Yi |
| author_facet | Jia Niu Yuyu Wan Zhe Ma Weihong Dong Xiaosi Su Yuanzheng Zhai Xiaofang Shen Xiaokun Yi |
| author_sort | Jia Niu |
| collection | DOAJ |
| description | As the key interface, the nitrate removal capacity of riparian zones is receiving close attention. Although naturally occurring organic compounds in this environment play a pivotal role in shaping microbial communities and influencing the nitrate removal capacity, the relevant research is inadequate. Given the complexity of riparian environments, in this study, we added representative natural organic matter (fulvic acid, butyric acid, naphthalene, starch, and sodium bicarbonate) as carbon conditions and incorporated magnetite to simulate riparian zone components. The study investigated the nitrate degradation efficiency and microbial responses under different natural carbon conditions in real iron-containing environments. Butyric acid exhibited the most efficient nitrate reduction, followed in descending order by naphthalene, starch, sodium bicarbonate, and humic acid. However, this did not imply that butyric acid efficiently removed nitrogen; instead, the nitrogen would circulate in the environment in the form of ammonium. Denitrification and DNRA were the primary drivers of nitrate reduction in each system, while naphthalene and humic acid systems also exhibited nitrification and mineralization. Nitrogen-fixing bacteria represent a unique microbial community in the butyrate system. Further, the synergistic degradation of naphthalene and nitrate demonstrated significant potential applications. High-throughput sequencing revealed that carbon conditions exerted selective pressure on microorganisms, driving Fe (Ⅱ)/Fe (Ⅲ) transformation by shaping the microbial community structure and influencing the nitrogen cycling process. |
| format | Article |
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| institution | Kabale University |
| issn | 0147-6513 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
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| series | Ecotoxicology and Environmental Safety |
| spelling | doaj-art-75bfeb1c7fff478e828a336f8678dbba2024-11-21T06:02:07ZengElsevierEcotoxicology and Environmental Safety0147-65132024-11-01287117298Comparative impact analysis of nitrate reduction by typical components of natural organic compounds in magnetite-bearing riparian zonesJia Niu0Yuyu Wan1Zhe Ma2Weihong Dong3Xiaosi Su4Yuanzheng Zhai5Xiaofang Shen6Xiaokun Yi7Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of ChinaKey Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of China; Corresponding author.Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of ChinaKey Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of ChinaKey Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of ChinaCollege of Water Sciences, Beijing Normal University, Beijing 100875, ChinaKey Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of ChinaKey Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of ChinaAs the key interface, the nitrate removal capacity of riparian zones is receiving close attention. Although naturally occurring organic compounds in this environment play a pivotal role in shaping microbial communities and influencing the nitrate removal capacity, the relevant research is inadequate. Given the complexity of riparian environments, in this study, we added representative natural organic matter (fulvic acid, butyric acid, naphthalene, starch, and sodium bicarbonate) as carbon conditions and incorporated magnetite to simulate riparian zone components. The study investigated the nitrate degradation efficiency and microbial responses under different natural carbon conditions in real iron-containing environments. Butyric acid exhibited the most efficient nitrate reduction, followed in descending order by naphthalene, starch, sodium bicarbonate, and humic acid. However, this did not imply that butyric acid efficiently removed nitrogen; instead, the nitrogen would circulate in the environment in the form of ammonium. Denitrification and DNRA were the primary drivers of nitrate reduction in each system, while naphthalene and humic acid systems also exhibited nitrification and mineralization. Nitrogen-fixing bacteria represent a unique microbial community in the butyrate system. Further, the synergistic degradation of naphthalene and nitrate demonstrated significant potential applications. High-throughput sequencing revealed that carbon conditions exerted selective pressure on microorganisms, driving Fe (Ⅱ)/Fe (Ⅲ) transformation by shaping the microbial community structure and influencing the nitrogen cycling process.http://www.sciencedirect.com/science/article/pii/S0147651324013745CarbonNitrate reductionMagnetiteMicrobial community |
| spellingShingle | Jia Niu Yuyu Wan Zhe Ma Weihong Dong Xiaosi Su Yuanzheng Zhai Xiaofang Shen Xiaokun Yi Comparative impact analysis of nitrate reduction by typical components of natural organic compounds in magnetite-bearing riparian zones Ecotoxicology and Environmental Safety Carbon Nitrate reduction Magnetite Microbial community |
| title | Comparative impact analysis of nitrate reduction by typical components of natural organic compounds in magnetite-bearing riparian zones |
| title_full | Comparative impact analysis of nitrate reduction by typical components of natural organic compounds in magnetite-bearing riparian zones |
| title_fullStr | Comparative impact analysis of nitrate reduction by typical components of natural organic compounds in magnetite-bearing riparian zones |
| title_full_unstemmed | Comparative impact analysis of nitrate reduction by typical components of natural organic compounds in magnetite-bearing riparian zones |
| title_short | Comparative impact analysis of nitrate reduction by typical components of natural organic compounds in magnetite-bearing riparian zones |
| title_sort | comparative impact analysis of nitrate reduction by typical components of natural organic compounds in magnetite bearing riparian zones |
| topic | Carbon Nitrate reduction Magnetite Microbial community |
| url | http://www.sciencedirect.com/science/article/pii/S0147651324013745 |
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