Reactive Transport of NH<sub>4</sub><sup>+</sup> in the Hyporheic Zone from the Ground Water to the Surface Water
Nowadays, ammonia nitrogen (NH<sub>4</sub><sup>+</sup>) pollution gets more and more attention in drinking water sources. This study investigated the main behavior of biogeochemical NH<sub>4</sub><sup>+</sup> from groundwater to surface water in a hypo...
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MDPI AG
2022-04-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/8/1237 |
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| author | Ailan Yan Xianyan Guo Donghui Hu Xiaoyang Chen |
| author_facet | Ailan Yan Xianyan Guo Donghui Hu Xiaoyang Chen |
| author_sort | Ailan Yan |
| collection | DOAJ |
| description | Nowadays, ammonia nitrogen (NH<sub>4</sub><sup>+</sup>) pollution gets more and more attention in drinking water sources. This study investigated the main behavior of biogeochemical NH<sub>4</sub><sup>+</sup> from groundwater to surface water in a hyporheic zone (HZ) sediment from a reservoir. The experiments were conducted using synthetic groundwater to investigate ammonium transformation. The results indicated that ammonium concentration decreased, apparently resulting from the influence of microbial oxidation and ion exchange with Ca<sup>2+</sup>, Mg<sup>2+</sup>, K<sup>+</sup>, and Na<sup>+</sup>. However, all the ammonium in the sediment was oxidized, then the adsorbed NH<sub>4</sub><sup>+</sup> became bioavailable by being released back when NH<sub>4</sub><sup>+</sup> concentration decreased in the aqueous phase. The results showed NH<sub>4</sub><sup>+</sup> behavior in a HZ where the aerobic and anaerobic environments frequently exchange, with different hydrological conditions controlled by a strong coupling between microbial activities, geochemistry, hydrology, and ion exchange. |
| first_indexed | 2024-03-09T04:06:52Z |
| format | Article |
| id | doaj.art-b36a145f6b5f4007ad3b19554a462987 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T04:06:52Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-b36a145f6b5f4007ad3b19554a4629872023-12-03T14:05:10ZengMDPI AGWater2073-44412022-04-01148123710.3390/w14081237Reactive Transport of NH<sub>4</sub><sup>+</sup> in the Hyporheic Zone from the Ground Water to the Surface WaterAilan Yan0Xianyan Guo1Donghui Hu2Xiaoyang Chen3Key Laboratory for Technology in Rural Water Management of Zhejiang Province, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, ChinaProduction & Technology Department, Reconnaissance and Design Institute, Qiantang River Administration of Zhejiang Province, Hangzhou 310018, ChinaHydraulic and Agriculture Engineering Department, Yuyao Water Conservancy Bureau, Yuyao 315402, ChinaKey Laboratory for Technology in Rural Water Management of Zhejiang Province, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, ChinaNowadays, ammonia nitrogen (NH<sub>4</sub><sup>+</sup>) pollution gets more and more attention in drinking water sources. This study investigated the main behavior of biogeochemical NH<sub>4</sub><sup>+</sup> from groundwater to surface water in a hyporheic zone (HZ) sediment from a reservoir. The experiments were conducted using synthetic groundwater to investigate ammonium transformation. The results indicated that ammonium concentration decreased, apparently resulting from the influence of microbial oxidation and ion exchange with Ca<sup>2+</sup>, Mg<sup>2+</sup>, K<sup>+</sup>, and Na<sup>+</sup>. However, all the ammonium in the sediment was oxidized, then the adsorbed NH<sub>4</sub><sup>+</sup> became bioavailable by being released back when NH<sub>4</sub><sup>+</sup> concentration decreased in the aqueous phase. The results showed NH<sub>4</sub><sup>+</sup> behavior in a HZ where the aerobic and anaerobic environments frequently exchange, with different hydrological conditions controlled by a strong coupling between microbial activities, geochemistry, hydrology, and ion exchange.https://www.mdpi.com/2073-4441/14/8/1237hyporheic zoneammonium (NH<sub>4</sub><sup>+</sup>) pollutionbiological oxidationion exchange |
| spellingShingle | Ailan Yan Xianyan Guo Donghui Hu Xiaoyang Chen Reactive Transport of NH<sub>4</sub><sup>+</sup> in the Hyporheic Zone from the Ground Water to the Surface Water Water hyporheic zone ammonium (NH<sub>4</sub><sup>+</sup>) pollution biological oxidation ion exchange |
| title | Reactive Transport of NH<sub>4</sub><sup>+</sup> in the Hyporheic Zone from the Ground Water to the Surface Water |
| title_full | Reactive Transport of NH<sub>4</sub><sup>+</sup> in the Hyporheic Zone from the Ground Water to the Surface Water |
| title_fullStr | Reactive Transport of NH<sub>4</sub><sup>+</sup> in the Hyporheic Zone from the Ground Water to the Surface Water |
| title_full_unstemmed | Reactive Transport of NH<sub>4</sub><sup>+</sup> in the Hyporheic Zone from the Ground Water to the Surface Water |
| title_short | Reactive Transport of NH<sub>4</sub><sup>+</sup> in the Hyporheic Zone from the Ground Water to the Surface Water |
| title_sort | reactive transport of nh sub 4 sub sup sup in the hyporheic zone from the ground water to the surface water |
| topic | hyporheic zone ammonium (NH<sub>4</sub><sup>+</sup>) pollution biological oxidation ion exchange |
| url | https://www.mdpi.com/2073-4441/14/8/1237 |
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