The aeration and dredging stimulate the reduction of pollution and carbon emissions in a sediment microcosm study
文献类型：期刊论文
| 作者 | Liu, Lixiang2; Yang, Ke1; Li, Liangzhong3,4; Liu, Weiwei2; Yuan, Haoran3,4; Han, Yongwei2; Zhang, Enxiang5; Zheng, Yuping6; Jia, Yajuan7 |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2024-10-30 |
| 卷号 | 14期号:1页码:17 |
| 关键词 | Aeration Dredging Greenhouse gases (GHGs) Pollutants removals Reduction of pollution and carbon emissions |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/s41598-024-75790-7 |
| 通讯作者 | Liu, Lixiang(liulixiang1982@126.com) ; Li, Liangzhong(lilz@ms.giec.ac.cn) ; Liu, Weiwei(liuww@craes.org.cn) |
| 英文摘要 | Sediment dredging and aeration are used as important technical measures to remediate internal loading of sediment in polluted rivers. However, previous studies have overlooked the impact of dredging and aeration on Greenhouse gases (GHGs) emission. We established three aeration rate(six different aeration intervals), one dredging treatment to investigate the effect of aeration and dredging on pollutant removals and CO2, CH4 and N2O emissions. The results indicated the pollutants and GHGs at 2.4, 3.4, 4.4 L min-1 aeration rates reached collaborative emission reduction after more than 3 h or within 1.5 h. Meanwhile, the GHGs fluxes after aeration decreased with the increasing aeration rate, with the mean CO2, CH4 and N2O fluxes of 69.74, 0.16, 7.53 mg m-2 h-1 and 33.64, 0.09, 4.17 mg m-2 h-1 before and after aeration, respectively. With respect to dredging, the pollutants and N2O reached synergic effects between reduction of pollution and carbon emissions after 1 h dredging. Specifically, the CO2 and CH4 emissions after dredging was lower than those of before dredging, but the N2O emissions was higher than those of before dredging. In addition, our analysis revealed that the dissolved oxygen (DO), oxidation-reduction potential (ORP), available potassium (AK) and ammoniacal nitrogen (NH4+-N) in the sediment influenced GHGs fluxes at the water-air interface in the aeration. Our study indicated moderate aeration and dredging can achieve the synergistic effect in reducing pollution and carbon emissions. |
| WOS关键词 | FLOW CONSTRUCTED WETLAND ; WASTE-WATER ; NITROGEN REMOVAL ; N2O EMISSION ; TRANSFORMATION ; PERFORMANCE ; LAKE |
| 资助项目 | National Natural Science Foundation of China ; State Key Laboratory of Environmental Criteria and Risk Assessment |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001346203600011 |
| 出版者 | NATURE PORTFOLIO |
| 资助机构 | National Natural Science Foundation of China ; State Key Laboratory of Environmental Criteria and Risk Assessment |
| 源URL | [http://ir.giec.ac.cn/handle/344007/43470]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Liu, Lixiang; Li, Liangzhong; Liu, Weiwei |
| 作者单位 | 1.Jiangxi Geol Bur, Expt Testing Team, Nanchang 330006, Peoples R China 2.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, State Environm Protect Key Lab Reg Ecoproc & Funct, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 4.Guangdong Prov Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 5.Chongqing Res Acad Environm Sci, Chongqing 401336, Peoples R China 6.Guangzhou Transport Planning Res Inst, Guangzhou 510030, Peoples R China 7.Baotou Ecol Environm Technol Ctr, Baotou 014010, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Lixiang,Yang, Ke,Li, Liangzhong,et al. The aeration and dredging stimulate the reduction of pollution and carbon emissions in a sediment microcosm study[J]. SCIENTIFIC REPORTS,2024,14(1):17. |
| APA | Liu, Lixiang.,Yang, Ke.,Li, Liangzhong.,Liu, Weiwei.,Yuan, Haoran.,...&Jia, Yajuan.(2024).The aeration and dredging stimulate the reduction of pollution and carbon emissions in a sediment microcosm study.SCIENTIFIC REPORTS,14(1),17. |
| MLA | Liu, Lixiang,et al."The aeration and dredging stimulate the reduction of pollution and carbon emissions in a sediment microcosm study".SCIENTIFIC REPORTS 14.1(2024):17. |
入库方式： OAI收割
来源：广州能源研究所
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