Reinforced Bioremediation of Excessive Nitrate in Atrazine-Contaminated Soil by Biodegradable Composite Carbon Source
Bioremediation is a good alternative to dispose of the excessive nitrate (NO<sub>3</sub><sup>−</sup>) in soil and alleviate the secondary salinization of soil, but the presence of atrazine in soil interferes with the bioremediation process. In the present study, the biodegrad...
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| Format: | Article |
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MDPI AG
2023-06-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/13/2765 |
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| author | Zhongchen Yang Yanhong Lou Hong Pan Hui Wang Quangang Yang Yajie Sun Yuping Zhuge |
| author_facet | Zhongchen Yang Yanhong Lou Hong Pan Hui Wang Quangang Yang Yajie Sun Yuping Zhuge |
| author_sort | Zhongchen Yang |
| collection | DOAJ |
| description | Bioremediation is a good alternative to dispose of the excessive nitrate (NO<sub>3</sub><sup>−</sup>) in soil and alleviate the secondary salinization of soil, but the presence of atrazine in soil interferes with the bioremediation process. In the present study, the biodegradable composite carbon source with different dosages was added to the atrazine-contaminated soil to intensify the bioremediation of excessive NO<sub>3</sub><sup>−</sup>. The atrazine-contaminated soil with a 25 g/kg composite carbon source achieved the optimal NO<sub>3</sub><sup>−</sup> removal performance (92.10%), which was slightly higher than that with a 5 g/kg composite carbon source (86.15%) (<i>p</i> > 0.05). Unfortunately, the negative effects of the former were observed, such as the distinctly higher emissions of N<sub>2</sub>O, CO<sub>2</sub> and a more powerful global warming potential (GWP). Microbial community analysis showed that the usage of the composite carbon source clearly decreased the richness and diversity of the microbial community, and greatly stimulated nitrogen metabolism and atrazine degradation (<i>p</i> < 0.05). To sum up, the application of a 5 g/kg composite carbon source contributed to guaranteeing bioremediation performance and reducing adverse environmental impacts at the same time. |
| first_indexed | 2024-03-11T01:31:52Z |
| format | Article |
| id | doaj.art-fbd014e1736d42fd9a6889231c0839f3 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T01:31:52Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-fbd014e1736d42fd9a6889231c0839f32023-11-18T17:19:45ZengMDPI AGPolymers2073-43602023-06-011513276510.3390/polym15132765Reinforced Bioremediation of Excessive Nitrate in Atrazine-Contaminated Soil by Biodegradable Composite Carbon SourceZhongchen Yang0Yanhong Lou1Hong Pan2Hui Wang3Quangang Yang4Yajie Sun5Yuping Zhuge6National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai’an 271018, ChinaNational Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai’an 271018, ChinaNational Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai’an 271018, ChinaNational Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai’an 271018, ChinaNational Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai’an 271018, ChinaNational Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai’an 271018, ChinaNational Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai’an 271018, ChinaBioremediation is a good alternative to dispose of the excessive nitrate (NO<sub>3</sub><sup>−</sup>) in soil and alleviate the secondary salinization of soil, but the presence of atrazine in soil interferes with the bioremediation process. In the present study, the biodegradable composite carbon source with different dosages was added to the atrazine-contaminated soil to intensify the bioremediation of excessive NO<sub>3</sub><sup>−</sup>. The atrazine-contaminated soil with a 25 g/kg composite carbon source achieved the optimal NO<sub>3</sub><sup>−</sup> removal performance (92.10%), which was slightly higher than that with a 5 g/kg composite carbon source (86.15%) (<i>p</i> > 0.05). Unfortunately, the negative effects of the former were observed, such as the distinctly higher emissions of N<sub>2</sub>O, CO<sub>2</sub> and a more powerful global warming potential (GWP). Microbial community analysis showed that the usage of the composite carbon source clearly decreased the richness and diversity of the microbial community, and greatly stimulated nitrogen metabolism and atrazine degradation (<i>p</i> < 0.05). To sum up, the application of a 5 g/kg composite carbon source contributed to guaranteeing bioremediation performance and reducing adverse environmental impacts at the same time.https://www.mdpi.com/2073-4360/15/13/2765biodegradable polymerbioremediationcomposite carbon sourcenitrateatrazinemicrobial community structure |
| spellingShingle | Zhongchen Yang Yanhong Lou Hong Pan Hui Wang Quangang Yang Yajie Sun Yuping Zhuge Reinforced Bioremediation of Excessive Nitrate in Atrazine-Contaminated Soil by Biodegradable Composite Carbon Source Polymers biodegradable polymer bioremediation composite carbon source nitrate atrazine microbial community structure |
| title | Reinforced Bioremediation of Excessive Nitrate in Atrazine-Contaminated Soil by Biodegradable Composite Carbon Source |
| title_full | Reinforced Bioremediation of Excessive Nitrate in Atrazine-Contaminated Soil by Biodegradable Composite Carbon Source |
| title_fullStr | Reinforced Bioremediation of Excessive Nitrate in Atrazine-Contaminated Soil by Biodegradable Composite Carbon Source |
| title_full_unstemmed | Reinforced Bioremediation of Excessive Nitrate in Atrazine-Contaminated Soil by Biodegradable Composite Carbon Source |
| title_short | Reinforced Bioremediation of Excessive Nitrate in Atrazine-Contaminated Soil by Biodegradable Composite Carbon Source |
| title_sort | reinforced bioremediation of excessive nitrate in atrazine contaminated soil by biodegradable composite carbon source |
| topic | biodegradable polymer bioremediation composite carbon source nitrate atrazine microbial community structure |
| url | https://www.mdpi.com/2073-4360/15/13/2765 |
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