The Effects of Vermicompost and Steel Slag Amendments on the Physicochemical Properties and Bacterial Community Structure of Acidic Soil Containing Copper Sulfide Mines
Acidification and heavy metal stress pose challenging threats to the terrestrial environment. This investigation endeavors to scrutinize the combined effects of vermicompost and steel slag, either singularly or in concert with Ryegrass (<i>Lolium perenne</i> L.), on the remediation of ac...
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MDPI AG
2024-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/14/3/1289 |
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| author | Xiaojuan Wang Jinchun Xue Min He Hui Qi Shuting Wang |
| author_facet | Xiaojuan Wang Jinchun Xue Min He Hui Qi Shuting Wang |
| author_sort | Xiaojuan Wang |
| collection | DOAJ |
| description | Acidification and heavy metal stress pose challenging threats to the terrestrial environment. This investigation endeavors to scrutinize the combined effects of vermicompost and steel slag, either singularly or in concert with Ryegrass (<i>Lolium perenne</i> L.), on the remediation of acidic soil resulting from sulfide copper mining. The findings illuminate substantial ameliorations in soil attributes. The application of these amendments precipitates an elevation in soil pH of 1.39–3.08, an augmentation in organic matter of 4.05–8.65, a concomitant reduction in total Cu content of 43.2–44.7%, and a marked mitigation in Cu bioavailability of 64.2–80.3%. The pronounced reduction in soil Cu bioavailability within the steel slag treatment group (L2) is noteworthy. Characterization analyses of vermicompost and steel slag further elucidate their propensity for sequestering Cu<sup>2+</sup> ions in the soil matrix. Concerning botanical analysis, the vermicompost treatment group (L1) significantly enhances soil fertility, culminating in the accumulation of 208.35 mg kg<sup>−1</sup> of Cu in <i>L. perenne</i> stems and 1412.05 mg kg<sup>−1</sup> in the roots. Additionally, the introduction of vermicompost and steel slag enriches soil OTU (Operational Taxonomic Units) quantity, thereby augmenting soil bacterial community diversity. Particularly noteworthy is the substantial augmentation observed in OTU quantities for the vermicompost treatment group (L1) and the combined vermicompost with steel slag treatment group (L3), exhibiting increments of 126.04% and 119.53% in comparison to the control (CK). In summation, the application of vermicompost and steel slag efficaciously diminishes the bioavailability of Cu in the soil, augments Cu accumulation in <i>L. perenne,</i> induces shifts in the soil microbial community structure, and amplifies soil bacterial diversity. Crucially, the concomitant application of vermicompost and steel slag emerges as a holistic and promising strategy for the remediation of sulfide copper mining acidic soil. |
| first_indexed | 2024-03-08T04:01:04Z |
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| language | English |
| last_indexed | 2024-03-08T04:01:04Z |
| publishDate | 2024-02-01 |
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| spelling | doaj.art-e6b1c4d96ddd4ed6b436a8b82a421ac72024-02-09T15:08:31ZengMDPI AGApplied Sciences2076-34172024-02-01143128910.3390/app14031289The Effects of Vermicompost and Steel Slag Amendments on the Physicochemical Properties and Bacterial Community Structure of Acidic Soil Containing Copper Sulfide MinesXiaojuan Wang0Jinchun Xue1Min He2Hui Qi3Shuting Wang4School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, ChinaSchool of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, ChinaSchool of Software Engineering, Jiangxi University of Science and Technology, Nanchang 330013, ChinaSchool of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, ChinaSchool of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, ChinaAcidification and heavy metal stress pose challenging threats to the terrestrial environment. This investigation endeavors to scrutinize the combined effects of vermicompost and steel slag, either singularly or in concert with Ryegrass (<i>Lolium perenne</i> L.), on the remediation of acidic soil resulting from sulfide copper mining. The findings illuminate substantial ameliorations in soil attributes. The application of these amendments precipitates an elevation in soil pH of 1.39–3.08, an augmentation in organic matter of 4.05–8.65, a concomitant reduction in total Cu content of 43.2–44.7%, and a marked mitigation in Cu bioavailability of 64.2–80.3%. The pronounced reduction in soil Cu bioavailability within the steel slag treatment group (L2) is noteworthy. Characterization analyses of vermicompost and steel slag further elucidate their propensity for sequestering Cu<sup>2+</sup> ions in the soil matrix. Concerning botanical analysis, the vermicompost treatment group (L1) significantly enhances soil fertility, culminating in the accumulation of 208.35 mg kg<sup>−1</sup> of Cu in <i>L. perenne</i> stems and 1412.05 mg kg<sup>−1</sup> in the roots. Additionally, the introduction of vermicompost and steel slag enriches soil OTU (Operational Taxonomic Units) quantity, thereby augmenting soil bacterial community diversity. Particularly noteworthy is the substantial augmentation observed in OTU quantities for the vermicompost treatment group (L1) and the combined vermicompost with steel slag treatment group (L3), exhibiting increments of 126.04% and 119.53% in comparison to the control (CK). In summation, the application of vermicompost and steel slag efficaciously diminishes the bioavailability of Cu in the soil, augments Cu accumulation in <i>L. perenne,</i> induces shifts in the soil microbial community structure, and amplifies soil bacterial diversity. Crucially, the concomitant application of vermicompost and steel slag emerges as a holistic and promising strategy for the remediation of sulfide copper mining acidic soil.https://www.mdpi.com/2076-3417/14/3/1289vermicompoststeel slagcoppersoil remediationbacterial diversity |
| spellingShingle | Xiaojuan Wang Jinchun Xue Min He Hui Qi Shuting Wang The Effects of Vermicompost and Steel Slag Amendments on the Physicochemical Properties and Bacterial Community Structure of Acidic Soil Containing Copper Sulfide Mines Applied Sciences vermicompost steel slag copper soil remediation bacterial diversity |
| title | The Effects of Vermicompost and Steel Slag Amendments on the Physicochemical Properties and Bacterial Community Structure of Acidic Soil Containing Copper Sulfide Mines |
| title_full | The Effects of Vermicompost and Steel Slag Amendments on the Physicochemical Properties and Bacterial Community Structure of Acidic Soil Containing Copper Sulfide Mines |
| title_fullStr | The Effects of Vermicompost and Steel Slag Amendments on the Physicochemical Properties and Bacterial Community Structure of Acidic Soil Containing Copper Sulfide Mines |
| title_full_unstemmed | The Effects of Vermicompost and Steel Slag Amendments on the Physicochemical Properties and Bacterial Community Structure of Acidic Soil Containing Copper Sulfide Mines |
| title_short | The Effects of Vermicompost and Steel Slag Amendments on the Physicochemical Properties and Bacterial Community Structure of Acidic Soil Containing Copper Sulfide Mines |
| title_sort | effects of vermicompost and steel slag amendments on the physicochemical properties and bacterial community structure of acidic soil containing copper sulfide mines |
| topic | vermicompost steel slag copper soil remediation bacterial diversity |
| url | https://www.mdpi.com/2076-3417/14/3/1289 |
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