Technosol made from coal waste as a strategy to plant growth and environmental control
Coal waste disposal areas demand proper rehabilitation activities because several environmental impacts are related to them, such as acid mine drainage, loss of biohabitats, water pollution, and soil degradation. The most common strategy is to cover them with an impermeable layer followed by a new s...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2021-04-01
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| Series: | Energy Geoscience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666759220300676 |
| _version_ | 1818574347887968256 |
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| author | Beatriz A. Firpo Jéssica Weiler Ivo A.H. Schneider |
| author_facet | Beatriz A. Firpo Jéssica Weiler Ivo A.H. Schneider |
| author_sort | Beatriz A. Firpo |
| collection | DOAJ |
| description | Coal waste disposal areas demand proper rehabilitation activities because several environmental impacts are related to them, such as acid mine drainage, loss of biohabitats, water pollution, and soil degradation. The most common strategy is to cover them with an impermeable layer followed by a new soil layer as soon as possible, while maximizing plant growth and avoiding water and wind erosion. This study examines the possibility of transforming coal waste itself into a substrate for plant growth, namely technosol, assuming its own use for progressive rehabilitation and revegetation of waste deposits. The coal waste is amended with other residues in an integrated waste management approach: rice husk ash, steel slag, and sewage sludge to adjust physical structure, pH, and nutrient availability, respectively. The raw material composition, fertility, metals bioavailability, plant growth, and nutrients in plant tissue are analyzed after successive growth of lopsided oats (Avena strigosa) and maize (Zea mays). The results show that coal waste allows a fertile plant substrate after being amended in accordance to experimental conditions. The soil metal concentration is found to fall within the limits of natural variation for soils in the study area and nutrients in plant tissue are found to be consistent with lopsided oats and maize standards. The proposed waste mixture results in a technosol capable of adequately promoting plant growth, that is, it is a potential resource to accelerate revegetation and natural succession in coal waste disposal areas. |
| first_indexed | 2024-12-15T00:25:24Z |
| format | Article |
| id | doaj.art-f72c0736124041e5adfc2b9f7a2aa90a |
| institution | Directory Open Access Journal |
| issn | 2666-7592 |
| language | English |
| last_indexed | 2024-12-15T00:25:24Z |
| publishDate | 2021-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Energy Geoscience |
| spelling | doaj.art-f72c0736124041e5adfc2b9f7a2aa90a2022-12-21T22:42:11ZengKeAi Communications Co., Ltd.Energy Geoscience2666-75922021-04-0122160166Technosol made from coal waste as a strategy to plant growth and environmental controlBeatriz A. Firpo0Jéssica Weiler1Ivo A.H. Schneider2Universidade Federal Do Rio Grande Do Sul, LTM - DEMIN/PPGE3M, Av. Bento Gonçalves 9500, CEP: 91501-970, Porto Alegre, RS, BrazilUniversidade Federal Do Rio Grande Do Sul, LTM - DEMIN/PPGE3M, Av. Bento Gonçalves 9500, CEP: 91501-970, Porto Alegre, RS, BrazilCorresponding author.; Universidade Federal Do Rio Grande Do Sul, LTM - DEMIN/PPGE3M, Av. Bento Gonçalves 9500, CEP: 91501-970, Porto Alegre, RS, BrazilCoal waste disposal areas demand proper rehabilitation activities because several environmental impacts are related to them, such as acid mine drainage, loss of biohabitats, water pollution, and soil degradation. The most common strategy is to cover them with an impermeable layer followed by a new soil layer as soon as possible, while maximizing plant growth and avoiding water and wind erosion. This study examines the possibility of transforming coal waste itself into a substrate for plant growth, namely technosol, assuming its own use for progressive rehabilitation and revegetation of waste deposits. The coal waste is amended with other residues in an integrated waste management approach: rice husk ash, steel slag, and sewage sludge to adjust physical structure, pH, and nutrient availability, respectively. The raw material composition, fertility, metals bioavailability, plant growth, and nutrients in plant tissue are analyzed after successive growth of lopsided oats (Avena strigosa) and maize (Zea mays). The results show that coal waste allows a fertile plant substrate after being amended in accordance to experimental conditions. The soil metal concentration is found to fall within the limits of natural variation for soils in the study area and nutrients in plant tissue are found to be consistent with lopsided oats and maize standards. The proposed waste mixture results in a technosol capable of adequately promoting plant growth, that is, it is a potential resource to accelerate revegetation and natural succession in coal waste disposal areas.http://www.sciencedirect.com/science/article/pii/S2666759220300676Mine wasteMine soilTechnogenic soilWaste managementMine reclamation |
| spellingShingle | Beatriz A. Firpo Jéssica Weiler Ivo A.H. Schneider Technosol made from coal waste as a strategy to plant growth and environmental control Energy Geoscience Mine waste Mine soil Technogenic soil Waste management Mine reclamation |
| title | Technosol made from coal waste as a strategy to plant growth and environmental control |
| title_full | Technosol made from coal waste as a strategy to plant growth and environmental control |
| title_fullStr | Technosol made from coal waste as a strategy to plant growth and environmental control |
| title_full_unstemmed | Technosol made from coal waste as a strategy to plant growth and environmental control |
| title_short | Technosol made from coal waste as a strategy to plant growth and environmental control |
| title_sort | technosol made from coal waste as a strategy to plant growth and environmental control |
| topic | Mine waste Mine soil Technogenic soil Waste management Mine reclamation |
| url | http://www.sciencedirect.com/science/article/pii/S2666759220300676 |
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