Investigating the Suitability of Grape Husks Biochar, Municipal Solid Wastes Compost and Mixtures of Them for Agricultural Applications to Mediterranean Soils
Present work aimed at evaluating the leaching potential of grape husks biochar, municipal solid wastes compost and their combined application as amendments of sandy Mediterranean soil, in order to assess their capability of releasing/retaining nutrients or heavy metals and therefore their suitabilit...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | Resources |
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| Online Access: | https://www.mdpi.com/2079-9276/9/3/33 |
| _version_ | 1798006654403346432 |
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| author | Despina Vamvuka Katerina Esser Kostas Komnitsas |
| author_facet | Despina Vamvuka Katerina Esser Kostas Komnitsas |
| author_sort | Despina Vamvuka |
| collection | DOAJ |
| description | Present work aimed at evaluating the leaching potential of grape husks biochar, municipal solid wastes compost and their combined application as amendments of sandy Mediterranean soil, in order to assess their capability of releasing/retaining nutrients or heavy metals and therefore their suitability for agricultural applications. Grape husks biochar was produced by pyrolysis at 500 °C in a fixed bed unit. Column leaching experiments, simulating Mediterranean rainfall conditions, were conducted. For all compost/biochar/soil combinations, alkali and alkaline earth metals showed greater solubility, increasing the pH of the extracts and thus decreasing the leachability of heavy metals Cr, Cu, Zr and Sr. Biochar co-application with compost did not prevent the leaching of nitrates, phosphates or trace elements; however, it did lower the chemical oxygen demand and allowed the slower release of sodium, calcium and magnesium from soil. As compared to compost, addition of biochar to soil increased the concentration of potassium by 76%, whereas it decreased that of heavy metals in the leachates by 40%−95%. Grape husks biochar could serve as a better soil amendment than municipal solid wastes compost and if carefully managed could be used as liming agent or fertilizer on acidic soils. |
| first_indexed | 2024-04-11T12:59:10Z |
| format | Article |
| id | doaj.art-2c9c01c61d84426bad5338557024ea9f |
| institution | Directory Open Access Journal |
| issn | 2079-9276 |
| language | English |
| last_indexed | 2024-04-11T12:59:10Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Resources |
| spelling | doaj.art-2c9c01c61d84426bad5338557024ea9f2022-12-22T04:23:00ZengMDPI AGResources2079-92762020-03-01933310.3390/resources9030033resources9030033Investigating the Suitability of Grape Husks Biochar, Municipal Solid Wastes Compost and Mixtures of Them for Agricultural Applications to Mediterranean SoilsDespina Vamvuka0Katerina Esser1Kostas Komnitsas2School of Mineral Resources Engineering, Technical University of Crete, 73100 Chania, GreeceSchool of Mineral Resources Engineering, Technical University of Crete, 73100 Chania, GreeceSchool of Mineral Resources Engineering, Technical University of Crete, 73100 Chania, GreecePresent work aimed at evaluating the leaching potential of grape husks biochar, municipal solid wastes compost and their combined application as amendments of sandy Mediterranean soil, in order to assess their capability of releasing/retaining nutrients or heavy metals and therefore their suitability for agricultural applications. Grape husks biochar was produced by pyrolysis at 500 °C in a fixed bed unit. Column leaching experiments, simulating Mediterranean rainfall conditions, were conducted. For all compost/biochar/soil combinations, alkali and alkaline earth metals showed greater solubility, increasing the pH of the extracts and thus decreasing the leachability of heavy metals Cr, Cu, Zr and Sr. Biochar co-application with compost did not prevent the leaching of nitrates, phosphates or trace elements; however, it did lower the chemical oxygen demand and allowed the slower release of sodium, calcium and magnesium from soil. As compared to compost, addition of biochar to soil increased the concentration of potassium by 76%, whereas it decreased that of heavy metals in the leachates by 40%−95%. Grape husks biochar could serve as a better soil amendment than municipal solid wastes compost and if carefully managed could be used as liming agent or fertilizer on acidic soils.https://www.mdpi.com/2079-9276/9/3/33amendmentbiocharcompostsoil leaching |
| spellingShingle | Despina Vamvuka Katerina Esser Kostas Komnitsas Investigating the Suitability of Grape Husks Biochar, Municipal Solid Wastes Compost and Mixtures of Them for Agricultural Applications to Mediterranean Soils Resources amendment biochar compost soil leaching |
| title | Investigating the Suitability of Grape Husks Biochar, Municipal Solid Wastes Compost and Mixtures of Them for Agricultural Applications to Mediterranean Soils |
| title_full | Investigating the Suitability of Grape Husks Biochar, Municipal Solid Wastes Compost and Mixtures of Them for Agricultural Applications to Mediterranean Soils |
| title_fullStr | Investigating the Suitability of Grape Husks Biochar, Municipal Solid Wastes Compost and Mixtures of Them for Agricultural Applications to Mediterranean Soils |
| title_full_unstemmed | Investigating the Suitability of Grape Husks Biochar, Municipal Solid Wastes Compost and Mixtures of Them for Agricultural Applications to Mediterranean Soils |
| title_short | Investigating the Suitability of Grape Husks Biochar, Municipal Solid Wastes Compost and Mixtures of Them for Agricultural Applications to Mediterranean Soils |
| title_sort | investigating the suitability of grape husks biochar municipal solid wastes compost and mixtures of them for agricultural applications to mediterranean soils |
| topic | amendment biochar compost soil leaching |
| url | https://www.mdpi.com/2079-9276/9/3/33 |
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