Sorption and desorption of phosphate on biochar and biochar-soil mixtures
The term biochar refers to materials with diverse chemical, physical and physicochemical characteristics that have potential as a soil amendment. The purpose of this study was to investigate the P sorption/desorption properties of various slow biochars and one fast pyrolysis biochar and to determine...
| Autor principal: | Morales, Marina Moura |
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| Outros Autores: | Comerford, Nicholas Brian, Guerrini, Iraê Amaral, Falcão, Newton P.S., Reeves, James B. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Soil Use and Management
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17831 |
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oai:repositorio:1-17831 |
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oai:repositorio:1-17831 Sorption and desorption of phosphate on biochar and biochar-soil mixtures Morales, Marina Moura Comerford, Nicholas Brian Guerrini, Iraê Amaral Falcão, Newton P.S. Reeves, James B. Charcoal desorption Grass Phosphate Physicochemical Property Pyrolysis Soil Amendment Soil Chemistry Sorption Sugar Cane Tropical Soils Wood Inga Pennisetum Purpureum Saccharum The term biochar refers to materials with diverse chemical, physical and physicochemical characteristics that have potential as a soil amendment. The purpose of this study was to investigate the P sorption/desorption properties of various slow biochars and one fast pyrolysis biochar and to determine how a fast pyrolysis biochar influences these properties in a degraded tropical soil. The fast pyrolysis biochar was a mixture of three separate biochars: sawdust, elephant grass and sugar cane leaves. Three other biochars were made by slow pyrolysis from three Amazonian tree species (Lacre, Ingá and Embaúba) at three temperatures of formation (400 °C, 500 °C, 600 °C). Inorganic P was added to develop sorption curves and then desorbed to develop desorption curves for all biochar situations. For the slow pyrolysis, the 600 oC biochar had a reduced capacity to sorb P (4-10 times less) relative to those biochars formed at 400 °C and 500 °C. Conversely, biochar from Ingá desorbed the most P. The fast pyrolysis biochar, when mixed with degraded tropical mineral soil, decreased the soil's P sorption capacity by 55% presumably because of the high soluble, inorganic P prevalent in this biochar (909 mg P/kg of biochar). Phosphorus desorption from the fast pyrolysis biochar/soil mixture not only exhibited a common desorption curve but also buffered the soil solution at a value of ca. 0.2 mg/L. This study shows the diversity in P chemistry that can be expected when biochar is a soil amendment and suggests the potential to develop biochars with properties to meet specific objectives. © 2013 British Society of Soil Science. 2020-06-15T21:49:32Z 2020-06-15T21:49:32Z 2013 Artigo https://repositorio.inpa.gov.br/handle/1/17831 10.1111/sum.12047 en Volume 29, Número 3, Pags. 306-314 Restrito Soil Use and Management |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Charcoal desorption Grass Phosphate Physicochemical Property Pyrolysis Soil Amendment Soil Chemistry Sorption Sugar Cane Tropical Soils Wood Inga Pennisetum Purpureum Saccharum |
| spellingShingle |
Charcoal desorption Grass Phosphate Physicochemical Property Pyrolysis Soil Amendment Soil Chemistry Sorption Sugar Cane Tropical Soils Wood Inga Pennisetum Purpureum Saccharum Morales, Marina Moura Sorption and desorption of phosphate on biochar and biochar-soil mixtures |
| topic_facet |
Charcoal desorption Grass Phosphate Physicochemical Property Pyrolysis Soil Amendment Soil Chemistry Sorption Sugar Cane Tropical Soils Wood Inga Pennisetum Purpureum Saccharum |
| description |
The term biochar refers to materials with diverse chemical, physical and physicochemical characteristics that have potential as a soil amendment. The purpose of this study was to investigate the P sorption/desorption properties of various slow biochars and one fast pyrolysis biochar and to determine how a fast pyrolysis biochar influences these properties in a degraded tropical soil. The fast pyrolysis biochar was a mixture of three separate biochars: sawdust, elephant grass and sugar cane leaves. Three other biochars were made by slow pyrolysis from three Amazonian tree species (Lacre, Ingá and Embaúba) at three temperatures of formation (400 °C, 500 °C, 600 °C). Inorganic P was added to develop sorption curves and then desorbed to develop desorption curves for all biochar situations. For the slow pyrolysis, the 600 oC biochar had a reduced capacity to sorb P (4-10 times less) relative to those biochars formed at 400 °C and 500 °C. Conversely, biochar from Ingá desorbed the most P. The fast pyrolysis biochar, when mixed with degraded tropical mineral soil, decreased the soil's P sorption capacity by 55% presumably because of the high soluble, inorganic P prevalent in this biochar (909 mg P/kg of biochar). Phosphorus desorption from the fast pyrolysis biochar/soil mixture not only exhibited a common desorption curve but also buffered the soil solution at a value of ca. 0.2 mg/L. This study shows the diversity in P chemistry that can be expected when biochar is a soil amendment and suggests the potential to develop biochars with properties to meet specific objectives. © 2013 British Society of Soil Science. |
| format |
Artigo |
| author |
Morales, Marina Moura |
| author2 |
Comerford, Nicholas Brian Guerrini, Iraê Amaral Falcão, Newton P.S. Reeves, James B. |
| author2Str |
Comerford, Nicholas Brian Guerrini, Iraê Amaral Falcão, Newton P.S. Reeves, James B. |
| title |
Sorption and desorption of phosphate on biochar and biochar-soil mixtures |
| title_short |
Sorption and desorption of phosphate on biochar and biochar-soil mixtures |
| title_full |
Sorption and desorption of phosphate on biochar and biochar-soil mixtures |
| title_fullStr |
Sorption and desorption of phosphate on biochar and biochar-soil mixtures |
| title_full_unstemmed |
Sorption and desorption of phosphate on biochar and biochar-soil mixtures |
| title_sort |
sorption and desorption of phosphate on biochar and biochar-soil mixtures |
| publisher |
Soil Use and Management |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17831 |
| _version_ |
1787145082785234944 |
| score |
11.755432 |