Memorias de investigación
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Factors driving the carbon mineralization priming effect in a sandy loam soil amended with different types of biochar
Año:2014
Áreas de investigación
  • Abono del suelo
Datos
Descripción
The effect of biochar on the soil carbon mineral- ization priming effect depends on the characteristics of the raw materials, production method and pyrolysis conditions. The goal of the present study is to evaluate the impact of three different types of biochar on physicochemical properties and CO2 emissions of a sandy loam soil. For this purpose, soil was amended with three different biochars (BI, BII and BIII) at a rate of 8 wt % and soil CO2 emissions were measured for 45 days. BI is produced from a mixed wood sieving from wood chip production, BII from a mixture of paper sludge and wheat husks and BIII from sewage sludge. Cumulative CO2 emissions of biochars, soil and amended soil were well fit to a simple first-order kinetic model with correlation coef- ficients (r 2 ) greater than 0.97. Results show a negative prim- ing effect in the soil after addition of BI and a positive prim- ing effect in the case of soil amended with BII and BIII. These results can be related to different biochar properties such as carbon content, carbon aromaticity, volatile matter, fixed carbon, easily oxidized organic carbon or metal and phenolic substance content in addition to surface biochar properties. Three biochars increased the values of soil field capacity and wilting point, while effects over pH and cation exchange capacity were not observed.
Internacional
Si
JCR del ISI
Si
Título de la revista
Solid Earth
ISSN
1869-9510
Factor de impacto JCR
2,155
Información de impacto
Datos JCR del año 2013
Volumen
5
DOI
10.5194/se-5-585-2014
Número de revista
Desde la página
585
Hasta la página
594
Mes
SIN MES
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Valorización de Recursos
  • Grupo de Investigación: Grupo de Automatización en Señal y Comunicaciones (GASC)
  • Departamento: Ingeniería Geológica y Minera
  • Departamento: Matemática Aplicada
  • Departamento: Producción Agraria