Persistence of polycyclic aromatic hydrocarbons (PAHs) in biochar-amended soil.
Chemosphere
; 146: 272-9, 2016 Mar.
Article
em En
| MEDLINE
| ID: mdl-26735727
ABSTRACT
In the present study the persistence of polycyclic aromatic hydrocarbons (PAHs) applied with biochar to acidic soil (loamy sand) was studied in two and half year field experiment. An experiment was carried out in three experimental plots (15 m(2) each). The biochar was introduced in the following doses soil without fertilization - control (C-BC00), soil with 30 t ha(-1) (B-BC30) and soil with 45 t ha(-1) (A-BC45) of biochar. Biochar addition to soils resulted in an increase in the PAHs content from 0.239 µg g(-1) in control soil to 0.526 µg g(-1) and 1.310 µg g(-1) in 30 and 45 t ha(-1) biochar-amended soil respectively. However during the experimental period the PAHs content decreased to a level characteristic for the control soil. The highest losses of PAHs were observed during the first 105 days of the experiment. Three and four rings PAHs were the most susceptible for degradation and leaching. Migration of PAHs from 0-10 cm to 10-20 cm soil horizon was also observed.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Hidrocarbonetos Policíclicos Aromáticos
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Solo
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Poluentes do Solo
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Carvão Vegetal
País como assunto:
Europa
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article