Cadmium-contaminated soil: metal extractability and chemical kinetics of filter cake organic matter degradation
| Autor: | Lucia Pittol Firme, Felipe Carlos Alvarez Villanueva, Antonio Arnaldo Rodella |
|---|---|
| Jazyk: | portugalština |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Química Nova v.37 n.6 2014 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ Química Nova, Volume: 37, Issue: 6, Pages: 956-963, Published: JUL 2014 Química Nova, Vol 37, Iss 6, Pp 956-963 (2014) |
| Popis: | The chemical kinetics of sugarcane filter cake (FC) organic matter degradation at rates (0, 40, 80, and 120 t ha-1) in non-contaminated and different degrees of cadmium-contaminated Oxisol (0.19, 28, 56, 112 and 200 mg Cd kg-1) and DTPA-extractable Cd was studied. FC degradation was determined by quantifying CO2 emitted from soil samples during 72 days of incubation. DTPA-extractable Cd was performed after the incubation period. FC degradation was described by a two-stage equation of chemical kinetics. FC degradation rates were between 15 and 33%. Total CO2 emitted from FC declined with increasing degree in Cd-contamination and the DTPA-extractable Cd declined with FC rates. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|