Modelagem da cinética de biodegradação de paclobutrazol em dois solos do semiárido do nordeste brasileiro

oleh: Fernanda Leitão Vaz, André Maciel Netto, Antonio Celso Dantas Antonino, Antonio Cláudio Marques Afonso, Jean Manuel Fonseca Martins, Ester Ribeiro Gouveia

Format: Article
Diterbitkan: Sociedade Brasileira de Química 2012-01-01

Deskripsi

Mathematical models can help to prevent high levels of toxic substances in soil or fruits of plants treated with pesticides and indicate that such substances should be systematically monitored. The aim of this research was to study the kinetics of paclobutrazol biodegradation by soil native bacteria using mathematical models. Three models were used to assess the kinetics of paclobutrazol biodegradation obtained experimentally. Excellent fits were obtained using dual kinetic and logistic models. The use of glycerol as additional carbon source increased the biodegradation of PBZ and consequently decreased the time required for a given PBZ initial concentration be halved.