Benzene, toluene, and o-xylene degradation by free and immobilized P. putida F1 of postconsumer agave-fiber/polymer foamed composites |
| |
Authors: | JR Robledo-OrtízDE Ramírez-Arreola AA Pérez-FonsecaC Gómez O González-ReynosoJ Ramos-Quirarte R González-Núñez |
| |
Institution: | a Department of Wood, Cellulose and Paper, University of Guadalajara, Carretera Guadalajara-Nogales km 15.5, Las Agujas, Zapopan, Jalisco C.P. 45510, Mexico b Department of Engineering, University of Guadalajara, Av. Independencia Nacional # 151, Autlán de Navarro, Jalisco C.P. 48900, Mexico c Department of Chemical Engineering, University of Guadalajara, Blvd. Gral. Marcelino García Barragán # 1451, Guadalajara, Jalisco C.P. 44430, Mexico |
| |
Abstract: | Benzene, toluene, and o-xylene (BTX) degradation by immobilized Pseudomonas putida F1 of postconsumer agave-fiber/polymer foamed-composites (AFPFC) and suspended cultures was studied under controlled conditions. Analyses using FTIR-ATR and SEM showed that P. putida F1 adhered onto the composite surface and developed a biofilm. In this sense, the AFPFC were successfully used as a support for bacterial immobilization. Both systems, immobilized and suspended cells of P. putida F1, were able to completely degrade benzene and toluene from initial concentrations of 15, 30, 60, and 90 mg l−1. An inhibitory effect of the intermediary catechol from benzene degradation was observed in suspended cultures but it was not presented in the immobilized system. The degradation of o-xylene was partially accomplished in both systems. The Monod equation was used to model the experimental data obtained from the biodegradation kinetics, and they were adequately described with this model. |
| |
Keywords: | BTX Pseudomonas putida Biodegradation Immobilization Composite |
本文献已被 ScienceDirect 等数据库收录! |
|