Abstract
Two contaminating fungi were isolated from a bioreactor containing diethylketone and Streptococcus equisimilis, subsequently characterized at molecular level and identified as belonging to the Alternaria and Penicillium genera. The ability of these fungi to biodegrade DEK is evaluated. The kinetic parameters are estimated using four growth kinetic models for biodegradation of organic compounds available in literature. The experimental data for Alternaria sp. and Penicillium sp. was found to be better fitted by the Haldane and the Luong respectively. Biodegradation rate kinetics was evaluated using zero-order, pseudo-first order, pseudo-second order and three-half order models. The pseudo-second-order model was found suitable for all the concentrations of DEK tested for the biodegradation assays using Penicillium sp. whereas for the Alternaria sp. this model just describes properly the assays with initial concentrations of DEK higher than 0.5 g/L. The percentage of biodegraded DEK were approximately 100%, for all the initial concentrations tested.
Keywords: Biodegradation, diethylketone, fungi, genetic identification, kinetics.
Graphical Abstract
Related Books
Intelligent Technologies for Automated Electronic Systems
Mechanical Engineering Technologies and Applications
Multistage Interconnection Network Design for Engineers
Mechanical Engineering Technologies and Applications
Intelligent Systems for IoE Based Smart Cities
Safety in Chemical and Process Industries: A Comprehensive Assessment
Intelligent Technologies for Scientific Research and Engineering
Futuristic Projects in Energy and Automation Sectors: A Brief Review of New Technologies Driving Sustainable Development
Materials and Technologies for a Green Environment
Emerging Technologies and Applications for a Smart and Sustainable World
20
3