Hexadecane aqueous emulsion characterization and uptake by an oil-degrading microbial consortium |
| |
Institution: | 1. Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Keelung Road, Sec. 4, Taipei 106, Taiwan;2. Institute of Biomedical Engineering, National Yang-Ming University, 155 Li-Nung St., Sec. 2, Taipei 112, Taiwan;1. Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Keelung Road, Sec. 4, Taipei 106, Taiwan;2. Institute of Biomedical Engineering, National Yang-Ming University, 155 Li-Nung St., Sec. 2, Taipei 112, Taiwan |
| |
Abstract: | In the present work was characterized in abiotic and biotic systems, the droplet size of hexadecane (HXD) in emulsified form. Furthermore it was assessed the uptake of HXD in their both form emulsified (microscopic droplets) and free (macroscopic droplets), using a microbial consortium with the capacity of degrading oil. HXD in emulsified form includes microscopic droplets of 0.1 and 0.5 up to 0.7 μm. In the biotic experiments the kinetic parameters values were determined either by fitting to the Contois model the consumed data of HXD emulsified and by considering also the uptake rate of the free forms of HXD as independent of their own concentration. A comparison of the maximum specific HXD uptake rate (qmax) of the oil-degrading consortium when consumes the two forms of HXD, shows to be 53 times greater for the emulsified HXD that for their free form, suggesting that consumption of HXD is realized mostly by the emulsified form. The specific transfer area decreases with the culture time due to that the HXD is emulsified and consumed by the microbial consortium, being the specific transfer area of emulsified forms (microscopic droplets) a parameter that must be considered in the design of biodegradation processes of insoluble organic pollutants. |
| |
Keywords: | Hexadecane uptake Oil-degrading consortium Emulsion |
本文献已被 ScienceDirect 等数据库收录! |
|