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Development and characterization of the 2,4,6-trichlorophenol (2,4,6-TCP) aerobic degrading granules in sequencing batch airlift reactor.
- Source :
-
International Biodeterioration & Biodegradation . Nov2014 Part A, Vol. 95, p61-66. 6p. - Publication Year :
- 2014
-
Abstract
- 2,4,6-trichlorophenol (2,4,6-TCP) aerobic degrading granules were successfully developed in the sequencing batch airlift reactor. The key strategy used in cultivation of the granules was dosing glucose and acetate as co-substrates. After granulation, average concentrations of 2,4,6-TCP and COD in the effluent were less than 8 mg L −1 and 59 mg L −1 , respectively. The removal efficiencies of 2,4,6-TCP and COD were above 93% and 90%, respectively. The specific degradation rate of 2,4,6-TCP peaked at 61 mg 2,4,6-TCP g VSS −1 h −1 when inoculated at the concentration of 400 mg L −1 . The extracellular polymeric substance (EPS) contents of the 2,4,6-TCP aerobic degrading granules were decreased compared with the contents in seed sludge. Two peaks attributed to the protein-like fluorophores were identified by three-dimensional excitation emission matrix (EEM) fluorescence spectra. The decrease of fluorescence parameters, e.g., peak locations, intensities, indicated quenching effect of 2,4,6-TCP on the EPS fluorescence. Meanwhile, the shift of peak position indicated chemical changes of the EPS. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09648305
- Volume :
- 95
- Database :
- Academic Search Index
- Journal :
- International Biodeterioration & Biodegradation
- Publication Type :
- Academic Journal
- Accession number :
- 98667104
- Full Text :
- https://doi.org/10.1016/j.ibiod.2014.03.019