Bioaugmentation of a rotating biological contactor for degradation of 2-fluorophenol

Abstract

The performance of a laboratory scale rotating biological contactor (RBC) towards shock loadings of 2-fluorophenol (2-FP) was investigated. During a period of ca. 2 months organic shock loadings of 25 mg L⁻¹ of 2-FP were applied to the RBC. As no biodegradation of 2-FP was observed, bioaugmentation of the RBC with a 2-FP degrading strain was carried out and, along ca. 6 months, organic shock loadings within a range of 25-200 mg L⁻¹ of 2-FP were applied. Complete biodegradation of 50 mg L⁻¹ of 2-FP was observed during operation of the reactor. The RBC showed to be robust towards starvation periods, as after ca. 1month of non-supply of the target compound, the reactor resumed 2-FP degradation. The inoculated strain was retained within the biofilm in the disks, as the 2-FP degrading strain was recovered from the biofilm by the end of the experiment, thus bioaugmentation was successfully achieved.

Performance and microbial analysis of a biotrickling filter inoculated by a specific bacteria consortium for removal of a simulated mixture of pharmaceutical volatile organic compounds

“…by Hu et al 14 wool-compost biofilters [32]. Burkholderia was previously found to degrade pyrene, benzanthracene and chloroform [33,34].…”

“…For recalcitrant compounds, poor bioreactor performance may be due to the lack of sufficient number of a specific microorganism harboring a key metabolic route to transform the target contaminant into less harmful end products. The process of adding selected strains/mixed cultures to biological systems is a promising technique to improve the catabolism of recalcitrant compounds and further enhance removal efficiency [13][14].…”

The biodegradation vs. biotransformation of fluorosubstituted aromatics

“…Substrate concentrations of more than 50 mg/l inhibited degradation of 2-fluorophenol by this sludge as well as by a reactor bioaugmented with Rhodococcus sp. strain FP1 (Duque et al 2011).…”

Enhancing the removal of pollutants from coke wastewater by bioaugmentation: A scoping study

“…Bioaugmentation and biostimulation, therefore, offer different routes by which an activated sludge process (ASP) can be upgraded to treat persistent pollutants. Bioaugmentation has been demonstrated to successfully improve the treatment of many industrial wastewaters, whilst biostimulation has been reported to be important in nutrient‐limited industrial wastewaters …”

“…Bioaugmentation has been demonstrated to successfully improve the treatment of many industrial wastewaters, whilst biostimulation has been reported to be important in nutrient-limited industrial wastewaters. [3][4][5][6][7][8] Coke wastewaters are formed in the production of coke, used in steel manufacturing, and originate from the quenching of hot coke masses, washing of ammonia stills, and cooling and washing of coke oven gases. 9 Coke wastewaters contain a mixture of nitrogenous compounds and organic compounds, the concentrations of which are highly variable in response to the composition of the coals used in the coke ovens and the operational conditions.…”