The inhibitory effects of 2-CP and 2,4-DCP containing effluents on sequencing batch reactors

Preparation of Pd/GO/Ti electrode and its electrochemical degradation for 2,4-dichlorophenol

“…Therefore chlorophenols are defined as priority control pollutants in both Europe and China. Various degradation methods, such as physical chemical methods [3][4][5], biochemical methods [6,7] and chemical methods [8,9] to treat chlorophenols have been intensively studied by researchers. Moreover, combined treatments including physico-chemical, biological treatment [10][11][12][13][14] and light Fenton reagent oxidation treatment were often used simultaneously for better chlorophenol degradation rate, because chlorophenols were difficult to remove with a single means [15].…”

2,4-Dichlorophenol removal in a solid–liquid two phase partitioning bioreactor (TPPB): kinetics of absorption, desorption and biodegradation

“…DCP is a highly toxic compound characterized by EC 50 values in the range of 2.3-40 mg L À1 determined on Vibrio fisheri [7] and on a mixed culture [8], respectively. Few papers on DCP biodegradation have been published in the last decade, with the majority employing more complex operational strategies with respect to conventional suspended biomass reactors: that is, bioaugmentation of immobilized cultures [9], biostimulation [10], sludge granulation [11], air lift bioreactors using pure strains immobilized on a honeycomb-like ceramic carrier [12,13] and combinations of chemical and biological treatment [14].…”

Toxic Effects of Copper‐Based and Synthetic Organic Pesticides on Activated Sludge

“…Municipal wastewater treatment systems that are likely to receive relatively high concentrations of pesticides should be considered carefully and the most effective treatment alternative should be applied. In such conditions sequencing batch reactors (SBRs) appear to be beneficial alternatives in handling toxic effluents owing to flexible operational conditions and cost effectiveness 15, 24–26. The SBR system is advantageous over other types of activated treatment systems owing an enzyme inducting capacity required for degrading of bio refractory compounds such as pesticides.…”

“…The EC 50 values of the pesticides were determined by a modified OECD 209 method 14. The EC 50 determination procedure has been presented in detail elsewhere 15. Appropriate quantities of cell suspension and OECD substrate solution were added to two 500‐mL vessels to give a cell and substrate soluble chemical oxygen demand (SCOD) concentrations of approximately 75 and 375 mg/L, respectively, in the applied modified OECD 209 procedure.…”