Enhancement of Profenofos Remediation Using Stimulated Bioaugmentation Technique
-
Sumana Siripattanakul-Ratpukdi
,
Alisa S. Vangnai
Abstract
Profenofos, an organophosphorus pesticide, has been reported its contamination in groundwater. The current study emphasized on the use of integrated bioaugmentation and biostimulation techniques to enhance profenofos bioremediation. A profenofos-degrading consortium including Pseudomonas strains was chosen as a bioaugmented culture. For stimulated condition adjustment, sodium succinate as an additional organic carbon supplement (4-500 mg-carbon/L) was applied in batch experiment. Column experiment was carried out for investigating profenofos remediation with different infiltration rates and cell numbers of 25 to 100 cm/d and 105 and 1015 CFU/mL, respectively. The batch result showed that the experiment with sodium succinate supplement efficiently degraded profenofos of more than 80%. At profenofos concentrations of 20 to 120 mg/L, the profenofos degradation ranged from 85 to 91%. For the column experiment, profenofos removal was between 30 to more than 90%. The infiltration rates and microbial numbers significantly affected the profenofos degradation. Lower infiltration rates or higher cell number resulted in higher profenofos removal performance. Based on the result from this study, it indicated that the profenofos degradation by the bioaugmented consortium under stimulated condition is effective and potential for future remediation practice.
Acknowledgement
The authors would like to thank Research Center for Environmental and Hazardous Substance Management, Khon Kaen University, Khon Kaen, Thailand and Research Program in Hazardous Substance Management in Agricultural Industry, Center of Excellence on Hazardous Substance Management (HSM), Thailand for financial supports and equipment supply. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the grant agencies.
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Articles in the same Issue
- Editorial
- Excitation Kinetics of Oxygen O(1D) State in Low-Pressure Oxygen Plasma and the Effect of Electron Energy Distribution Function
- Using amino-functionalized Fe3O4-WO3 nanoparticles for diazinon removal from synthetic and real water samples in presence of UV irradiation
- Treatment of high salinity wastewater using CWPO process for reuse
- Electrochemical Advanced Oxidation Processes (EAOP) to degrade per- and polyfluoroalkyl substances (PFASs)
- Effect of feedstock impurities on activity and selectivity of V-Mo-Nb-Te-Ox catalyst in ethane oxidative dehydrogenation
- Photocatalytic Degradation of Azo Dyes Over Semiconductors Supported on Polyethylene Terephthalate and Polystyrene Substrates
- Effects of calcination temperature on sol-gel synthesis of porous La2Ti2O7 photocatalyst on degradation of Reactive Brilliant Red X3B
- ClO2-oxidation-based demulsification of oil-water transition layer in oilfields: An experimental study
- Semi-permanent hair dyes degradation at W/WO3 photoanode under controlled current density assisted by visible light
- Degradation of PVA (polyvinyl alcohol) in wastewater by advanced oxidation processes
- Degradation of imidacloprid insecticide in a binary mixture with propylene glycol by conventional fenton process
- Gemini surfactant-assisted synthesis of BiOBr with superior visible light-induced photocatalytic activity towards RhB degradation
- Photocatalytic paraquat degradation over TiO2 modified by hydrothermal technique in alkaline solution
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- Mechanistic insight on the sonolytic degradation of phenol at interface and bulk using additives
- Biosolubilization of low-grade rock phosphate by mixed thermophilic iron-oxidizing bacteria
- Degradation of methyl orange using dielectric barrier discharge water falling film reactor
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