Biodegradation kinetics of high strength oily pet food wastewater in a membrane-coupled bioreactor (MBR)

Kurian, R.; Nakhla, George; Bassi, Amarjeet

doi:10.1016/j.chemosphere.2006.03.050

Cited by 31 publications

(9 citation statements)

References 19 publications

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“…Based on the K S values from Table , it is clear that bioaugmented activated sludge has a higher affinity for degradation of the organic dissolved contaminants from the pharmaceutical wastewater than nonbioaugmented activated sludge. The increased values of decay constant k d in the experiments with bioaugmented activated sludge, with an average value of 0.0060 ± 0.0016 h −1 , indicate that the biodegradation process is enhanced, causing rapid shifts between the microorganism growth phases which shortens the duration of the biodegradation process . Inhibition constant K i indicates that inhibition is present in this kind of system, possibility due to the toxic impact of the substrate or metabolism intermediate compounds which decrease the biomass growth or enzyme activity .…”

Section: Resultsmentioning

confidence: 97%

“…In order to evaluate the biodegradability and have closer insight in microorganism behaviour within wastewater treatment, kinetics analysis could be performed. The emphasis in previous studies was primarily biodegradation of specific compounds or different kinds of industrial wastewater . To our knowledge, few studies have investigated real pharmaceutical wastewater with high organic load, where the focus of the research was mainly on activated sludge …”

Section: Introductionmentioning

confidence: 99%

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Bioaugmentation effect of Aeromonas hydrophila and Pseudomonas putida on kinetics of activated sludge process in treating pharmaceutical industrial wastewater

Domanovac

Runjavec

Meštrović

2019

J of Chemical Tech & Biotech

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BACKGROUND: Pharmaceutical industrial wastewater represents a challenge for biological treatment due to its complex composition. This research investigates the bioaugmentation effect of indigenous bacterial strains on the kinetics of the activated sludge process in the treatment of real high-strength pharmaceutical industrial wastewater.RESULTS: Two bacterial strains were isolated from pharmaceutical effluent and identified as Aeromonas hydrophila and Pseudomonas putida. The highest removal efficiency of dissolved organic matter from pharmaceutical wastewater was 71.43% within 24 h, obtained by bioaugmented activated sludge with P. putida, at the initial concentration of activated sludge 4.39 ± 0.37 g L −1 . The biokinetic parameters of the biodegradation process were calculated using the Endo-Haldane model, where bioaugmented activated sludge showed higher affinity to pharmaceutical wastewater. CONCLUSION: The biodegradation process of high-strength pharmaceutical wastewater showed enhancement through bioaugmentation of activated sludge with indigenous bacterial isolates. Considering the increasingly demand for pharmaceuticals on a global scale, the bioaugmentation potential of A. hydrophila and P. putida could contribute to enhancement of biodegradation through reduction in process time and environmental impact.

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Bioaugmentation effect of Aeromonas hydrophila and Pseudomonas putida on kinetics of activated sludge process in treating pharmaceutical industrial wastewater

Domanovac

Runjavec

Meštrović

2019

J of Chemical Tech & Biotech

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“…Membrane bioreactors (MBRs) combine the advantages of biological treatment and microfiltration processes to produce a high quality effluent in terms of bacteria, pathogens, turbidity, and low organic content (Cicek et al, 2001;Cicek, 2003;Baek et al, 2006;Ben Aim and Semmens, 2002;Liu et al, 2005;and Marrot et al, 2004). Although many MBR applications have been successfully tested during recent years, relatively little effort has been allocated to modeling the removal process that occurs in MBRs (Kurian et al, 2005); of particular interest is the applicability of the Monod kinetics model to the degradation of a low molecular weight organic acid. Organic acids such as acetic acid and malonic acid are common pollutants found in produced water (the wastewater generated during oil and gas production), and are also found in industrial wastewaters such as those generated at ethanol production facilities.…”

Section: Introductionmentioning

confidence: 99%

Degrading Malonate Waste in a Membrane Bioreactor: Modeling and Experiments

Garcia¹,

Kinney²,

Lawler³

2008

proc water environ fed

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Membrane bioreactors (MBRs) combine the advantages of biological treatment and microfiltration processes. MBRs have been successfully tested for many purposes including municipal and industrial wastewater. Although numerous research efforts involving MBRs have been performed, most have focused on the removal efficiency of the wastes being treated, rather than developing models that describe the biological and physical processes that occur in MBRs. The main objective of this research was to apply the standard biokinetic model used for conventional activated sludge to a MBR treating malonic acid, a short-chain organic acid contaminant found in industrial wastewater. A secondary objective was to test the MBR for its ability to degrade the same short-chain organic acid, since such organics can be difficult to degrade and are often intermediate products in the degradation of more complex compounds.The experimental values were fit to the standard biokinetic model for a conventional activated sludge process to obtain the biokinetic parameters: Y = 0.297 g active biomass/g malonic acid, k d = 0.331 d -1 , K s = 76.1 mg malonic acid / L, and k = 16.8 g malonic acid / g active biomass -d.The agreement between the model and experimental results suggests that the model (with its assumptions) is a reasonable description of the phenomena associated with a submerged MBR treating malonic acid. The removal efficiency of malonic acid in the MBR was always greater than 95%. KEYWORDSMembrane bioreactors (MBR), standard biokinetic model, Monod kinetics, short-chain organic acid, biokinetic parameters, malonic acid, malonate, and removal efficiency.

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“…Enzymatic degradation has the advantages of convenient operation, mild reaction conditions, high effi ciency, a wide operating range, and the elimination of recontamination, so it may be a good solution to the above problems in the treatment of oily wastewater. Furthermore, because of the high effi cacy of immobilized enzyme and the additive enhancement of enzymatic activity, the enzymatic degradation may be a promising economical procedure for industrial applications compared with the conventional physicochemical methods in treating emulsifi ed oily and dissolved oily wastewaters (Durán et al 2002;Kurian et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Research on the Application of Laccase to the Treatment of Oily Wastewater

Liu

Chen

et al. 2010

Water Quality Research Journal

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The feasibility of using laccase to treat oily wastewater was examined. When only laccase was added to the synthetic oily wastewater, the suitable technological conditions were laccase at 3 U/mL, pH at 6.0, a temperature of 30°C, and a reaction time of 6 h for the initial oil concentration of 120 mg/L. Under those conditions, the rate of oil removal was as high as 69%. The effects of Mg2+, Mn2+, Cu2+, and Fe2+ ions in wastewater on the rate of oil removal using laccase were investigated. The results showed that Cu2+and Fe2+ ions obviously inhibited the catalytic performance of laccase under the studied concentration. On the other hand, Mg2+ and Mn2+ ions only had slight effects on the rate of oil removal for the range of concentrations studied. A 95% oil removal rate could be obtained when actual wastewaters were treated using laccase with the additive chitosan under the suitable technological conditions.

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Biodegradation kinetics of high strength oily pet food wastewater in a membrane-coupled bioreactor (MBR)

Cited by 31 publications

References 19 publications

Bioaugmentation effect of Aeromonas hydrophila and Pseudomonas putida on kinetics of activated sludge process in treating pharmaceutical industrial wastewater

Bioaugmentation effect of Aeromonas hydrophila and Pseudomonas putida on kinetics of activated sludge process in treating pharmaceutical industrial wastewater

Degrading Malonate Waste in a Membrane Bioreactor: Modeling and Experiments

Research on the Application of Laccase to the Treatment of Oily Wastewater

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