Kinetics of model high molecular weight organic compounds biodegradation in soil aquifer treatment

Fox, Peter; Makam, Roshan

doi:10.1016/j.watres.2011.05.023

Cited by 8 publications

(4 citation statements)

References 12 publications

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“…Consequently, there is an urgent need to explore the reason for the decline in removal efficiency in SAT systems. The main factors influencing the efficiency of SAT operation include initial pollutant concentration, vadose zone lithology, wet/dry ratio, and hydraulic loading rate (Fox & Makam, 2011). Most research has focused on the natural non‐bioaugmented SAT system, rather than the bioaugmented SAT (Adhikari et al., 2014; Ben Moshe et al., 2021; Pavelic et al., 2011).…”

Section: Introductionmentioning

confidence: 99%

Design of a bioaugmented soil aquifer treatment for efficient removal of p‐nitrophenol

Shi

Yang

Lü

et al. 2023

Vadose Zone Journal

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Secondary effluent reclamation and reuse is an effective solution to the water shortage problem, and the safety of reused water is a matter of increasing concern.p-Nitrophenol (PNP), a common secondary effluent pollutant, can be efficiently removed using the eco-friendly bioaugmented soil aquifer treatment (SAT) system at the laboratory scale. In this study, a sewage treatment plant in Changchun was selected as a case study to apply the bioaugmented SAT system for field scenarios efficiently. The bioaugmented SAT system was simulated using HYDRUS-1D code. Biodegradation and adsorption coefficient were conducted from the batch experiment. Based on the degradation experiments, the concentration of bacteria injected into SAT system was designed to be 6 × 10 18 colony-forming units (CFU) m −3 . To enhance the efficiency of the bioaugmented SAT system, the key parameters were optimized based on the sensitivity analysis and the response surface methodology, which showed that the optimal operating conditions were an initial concentration of 86.11 mg L −1 , a medium of 4.27-m thickness, and a wet/dry ratio of 0.28. Specifically, alternated wetting-drying conditions and increasing the medium thickness reduced PNP within a specific range. This work demonstrates the performance and applicability of the bioaugmented SAT system for removal PNP in secondary sewage effluent.

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Section: Introductionmentioning

confidence: 99%

Design of a bioaugmented soil aquifer treatment for efficient removal of p‐nitrophenol

Shi

Yang

Lü

et al. 2023

Vadose Zone Journal

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“…For comparison, Lake Elsinore, southern California's largest natural lake, can store 51.4 × 10 6 m 3 (41,700 acre‐feet) and Lake Shasta, California's largest reservoir, can store 5.6 × 10 9 m 3 (4.5 million acre‐feet). Furthermore, storing water in groundwater aquifers reduces evaporation losses (Kazner et al 2012), prevents saltwater intrusion in coastal regions (Sherif and Hamza 2001; Khadra et al 2017), and improves water quality through soil aquifer treatment (Drewes 2009; Dillon et al 2010; Fox and Makam 2011).…”

Section: Introductionmentioning

confidence: 99%

Distributed Temperature Sensing to Measure Infiltration Rates Across a Groundwater Recharge Basin

Medina¹,

Pham²,

Plumlee

et al. 2020

Groundwater

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Managed aquifer recharge is used to augment groundwater resources and provide resiliency to water supplies threatened by prolonged droughts. It is important that recharge facilities operate at their maximum efficiency to increase the volume of water stored for future use. In this study, we evaluate the use of distributed temperature sensing (DTS) technology as a tool to measure high‐resolution infiltration rates at a large‐scale recharge facility. Fiber optic cable was laid out inside a spreading basin in a spiral pattern, at two different depths. The cables measured the propagation of diurnal surface water temperature oscillations into the basin depth. The rate of heat propagation is proportional to the velocity of the water, making it possible to estimate the infiltration rate from the temperature measurements. Our results showed that the infiltration rate calculated from DTS, averaged over the entire basin, was within 5% of the infiltration rate calculated using a conventional metering method. The high‐resolution data obtained from DTS, both spatially and temporally, revealed heterogeneous infiltration rates throughout the basin; furthermore, tracking the evolution of infiltration rates over time revealed regions with consistently high infiltration rates, regions with consistently low infiltration rates, and regions that evolved from high to low rates, which suggested clogging within that region. Water utilities can take advantage of the high‐resolution information obtained from DTS to better manage recharge basins and make decisions about cleaning schedule, frequency, and extent, leading to improved basin management strategies, reduced O&M costs, and increased groundwater recharge.

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“…Thus Monod rates may be used to evaluate the biodegradation extent of groups of analogous substrates based on preferences for chain length or spatial distribution of functional groups attached . Such is the case when using Monod kinetics to predict the biodegradation of high molecular weight chemicals in laboratory‐scale experiments . In real environmental settings, growth of microorganisms may not be controlled only by a single substrate.…”

Section: Introductionmentioning

confidence: 99%

“…13 Such is the case when using Monod kinetics to predict the biodegradation of high molecular weight chemicals in laboratory-scale experiments. 14 In real environmental settings, growth of microorganisms may not be controlled only by a single substrate. Monod kinetics relates complex processes in which many enzyme systems are related to growth and substrate utilization, which in turn, can be quantitatively assessed by the yield coefficient.…”

Section: Introductionmentioning

confidence: 99%

The Monod and a biphasic biodegradation kinetics of diesel hydrocarbons by a biofilm of Pseudomonas and the potential electromotive force involved

Acuña‐Askar

Pecina-Chacon

Mas-Trevino³

et al. 2014

J of Chemical Tech & Biotech

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BACKGROUND Two kinetic models for diesel degradation in a continuous‐flow reactor at a retention time of 1.5 h were compared. One model included the Monod equation and the other, a biphasic model, did not involve Monod parameters. The experiment included two Pseudomonas species. A thermodynamic study on the nitrate‐reducing degradation of diesel was performed in addition to a BOD5 /COD ratio to evaluate the biodegradability of both the diesel components and their residual concentrations. RESULTS The Monod model revealed that both μmax,h and italicKShfor the C10–C18 chains were 2.5‐fold and 11‐fold, respectively, lower than those of chains C20–C22. The biphasic model failed to detect the influent concentration range at which the biofilm slowed down processing the substrates. The shifts of the influent‐to‐effluent BOD5/COD ratios from 0.67 to 0.80 and from 0.80 to 0.95, for the lowest and highest substrate concentrations, respectively, confirmed that residuals in the effluent can be degraded. Stoichiometric calculations for C10–C22 revealed theoretical spontaneous release of Gibbs free energies from –6.89 to –70.27 kJ, and electromotive forces from 4.4 to 45.51 mV for both the lowest and highest diesel concentrations, respectively. CONCLUSION The influent diesel concentration interval of 1008–1344 mg L−1 was the range over which the maximum utilization rates of chains C10–C22 decreased from 1.12 to 0.57 vss−1 due to the inhibitory action of chains C10–C18 (P<0.05). Following the degradation of diesel, the organic residuals left in the effluent can be easily assimilated. The nitrate‐reducing degradation was able to produce an electromotive force spontaneously. © 2014 Society of Chemical Industry

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Kinetics of model high molecular weight organic compounds biodegradation in soil aquifer treatment

Cited by 8 publications

References 12 publications

Design of a bioaugmented soil aquifer treatment for efficient removal of p‐nitrophenol

Design of a bioaugmented soil aquifer treatment for efficient removal of p‐nitrophenol

Distributed Temperature Sensing to Measure Infiltration Rates Across a Groundwater Recharge Basin

The Monod and a biphasic biodegradation kinetics of diesel hydrocarbons by a biofilm of Pseudomonas and the potential electromotive force involved

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