Enhancing Biodegradation of Petroleum Hydrocarbons with Guanidinium Fatty Acids

Nelson, Eryn; Walter, M. V.; Bossert, Ingeborg D.; Martin, David G.

doi:10.1021/es9509036

Cited by 19 publications

(10 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Predictive models for estimating the extent of petroleum hydrocarbon biodegradation (268) and diffusion-controlled bioavailability of crude oil components (621) have been developed. Properly chosen chemical surfactants may enhance biodegradation (79,80,453,529,634). The efficiency of processes for degradation of hydrocarbons will also depend on the nature of the hydrocarbon-contaminated material, the environmental conditions, and the characteristics of the microbial population that is present.…”

Section: Treatment Of Contaminated Soils and Sludgesmentioning

confidence: 99%

Recent Advances in Petroleum Microbiology

Hamme¹,

Singh

Ward

2003

Microbiol Mol Biol Rev

1,170

628

View full text Add to dashboard Cite

Recent advances in molecular biology have extended our understanding of the metabolic processes related to microbial transformation of petroleum hydrocarbons. The physiological responses of microorganisms to the presence of hydrocarbons, including cell surface alterations and adaptive mechanisms for uptake and efflux of these substrates, have been characterized. New molecular techniques have enhanced our ability to investigate the dynamics of microbial communities in petroleum-impacted ecosystems. By establishing conditions which maximize rates and extents of microbial growth, hydrocarbon access, and transformation, highly accelerated and bioreactor-based petroleum waste degradation processes have been implemented. Biofilters capable of removing and biodegrading volatile petroleum contaminants in air streams with short substrate-microbe contact times (<60 s) are being used effectively. Microbes are being injected into partially spent petroleum reservoirs to enhance oil recovery. However, these microbial processes have not exhibited consistent and effective performance, primarily because of our inability to control conditions in the subsurface environment. Microbes may be exploited to break stable oilfield emulsions to produce pipeline quality oil. There is interest in replacing physical oil desulfurization processes with biodesulfurization methods through promotion of selective sulfur removal without degradation of associated carbon moieties. However, since microbes require an environment containing some water, a two-phase oil-water system must be established to optimize contact between the microbes and the hydrocarbon, and such an emulsion is not easily created with viscous crude oil. This challenge may be circumvented by application of the technology to more refined gasoline and diesel substrates, where aqueous-hydrocarbon emulsions are more easily generated. Molecular approaches are being used to broaden the substrate specificity and increase the rates and extents of desulfurization. Bacterial processes are being commercialized for removal of H2S and sulfoxides from petrochemical waste streams. Microbes also have potential for use in removal of nitrogen from crude oil leading to reduced nitric oxide emissions provided that technical problems similar to those experienced in biodesulfurization can be solved. Enzymes are being exploited to produce added-value products from petroleum substrates, and bacterial biosensors are being used to analyze petroleum-contaminated environments

show abstract

Section: Treatment Of Contaminated Soils and Sludgesmentioning

confidence: 99%

Recent Advances in Petroleum Microbiology

Hamme¹,

Singh

Ward

2003

Microbiol Mol Biol Rev

1,170

628

View full text Add to dashboard Cite

show abstract

“…By reducing interfacial tensions, surfactants can mobilize NAPLs (1). Surfactants can also affect natural microbial populations in the subsurface (4,12,(20)(21)(22).…”

Section: Introductionmentioning

confidence: 99%

Surfactant-Enhanced Remediation of a Trichloroethene-Contaminated Aquifer. 1. Transport of Triton X-100

Smith

Sahoo

McLellan

et al. 1997

Environ. Sci. Technol.

View full text Add to dashboard Cite

Transport of a nonionic surfactant (Triton X-100) at aqueous concentrations less than 400 mg/L through a trichloroethene-contaminated sand-and-gravel aquifer at Picatinny Arsenal, NJ, has been studied through a series of laboratory and field experiments. In the laboratory, batch and column experiments were conducted to quantify the rate and amount of Triton X-100 sorption to the aquifer sediments. In the field, a 400 mg/L aqueous Triton X-100 solution was injected into the aquifer at a rate of 26.5 L/min for a 35-d period. The transport of Triton X-100 was monitored by sampling and analysis of groundwater at six locations surrounding the injection well. Equilibrium batch sorption experiments showed that Triton X-100 sorbs strongly and nonlinearly to the field soil with the sharpest inflection point of the isotherm occurring at an equilibrium aqueous Triton X-100 concentration close to critical micelle concentration. Batch, soil column, and field experimental data were analyzed with zero-, one-, and two-dimensional (respectively) transient solute transport models with either equilibrium or rate-limited sorption. These analyses reveal that Triton X-100 sorption to the aquifer solids is slow relative to advective and dispersive transport and that an equilibrium sorption model cannot simulate accurately the observed soil column and field data. Comparison of kinetic sorption parameters from batch, column, and field transport data indicate that both physical heterogeneities and Triton X-100 mass transfer between water and soil contribute to the kinetic transport effects.

show abstract

“…The bacterial populations proliferated with natural organics enhanced the degradation of two chloro-and a nitro-herbicides (Moorman et al 2001). Moreover, Nelson et al (1996) observed faster degradation of hydrocarbon in soil with the help of soap-like fatty acids.…”

Section: Introductionmentioning

confidence: 98%

Biodegradation of BTE in soil by indigenous microbial populations with and without biogenic substrates

Chong

Chiou

2010

World J Microbiol Biotechnol

View full text Add to dashboard Cite

Degradation of benzene, toluene, and ethylbenzene (BTE) by microbial populations indigenous to the soil and populations proliferated from the indigenous using biogenic substrates were compared. The reaction system consisted of aerobic microcosms representing an unsaturated soil. Microcosms supplemented with glucose and citrate, when compared to the unsupplemented microcosms, showed increases in bacterial counts, but the overall degradation rates for B, T, or E were reduced in spite of shorter lag times. Both biogenic substrate supplements were non-beneficial for BTE degradation due largely to the preferential and healthy growth of the indigenous populations on the biogenic substrates, and thus the urgency of developing a favorable amount of BTE degraders was reduced.

show abstract

Enhancing Biodegradation of Petroleum Hydrocarbons with Guanidinium Fatty Acids

Cited by 19 publications

References 7 publications

Recent Advances in Petroleum Microbiology

Recent Advances in Petroleum Microbiology

Surfactant-Enhanced Remediation of a Trichloroethene-Contaminated Aquifer. 1. Transport of Triton X-100

Biodegradation of BTE in soil by indigenous microbial populations with and without biogenic substrates

Contact Info

Product

Resources

About