Effect of protein hydrolysate on the degradation of diesel fuel in soil☆

Harrison, A.B.; Ripley, M.B.; Dart, R.K.; Betts, W. B.; Wilson, Anna

doi:10.1016/s0141-0229(99)00162-3

Cited by 8 publications

(7 citation statements)

References 14 publications

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“…1998). The present study extends work by Harrison et al . (2000) using protein hydrolysate foams for diesel degradation and confirms that the hydrolysate continues to act as a nutrient source when applied as a foam rather than as a liquid.…”

Section: Discussionsupporting

confidence: 92%

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Mechanisms for enhanced biodegradation of petroleum hydrocarbons by a microbe-colonized gas-liquid foam

et al. 2002

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Aims: A microbe‐colonized gas–liquid foam formulation has been previously shown to provide enhanced biodegradation capabilities in soil microcosms. The present study considers the reservoir properties of this foam and how this affects hydrocarbon degradation rates. Methods and Results: Oxygen solubility in protein hydrolysate solutions draining from aerated and oxygenated foams was measured. The suitability of oxygenated foam to enhance the degradation of n‐hexadecane in soil microcosms was assessed. Sorption of bacterial isolates at the gas–liquid interface was also investigated using a range of microscopy techniques. Conclusions: Oxygenated bioactive foam enhanced biodegradation rates by improving oxygen availability and transfer. Biodegradation of n‐hexadecane was also stimulated by the protein hydrolysate used and by the inclusion of known bacterial hydrocarbon‐degrading bacteria. The interaction of bacteria with the gas–liquid interface was shown to be a significant factor governing the drainage of the bacteria from the bioactive foam. Significance and Impact of the Study: Protein hydrolysate‐based bioactive foam may be a suitable treatment technology to enhance the biodegradation of petroleum hydrocarbons in soil.

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Section: Discussionsupporting

confidence: 92%

“…A second property of the foam is the release onto soil of nutrients, oxygen and microbes in a controlled manner. Previous observations indicated that the protein hydrolysate provides a nutrient source, stimulating the growth of hydrocarbon‐degrading bacteria (Harrison et al . 2000).…”

Section: Discussionmentioning

confidence: 99%

Mechanisms for enhanced biodegradation of petroleum hydrocarbons by a microbe-colonized gas-liquid foam

et al. 2002

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“…This is particularly true with nitrogen in the form of hydrolysed proteins [38] and it confirms that hydrolysates act as nutrient sources to enhance the biodegradation of petroleum hydrocarbon in soil. WCDS-EE increased the petroleum hydrocarbon biodegradation rate more efficiently than did WCDS.…”

Section: Discussionmentioning

confidence: 58%

Enzymatic production of an organic soil biostimulant from wheat-condensed distiller solubles: Effects on soil biochemistry and biodiversity

García-Martínez

Díaz

Tejada

et al. 2010

Process Biochemistry

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“…Assuming that microbes are present, nutrient availability, especially of nitrogen and phosphorus, appears to be the most common limiting factor (494,526). Laboratory and field experiments with inorganic nitrogen and phosphate fertilizers and organic fertilizers, including fish bones, fish or animal meal, biosurfactants, and bulking agents, have shown success (68,241,371,372,428,446,458,512,635,640).…”

Section: Treatment Of Contaminated Soils and Sludgesmentioning

confidence: 99%

Recent Advances in Petroleum Microbiology

Hamme¹,

Singh

Ward

2003

Microbiol Mol Biol Rev

1,193

640

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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

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Effect of protein hydrolysate on the degradation of diesel fuel in soil☆

Cited by 8 publications

References 14 publications

Mechanisms for enhanced biodegradation of petroleum hydrocarbons by a microbe-colonized gas-liquid foam

Mechanisms for enhanced biodegradation of petroleum hydrocarbons by a microbe-colonized gas-liquid foam

Enzymatic production of an organic soil biostimulant from wheat-condensed distiller solubles: Effects on soil biochemistry and biodiversity

Recent Advances in Petroleum Microbiology

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