Biosurfactant-enhanced hydrocarbon bioremediation: An overview

Souza, Elias Costa de; Vessoni-Penna, Thereza Christina; Oliveira, Ricardo Pinheiro de Souza

doi:10.1016/j.ibiod.2014.01.007

Cited by 306 publications

(139 citation statements)

References 31 publications

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“…At the outset, when discharged into soil, the volatility of hydrocarbons can lead to fire or even hazardous outbursts, particularly when fumes enter restrained places (Souza et al, 2014). Secondly, contaminants can adsorb on soil particles and be retained in soil for years thus leading to land degradation.…”

Section: Crude Oil and Environmental Pollutionmentioning

confidence: 99%

Plant-bacteria synergism: An innovative approach for the remediation of crude oil-contaminated soils

Fatima¹,

Imran²,

Naveed³

et al. 2017

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Section: Crude Oil and Environmental Pollutionmentioning

confidence: 99%

Plant-bacteria synergism: An innovative approach for the remediation of crude oil-contaminated soils

Fatima¹,

Imran²,

Naveed³

et al. 2017

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“…Hydrocarbons are toxic, carcinogenic and mutagenic for humans (Souza et al, 2014). From the discovery of the genus Acinetobacter, degradation activity of crude oil was also observed (Breuil et al, 1975).…”

Section: Biodegradation Of Crude Oil By Fermentation Brothmentioning

confidence: 99%

Industrial-scale culturing of the crude oil-degrading marine Acinetobacter sp. strain HC8-3S

Liu

Liu³

2016

International Biodeterioration & Biodegradation

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a b s t r a c tThe marine bacterium Acinetobacter sp. strain HC8-3S, capable of degrading petroleum hydrocarbons, was previously shown to be applicable for bioremediation. Here, we evaluated the performance of the strain during industrial-scale fermentation, long-term storage, and biodegradation processes. Fermentation parameters were optimized for industrial-scale culturing using lower salinity and fewer inorganic salts in the culture medium. The shelf-life of the fermentation broth was evaluated in different storage conditions. Biodegradation efficiency of the strain was evaluated using gas chromatography. Results indicated that the optimum conditions for one-ton scale fermentation were 30 C, pH 7.4e7.8, and rotation speed 90 rpm; the cell density reached 3.6 ± 1.9 Â 10 10 CFU ml À1 after 12 h. The low temperature can preserved fermentation broth for longer time. When the storage temperature was down to 4 C from room temperature, half-life of strain HC8-3S extended from 9 days to 34 days. The biodegradation rate of the saturated hydrocarbon fraction of crude oil was 94% after treatment with the strain for 5 days. The results indicate that Acinetobacter sp. strain HC8-3S can be enriched efficiently on a large scale, making it a potentially useful industrial strain. This crude oil degradative capability of the strain HC8-3S provides possible application for the clean-up of crude oil-contaminated environment.

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“…In several environments like sea, mangrove sediments or soil polluted with oil hydrocarbon or pesticides, the microorganisms produce biosurfactants, mainly when they are exposed to low solubility carbon sources [5]. In vitro conditions, is known that an excess in carbon source (by example glucose, glicerol or frying oils used) and stress with low levels of nitrogen, promotes rhamnolipids production [6].…”

Section: Role Of Biosurfactants In Naturementioning

confidence: 99%

Role of Biosurfactants in Nature, and Biotechnological Applications

Yáñez-Ocampo¹

2016

JBMOA

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In nature, biosurfactants are amphiphilic molecules, capable to emulsify and decrease surface tension water, mainly glycolipids are the most known and studied produced by Pseudomonas aeruginosa. These compounds are produced by microorganisms (bacteria, actinomycetes and fungi) who has genes, metabolic pathways and as a consequence are physiologically adapted in order to uptake organic matter non-soluble. Recently, the interest for its biotechnological production has increased, because of their environmental, industrial, and pharmaceutical applications, and others. Through microbial biodiversity exploration, on terrestrial or aquatic environments polluted with persistant organic compounds non-soluble in water, is possible to isolate microorganisms with tensoactive properties and capable to biodegrade pollutants. This can be done by use of selective culture media, tensoactive tests and molecular tools. Biosurfactants are promising products and actually some commercial products are applied and patented.

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Biosurfactant-enhanced hydrocarbon bioremediation: An overview

Cited by 306 publications

References 31 publications

Plant-bacteria synergism: An innovative approach for the remediation of crude oil-contaminated soils

Plant-bacteria synergism: An innovative approach for the remediation of crude oil-contaminated soils

Industrial-scale culturing of the crude oil-degrading marine Acinetobacter sp. strain HC8-3S

Role of Biosurfactants in Nature, and Biotechnological Applications

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