Application of rhamnolipid as a novel biodemulsifier for destabilizing waste crude oil

Long, Xuwei; Zhang, Guoliang; Shen, Chong; Sun, Guansong; Rui-xu, Wang; Yin, Lujiang; Meng, Qin

doi:10.1016/j.biortech.2012.12.128

Cited by 101 publications

(40 citation statements)

References 33 publications

(33 reference statements)

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“…In another report, 56% and 73% of the aliphatic and aromatic hydrocarbons, respectively, were recovered from contaminated sandy-loam soil when treated with Rhamnolipids [76]. The ability of rhamnolipids biosurfactants to emulsify hydrocarbon-water mixtures, degrade hydrocarbons in oil spill management, and remediate metal contaminated soil has been well documented [77][78]. There are several strategies involving the use of biosurfactants like rhamnolipids in (MEOR), such as injection of biosurfactants-producing microorganisms into a reservoir through the well, with subsequent propagation in situ through the reservoir rock; or injection of selected nutrients into a reservoir, thus stimulating the growth of indigenous biosurfactants-producing microorganisms; while the other mechanism involves the production of rhamnolipids in bioreactors ex situ and subsequent injection into the reservoir.…”

Section: Rhamnolipids In Oil Industrymentioning

confidence: 99%

The Definition, Preparation and Application of Rhamnolipids as Biosurfactants

Kamal-Alahmad¹

2015

IJNFS

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Rhamnolipids mainly are produced by Pseudomonas aeruginosa and another microorganism that have been found to have good surface activity. Rhamnolipids are used in various application areas, including environmental, health, food, cosmetic, oil industries, pharmaceuticals and environmental bio remediation particularly in enhanced oil recovery (EOR) and cleaning of oil spills. Many kinds of bio surfactant such as, rhamnolipids are already being used in industry but it is important to develop indigenous technology for the production of rhamnolipids produced by the microorganisms of local origin which would be more suitable for the application to that specific areas. Rhamnolipids have several beneficial uses: they are easily degradable, nontoxic, nonmutagenic, and have the highest surface-tension-reduction index of any surface-tension reducing agent currently in use. In this review, I summarize the definition, preparation, properties, and the application in different areas especially in food and agriculture, and industrial potential of rhamnolipids, as the next generation of biosurfactants.

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Section: Rhamnolipids In Oil Industrymentioning

confidence: 99%

The Definition, Preparation and Application of Rhamnolipids as Biosurfactants

Kamal-Alahmad¹

2015

IJNFS

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“…The results of previous studies were congruent with ours; rhamnolipids produced from the strains had a higher emulsifier quality for benzene, n-hexane, and benzene, relative to xylene. In a study conducted by Long et al (2013b), it was found that the presence of rhamnolipid at a medium concentration of 1000 mg/L made 40% of water precipitate from waste crude oil.…”

Section: Emulsification Activity and Cell Surface Hydrophobicitymentioning

confidence: 99%

Production of biosurfactant by Pseudomonas spp. isolated from industrial waste in Turkey

Kaya¹,

Aslım²,

Kariptaş³

2014

Turk J Biol

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In this study, 26 Pseudomonas spp. were isolated from a stream polluted by factory waste and from petroleum-contaminated soil. The surface tension (ST) of the cultures was used as a criterion for the primary isolation of biosurfactant-producing bacteria. Biosurfactant production was quantified by ST reduction, critical micelle concentration (CMC), emulsification capacity (EC), and cell surface hydrophobicity (CSH). Two of the isolates, P. aeruginosa 78 and 99, produced rhamnolipid biosurfactant. The strains started rhamnolipid production in the logarithmic phase. They decreased the ST of the culture from 73 dyne/cm 2 to 29 and 33 dyne/cm 2 , and the CMC of produced rhamnolipids were 115 and 130 mg/L, respectively. P. aeruginosa 78 and 99 strains emulsified benzene and n-hexane at the highest rates, and the surfaces of these strains were 73% and 65% and 62% and 72% more hydrophobic for benzene and toluene, respectively.

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“…This recovery method has not been reported widely in the literatures. Surfactants treatment on the other hand, has been widely reported [19][20][21][22][23][24][25]. Surfactants are generally amphiphilic compounds, having a hydrophobic end and a hydrophilic end.…”

Section: Introductionmentioning

confidence: 99%

“…% Oil extracted = M oil 25.00 * 100 (7) The data obtained from the variation of the blend composition were subjected to descriptive statistics.…”

Section: Volumementioning

confidence: 99%

Solvent Blend Performance in Hydrocarbon Recovery from Nigerian Tank Bottom Sludge

Taiwo

Otolorin

2016

IJET

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Abstract. Oil sludge waste associated with crude oil production generally consists of oil, sands and untreatable emulsions segregated from the production stream, and sediment accumulated on the bottom of crude oil and water storage tanks. The use of single solvent and combination (solvent blend) was evaluated for extraction of hydrocarbon content (oil) of the Tank Bottom Sludge (TBS) associated with the crude oil production with a view to optimizing hydrocarbon recovery from the sludge. TBS samples were contacted with selected solvents blends of varying volumetric ratios, each at a time. The blend generated from xylene, hexane, cyclohexane and petroleum ether representing aliphatic and aromatic interactive combination with varying polarity. Their effects on the oil recovery from tank bottom sludge were determined, with solubility parameter as a factor. The optimum oil recovery by blend A, B and C at room temperature of 29 o C, from sample 1 are respectively 54.48% (3:2), 60.33% (2:3) and 61.10% (1:1); from Sample 2, were respectively 66.25% (2:3), 60.80 (3:2) and 63.35 (1:1) at room temperature of 29 o C. At room temperature Blend C has the highest performance in extracting oil from sample 1. The highest performance in recovery of oil from sample 2 was observed with blend A (66.25 %). Solvent extraction process is very effective in recovering hydrocarbons oil from TBS. The use of solvents mixture greatly improved oil recovery from TBS and varies with blend composition and the operating temperature condition.

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Application of rhamnolipid as a novel biodemulsifier for destabilizing waste crude oil

Cited by 101 publications

References 33 publications

The Definition, Preparation and Application of Rhamnolipids as Biosurfactants

The Definition, Preparation and Application of Rhamnolipids as Biosurfactants

Production of biosurfactant by Pseudomonas spp. isolated from industrial waste in Turkey

Solvent Blend Performance in Hydrocarbon Recovery from Nigerian Tank Bottom Sludge

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