Fuel recovery from waste oily sludge using solvent extraction

Zubaidy, Essam A.H. Al; Abouelnasr, Dana

doi:10.1016/j.psep.2010.04.001

Cited by 207 publications

(115 citation statements)

References 13 publications

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“…Zubaidy and Abouelnasr [16] reported the highest oil recovery of 39% and 32% using MEK and LPGC in solvent extraction of hydrocarbon oil from TBS. Also, Chang et al [8] observed a maximum production rate of 51.61 wt.% of PHCs hydrocarbons (mainly low-molecular-weight paraffins and olefins,) at 440 •C, using pyrolysis process to treat oily sludge.…”

Section: Resultsmentioning

confidence: 99%

“…Several methods developed for recycling hydrocarbons from oily sludge include, among others, solvent extraction, centrifugation, surfactant treatment, pyrolysis and froth floatation [3,[8][9][10][11][12][13][14][15][16][17][18]. Solvent extraction process mixes oily wastes with solvent at desired proportions, ensures complete miscibility, and the water, solid and carbonaceous impurities are selectively rejected by the extracting solvent.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, solvent extraction represents a simple but efficient method to separate oily sludge into valuable hydrocarbon and a solid or semi-solid residue with reduced volume. Various solvents such as, turpentine, methyl ethyl ketone (MEK), liquefied petroleum gas condensate (LPGC), naphtha cut, kerosene cut, n-heptane, toluene, methylene dichloride, ethylene dichloride, hexane, xylene and diethyl ether have been reported for oily sludge treatment [12,15,16,27,28]. However, there is dearth of information on the recovery efficiency of a blend of these solvents.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Solvent Blend Performance in Hydrocarbon Recovery from Nigerian Tank Bottom Sludge

Taiwo

Otolorin

2016

IJET

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“…Solvent extraction is a simple and effective process that can separate PHCs from various matrix, has been proven successful for oily wastes treatment (Zubaidy and Abouelnasr 2010;Taiwo and Otolorin 2009). In this process, oily wastes and solvent are mixed in an appropriate proportion to ensure adequate miscibility of oil in solvent, while most water and solids are rejected as unwanted impurities which can be removed by gravitational settling or centrifugation.…”

Section: Statement Of the Problem And Research Objectivesmentioning

confidence: 99%

“…The effective management of oily sludge has become a worldwide problem due to its hazardous nature and increasing production quantity around the world. During the past years, a variety of oily sludge treatment methods have been developed, such as landfarming, incineration, solidification/stabilization, solvent extraction, ultrasonic treatment, pyrolysis, photocatalysis, chemical treatment, and biodegradation Mrayyan and Battikhi, 2005;Mater et al , 2006;da Rocha et al , 2010;Roldan-Carrillo et al , 2010;Zubaidy and Abouelnasr, 2010;Yan et al, 2012) . By employing these technologies, the contents of hazardous constituents can be reduced or eliminated, and its deleterious environmental and health impacts can thus be mitigated.…”

Section: Introductionmentioning

confidence: 99%

Development of novel oil recovery methods for petroleum refinery oily sludge treatment

Hu¹

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Oily sludge is one of the most significant wastes generated in the petroleum industry.It is a complex emulsion of various petroleum hydrocarbons (PHCs), water, metals, and fine solids. Due to its hazardous nature and increased generation quantities around the world, the effective treatment of oily sludge has attracted widespread attention. The complexity of its composition and diversity of its origin sources make oily sludge management a difficult and costly undertaking. Many methods have been developed for the treatment of oily sludge through oil recovery or sludge disposal approaches, but no single specific process can be considered as a panacea since each method is associated with different advantages and limitations. Efforts should focus on the improvement of current technologies and the combination of oil recovery with sludge disposal in order to comply with both resource reuse recommendations and environmental regulations. The object of this study was to develop novel combined methods for oil recovery treatment on different refinery oily sludges. The investigation focused on the oil recovery performance of combined methods based on four individual treatment processes including ultrasonic irradiation, solvent extraction, freeze/thaw, and pyrolysis in oily sludge treatment.Firstly, the oil recovery and salt removal effects of ultrasonic irradiation on oil refinery tank bottom sludge were investigated, together with those of direct heating.Ultrasonic power, treatment duration, sludge-to-water ratio, and initial sludge-water slurry temperature were examined for their impacts on sludge treatment. It was found that the increased initial slurry temperature could enhance the ultrasonic irradiation performance, especially at lower ultrasonic power level (i.e., 21 W), but the application of higher-power ultrasonic irradiation could rapidly increase the bulk temperature of slurry. Ultrasonic 2 irradiation had a better oil recovery and salt removal performance than direct heating treatment. More than 60% of PH Cs in the sludge was recovered at an ultrasonic power of 75 W, a treatment duration of 6 min, an initial slurry temperature of 25 °C, and a sludgeto-water ratio of 1 :4, while salt content in the recovered oil was reduced to <5 mg/L, thereby satisfying the salt requirement in refinery feedstock oil. In general, ultrasonic irradiation could be an effective method in terms of oil recovery and salt removal from refinery oily sludge, but the separated wastewater still contains relatively high concentrations of PH Cs and salt which requires proper treatment.Two types of ultrasonic assisted extraction (UAE) treatment including UAE probe (UAEP) system and UAE bath (UAEB) system were investigated for oil recovery from refinery oily sludge. Their oil recovery efficiencies were compared to that of mechanical shaking extraction (MSE). Three solvents including cyclohexane (CHX), ethyl acetate (EA), and methyl ethyl ketone (MEK) were examined as the extraction solvents. The influence of experimental factors on oil an...

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Current research status and development trends in rolling oil sludge treatment

Ge,

Mai,

et al. 2024

Asia-Pacific J Chem Eng

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Rolling oil sludge (ROS) is a type of solid waste produced during steel rolling; this waste contains not only a high iron content but also many harmful organic components and is a very attractive secondary resource. This paper introduces the sources and hazards of ROS, summarizes the recycling methods integrated with steel production, classifies traditional treatment technologies, and analyzes their advantages and disadvantages. Combined treatment is the main direction of ROS treatment methods in the future. The ROS recycling techniques applied in different industries are summarized. Finally, existing problems and future work are described to promote the remediation and resource utilization of ROS.

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Fuel recovery from waste oily sludge using solvent extraction

Cited by 207 publications

References 13 publications

Solvent Blend Performance in Hydrocarbon Recovery from Nigerian Tank Bottom Sludge

Solvent Blend Performance in Hydrocarbon Recovery from Nigerian Tank Bottom Sludge

Development of novel oil recovery methods for petroleum refinery oily sludge treatment

Current research status and development trends in rolling oil sludge treatment

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