Biodegradation of oil in oily sludges from steel mills

Biswal, Basanta Kumar; Tiwari, Satyendra Nath; Mukherji, Suparna

doi:10.1016/j.biortech.2008.09.037

Cited by 46 publications

(24 citation statements)

References 16 publications

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“…Oil contained in oily sludge (15 g) was extracted by soxhlet extraction using DCM (150 ml) as solvent over 6 h (Biswal et al, 2009). The oil extracted from oily sludge was separated into asphaltene and maltene fractions as per ASTM D2007-08 with minor modifications, i.e., using n-heptane as the standard precipitant instead of n-pentane.…”

Section: Quantification Of Oil In Oily Sludgementioning

confidence: 99%

“…The pH of the oily sludge samples were measured after mixing the samples with water (1:5 w/v). Moisture content, organic matter content and volatile suspended solids were determined using standard procedures (Biswal et al, 2009;Clesceri et al, 1998). Particle size of solids in dried oily sludge after oil extraction was determined using the dry sieving technique and the Laser diffraction particle size analyzer (LSI3 320, Beckman Coulter Counter, Miami, FL).…”

Section: Characterization Of Oily Sludgementioning

confidence: 99%

“…The first hypothesis was tested by using the maltene fraction of oil extracted from sludge, since asphaltenes are highly recalcitrant. Oil and hydrocarbon degradation potential of several of the pure bacterial strains used in this study have been reported in previous studies (Biswal et al, 2009;Jeswani and Mukherji, 2013;Mohanty and Mukherji, 2008). The novelty of this work lies in testing the impact of various bioaugmentation scenarios using well characterized hydrocarbon degrading strains.…”

Section: Introductionmentioning

confidence: 98%

“…Bioremediation of oily sludge can be influenced by a number of factors, such as, composition and concentration of TPH in the oily sludge, treatment duration and availability of suitable microorganisms. Various studies have reported the ability of microorganisms to use petroleum hydrocarbons as the sole source of carbon and energy (Biswal et al, 2009;Mohanty and Mukherji, 2008;Mukherji et al, 2004). Bioaugmentation with microbial consortia is practiced more commonly, since pure microbial strains can metabolize only limited substrate types.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Characterization of oily sludge from a refinery and biodegradability assessment using various hydrocarbon degrading strains and reconstituted consortia

Jasmine

Mukherji

2015

Journal of Environmental Management

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Section: Quantification Of Oil In Oily Sludgementioning

confidence: 99%

Section: Characterization Of Oily Sludgementioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of oily sludge from a refinery and biodegradability assessment using various hydrocarbon degrading strains and reconstituted consortia

Jasmine

Mukherji

2015

Journal of Environmental Management

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“…by mass, but more frequently in the range of 15-50% (Tahhan et al, 2011;Biswal et al, 2009;Mohan and Chandrasekhar, 2011;Liu et al, 2010;Liu et al, 2012), whereas the contents of water and solids are in the range of 30-85% and 5-46%, respectively (Ramaswamy et al, 2007). The PHCs and other organic compounds in oily sludge can be generally classified into four fractions, including aliphatics, aromatics, nitrogen sulphur oxygen (NSO) containing compounds, and asphaltenes (Mrayyan and Battikhi, 2005;Reddy et al, 2011).…”

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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Co‐Combustion of Oil Sludge Char and Brown Coal in a Continuous Fluidized‐Bed Combustor

Shi

Qiao

Zhang

et al. 2022

Chemie Ingenieur Technik

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Ing. Joachim Werther on the occasion of his 80th birthdayFor developing technologies for innocent disposal of/energy recovery from high-ash oil sludge char (OSC), it was continuously combusted in a 10 kg h -1 fluidized-bed combustor. Addition of brown coal (BC) improved its combustion, but excessive BC was prone to cause slagging. Fine coke particles in OSC and volatiles in BC led to staged temperatures along the fluidized bed through air-staging co-combustion, enabling excellent combustion performance as well as efficient NO x reduction, especially when coupled with selective non-catalytic reduction. Thus, there is a potential to cleanly recover energy from OSC by its co-combustion with BC.

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Biodegradation of oil in oily sludges from steel mills

Cited by 46 publications

References 16 publications

Characterization of oily sludge from a refinery and biodegradability assessment using various hydrocarbon degrading strains and reconstituted consortia

Characterization of oily sludge from a refinery and biodegradability assessment using various hydrocarbon degrading strains and reconstituted consortia

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

Co‐Combustion of Oil Sludge Char and Brown Coal in a Continuous Fluidized‐Bed Combustor

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