Treatment of Daqing oily sludge by thermochemical cleaning method

Duan, Ming; Wang, Xiaodong; Fang, Shenwen; Zhao, Bo; Li, Chengcheng; Xiong, Yan

doi:10.1016/j.colsurfa.2018.06.046

Cited by 68 publications

(24 citation statements)

References 29 publications

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“…The physical properties of oily sludge comprised specific gravity, American Petroleum Instate API, color, asphaltene content, mass%, and water content mass% were determined, as shown in Table 2. Table 2 shows a varying degree of specific gravity between the samples 1 is 0.9150 maximum result, and sample 4 is 0.9000 minimum result, which indicates that the oily sludge is stacked from different sources and long times [23].…”

Section: Physical Properties Of Oily Sludgementioning

confidence: 96%

Characterization Study of Petroleum Oily Sludge Produced from North Refineries Company Baiji to Determine the Suitability for Conversion into Solid Fuel

et al. 2021

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Oily sludge (OS) contains toxic compounds such as aromatic hydrocarbons and polyaromatic hydrocarbons; oily sludge is hard to dehydrate due to its high viscosity. Generally, it contains about (40 to 50 wt.%) of water. However, this research's oily sludge sample contains about (50 wt.%) of water collected from North Refineries Company Baiji (NRC). NRC Baiji yields around 3000-3500 m 3 annually of oily sludge. This research aims to study oily sludge specifications, thereby prove suitability to undergo the thermochemical process. The physical properties of oily sludge samples have been conducted, it indicated the complex formula of oily sludge, and it has a serious effect on human health and environmental issues. In this study, the oily sludge has a low heating value (LHV) of 6.705 MJ.kg -1 (as received) and a high heating value (HHV) of 9.465 MJ.kg -1 for a dried sample at 105 °C for 24 h, which indicate that it is a rich in carbon content. FTIR has been carried out to obtain the function group characterizations. The TGA of the oily sludge sample as received showed the greatest loss in volume (39%), while the loss in volume for the dried sample was (15%). The thermochemical conversion process eco-friendly, rapid, short time, moderate temperature, and low-cost. It is used for the total reclamation of waste. It is a novel way of totally converting oily sludge for solid carbon fuel production.

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Section: Physical Properties Of Oily Sludgementioning

confidence: 96%

Characterization Study of Petroleum Oily Sludge Produced from North Refineries Company Baiji to Determine the Suitability for Conversion into Solid Fuel

et al. 2021

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“…The sample was then filtered by using vacuum filter. The treated sludge obtained from filtration was dried in oven at 105C for 5 minutes to remove moisture from the sludge [12].…”

Section: B Thermochemical Treatmentmentioning

confidence: 99%

The U se of P lant B ased S urfactant in R emoval of O il from O ily S ludge via T hermochemical C leaning M ethod

W.*,

N.,

et al. 2019

IJEAT

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The conventional physical treatment technologies is difficult to dewater most of water content in oily sludge during sludge dewatering process. Oily sludge removal by using surfactant via thermochemical cleaning method is recognized as one of potential method used to enhance the performance of sludge dewatering process. This study was designed to investigate the performance of anionic and cationic plant-based surfactant in removal of oil and enhance the dewatering of oily sludge. The characterization study of raw oily sludge, PBE and SLSA and those treated with PBE and SLSA surfactants were performed via TGA and FTIR. The effect of surfactant concentration was investigated based on percentage of oil removal. FTIR spectra confirms the loss of transmission peak at 1636.11 cm-1 for treated oily sludge due to the loss of oil via solubilization of oil from oily sludge into surfactant solution. Results shows that the best condition for the percentage of oil removal when using PBE and SLSA surfactants was 84.3% and 67.6%, respectively at PBE and SLSA concentration of 50 mg/L and 100 mg/L. It was observed that SLSA and PBE surfactants has potential to remove oil from oily sludge and subsequently contributed to enhance the oily sludge dewatering process.

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“…It has been established that the oil sludge treatment should follow the reduction, reuse, and recycle (3R) policies mentioned in the present waste management procedures (Sakai et al 2011 ; European Parliament 2008 ). Therefore, oil sludge washing (OSW) with surfactants has been used to recover the oil (Liang et al 2017 ; Duan et al 2018 ; Liu et al 2018a ; Chen et al 2019 ) and sometimes co-solvents are added to help with the oil extraction process (Zheng et al 2012 ). Hu et al ( 2020 ) mentioned that there has been recently increasing oil recovery-related research to extract valuable energy and to reduce potentially harmful petroleum hydrocarbons and volume of oil sludge to dispose of.…”

Section: Introductionmentioning

confidence: 99%

Oil sludge washing with surfactants and co-solvents: oil recovery from different types of oil sludges

Ramírez

Shaw

Collins

2020

Environ Sci Pollut Res

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Different physicochemical and biological treatments have been used to treat oil sludges, and oil recovery techniques are preferred such as oil sludge washing (OSW) with surfactants and co-solvents. Toluene is commonly used as co-solvent, but it is non-benign to the environment. This study tested alternative co-solvents (n-pentane, n-hexane, cyclohexane, and isooctane) at 1:1 and 2:1 C/OS (co-solvent to oil sludge ratio). Also, this study evaluated the effect on the oil recovery rate (ORR) of three main parameters in the washing: type, concentration, and application ratio (S/OS) of surfactants to oil sludges. To date, no study has assessed these parameters in the washing of oil sludges from different sources. Four types of oil sludges and five surfactants (Triton X-100 and X-114, Tween 80, sodium dodecyl sulphate (SDS), and rhamnolipid) were used. The results showed that cyclohexane had high ORR and could be used instead of toluene because it is more benign to the environment. The S/OS ratio had a high effect on the ORR and depended on the type of oil sludge. Rhamnolipid, Triton X-100, and Triton X-114 had the highest oil recovery rates (40 – 70%). In addition, it was found that the surfactant concentration had no effect on the ORR. Consequently, the addition of surfactant was not significantly different compared to the washing with no surfactants, except for one sludge. The use of the surfactant in the washing solution can help in the selective extraction of specific oil hydrocarbon fractions in the recovered oil to assess its potential reuse as fuel. Further recommendations were given to improve the OSW process.

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Treatment of Daqing oily sludge by thermochemical cleaning method

Cited by 68 publications

References 29 publications

Characterization Study of Petroleum Oily Sludge Produced from North Refineries Company Baiji to Determine the Suitability for Conversion into Solid Fuel

Characterization Study of Petroleum Oily Sludge Produced from North Refineries Company Baiji to Determine the Suitability for Conversion into Solid Fuel

The U se of P lant B ased S urfactant in R emoval of O il from O ily S ludge via T hermochemical C leaning M ethod

Oil sludge washing with surfactants and co-solvents: oil recovery from different types of oil sludges

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