Preparation of ionic liquids microemulsion and its application for the treatment of oily sludge

Chang, Xiujie; Wang, Zhaodong; Li, Xueshu; Ge, Shujin; Li, Aixiang; Ma, Yanfei; Li, Qiuhong

doi:10.1080/01932691.2022.2136194

Cited by 11 publications

(6 citation statements)

References 39 publications

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“…Before microemulsion treatment, oily sludge was pretreated using 4 g per L Na 2 CO 3 solution at 60 °C and the removal oil rate reached up to 78.64% as described in previous work. 28 Then, the influence of treatment conditions (stirring time, stirring speed, temperature and centrifugal speed) on the residual oil rate using the IL microemulsion method was explored in detail and the results are presented in Fig. 2.…”

Section: Resultsmentioning

confidence: 99%

“…According to the method reported previously, the mass of residual oil ( m 1 ) was calculated. 28 Finally, the extracted sludge was dried at 105 °C and the mass was recorded as m 2 . The residual oil rate was calculated according to eqn (1).…”

Section: Methodsmentioning

confidence: 99%

“…Before the treatment using the microemulsion method, the oily sludge was pretreated according to the method reported by our group. 28 The pretreated oily sludge (2 g) was mixed with 15 mL microemulsions at a certain temperature and stirring speed. Then, the sludge was centrifuged at different speeds for 5 min.…”

Section: Treatment Of Oily Sludgementioning

confidence: 99%

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Insight into the oil removal mechanism of quaternary ammonium ionic liquid microemulsions for oily sludge treatment

Chang

et al. 2023

Sustainable Energy Fuels

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Insight into the oil removal mechanism of quaternary ammonium ionic liquid microemulsions for oily sludge treatment

Chang

et al. 2023

Sustainable Energy Fuels

Self Cite

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“…The disadvantage of ultrasonic treatment technology is that the requirements for ultrasonic sound intensity processing time and other parameters are relatively strict. Otherwise, it is easy to cause re-emulsification [3] .…”

Section: Introductionmentioning

confidence: 99%

Research on the law of hydrogen production by supercritical water gasification of oily sludge

Duan,

Wang,

et al. 2024

E3S Web Conf.

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As China's oil consumption continues to increase, the amount of oily sludge generated increases yearly. Aiming at the limitations of the traditional oil-containing sludge treatment technology, supercritical water is used to dissolve and convert organic components into hydrogen for hydrogen energy recovery to realize the reduction, harmlessness, and resourcefulness of the oily sludge treatment. The influences of reaction temperature, pressure, time, material ratio, and other parameters on hydrogen production from supercritical water gasification of oily sludge were experimentally examined. Results indicated that hydrogen yield increases with increased response temperature, pressure, and time, and hydrogen yield decreases with increased response mass ratio.

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“…Traditional treatment methods for oily sludge, such as incineration, 8 oxidation, 9 and biological treatment, 10 are focused on minimization, non‐hazardous, and resource utilization. Incineration treatment is highly adaptable to the raw material and has a small volume after treatment, 11 but the flue gas produced can cause secondary pollution due to dioxins and heavy metals in the incineration residue, a hazardous waste 12 .…”

Section: Introductionmentioning

confidence: 99%

Subcritical hydrothermal purification from oily sludge recovered from petroleum oily sludge by adding sodium hydroxide, sodium bicarbonate, and formic acid

Duan

Wang

He³

et al. 2023

Env Prog and Sustain Energy

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Subcritical water upgrading has received a great deal of attention because of its high efficiency and environmental protection technology features, but its high temperature and high‐pressure reaction conditions have limited its further development. This article investigates the hydrothermal upgrading recovered oil from oily sludge at 350°C and for a residence time of 60 min recovered oil. The effects of the type and concentration of various additives sodium hydroxide (NaOH), sodium bicarbonate (NaHCO3) and formic acid (CH3COOH) on the yield and quality of recovered oil were analyzed and discussed. The addition of 2 wt % NaOH increases the recovered oil yield to 78.6%, due to the demulsification effect of alkaline additives. Meanwhile, the CH3COOH effectively increased the H/C ratio of the recovered oil to 1.69, which can be attributed to the hydrogenation of large molecules in the sludge with hydrogen generated from the added CH3COOH. The effect characteristics and mechanisms of adding additives on the increase in the recovered oil yield and quality of oil‐bearing sludge in a sub‐critical hydrothermal environment were revealed. Subcritical water upgrading technology provides a new technological route for resource recovery of oily sludge with mild reaction conditions and high efficiency and simplicity.

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Preparation of ionic liquids microemulsion and its application for the treatment of oily sludge

Cited by 11 publications

References 39 publications

Insight into the oil removal mechanism of quaternary ammonium ionic liquid microemulsions for oily sludge treatment

Insight into the oil removal mechanism of quaternary ammonium ionic liquid microemulsions for oily sludge treatment

Research on the law of hydrogen production by supercritical water gasification of oily sludge

Subcritical hydrothermal purification from oily sludge recovered from petroleum oily sludge by adding sodium hydroxide, sodium bicarbonate, and formic acid

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