Recovery of fuel from real waste oily sludge via a new eco-friendly surfactant material used in a digital baffle batch extraction unit

Recovery of fuel from real waste oily sludge via a new eco-friendly surfactant material used in a digital baffle batch extraction unit

This study focused on developing a new cocktail extraction agent (CEA) composed of solvent and a new surfactant material (SM) for enhancing the efficiency of fuel recovery from real waste oil sludge (WSO). The effects of different solvents (e.g. methyl ethyl ketone (MEK), naphtha, petrol and kerosen...

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Bibliographic Details
Published in:Scientific reports Vol. 13; no. 1; p. 9931
Main Authors: Humadi, Jasim I., Jafar, Saad A., Ali, Nisreen S., Ahmed, Mustafa A., Mzeed, Mohammed J., Al-Salhi, Raheem J., Saady, Noori M. Cata, Majdi, Hasan Sh, Zendehboudi, Sohrab, Albayati, Talib M.
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 19-06-2023
Nature Publishing Group
Nature Portfolio
Subjects:
639/166
704/172/169
Distillation
Humanities and Social Sciences
Mass transfer
multidisciplinary
Oil
Oil recovery
Science
Science (multidisciplinary)
Sludge
Sodium thiosulfate
Solvents
Surfactants
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Summary:This study focused on developing a new cocktail extraction agent (CEA) composed of solvent and a new surfactant material (SM) for enhancing the efficiency of fuel recovery from real waste oil sludge (WSO). The effects of different solvents (e.g. methyl ethyl ketone (MEK), naphtha, petrol and kerosene), SMs (Dowfax and sodium thiosulfate), extraction time (10–20 min), extraction temperatures (20–60 °C) and CEA/sludge ratios (1–4) on the extraction performance were investigated. SMs and DBBE design enhanced the extraction efficiency by increasing the dispersion of solvent in WSO and enhancing the mixing and mass transfer rates. Results proved that Dowfax was the best SM for oil recovery under various conditions. The best CEA (e.g. MEK and Dowfax) provides the maximum fuel recovery rate of 97% at a period of 20 min, temperature of 60 °C and 4:1 CEA/sludge ratio. The produced fuel was analysed and fed to the distillation process to produce diesel oil. The characteristics of diesel oil were measured, and findings showed that it needs treatment processes prior its use as a finished fuel.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-37188-9