Dispersion of oil-tank sludge using compositions of cationic, anionic, and nonionic surfactants followed by isolation of synthetic oil is a processing method with several disadvantages such as residual S-containing compounds and toxic spent solutions. The present work proposes the use of polycomplexants (sodium salts of iminodiacetate derivatives of fatty-acid triglycerides and mucosaccharides) as promising and affordable replacements for traditional surfactants. A methodology for processing oil-tank sludge using these compounds and results of laboratory tests showing decreased S contents and significantly lower densities and viscosities of the oil-tank sludge are given.
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The work was financially supported by the RFBR in the framework of Science Project No. 18-29-24137.
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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 2, pp. 48 — 51, March —April, 2020.
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Tsivadze, A.Y., Maksimov, A.L., Fridman, A.Y. et al. Processing of Oil-Tank Sludge by Hydrothermal Dispersion using polycomplexants and Amino-Acid-Salts. Chem Technol Fuels Oils 56, 199–204 (2020). https://doi.org/10.1007/s10553-020-01129-3
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DOI: https://doi.org/10.1007/s10553-020-01129-3