Oil spill dispersant formulation from methyl ester sulfonate and soybean lecithin surfactants
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Author |
Zuhrina Masyithah, Mutiara Kartini Sujono and Aravi Zalsa Ramadhan
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e-ISSN |
1819-6608 |
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On Pages
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210-220
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Volume No. |
21
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Issue No. |
3
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Issue Date |
April 10, 2026
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DOI |
https://doi.org/10.59018/022631
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Keywords |
oil spill dispersant, lecithin, methyl ester sulfonate, diethylene glycol ethyl ether.
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Abstract
Oil Spill Dispersant (OSD) is a product that can remove oil layers on the water surface due to the presence of a mixture of surfactants (surface active agents) and solvents that can break down oil molecules into small droplets that can lower the surface tension between oil and water, allowing them to disperse naturally in the water. This study aims to formulate an oil spill dispersant from a combination of methyl ester sulfonate (MES) and the natural surfactant soybean lecithin (SL). OSD was formulated with 13 variations: the SL/MES substrate ratio (1/3; 1/1; 3/1), the lecithin concentration in diethylene glycol ethyl ether (dEGEE) (2%, 4%, 6%), and the MES concentration in distilled water (4%, 8%, 12%). Characterization of the resulting soybean lecithin surfactant was carried out by functional group analysis using a Fourier Transform Infrared (FTIR) spectrophotometer and hydrophilic-lipophilic balance (HLB) value analysis. The best OSD was obtained at a variation of the substrate ratio (SL/MES) = 3/1 with lecithin and MES concentrations to the solvent of 6% and 4%, with a density value of 1.0022 g/mL, viscosity of 2.438 cP, pH 5.9, and surface tension of 29.465 dyne/cm.
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