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April 5, 2026Green Chemistry Letters and ReviewsOpen Access

Surfactant-mediated demulsification: from waste oil processing to potential biomedical emulsion applications

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Authors

ASAde SyafrinaldyTRTyas Puspita RiniNRNurdiah Rahmawati

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Overview

Investigates surfactant efficiency for water separation in waste oils, suggesting implications for biomedical emulsion use.

Key Points

  • The study aims to evaluate the performance of various surfactants in demulsifying waste lubricant oil emulsions.
  • Examined three surfactants: Tergitol NP-9, SDS, and Tween-80.
  • Tested on two waste lubricant samples with different viscosities.
  • Assessed water separation efficiency (WD%) at varying surfactant concentrations.
  • Conducted thermal treatment to analyze its impact on demulsification.
  • NP-9 achieved the highest WD% (91.1%) in lower-viscosity samples at 275 ppm.
  • In higher-viscosity samples, NP-9 and SDS efficiencies decreased significantly.
  • Thermal treatment improved Tween-80's efficiency up to 100%, while NP-9 and SDS remained stable.
  • Post-treatment was necessary as separated water did not meet discharge standards.

Cite This Study

Syafrinaldy et al. (2026) studied this question.

synapsesocial.com/papers/69d1fb20a79560c99a0a17f2https://doi.org/10.1080/17518253.2026.2649509
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