Liquid amphiphilic polymer for effective airborne dust suppression

Taehee Lee, Junhyeok Park, David S. Knoff, Kwangmin Kim, Minkyu Kim

Research output: Contribution to journalArticle

Abstract

Airborne dust is a byproduct of natural and artificial occurrences, including high winds in arid regions and human activities, and it affects most of the world's population. Watering is the most general practice for reducing airborne dust by wetting the surface of the dust source to agglomerate dust particles via the capillary effect, increasing the aerodynamic diameter of (ultra)fine particles and reducing dust emission. However, the short-term effectiveness due to fast water evaporation, requiring frequent watering, is a major disadvantage. Herein, we utilized biocompatible liquid polymers as additives in water to prolong moist conditions of dust sources due to their liquid state. After the water evaporated, the liquid polymers maintained moisture on the dust sources, resulting in significantly reduced (ultra)fine particle emissions and extended effectiveness compared to conventional water treatment. Interestingly, we observed greater dust suppressive effectiveness with liquid amphiphilic polymer than liquid hydrophilic polymer because of the synergistic effect of the liquid state and amphiphilic property of the polymer. Translating lab-scale experiments to pilot-scale field-testing confirmed the potential for utilizing biocompatible liquid amphiphilic polymers to advance airborne dust suppression technology.

Original languageEnglish (US)
Pages (from-to)40146-40151
Number of pages6
JournalRSC Advances
Volume9
Issue number68
DOIs
StatePublished - 2019

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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