Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
, 23 (23), 23876-23883

Remediation of Oil-Contaminated Sand With Self-Collapsing Air Microbubbles

Affiliations

Remediation of Oil-Contaminated Sand With Self-Collapsing Air Microbubbles

Ashutosh Agarwal et al. Environ Sci Pollut Res Int.

Abstract

In this study, a novel chemical-free approach for cleaning oil-contaminated sand with self-collapsing air microbubbles (MBs) with diameter less than 50 μm was developed without the use of chemicals, such as surfactants and alkalis. Diesel and rotary-vane pump oil-contaminated fine and medium sands were treated with MBs to study the effect of oil viscosity and sand grain size on oil removal with MBs. About 95 % of diesel removal was achieved for 24 h old 10 % (w/w) diesel-contaminated medium sand in contrast to only 70 % removal from fine sand after 40-min treatment with MBs. While rotary-vane pump oil removal exceeds that of diesel after 40-min treatment with MBs, combination of mechanical stirring with MBs significantly enhanced the oil removal rate, whereby 95 % diesel removal was achieved from fine sand in 30 min in contrast to only 52 % diesel removal with MBs alone. A possible MBs cleaning mechanism for oil-contaminated sand was also proposed. This study provides experimental evidence for the applicability of self-collapsing MBs as a novel chemical-free approach for cleaning oil-contaminated sand.

Keywords: Diesel; Microbubbles; Remediation; Rotary-vane pump oil; Sand.

Similar articles

See all similar articles

Cited by 1 PubMed Central articles

References

    1. Ultrason Sonochem. 2009 Mar;16(3):408-16 - PubMed
    1. J Colloid Interface Sci. 2004 Aug 15;276(2):456-64 - PubMed
    1. J Phys Chem B. 2007 Feb 15;111(6):1343-7 - PubMed
    1. Adv Drug Deliv Rev. 2004 May 7;56(9):1291-314 - PubMed
    1. Biofouling. 2013;29(1):69-76 - PubMed

MeSH terms

LinkOut - more resources

Feedback