Accession Number:

ADA583032

Title:

Minimizing Surfactant Losses Using Twin-Head Anionic Surfactants in Subsurface Remediation (Preprint)

Descriptive Note:

Journal article preprint

Corporate Author:

OKLAHOMA UNIV NORMAN

Report Date:

1993-05-22

Pagination or Media Count:

30.0

Abstract:

The economics of surfactant enhanced subsurface remediation are affected by losses of surfactants due to such phenomena as precipitation, sorption, etc. It is hypothesized that surfactants with twin head groups will exhibit lower losses in the subsurface as compared to single head group surfactants while maintaining high solubilization. The contaminant addressed in this research was naphthalene and the surfactants evaluated were mono- and di-sulfonated anionics sodium dodecylbenzenesulfonate and alkyl diphenyloxide disulfonates. The results of this research demonstrated that disulfonates were significantly less susceptible to precipitation than monosulfonates and that disulfonates were less susceptible to sorption than monosulfonates, and also less prone to sorption than nonionic surfactants evaluated in other research. Disfulfonates also exhibited greater solubilization of naphthalene than monosulfonates and slightly lower solubilization than nonionics. Solubility ratios were evaluated on both a molar MSR and weight WSR basis and corresponding micelle-phaseaqueous-phase partition coefficients Km and Kw were reported. This research demonstrated that disulfonate surfactants are less susceptible to losses than other surfactants evaluated, and thus are strong candidates for use in surfactant enhanced subsurface remediation.

Subject Categories:

  • Organic Chemistry
  • Soil Mechanics
  • Miscellaneous Materials
  • Environmental Health and Safety

Distribution Statement:

APPROVED FOR PUBLIC RELEASE