Biosurfactant-facilitated remediation of metal-contaminated soils

Research output: Contribution to journalArticle

112 Citations (Scopus)

Abstract

Bioremediation of metal-contaminated wastestreams has been successfully demonstrated. Normally, whole cells or microbial exopolymers are used to concentrate and/or precipitate metals in the wastestream to aid in metal removal. Analogous remediation of metal-contaminated soils is more complex because microbial cells or large exopolymers do not move freely through the soil. The use of microbially produced surfactants (biosurfactants) is an alternative with potential for remediation of metal-contaminated soils. The distinct advantage of biosurfactants over whole cells or exopolymers is their small size, generally biosurfactant molecular weights are less than 1500. A second advantage is that biosurfactants have a wide variety of chemical structures that may show different metal selectivities and thus, metal removal efficiencies. A review of the literature shows that complexation capacities of several bacterial exopolymers was similar to the complexation capacity of a rhamnolipid biosurfactant produced by Pseudomonas aeruginosa ATCC 9027.

Original languageEnglish (US)
Pages (from-to)59-62
Number of pages4
JournalEnvironmental Health Perspectives
Volume103
Issue numberSUPPL. 1
StatePublished - 1995

Fingerprint

Remediation
remediation
exopolymer
Soil
Metals
Soils
metal
Complexation
complexation
Environmental Biodegradation
Bioremediation
contaminated soil
Surface-Active Agents
bioremediation
Pseudomonas aeruginosa
surfactant
aid
Precipitates
Molecular Weight
Molecular weight

Keywords

  • Bioremediation
  • Biosurfactant
  • Metals
  • Remediation
  • Soil
  • Surfactant

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Public Health, Environmental and Occupational Health

Cite this

Biosurfactant-facilitated remediation of metal-contaminated soils. / Maier, Raina Margaret.

In: Environmental Health Perspectives, Vol. 103, No. SUPPL. 1, 1995, p. 59-62.

Research output: Contribution to journalArticle

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