Degradation of crude oil in the Presence of Lead (Pb) and cadmium (Cd) by a metal-adapted consortium culture

Kok Kee Wong, Brid Quilty, Salmijah Surif

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    A consortium culture (CC) which was adapted to heavy metals was able to degrade 1% (v/v) of crude oil and after 8 weeks of incubation, no detectable peaks were found when analysed using GC-FID. There were significant decrease (p<0.05) in the surface tension (dynes/cm) of the culture filtrate measured starting from week-2 to week-8 compared to starting week-0, suggesting that biosurfactant was rapidly produced by CC within the first two weeks as a strategy to increase solubility of hydrophobic components of crude oil. In the presence of 0.1 and 1.0 mg/L of lead (Pb), degradation of crude oil was observed at 96% and 94%, respectively. In the case of cadmium (Cd), concentration at 0.01 mg/L resulted in 96% of crude oil degradation. However, at higher concentration of 0.1 mg/L Cd, only 73% of degradation was achieved. The CC was also shown able to remove Pb and Cd up to 90% from the culture media. The bacterial CC can adsorp metals onto the cell surfaces as shown using transmission electron microscopy (TEM). These results showed that the CC could be effective for bioremediation of crude oil waste contaminated with heavy metals.

    Original languageEnglish
    Pages (from-to)577-585
    Number of pages9
    JournalAdvances in Environmental Biology
    Volume7
    Issue number4
    Publication statusPublished - Apr 2013

    Fingerprint

    Petroleum
    Cadmium
    crude oil
    cadmium
    Metals
    metals
    oils
    degradation
    metal
    Heavy Metals
    heavy metals
    heavy metal
    biosurfactants
    Environmental Biodegradation
    Surface Tension
    surface tension
    bioremediation
    culture filtrates
    Transmission Electron Microscopy
    Solubility

    Keywords

    • Biodegradation
    • Biosurfactant
    • Consortium culture
    • Crude oil
    • Heavy metals

    ASJC Scopus subject areas

    • Agricultural and Biological Sciences(all)
    • Environmental Science(all)

    Cite this

    Degradation of crude oil in the Presence of Lead (Pb) and cadmium (Cd) by a metal-adapted consortium culture. / Wong, Kok Kee; Quilty, Brid; Surif, Salmijah.

    In: Advances in Environmental Biology, Vol. 7, No. 4, 04.2013, p. 577-585.

    Research output: Contribution to journalArticle

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