Bioremediation of Polyaromatic Hydrocarbon-Contaminated Sediments in Aerated Bioslurry Reactors

Launen, Loren A.; Buggs, Vincent H.; Eastep, Michael E.; Enriquez, Rica C.; Leonard, J.W.; Blaylock, Michael J.; Huang, Jianwei; Häggblom, Max M.

doi:10.1080/10588330208951209

Cited by 33 publications

(18 citation statements)

References 27 publications

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“…Variation in salinity is a predominant factor in mangroves and depends on the behaviour of the tides (Ward and Brock 1978;Dott et al 1989, Shiaris 1989Leahy and Colwell 1990;Trevors et al 1994;Kastner et al 1998;Launen et al 2002;Saponaro et al 2002;Tam et al 2002;Olguín et al 2007;Chen et al 2008;Wu et al, 2008;Mnif et al 2009) In some mangroves the most significant factors observed to affect the biodegradation of oil compounds is salinity…”

Section: Salinitymentioning

confidence: 97%

Bioremediation of Mangroves Impacted by Petroleum

Santos

Carmo

Paes

et al. 2010

Water Air Soil Pollut

137

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Section: Salinitymentioning

confidence: 97%

Bioremediation of Mangroves Impacted by Petroleum

Santos

Carmo

Paes

et al. 2010

Water Air Soil Pollut

137

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“…Only a very few studies have compared microbial petroleum hydrocarbon degradation in vegetated versus non-vegetated marine and salt marsh sediments in the lab (Wright et al 1997(Wright et al , 2004Launen et al 2002) or the field (Garcia-Blanco et al 2007) and with the exception of the studies conducted by Daane et al (2001Daane et al ( , 2002 none have characterized the specific PAH-degrading microbial communities present in Spartina-dominated petroleum impacted salt marshes.…”

Section: Introductionmentioning

confidence: 97%

Characterization of the indigenous PAH-degrading bacteria of Spartina dominated salt marshes in the New York/New Jersey Harbor

et al. 2007

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The aerobic polyaromatic hydrocarbon (PAH) degrading microbial communities of two petroleum-impacted Spartina-dominated salt marshes in the New York/New Jersey Harbor were examined using a combination of microbiological, molecular and chemical techniques. Microbial isolation studies resulted in the identification of 48 aromatic hydrocarbon-degrading bacterial strains from both vegetated and non-vegetated marsh sediments. The majority of the isolates were from the genera Paenibacillus and Pseudomonas. Radiotracer studies using (14)C-phenanthrene and (14)C-pyrene were used to measure the PAH-mineralization activity in salt marsh sediments. The results suggested a trend towards increased PAH mineralization in vegetated sediments relative to non-vegetated sediments. This trend was supported by the enumeration of PAH-degrading bacteria in non-vegetated and vegetated sediment using a Most Probable Numbers (MPN) technique, which demonstrated that PAH-degrading bacteria existed in non-vegetated and vegetated sediments at levels ranging from 10(2 )to 10(5 )cells/g sediment respectively. No difference between microbial communities present in vegetated versus non-vegetated sediments was found using terminal restriction fragment length polymorphism (of the 16S rRNA gene) or phospholipid fatty acid analysis. These studies provide information on the specific members and activity of the PAH-degrading aerobic bacterial communities present in Spartina-dominated salt marshes in the New York/New Jersey Harbor estuary.

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“…Experiments of extensive biological degradation were performed in well-defined conditions by treating PAH-polluted soils in bench-scale stirred reactors (bioslurry reactors) [4,12]. In some case, the addition of "outer" micro-organisms has been considered a valuable tool for increasing the rate and extent of biodegradation of PAHs [3].…”

Section: Introductionmentioning

confidence: 99%

Polycyclic aromatic hydrocarbons degradation by composting in a soot-contaminated alkaline soil

Moretto¹,

Silvestri²,

Ugo³

et al. 2005

Journal of Hazardous Materials

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This study deals with the biodegradation of the polycyclic aromatic hydrocarbons (PAH)s present in a soil contaminated by soot waste, characterised by a total PAHs content in the 200 mg kg −1 range. A challenging characteristic of the waste soil treated was its high alkalinity, with a pH of about 12.8. The waste came from a soot-contaminated area located in the industrial zone of Porto Marghera, Venice (Italy). The biodegradation process employed was the composting of the waste with sewage sludge and yard waste. The process was carried out on a pilot scale using a closed tank with forced aeration for a period of 60 days, followed by 70 days with natural aeration. The time evolution of the process was monitored by following the time change in the concentration of the 16 US-EPA PAHs, as well as temperature, pH, electrical conductivity, C and N contents. Also phytotoxicity parameters, such as the growth and respiration indexes, were monitored. An induction time of about 30 days was observed, which corresponded to the time required before observing a significant self-drop in the waste pH and an increase in mass temperature. Afterward, a progressive drop in the PAHs concentration was observed, up to reaching after 130 days an overall degradation percentage in the order of 68%. The degradation was more effective on rather low molecular weight PAHs (2-4 rings).

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Bioremediation of Polyaromatic Hydrocarbon-Contaminated Sediments in Aerated Bioslurry Reactors

Cited by 33 publications

References 27 publications

Bioremediation of Mangroves Impacted by Petroleum

Bioremediation of Mangroves Impacted by Petroleum

Characterization of the indigenous PAH-degrading bacteria of Spartina dominated salt marshes in the New York/New Jersey Harbor

Polycyclic aromatic hydrocarbons degradation by composting in a soot-contaminated alkaline soil

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