Bioremediation of a creosote contaminated site

Ellis, B.S.; Harold, P.; Kronberg, H.

doi:10.1080/09593339109385029

Cited by 52 publications

(17 citation statements)

References 4 publications

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“…The principal sources of PAHs in soils along highways and roads are vehicular exhausts and emissions from wearing of tires and asphalt. PAHs may also be released to soils at concentrations above background and landfill sites (Black et al 1989) and industrial sites, including creosote production (Ellis et al 1991), wood-preserving (Mueller et al 1991;Weissenfels et al 1990), and coking plants (Weissenfels et al 1990;Werner et al 1988). Soils at the sites of former manufactured gas plants are also heavily contaminated with PAHs (Bewley et al 1989;Tumey and Goerlitz 1990).…”

Section: Soilmentioning

confidence: 99%

The Gulf Oil Spill

2011

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Section: Soilmentioning

confidence: 99%

The Gulf Oil Spill

2011

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“…PAHs are widely distributed in soils and sediments, groundwater and the atmosphere. They have been detected in marine sediments such as San Diego Bay, California8, 9 and the Central Pacific ocean,10 intertidal sediments,11 gas works site soils,12, 13 sewage sludge‐contaminated soils,14 aquifers and groundwater and in atmospheric deposits such as vehicle exhaust fumes 4…”

Section: Introductionmentioning

confidence: 99%

Bioremediation of polycyclic aromatic hydrocarbons: current knowledge and future directions

Bamforth

Singleton

2005

J of Chemical Tech & Biotech

705

361

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Polycyclic aromatic hydrocarbons (PAHs) are a class of organic compounds that have accumulated in the natural environment mainly as a result of anthropogenic activities such as the combustion of fossil fuels. Interest has surrounded the occurrence and distribution of PAHs for many decades due to their potentially harmful effects to human health. This concern has prompted researchers to address ways to detoxify/remove these organic compounds from the natural environment. Bioremediation is one approach that has been used to remediate contaminated land and waters, and promotes the natural attenuation of the contaminants using the in situ microbial community of the site. This review discusses the variety of fungi and bacteria that are capable of these transformations, describes the major aerobic and anaerobic breakdown pathways, and highlights some of the bioremediation technologies that are currently available.

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“…Alternatively, the treatment scheme of multiple additions of creosote simulated a situation in which PAHs are leached from a point source such as contaminated sediments, leading to a chronic exposure [31]. In both treatment regimes, PAH concentrations in the water were diminished shortly after treatment was complete, presumably by partitioning to the sediment, pool liners, and biotic components of the microcosm and by volatilization to the air phase for the lower-molecular-weight PAHs [40] and biodegradation by bacteria [28,41]. However, in the microcosms treated using multiple additions of creosote, aqueous PAHs remained at higher concentrations over time.…”

Section: Discussionmentioning

confidence: 99%

Creosote Toxicity to Photosynthesis and Plant Growth in Aquatic Microcosms

Marwood

Bestari

Gensemer³

et al. 2003

Environ Toxicol Chem

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To assess photosynthesis as a bioindicator of toxicity from polycyclic aromatic hydrocarbons (PAHs), the response of chlorophyll-a fluorescence to creosote exposure was compared with effects on population-level plant growth. Large, outdoor, freshwater microcosms containing Eurasian watermilfoil (Myriophyllum spicatum) received either a single application or multiple applications of liquid creosote at nominal concentrations from 0.109 to 32.7 mg L(-1). For several weeks following treatment, photosynthetic electron transport was measured using pulse amplitude-modulated chlorophyll-a fluorescence. The maximum efficiency of photosystem II electron transport (Fv/Fm) and the quantum yield of photochemistry (deltaF/F'm) were diminished in plants shortly after the addition of creosote. In microcosms that received a single treatment of creosote only, the 50% effective concentrations (EC50s), expressed as the aqueous concentration of 15 of the most abundant PAHs, were 0.28 mg L(-1) for Fv/Fm and 0.30 mg L(-1) for deltaF/F'm. Chlorophyll-a fluorescence was diminished to a greater extent in microcosms that received multiple treatments of creosote, with EC50s of 0.13 mg L(-1) for Fv/Fm and 0.10 mg L(-1) for deltaF/F'm. Plant biomass accumulation was inhibited in a concentration-dependent manner in all microcosms treated with creosote, but this inhibition occurred to a greater degree in microcosms treated with multiple creosote applications. The response of chlorophyll-a fluorescence, measured only 8 d after creosote treatment, was similar to plant growth over the entire growing season, indicating that this technique can be used to estimate potential effects of contaminants before detrimental impacts on populations.

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Bioremediation of a creosote contaminated site

Cited by 52 publications

References 4 publications

The Gulf Oil Spill

The Gulf Oil Spill

Bioremediation of polycyclic aromatic hydrocarbons: current knowledge and future directions

Creosote Toxicity to Photosynthesis and Plant Growth in Aquatic Microcosms

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