Phytoremediation of Organic and Nutrient Contaminants

Schnoor, Jerald L.; Light, Louis A.; McCutcheon, Steven C.; Wolfe, N. Lee; Carreia, Laura H.

doi:10.1021/es00007a747

Cited by 754 publications

(200 citation statements)

References 13 publications

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“…Once the compounds are taken up by the plant they can be metabolized, stored (often in the root system), or volatilized. Nitroreductases and laccases are the enzymes demonstrated so far to be involved in phytodegradation of nitroaromatics [318]. The root system can also play an active role in remediation; rhizofiltration refers to the adsorption and absorption of pollutants via this route [317].…”

Section: Phytoremediation Methodsmentioning

confidence: 99%

Soils contaminated with explosives: Environmental fate and evaluation of state-of-the-art remediation processes (IUPAC Technical Report)

Kalderis

Juhasz

Boopathy

et al. 2011

Pure and Applied Chemistry

155

143

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An explosion occurs when a large amount of energy is suddenly released. This energy may come from an over-pressurized steam boiler, from the products of a chemical reaction involving explosive materials, or from a nuclear reaction that is uncontrolled. In order for an explosion to occur, there must be a local accumulation of energy at the site of the explosion, which is suddenly released. This release of energy can be dissipated as blast waves, propulsion of debris, or by the emission of thermal and ionizing radiation.Modern explosives or energetic materials are nitrogen-containing organic compounds with the potential for self-oxidation to small gaseous molecules (N 2 , H 2 O, and CO 2 ). Explosives are classified as primary or secondary based on their susceptibility of initiation. Primary explosives are highly susceptible to initiation and are often used to ignite secondary explosives, such as TNT (2,4,6-trinitrotoluene), RDX (1,3,5-trinitroperhydro-1,3,5-triazine), HMX (1,3,5,7-tetranitro-1,3,5,7-tetrazocane), and tetryl (N-methyl-N-2,4,6-tetranitroaniline).

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Section: Phytoremediation Methodsmentioning

confidence: 99%

Soils contaminated with explosives: Environmental fate and evaluation of state-of-the-art remediation processes (IUPAC Technical Report)

Kalderis

Juhasz

Boopathy

et al. 2011

Pure and Applied Chemistry

155

143

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“…Plants have been shown to take up and, in some cases, to metabolize organic pollutants (6), excess nutrients (6, 7), 2,4,6-trinitrotoluene (TNT) (8,9), and metals (10,11). Work in our laboratory has demonstrated that poplar trees are able to take up and metabolize TCE both under laboratory conditions and in a field test (12)(13)(14).…”

mentioning

confidence: 90%

Enhanced metabolism of halogenated hydrocarbons in transgenic plants containing mammalian cytochrome P450 2E1

Doty

Shang

Wilson

et al. 2000

Proc. Natl. Acad. Sci. U.S.A.

248

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“…Baker reported that plants are classified as accumulators if the heavy metal concentration ratio (shoot to root) is more than one and as excluders if this ratio is less than one (28). Substances that have a high solubility in water are not easily absorbed by plant roots (29). Due to their low solubility in water, hydrophobic chemicals are not easily absorbed in plant roots or remain around the roots.…”

Section: Discussionmentioning

confidence: 99%

Bioaccumulation and translocation factors of petroleum hydrocarbons in Aeluropus littoralis

Rafiee

Rad

Afshari

2017

Environ Health Eng Manag

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Background: Polycyclic aromatic hydrocarbons (PAHs), which consist of fused conjugated aromatic rings, not only are toxic to humans and other living organisms, but will also pollute groundwater. These compounds can be point source or non-point source and are one of the most widespread organic pollutants. Some of them are suspected carcinogens and are linked to other health problems. This study was carried out to assess the petroleum hydrocarbon phytoremediation potential of the Aeluropus littoralis species. Accumulation of PAHs in roots and upper parts of A. littoralis has been determined. Translocation factor (TF) was also calculated. Methods: In this study, soil samples were taken from the vicinity of Isfahan oil refinery, and the PAHs compounds were analyzed with gas chromatography. One-meter soil columns were prepared from the control and contaminated soil. Unplanted A. littoralis treatments were also prepared to eliminate the effects of environmental factors on the reduction of oil-based contaminants. Seventeen weeks after planting, soil columns were sampled at 25, 50, 75, and 100 cm depths, and the concentration of petroleum hydrocarbons and number of oil-degrading bacteria were counted. Moreover, the roots and shoots of A. littoralis were separated and weighed. Results: Results indicated that A. littoralis reduced the concentration of petroleum hydrocarbons to a significantly higher extent than the control treatment. Increasing depth was associated with improved petroleum hydrocarbon concentrations and decreased number of oil-degrading bacteria. Mostly, the bioaccumulation factor (BAF) of PAHs was <1, which shows A. littoralis could be an excluder of PAHs. The results also showed that the TF of PAHs was less than one, and hence, A. littoralis could be considered as an accumulator of PAHs. Conclusion: It can be concluded that this species is suitable for use in the phytoremediation of PAHS contamination. For further confirmation, an evaluation under field conditions should be undertaken. Keywords: Biodegradation, Soil, Polycyclic aromatic hydrocarbons, Aeluropus littoralis plant Citation: Rafiee M, Jahangiri Rad M, Afshari A. Bioaccumulation and translocation factors of petroleum hydrocarbons in Aeluropus littoralis.

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Phytoremediation of Organic and Nutrient Contaminants

Cited by 754 publications

References 13 publications

Soils contaminated with explosives: Environmental fate and evaluation of state-of-the-art remediation processes (IUPAC Technical Report)

Soils contaminated with explosives: Environmental fate and evaluation of state-of-the-art remediation processes (IUPAC Technical Report)

Enhanced metabolism of halogenated hydrocarbons in transgenic plants containing mammalian cytochrome P450 2E1

Bioaccumulation and translocation factors of petroleum hydrocarbons in Aeluropus littoralis

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