Effects of alfalfa and organic fertilizer on benzo[a]pyrene dissipation in an aged contaminated soil

Dali, Fu; Teng, Ying; Luo, Yongming; Tu, Chen; ShiXing, Li; Li, Zhengao; Christie, Peter

doi:10.1007/s11356-011-0672-4

Cited by 38 publications

(8 citation statements)

References 40 publications

(44 reference statements)

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“…Unlike L. perenne , M. sativa may influence benzo[ a ]pyrene dissipation by altering soil pH. Nutrient depletions especially nitrogen due to competition between the plants and soil microbes have been shown to affect microbial degradation of PAHs (Fu et al 2012 ). This may also explain the greater inhibitory effect on B[ a ]P dissipation by L. perenne compared to M. sativa with nitrogen fixing ability.…”

Section: Discussionmentioning

confidence: 99%

Effect of single and mixed polycyclic aromatic hydrocarbon contamination on plant biomass yield and PAH dissipation during phytoremediation

Afegbua

Batty

2018

Environ Sci Pollut Res

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Polycyclic aromatic hydrocarbon (PAH)-contaminated sites have a mixture of PAH of varying concentration which may affect PAH dissipation differently to contamination with a single PAH. In this study, pot experiments investigated the impact of PAH contamination on Medicago sativa, Lolium perenne, and Festuca arundinacea biomass and PAH dissipation from soils spiked with phenanthrene (Phe), fluoranthene (Flu), and benzo[a]pyrene (B[a]P) in single and mixed treatments. Stimulatory or inhibitory effects of PAH contamination on plant biomass yields were not different for the single and mixed PAH treatments. Results showed significant effect of PAH treatments on plant growth with an increased root biomass yield for F. arundinacea in the Phe (175%) and Flu (86%) treatments and a root biomass decrease in the mixed treatment (4%). The mean residual PAHs in the planted treatments and unplanted control for the single treatments were not significantly different. B[a]P dissipation was enhanced for single and mixed treatments (71–72%) with F. arundinacea compared to the unplanted control (24–50%). On the other hand, B[a]P dissipation was inhibited with L. perenne (6%) in the single treatment and M. sativa (11%) and L. perenne (29%) in the mixed treatment. Abiotic processes had greater contribution to PAH dissipation compared to rhizodegradation in both treatments. In most cases, a stimulatory effect of PAH contamination on plant biomass yield without an enhancement of PAH dissipation was observed. Plant species among other factors affect the relative contribution of PAH dissipation mechanisms during phytoremediation. These factors determine the effectiveness and suitability of phytoremediation as a remedial strategy for PAH-contaminated sites. Further studies on impact of PAH contamination, plant selection, and rhizosphere activities on soil microbial community structure and remediation outcome are required.

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Section: Discussionmentioning

confidence: 99%

Effect of single and mixed polycyclic aromatic hydrocarbon contamination on plant biomass yield and PAH dissipation during phytoremediation

Afegbua

Batty

2018

Environ Sci Pollut Res

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“…Recently, rhizoengineering has gained attention to enhance the removal of POPs from the environment (Thijs and Vangronsveld 2015). In rhizoengineering, the aim is to favor the population of rhizobacteria by adopting many possible strategies including nutrient adjustments, flavonoid regulations, and facilitating degradation by the inoculation of transgenic strains (Fu et al 2012). Many POPs, especially PCBs, have been reported to be successfully remediated by the adjustment of flavonoids, apigenin, and naringenin (Narasimhan et al 2003).…”

Section: Plant-rhizobacteria Partnershipsmentioning

confidence: 99%

Plant–bacteria partnerships for the remediation of persistent organic pollutants

Arslan

Imran

Khan

et al. 2015

Environ Sci Pollut Res

176

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High toxicity, bioaccumulation factor and widespread dispersal of persistent organic pollutants (POPs) cause environmental and human health hazards. The combined use of plants and bacteria is a promising approach for the remediation of soil and water contaminated with POPs. Plants provide residency and nutrients to their associated rhizosphere and endophytic bacteria. In return, the bacteria support plant growth by the degradation and detoxification of POPs. Moreover, they improve plant growth and health due to their innate plant growth-promoting mechanisms. This review provides a critical view of factors that affect absorption and translocation of POPs in plants and the limitations that plant have to deal with during the remediation of POPs. Moreover, the synergistic effects of plant-bacteria interactions in the phytoremediation of organic pollutants with special reference to POPs are discussed.

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“…2). It is possible that the soil properties appeared to enhance the dissipation of B[a]P. Soil pH was slightly lower in aged soils than in freshly spiked soils after 60 days of planting (Table 2) and according to Fu et al (2012), a relatively lower soil pH may be conducive for the degradation of B[a]P. It is known that B[a]P is a semivolatile PAH and can evaporate from soil during greenhouse studies. Although, this study did not try to ascertain the direct method of dissipation, it was clear that planting Z. mays played a major role in the dissipation of B[a]P in aged co-contaminated soils.…”

Section: Discussionmentioning

confidence: 99%

“…2). The difference in B[a]P concentration between unplanted and planted soil reflects the enhanced (Fu et al 2012). In the present study, soil aging as well as planting with Z. mays influenced the soil pH (Table 2).…”

Section: Discussionmentioning

confidence: 99%

Effect of Soil Aging on the Phytoremediation Potential of Zea mays in Chromium and Benzo[a]Pyrene Contaminated Soils

Chigbo

2015

Bull Environ Contam Toxicol

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This study compared the phytoremediation potential of Zea mays in soil either aged or freshly amended with chromium (Cr) and benzo[a]pyrene (B[a]P). Z. mays showed increased shoot biomass in aged soils than in freshly spiked soils. The shoot biomass in contaminated soils increased by over 50% in aged soil when compared to freshly amended soils, and over 29% more Cr was accumulated in the shoot of Z. mays in aged soil than in freshly amended soil. Planting Z. mays in aged soil helped in the dissipation of more than 31% B[a]P than in freshly spiked soil, but in the absence of plants, there seemed to be no difference between the dissipation rates of B[a]P in freshly and aged co-contaminated soil. Z. mays seemed to enhance the simultaneous removal of Cr and B[a]P in aged soil than in freshly spiked soil and hence can be a good plant choice for phytoremediation of co-contaminated soils.

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Effects of alfalfa and organic fertilizer on benzo[a]pyrene dissipation in an aged contaminated soil

Cited by 38 publications

References 40 publications

Effect of single and mixed polycyclic aromatic hydrocarbon contamination on plant biomass yield and PAH dissipation during phytoremediation

Effect of single and mixed polycyclic aromatic hydrocarbon contamination on plant biomass yield and PAH dissipation during phytoremediation

Plant–bacteria partnerships for the remediation of persistent organic pollutants

Effect of Soil Aging on the Phytoremediation Potential of Zea mays in Chromium and Benzo[a]Pyrene Contaminated Soils

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