Maila, MPRandima, PCloete, TE2007-03-282007-06-072007-03-282007-06-072005Maila, MP, Randima, P and Cloete, TE. 2005. Multispecies and monoculture rhizoremediation of polycyclic aromatic hydrocarbons (PAHs) from the soil. International Journal of Phytoremediation, vol. 7(2), pp 87-981522-6514http://hdl.handle.net/10204/2151http://hdl.handle.net/10204/2151In this study, the authors investigated the potential of multispecies rhizoremediation and monoculture rhizoremediation in decontaminating polycyclic aromatic hydrocarbon (PAH) contaminated soil. Plant-mediated PAH dissipation was evaluated using monoplanted soil microcosms and soil microcosms vegetated with several different grass species (Brachiaria serrata and Eleusine corocana). The dissipation of naphthalene and fluorene was higher in the "multispecies" vegetated soil compared to the monoplanted and nonplanted control soil. The concentration of naphthalene was undetectable in the multispecies vegetated treatment compared to 96% removal efficiencies in the monoplanted treatments and 63% in the nonplanted control after 10 wk of incubation. Similar removal efficiencies were obtained for fluorene. However, there was no significant difference in the dissipation of pyrene in both the mono- and multi-species vegetated treatments. There also was no significant difference between the dissipation of PAHs in the monoplanted treatments with different grass species. Principle component analysis (PCA) and cluster analysis were used to evaluate functional diversity of the different treatments during phytoremediation of PAHs. Both PCA and cluster analysis revealed differences in the metabolic fingerprints of the PAH contaminated and noncontaminated soils. However, the differences in metabolic diversity between the multispecies vegetated and monoplanted treatments were not clearly revealed. The results suggest that mullispecies rhizoremediation using tolerant plant species rather than monoculture rhizoremediation have the potential to enhance pollutant removal in moderately contaminated soils.106060 bytesapplication/pdfenCopyright: 2005 CRC Press LLCBrachiaria serralaEleusine corocanaMetabolic fingerprintsMonoculture rhizoremediationMultispecies rhizoremediationPolycyclic aromatic hydrocarbonsPAHsEnvironmental sciencesMultispecies and monoculture rhizoremediation of polycyclic aromatic hydrocarbons (PAHs) from the soilArticleMaila, M., Randima, P., & Cloete, T. (2005). Multispecies and monoculture rhizoremediation of polycyclic aromatic hydrocarbons (PAHs) from the soil. http://hdl.handle.net/10204/2151Maila, MP, P Randima, and TE Cloete "Multispecies and monoculture rhizoremediation of polycyclic aromatic hydrocarbons (PAHs) from the soil." (2005) http://hdl.handle.net/10204/2151Maila M, Randima P, Cloete T. Multispecies and monoculture rhizoremediation of polycyclic aromatic hydrocarbons (PAHs) from the soil. 2005; http://hdl.handle.net/10204/2151.TY - Article AU - Maila, MP AU - Randima, P AU - Cloete, TE AB - In this study, the authors investigated the potential of multispecies rhizoremediation and monoculture rhizoremediation in decontaminating polycyclic aromatic hydrocarbon (PAH) contaminated soil. Plant-mediated PAH dissipation was evaluated using monoplanted soil microcosms and soil microcosms vegetated with several different grass species (Brachiaria serrata and Eleusine corocana). The dissipation of naphthalene and fluorene was higher in the "multispecies" vegetated soil compared to the monoplanted and nonplanted control soil. The concentration of naphthalene was undetectable in the multispecies vegetated treatment compared to 96% removal efficiencies in the monoplanted treatments and 63% in the nonplanted control after 10 wk of incubation. Similar removal efficiencies were obtained for fluorene. However, there was no significant difference in the dissipation of pyrene in both the mono- and multi-species vegetated treatments. There also was no significant difference between the dissipation of PAHs in the monoplanted treatments with different grass species. Principle component analysis (PCA) and cluster analysis were used to evaluate functional diversity of the different treatments during phytoremediation of PAHs. Both PCA and cluster analysis revealed differences in the metabolic fingerprints of the PAH contaminated and noncontaminated soils. However, the differences in metabolic diversity between the multispecies vegetated and monoplanted treatments were not clearly revealed. The results suggest that mullispecies rhizoremediation using tolerant plant species rather than monoculture rhizoremediation have the potential to enhance pollutant removal in moderately contaminated soils. DA - 2005 DB - ResearchSpace DP - CSIR KW - Brachiaria serrala KW - Eleusine corocana KW - Metabolic fingerprints KW - Monoculture rhizoremediation KW - Multispecies rhizoremediation KW - Polycyclic aromatic hydrocarbons KW - PAHs KW - Environmental sciences LK - https://researchspace.csir.co.za PY - 2005 SM - 1522-6514 T1 - Multispecies and monoculture rhizoremediation of polycyclic aromatic hydrocarbons (PAHs) from the soil TI - Multispecies and monoculture rhizoremediation of polycyclic aromatic hydrocarbons (PAHs) from the soil UR - http://hdl.handle.net/10204/2151 ER -