The aim of the research was to verify if a Sphingobium chlorophenolicum strain C3R was effective in the degradation of phenanthrene (Ph) in agricultural soil co-contaminated by metals and mixtures of PAHs. The presence of PAHs in mixtures produced interactive effects which could either increase or decrease the utilization rate of Ph by C3R and by the native bacterial microflora. Bioaugmentation significantly improved the biodegradation rate of Ph in the presence of both cadmium and arsenic and PAH mixtures. The augmented C3R strain persisted in inoculated microcosms as monitored by the DGGE analysis and outcompeted some indigenous bacteria. The potential role of the soil bacteria in PAH degradation could be envisaged. The results indicate the applicability of S. chlorophenolicum C3R toward in situ bioremediation of sites contaminated with phenanthrene alone or co-contaminated with low molecular weight PAHs and with cadmium and arsenate.

Bioremediation of polyaromatic hydrocarbon contaminated soils by native microflora and bioaugmentation with Sphingobium chlorophenolicum strain C3R: a feasibility study in solid- and slurry-phase microcosms / M. Colombo, L. Cavalca, S. Bernasconi, V. Andreoni. - In: INTERNATIONAL BIODETERIORATION & BIODEGRADATION. - ISSN 0964-8305. - 65:1(2011 Jan 01), pp. 191-197.

Bioremediation of polyaromatic hydrocarbon contaminated soils by native microflora and bioaugmentation with Sphingobium chlorophenolicum strain C3R: a feasibility study in solid- and slurry-phase microcosms

M. Colombo
Primo
;
L. Cavalca
Secondo
;
S. Bernasconi
Penultimo
;
V. Andreoni
2011-01-01

Abstract

The aim of the research was to verify if a Sphingobium chlorophenolicum strain C3R was effective in the degradation of phenanthrene (Ph) in agricultural soil co-contaminated by metals and mixtures of PAHs. The presence of PAHs in mixtures produced interactive effects which could either increase or decrease the utilization rate of Ph by C3R and by the native bacterial microflora. Bioaugmentation significantly improved the biodegradation rate of Ph in the presence of both cadmium and arsenic and PAH mixtures. The augmented C3R strain persisted in inoculated microcosms as monitored by the DGGE analysis and outcompeted some indigenous bacteria. The potential role of the soil bacteria in PAH degradation could be envisaged. The results indicate the applicability of S. chlorophenolicum C3R toward in situ bioremediation of sites contaminated with phenanthrene alone or co-contaminated with low molecular weight PAHs and with cadmium and arsenate.
PAHs; Metals; Bioaugmentation; DGGE
Settore AGR/16 - Microbiologia Agraria
Settore CHIM/06 - Chimica Organica
8-dic-2010
Article (author)
File in questo prodotto:
File Dimensione Formato  
Bioremediation of polyaromatic hydrocarbon contaminated soils by native.pdf

accesso riservato

Tipologia: Publisher's version/PDF
Dimensione 432.59 kB
Formato Adobe PDF
432.59 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/154651
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 42
  • ???jsp.display-item.citation.isi??? 37
social impact