Open AccessEffect of bioaugmentation and supplementary carbon sources on degradation of polycyclic aromatic hydrocarbons by a soil‐derived culture
Author(s) -
Van Herwijnen René,
Joffe Boris,
Ryngaert Annemie,
Hausner Martina,
Springael Dirk,
Govers Harrie A.J.,
Wuertz Stefan,
Parsons John R.
Publication year - 2006
Publication title -
fems microbiology ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.377
H-Index - 155
eISSN - 1574-6941
pISSN - 0168-6496
DOI - 10.1111/j.1574-6941.2005.00001.x
Subject(s) - bioaugmentation , biostimulation , phenanthrene , bioremediation , environmental chemistry , chemostat , degradation (telecommunications) , biodegradation , soil contamination , enrichment culture , soil microbiology , biology , contamination , chemistry , soil water , bacteria , ecology , computer science , telecommunications , genetics
The degradation of polycyclic aromatic hydrocarbons (PAHs) by an undefined culture obtained from a PAH‐polluted soil and the same culture bioaugmented with three PAH‐degrading strains was studied in carbon‐limited chemostat cultures. The PAHs were degraded efficiently by the soil culture and bioaugmentation did not significantly improve the PAH degrading performance. The presence of PAHs did, however, influence the bacterial composition of the bioaugmented and non‐bioaugmented soil cultures, resulting in the increase in cell concentration of sphingomonad strains. the initial enhancement of the degradation of the PAHs by biostimulation gradually disappeared and only the presence of salicylate in the additional carbon sources had a lasting slightly stimulating effect on the degradation of phenanthrene. The results suggest that bioaugmentation and biostimulation have limited potential to enhance PAH bioremediation by culture already proficient in the degradation of such contaminants.