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Changes in Cd and Cr fluxes during the bioremediation of phenanthrene
Author(s) -
AmezcuaAllieri M.A.,
Lead J.R.,
RodríguezVázquez R.
Publication year - 2005
Publication title -
soil use and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.709
H-Index - 81
eISSN - 1475-2743
pISSN - 0266-0032
DOI - 10.1111/j.1475-2743.2005.tb00407.x
Subject(s) - bioremediation , phenanthrene , environmental chemistry , chemistry , soil contamination , bioavailability , contamination , environmental science , soil water , soil science , biology , ecology , bioinformatics
. Different types of contaminants such as polycyclic aromatic hydrocarbons (PAHs) and metals coexist in different chemical forms in soil. Although bioremediation of organics has been widely studied, little attention has been paid to changes in metal behaviour during the bioremediation process. In this study, the diffusion gradient in thin‐film (DGT) technique was used to assess changes in potentially bioavailable Cd and Cr fluxes in soil during the bioremediation of phenanthrene. Fluxes of Cd were low (< 0.2pgcm −2 s −1 ) and increased to 0.4–0.9 pg cm −2 s −1 , while Cr(III) fluxes showed an approximately tenfold increase. Results showed that there was increased mobilization of metals associated with the fungal reduction of phenanthrene concentrations by Penicillium frequentans.