| Abstract | work was conducted to investigate the pendimethalin
biodegradation by Phanerochaete chrysosporium in aquatic system
and different types from soils. P. chrysosporium biomass and atrazine
degradation were found to be optimum at pH 7 and 30 °C. Additional
carbon sources (i.e., glucose, mannitol and phenol) and nitrogen
sources (i.e., ammonium sulfate and sodium nitrate) decreased
pendimethalin degradation. P. chrysosporium was able to dissipate
95% pendimethalin in liquid medium at pH 7 and 30 °C after 28 days
and its half-life was 6.44 days compared to 53.9 days in uninoculated
medium. Results showed also that pendimethalin was degraded faster
by P. chrysosporium in sandy soil than clay soil compared to their
respective uninoculated soils after 28 days and their half-lives were
4.4, 8.4, 62.43 and 64.7 days, respectively. The degradation of
pendimethalin was coinciding with increasing microbial biomass in
both pendimethalin contaminated soils comparing with control
treatments. This study has shown that P. chrysosporium could be
applied to remediate pendimethalin contaminated water and soils. |