Table 1.
Primers for the PCR amplification of rDNA.
Fig 1.
Microscopic examination of Penicillium oxalicum strain SL2, focusing on conidiophores and conidia (400× magnification).
Fig 2.
The tolerance index of SL2 in PDA solid media containing different concentrations of Cr(VI).
Fig 3.
The tolerance index of SL2 in PDL media containing different concentrations of Cr(VI).
Table 2.
Performance statistics of the modified Gompertz model during training and validation periods for the modeling of growth curves of strain SL2 under Cr(VI) stress.
Table 3.
Parameters of the modified Gompertz model for describing the growth of strain SL2 at different Cr(VI) concentrations.
Fig 4.
Micrographs of strain SL2 grown in PDL under Cr(VI) stress.
Panels a, b, and c are images of strain SL2 grown for 48 h in the PDL medium containing 0, 100, or 1000 mg/L Cr(VI), respectively. Panels d, e, and f are images of SL2 grown for 144 h in the PDL medium containing 0, 100, or 1000 mg/L Cr(VI), respectively.
Fig 5.
Cr(VI) removal and pH change during the incubation of SL2 in the PDL medium.
Fig 6.
Cr(VI) removal by SL2 at different dilutions of electroplating wastewater.
C-217.1, C-96.1, and C-40.6 represent treatments with initial Cr(VI) concentrations of 217.1, 96.1, and 40.6 mg/L, respectively.
Fig 7.
The initial rate of Cr(VI) removal by SL2 at different dilutions of electroplating wastewater.
C-217.1, C-96.1, and C-40.6 represent treatments with initial Cr(VI) concentrations of 217.1, 96.1, and 40.6 mg/L, respectively. Error bars represent standard deviation. Treatments marked with the same letter are not significantly different.