International Scholarly Research Notices

Research Article

Practice of Mass Transport Model Application for Biogeochemical Redox Process in Aquifer

Table 6

Biogeochemical parameters used for the two-dimensional redox model.
ParameterValue
 Dispersivityα L0.36 cm
α T0.036 cm
 Half-saturation constant 𝐾 C H 2 O 0.10 mmol/L
𝐾 O 2 , 𝐾 N O 3 , 𝐾 M n O 2 , 𝐾 F e ( O H ) 3 , 𝐾 S O 4 1 . 0 × 1 0 − 3  mmol/L
 Aerobic bacteria 𝑋 1 Yield coefficient 𝑌 O 2 0.10 mol cell-C/mol OC
Max. growth 𝜈 m a x 3.0/day
Decay rate 𝜈 𝑋 1 d e c 0.45/day
 Denitrification bacteria 𝑋 1 Yield coefficient Y N O 3 0.08 mol cell-C/mol OC
Max. growth 𝜈 m a x 2.25/day
Decay rate 𝜈 𝑋 1 d e c 0.34/day
 Mn(II)-reduction bacteria 𝑋 2 Yield coefficient 𝑌 M n O 2 0.015 mol cell-C/mol OC
Max. growth 𝜈 m a x 0.5/day
Decay rate 𝜈 𝑋 2 d e c 0.075/day
 Fe(III)-reduction bacteria 𝑋 3 Yield coefficient 𝑌 F e ( O H ) 3 0.015 mol cell-C/mol OC
Max. growth 𝜈 m a x 0.5/day
Decay rate 𝜈 𝑋 3 d e c 0.075/day
  S O 4 2 − reduction bacteria 𝑋 4 Yield coefficient Y S O 4 2 − 0.015 mol cell-C/mol OC
Max. growth 𝜈 m a x 0.45/day
Decay rate 𝜈 𝑋 4 d e c 0.068/day
 Inhibition coefficient for Mn2+ and Fe2+IC10.2 mmol/L
 Inhibition coefficient for S O 4 2 − IC20.1 mmol/L
Switching function
 Threshold concentration of oxygen [ O 2 ] t h r e s 0.015 mmol/L
 Slope of the switch function 𝑓 s l 40.0