The state variables of our model

The concentrations of the chemicals of concern (COCs) in each cell are the state variables of our model.
Ammonium, NH3
Produced by nitrogen cycle in the dump, and treated by nitrogen cycle in the rhizosphere
Nitrate, NO3
Produced by nitrogen cycle in the dump, and treated by nitrogen cycle in the rhizosphere
Biological Oxygen Demand, BOD
results in H2O and CO2
Metals
sequestered in organic forms in rhizosphere
react with H2S producing metal sulfates
Hydrocarbons
results in H2O and SO2
Sulfate, SO3
reacts with BOD to produce H2S

Revised by Ralph Abraham 17 August 1998