%0 Journal Article
%T A mathematical Model for Cadmium Removal using A sulfate Reducing
Bacterium: Desulfovibrio alaskensis 6SR
%J International Journal of Environmental Research
%I University of Tehran/Springer
%Z 1735-6865
%A López-Pérez, P.A.
%A Neria-González, M.I.
%A Flores-Cotera, L.B.
%A Aguilar-López, R.
%D 2013
%\ 04/01/2013
%V 7
%N 2
%P 501-512
%! A mathematical Model for Cadmium Removal using A sulfate Reducing
Bacterium: Desulfovibrio alaskensis 6SR
%K Desulfovibrio alaskensis
%K dynamic
%K Modeling
%K Cadmium removal
%K Kinetic
%K Anaerobic
%R 10.22059/ijer.2013.630
%X In this work, an unstructured-type mathematical model was developed to simulatecadmium (Cd2+) removal by Desulfovibrio alaskensis 6SR, which is a recently described sulfatereducing bacterium, whose capacity for removing heavy metals are being studied. Three processesare considered in the model: 1) the sulfate reduction process, 2) the consumption of lactate ascarbon source, and 3) the metal removal. The model was tested with different initial Cd2+ concentrations(50, 100, 170, and 190 mg/L), and it accurately predicted the behavior of experimental data withsatisfactory correlation coefficients (R2>0.97). In addition, the model showed that the H2S productionrate and initial concentration of Cd2+ are key operating variables in a bioreactor. Desulfovibrioalaskensis 6SR was able to remove more than 99.9% of cadmium in a batch process, where the initialconcentration was 170 mg/L. The model, applied to a continuous process, predicted a maximum Cd2+removal of 99.1% with the same initial concentration. Also, the model predicted the inhibitory effectof initial Cd2+ concentrations above 190 mg/L. The mathematical model developed can be used foroptimization and control purposes.
%U https://ijer.ut.ac.ir/article_630_0b7eb5ee3bc366f492eeda38968047a6.pdf