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Effects of bioavailable cadmium on anaerobic systems
The research objective was to develop a correlation between bioavailable cadmium (Cd) and toxicity in anaerobic systems. Toxicity assays were performed with acetate‐using methanogens in serum bottles. The bioavailable, free dissolved Cd was measured at the end of the experiments after separation in cation‐exchange resin inside dialysis bags placed in the cadmium‐spiked serum bottle samples at the end of the experiments. Measured free soluble Cd showed a good correlation with inhibition of gas production. Up to 0.09 mg/L caused ≤5% inhibition, whereas concentrations of 0.12 mg/L and higher showed >90% inhibition. Measured total soluble cadmium failed to show a good correlation with inhibition of gas production. Systems with total suspended solids (TSS) exceeding 2 400 mg/L showed less inhibition than systems with TSS of approximately 1 400 mg/L. However, when bioavailable Cd was less than 0.09 mg/L, systems with the lower TSS showed little inhibition even with spiked Cd concentrations as high as 100 mg/L.
Effects of bioavailable cadmium on anaerobic systems
The research objective was to develop a correlation between bioavailable cadmium (Cd) and toxicity in anaerobic systems. Toxicity assays were performed with acetate‐using methanogens in serum bottles. The bioavailable, free dissolved Cd was measured at the end of the experiments after separation in cation‐exchange resin inside dialysis bags placed in the cadmium‐spiked serum bottle samples at the end of the experiments. Measured free soluble Cd showed a good correlation with inhibition of gas production. Up to 0.09 mg/L caused ≤5% inhibition, whereas concentrations of 0.12 mg/L and higher showed >90% inhibition. Measured total soluble cadmium failed to show a good correlation with inhibition of gas production. Systems with total suspended solids (TSS) exceeding 2 400 mg/L showed less inhibition than systems with TSS of approximately 1 400 mg/L. However, when bioavailable Cd was less than 0.09 mg/L, systems with the lower TSS showed little inhibition even with spiked Cd concentrations as high as 100 mg/L.
Effects of bioavailable cadmium on anaerobic systems
Bhattacharya, Sanjoy K. (author) / Leslie, Robert E. (author) / Madura, Richard L. (author)
Water Environment Research ; 67 ; 1092-1094
1995-11-01
3 pages
Article (Journal)
Electronic Resource
English
Effects of Bioavailable Cadmium on Anaerobic Systems
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