Effect of cobalt sorption on metal fractionation in anaerobic granular sludge.

@article{Osuna2004EffectOC,
  title={Effect of cobalt sorption on metal fractionation in anaerobic granular sludge.},
  author={M. Bego{\~n}a Osuna and Eric D. van Hullebusch and Marcel H. Zandvoort and J. Iza and Piet Nicolaas Luc Lens},
  journal={Journal of environmental quality},
  year={2004},
  volume={33 4},
  pages={
          1256-70
        }
}
A sequential extraction procedure was applied to two anaerobic methanogenic sludges (Eerbeek and Nedalco) to examine the speciation of micro- and macronutrients in the sludges after cobalt sorption by exposing the sludge to a 1 mM Co solution for 4 d at pH 7 and 30 degrees C. The effect of different physicochemical conditions on cobalt sorption was studied as well: effect of pH (6-8), effect of competition by a second trace element (Ni or Fe), modification of the granular matrix by… 

Cobalt toxicity in anaerobic granular sludge: influence of chemical speciation

The toxicity of cobalt to granular sludge can be estimated based on the equilibrium-free cobalt concentration, proposed to be the key parameter to correlate with cobalt toxicity.

Nickel and cobalt sorption on anaerobic granular sludges: kinetic and equilibrium studies

The kinetics and equilibria of sorption of the divalent metal ions cobalt and nickel onto anaerobic granular sludge are described. Single component and binary equimolar systems were studied at

Screening of trace metal supplementation for black water anaerobic digestion

Se and Cu additions demonstrate the potential to improve the methane production from SBW by having a significant negative effect on methane production and Mn addition enhanced the toxic effect.

References

SHOWING 1-10 OF 35 REFERENCES

Effect of Long‐Term Cobalt Deprivation on Methanol Degradation in a Methanogenic Granular Sludge Bioreactor

Investigation of the effect of the trace metal cobalt on the conversion of methanol in an upflow anaerobic sludge bed (UASB) reactor found it had a strong impact on the methanogenic activity of the sludge.

Effects of trace element addition on volatile fatty acid conversions in anaerobic granular sludge reactors

Surprisingly, maximum specific activity tests using individual trace metals showed that the addition of a particular trace element in the activity test medium did not affect the degradation rates of a specific substrate, i.e. acetate, propionate, butyrate and methanol.

Precipitation, chelation, and the availability of metals as nutrients in anaerobic digestion. II. Applications

The significant discrepancy between the measured level of the soluble metal ion Fe2+ and the calculated level in the case studies presented indicates that natural chelating compounds may play a vital role in providing available metal ions to the microorganisms of an anaerobic digester.