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

  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},
  volume={33 4},
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… 

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