Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2005 by Universidad Católica de Valparaíso -- Chile
Vol. 8 No. 1, Issue of April 15, 2005


Figure 5. Effect of contact time on removal of chromium ions using different adsorbents.
Cr (VI) concentration was 20 mg/l;
pH of solution was 4;
Amount of each adsorbent: 40 g/l;
Agitation speed: 200 rpm;
Temperature was maintained at 25ºC.

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