Abstract
Equilibrium and rate relationships have been determined for the sorption of divalent copper (Cu2+) and hexavalent chromium (Cr6+) onto untreated Red Fir sawdust. For both ions, the equilibrium sorption levels were determined to be a function of the solution pH and temperature. The equilibrium adsorption capacity of the sawdust for Cu2+ was found to increase with increasing pH. However, for Cr6+ the sorption capacity increased with decreasing pH. For both ions, the rate of adsorption and the equilibrium adsorption capacity increased with temperature. The sorption capacity of α-cellulose was at least an order of magnitude less than the untreated sawdust.
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Bryant, P.S., Petersen, J.N., Lee, J.M. et al. Sorption of heavy metals by untreated red fir sawdust. Appl Biochem Biotechnol 34, 777–788 (1992). https://doi.org/10.1007/BF02920596
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DOI: https://doi.org/10.1007/BF02920596