A simplified method to determine the powdered activated carbon dose required to remove methylisoborneol

Equilibrium data obtained from a natural water with several different initi al concentrations of 2-methylisoborneol (MIB) plot as a single line on a pe rcent remaining, C-e/C-o x 100%, versus carbon dose, C-o, plot. This indica tes that the percent removal of MIB is independent of its initial concentra tion in natural water for a given PAC dose. The relationship is specific fo r each type of PAC, and it is not valid at very high MIB concentrations, ho wever. These data show that, predicting the minimum amount of carbon necess ary to effectively mitigate any MIB episode, may be accomplished by analyzi ng a single bottle-point isotherm. The robustness of this approach was show n through the use of four water sources, fourteen different carbons, and MI B concentrations ranging from 45 ng/l to 178 mu g/l. (C) 1999 Published by Elsevier Science Ltd on behalf of the IAWQ. All rights reserved.