A porous cylinder absorbent was used to soak up a toxic material. This material is now to be destroyed by immersing the cylinder in a neutralizing bath (Figure P6.29). The toxic liquid diffuses from the cylinder and reacts with the neutralizer at the outer surface.

\[N_{\text {toxin }}+N_{\text {neut }} \rightarrow N_{\text {nontoxic }}\]

The neutralizer is present in great excess, so the reaction is essentially first order in toxin concentration. We can assume dilute solutions within the absorbent as a first approximation. Determine the concentration profile of nerve gas in the membrane as a function of time.

Transcribed Image Text:

FIGURE P6.29 Nerve Gas Neutralizer D nm - = k"c