Table $1.$ Plug Flow Reactor Parameters

If an identical breakthrough curve $($as in Q$19-$ top chart$)$ were obtained for a Packed Bed Reactor

$($PBR$)$ filled with uniform fine sand of particle diameter $0\mathrm{.}2mm$ and the properties listed

below, how many pore volumes would it take for a pulse injection of non$-$reactive

tracer to exit the bed, assuming no dispersion?

Table $2.$ Packed Bed Reactor Parameters