A New Method for the Deposition of Metallic Silver on Porous Ceramic Water Filters

Table 1

Linear velocity, dispersion coefficient, and hydraulic conductivity for silver nanoparticle and silver nitrate filters before and after 2 weeks of constant flow of E. coli.

	v (cm/min)	Δv (%)	D (cm^2/min)	ΔD (%)	K (cm/min)	Average porosity (%)
Silver nanoparticle initial	3.17 × 10^−2		1.52 × 10^−2		3.62 × 10^−4	33.48
Silver nanoparticle final	2.84 × 10^−2	−10.3	7.58 × 10^−3	−50.2	1.84 × 10^−4
Silver nitrate initial	3.02 × 10^−2		9.41 × 10^−3		7.64 × 10^−4	32.24
Silver nitrate final	2.48 × 10^−2	−17.73	5.08 × 10^−3	−46.01	1.82 × 10^−4