. Author manuscript; available in PMC: 2014 Jan 15.

Published in final edited form as: Water Res. 2012 Sep 18;46(19):6454–6462. doi: 10.1016/j.watres.2012.09.020

Table 1.

Properties of iron-containing minerals and observed-first order rate constants for mineral-catalyzed H₂O₂ decomposition.

Minerals	Surface area (m²/g)	Iron content (wt. %)	k_obs/m^2(b)(c) (hr⁻¹×m⁻²)
Goethite	19	62.9^(a)	0.015
Hematite	30	70.0	0.032
Amorphous Fe-oxide	166	62.9^(a)	0.097
Swy-2	32	2.6	0.022
NAu-2	69	26.2	0.012
Iron oxide-coated sand	5	1.0	0.199
FeSi-ox	521	12.3	0.007
FeAlSi-ox	423	10.9	0.003

^(a)

Values were calculated based on the FeOOH formula.

^(b)

The observed-first order rate constants (k_obs) were obtained by fitting the experimental data to the first order decay reaction rate law. The r² values of the fittings were always r² > 0.99.

^(c)

Rate constants were normalized by the total surface area of the solid used in the experiment.