C D	drag coefficient (dimensionless)
D TCE−water	diffusion coefficient (m2/s)
Fe	total quantity of all iron species (mmol)
(H2O2)0	initial total quantity of hydrogen peroxide (mmol)
[H2O2]	hydrogen peroxide concentration (mmol/L)
[H2O2]0	initial hydrogen peroxide concentration (mmol/L)
k c	mass transfer coefficient (m/s)
k′TCE	fitted first-order rate constant for constant [OH·] model (s−1)
k″TCE	observed rate constant for varying [OH·] model (dimensionless)
M TCE	molecular weight of TCE (g/mol)
n	number of TCE droplets (dimensionless)
[OH·]	hydroxyl radical concentration (mmol/L)
R	droplet radius (m)
Re	Reynolds number (dimensionless)
S	surface area of single droplet (m2)
Sc	Schmidt number (dimensionless)
Sh	Sherwood number (dimensionless)
TCE0	initial total quantity of TCE (mmol)
[TCE]aq	aqueous-phase TCE concentration (mmol/L)
[TCE]aq,0	initial aqueous-phase TCE concentration (mmol/L)
[TCE]sat	TCE saturation concentration (mmol/L)
U	velocity of droplet relative to surrounding fluid (m/s)
V	reactor volume (L)
W r	mass flux in radial direction (mmol s−1 m−2)
α	proportionality constant relating [OH·] and d[H2O2]/dt [Equations (30, 31)] (s)
δ	droplet boundary layer thickness (m)
ν	kinematic viscosity of water (m2/s)
ρTCE	density of TCE (g/m3)