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Effect of Groundwater Velocity on
Pilot Scale Bioremediation of Gasoline Contaminated
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Niaz Mohammed1
Abstract The
effect of groundwater velocity onbioremediation of gasoline contaminated
sandy soil has been investigated using a pilot scale sand tank model. The
effect of hydrogen peroxide and contaminant concentration are also included.
A factorial experiment has been conducted to study three factors, groundwater
velocity, inlet BTX concentration and hydrogen peroxide dose. Observed
concentration data collected from the sand tank model have been used for
estimating the transport parameters. Three differentbiodegrdation kinetics,
namely first-order/zero-order, Monod and Michaelis Menten (a modification of
Monodkinetics considering no microbial growth) kinetics have been used to
model the biodegradation. The data have been found to fit all three models
with acceptable coefficient of regression. Groundwater velocity has been
found to be the most significant factor governing the biodegradation rate constants(determined from the first-order rate constant)
of BTX compounds. Hydrogen peroxide dose and BTX concentration have also been
found to be significant factors. biodegradation
kinetics - bioremediation - BTX – factors affecting
bioremediation - groundwater velocity - Monod kinetics |
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