SO
$_2$
is a major constituent in air pollution. Pet coke (having 6%
Sulphur) with lime stone are being used for power generation in thermal power
plants. Sulphur dioxide is produced during combustion of fuels containing
sulphur and affects the environment in number of ways like acid rain corrosion
and severe damage to health. Flue gas desulphurization (FGD) is the technique
used for removal of SO
$_2$
from exhaust flue gases in power plants. In accordance
with the invention, flue gases containing sulphur dioxide are passed through a
solution which was rich with sodium ions to produce sulphate by using SO
$_2$
monitoring kit of SO
$_2$
measurement.
To find the optimum temperature of
absorption of SO
$_2$
in NaOH solution, the study was carried out at various
temperatures. As is clear from Table 2 it is 20–25°C which is the most
appropriate for the maximum absorption of SO
$_2$
by NaOH solution. Similar sets of
experiments were carried out by varying the time intervals for absorption of
SO
$_2$
by NaOH solution. As is shown in Table 4 the increased absorption of SO
$_2$
is
observed with increase in time intervals.
