From Table 3, it was clear that the modified homemade
filter media was very potential for the removal of arsenic
from drinking water as compared to homemade filter media under all the treatment time conditions. The maximum removal of arsenic for both the filter media was achieved with a treatment time of 10 h and the residual value of arsenic was 0.009 mg/l and 0.07 mg/l, respectively for modified homemade filter media and homemade filter
media. Contribution of crushed bricks in percent removal of arsenic was also calculated and maximum value was
attained with a treatment time of 10 h and it was 46.92%.
For other treatment times, the values of percent arsenic removal along with treatment time were 7.69% with 2 h,
15.38% with 4 h, 38.46% with 6 h, 46.15% with 8 h and 46.92% with 12 h. It was also depicted that there was a regular trend for percent removal of arsenic under all the treatment time.