Laterite soil samples were studied to monitor their
efficiency in removing arsenic from contaminated water by adsorption filtration
method in laboratory condition. Prepared 10 mg L-1 solution
of As3+/As5+ was passed through the six soil samples.
At room temperature, a batch of three different samples adsorbs 1010,
925 and 932.5 mg kg-1 of arsenic and their removal efficiency
were found to be 58.74, 65.32 and 65.39%, respectively. At 100 °C
temperature, the three specimens studied show the adsorptivity of 54.40,
63.47 and 58.69%, while the respective amount adsorbed was calculated
848, 694 and 760 mg kg-1, respectively. Studied IR spectra
of the sample of different temperature gradients revealed that the efficiency
of a particular composite is high temperature sensitive and the most important
and noticeable performance of soil samples is observed when the samples
are treated at room temperature, this is the optimum temperature for these
soil samples. Above this temperature the efficiency decline gradually.
M.A. Halim, S.A.M. Waliul Hoque, M.K. Hossain, A.H.M. Saadat, M.A. Goni and M. Saiful Islam, 2008. Arsenic Removal Properties of Laterite Soil by Adsorption Filtration Method. Journal of Applied Sciences, 8: 3757-3760.