The industrial pollution is exponentially growing in the developing countries due to the discharge of untreated effluents
from the industries in the open atmosphere. This may cause severe health hazards in the general public. To reduce this effect,
it is essential to remove the toxic and heavy metals from the effluents before their disposal into the biosphere. In this
context, samples of the effluents were collected from the textile/yarn, ceramics and pulp/paper industries and the concentrations
of the toxic metal ions were determined using neutron activation analysis (NAA) technique. The observed concentration values
of the As, Cr and Fe ions, in the unprocessed industrial effluents, were 4.91 ± 0.8, 9.67 ± 0.7 and 9.71 ± 0.8 mg/L, respectively
which was well above the standard recommended limits (i.e. 1.0, 1.0 and 2.0 mg/L, respectively). In order to remove the toxic metal ions from the effluents, the samples were treated with pea nut husk fence.
After this treatment, 91.5% arsenic, 81.9% chromium and 66.5% iron metal ions were successfully removed from the effluents.
Then the treated effluents contained concerned toxic metal ions concentrations within the permissible limits as recommended
by the national environmental quality standards (NEQS).