In conclusion, we have reported a simple and effective method
for the removal of heavy metal ions from pharma-effluents by using graphene-oxide nano-sheets as nano-sorbent material. GO
was found to have a great efficacy on adsorption process of Pd(II),
Ni(II) and Cr(VI) metal ions. The adsorption efficiency of GO was
evaluated for their effective removal of heavy metal ions from
pharma-waste effluents using atomic absorption spectroscopy.
Our results have shown that the concentration of GO at 70 mg
removes all the heavy metal ions effectively with the permissible
pH of 8.00 and very low conductivity of 0.027 dS/m in 100 mL
effluent. Also, the adsorption isotherm model and their adsorption
kinetics were discussed briefly to understand the adsorption
procedure. Our experiments show a new path way for the removal
of toxic heavy metal ions from pharma-waste effluents using GO
based nano-sorbent materials which will be a potential candidate
in future industrial waste-water treatment and applications