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Abstract

ABSTRACT:Groundwater pollution by heavy metals, arising either from natural soil sources or from human activities, is a matter of extreme concern. In this article, contaminated water has been treated with three arm star polymers based on 2, 4, 6-tris hydroxymethyl phenol and polyacryamide.

Selective Removal of Mercury(II) Using Hydrogels Prepared by Gamma Radiation

“…from 1626 to 1600 cm -1 and from 1294 to 1243 cm -1 , respectively. 34 Characteristic infrared absorption bonds of the HM/ACR hydrogel linkages at the amide I (1600−1700 cm -1 ; C=O stretch weakly coupled with C-N stretch and N-H bending), amide II (1500−1600 cm -1 ; C-N stretching strongly coupled with N-H bending) and amide III (1200−1350 cm -1 ; N-H plane bending coupled with C−N stretching) regions correspond to the amide structure. 35 The vibration shifting in the hydrogels may be caused by the binding of Hg 2+ to the amide groups of polymer chains in the HM/ACR hydrogel.…”

“…Thus, with C b in mol•L -1 , and P is base mol (moles of monomer units) per liter the solute represents the average number of molecules of solute bound to each monomer unit at that free solute concentration. 34 Adsorption kinetics and equilibria are two critical physicochemical properties for evaluating the sorption process as a unit process. 37,38…”