Chelating polymer bearing triazolylazophenol moiety as the functional group

Abstract

synopsisThe chelating polymer-bearing triazolylazophenol moiety as the functional group was synthesized, its metal adsorption properties for 6 divalent heavy metal ions; Co2+, Ni2+, Cuz+, Zn2+, Cd2+, and Pb2+ were investigated. The capacity of the polymer for Cu2+ achieved 8.7 m&/g in pH 5.3 solution. The polymer showed remarkable color changes from orange to red violet or blue violet with its chelations to the heavy metal ions. The metal adsorption rates of the polymer were rapid in performing complete capacity saturation of heavy metal ions in about 30 min. The capacities varied little the presence of alkali or alkaline earth metal ions in solutions. The perfect elimination of metals from the polymer-M2+ chelates were performed with mineral acid solutions. The metal ions; Cu2+ and Ni2+ in plating-process solutions were effectively removed by the chelating polymer, and the polymer can be practically used for the removal of these ions from waste water.

Anionic/Cationic Membranes Obtained by a Radiation Grafting Method for Use in Waste Water Treatment

“…4 Various forms of synthetic polymers containing complexing molecules which are available at low cost have emerged as among the most important materials for the synthesis of new sorbents. 5,6 In previous studies,7h9 copolymers of acrylic monomers grafted onto Ñuorinated polymers were obtained. The conversion of the graft copolymers into metal acrylate copolymer complexes was carried out by treating with di †erent metal salts.…”

Characteristic properties of polypropylene cationic fabrics and their derivatives

“…Recently, there has been interest in the use of chelating sorbents in the fields of water treatment and pollution control 6. Various forms of synthetic polymers containing complexes molecules are available on the market at low cost, and they have emerged as among the most important materials for the syntheses of new sorbents 7, 8…”

Separation and extraction of some heavy and toxic metal ions from their wastes by grafted membranes

“…Recently, there has been a substantial growth of interest in the use of chelating sorbents in the field of water treatment and pollution control 4. Various forms of synthetic polymers containing complexing molecules which are available at low cost have emerged as among the most important materials for the synthesis of new sorbents 5, 6…”