Water‐insoluble polymers containing amine, sulfonic acid, and carboxylic acid groups: Synthesis, characterization, and metal‐ion‐retention properties

Abstract

Crosslinked poly(acryloylmorpholine) and its copolymers poly(acryloyl morpholine-co-acrylic acid) and poly(acryloylmorpholine-co-2-acrylamide-2-methyl-1-propane sulfonic acid) were synthesized by radical polymerization. The resins were completely insoluble in water and were characterized with Fourier transform infrared spectroscopy and thermal analysis. The metal ions Ag(I), Cu(II), Cd(II), Hg(II), Zn(II), Pb(II), Al(III), and Cr(III) were investigated under competitive and noncompetitive conditions by a batch equilibrium procedure. The resin-metal-ion equilibrium was achieved before 5 min. The recovery of the resin was investigated at 20°C with different concentrations of HNO 3 and HClO 4 .

Poly(2-acrylamidoglycolic acid-co-2-acrylamide-2-methyl-1-propane sulfonic acid) and poly(2-acrylamidoglycolic acid-co-4-styrene sodium sulfonate): synthesis, characterization, and properties for use in the removal of Cd(II), Hg(II), Zn(II), and Pb(II)

“…On the other hand, the column method is more efficient that the batch method at industrial level. The desirable properties of ion exchangers are: (1) high capacity for the metal ion (2) fast kinetics and rapid equilibration with metal-containing solution, and (3) high mechanical strength and toughness of the exchanger/chelating particles [12].…”

Natural and Synthetic Polyampholytes, 2

“…[123][124][125] The ability of polyampholytes to form stable chelate structures can be used for enrichment and recovery of metal ions from wastewater and polluted soils. [126] It was established [127,128] that in some cases polyampholytes bind metal ions at definite pH values and release them strictly at the corresponding pI. If the polyampholyte is soluble near a pI that occurs within the basic region, then the released transition metal ions precipitate as metal hydroxides, while the polyampholyte remains in the supernatant.…”

Untitled

“…As a consequence of industrialization and urbanization [3], the presence of heavy metal ions in water streams has been promptly increasing since the last 50 years [4,5]. Industrial wastewaters with dissolved toxic heavy metals such as arsenic, cadmium and mercury are reckoned to be non-biodegradable, and accumulated in humans and other living organisms; thus, ultimately inducing various diseases and malfunctioning [6][7][8]. Mercury, being non-biodegradable, has maximum permissible contaminant level of 2 ppb in drinking water.…”