Nickel and copper removal study from aqueous solution using new cationic poly[acrylamide/N,N‐DAMB/N,N‐DAPB] super absorbent hydrogel

Abstract

A new cationic poly[acrylamide/N,N-diallyl morpholinium bromide/N,N-diallyl piperidinium bromide] super absorbent hydrogels (H1-H7) were prepared via microwave irradiated free radical cyclopolymerization using different composition. By the swelling study, hydrogel H1 is found to bear good swelling properties amongst all prepared hydrogels. The hydrogel H1 has been characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM), and TGA analysis. A batch system was applied to study the adsorption of Ni(II) and Cu(II) from aqueous solutions by hydrogel H1. The effect of treatment time, pH of the medium, amount of adsorbent doses, and initial feed concentration of metal ion on adsorption of Ni(II) and Cu(II) from their solution were also investigated. Adsorption of Ni(II) and Cu(II) increases with the increase in treatment time, adsorbent doses, and initial feed concentration and decreases with the increase in pH of the medium. The desorption of metal ions were carried out using 1N HCl and 0.5N H 2 SO 4.

Removal of heavy metal ions from aqueous solution by superabsorbent poly (NIPAAm/DAPB/AA) amphoteric nanohydrogel

“…Also, hydrogels can control the diffusion process and bind chemical species through their polar functional groups. These functional groups existing in cross-linked polymeric materials can be manipulated easily for specific applications, such as functioning as complex agents for heavy metal ions removal from wastewater [12,13].…”

“…(2015) [1][2][3][4][5][6][7][8][9][10][11][12][13][14] www.deswater.com doi: 10.1080/19443994.2015.1060171 amine, carboxylic acid, and sulfonic acid groups of hydrophilic polymers, which may be cross-linked by chemical or physical interactions. Such hydrophilic polymers, which can absorb, swell, and retain aqueous solutions up to hundred times to their own weight, are able to expand in volume with respect to changes in external parameters, such as pH, temperature, and ionic strength [11].…”

“…Entire removal study and characterization were performed on nanohydrogel V-03 as it has maximum percentage swelling. Removal study was carried out by taking specified amount (0.025 g) of adsorbent in 50 mL of metal ions solution at various initial concentrations (100-500 ppm), pH values (pH range [2][3][4][5][6][7][8][9][10][11][12][13][14], and adsorption doses (10-50 mg). After equilibrium, concentration of metal ions remaining in the solution was determined with a UV-visible spectrophotometer after 8 h. Maximum adsorption capacity and/or % removal efficiency (RE %) of nanohydrogels were calculated using the following Eqs.…”

MnFe2O4 nano spinels as potential sorbent for adsorption of chromium from industrial wastewater

“…These heavy metal ions can be accumulated through the food chain even at low concentrations which leads to serious problems for aquatic life as well as for human health, plant life, and animals [1][2][3]. Heavy metals are discharged to receiving environments from various industrial production processes such as electric plating, mining, refining, printing, and dyeing [4,5].…”

Novel Cationic Poly[AAm/NVP/DAPB] Hydrogels for Removal of Some Textile Anionic Dyes from Aqueous Solution

“…This can absorb enormous amount of water up to thousands of times to their own weight (16). The swelling behavior of hydrogels may be characterized by water adsorption (13).…”