Use of super absorbent hydrogels derivative from acrylamide with itaconic acid and itaconates to remove metal ions from aqueous solutions

Abstract

Poly(acrylamide‐co‐itaconic acid) (AAm/IA) and poly(acrylamide‐co‐monomethoxyethyl itaconate) (AAm/MEI) hydrogels (HGs) synthesized at different molar ratios were used to study the adsorption of some metal ions as Cu2+, Ni2+, Pb2+, Cd2+, and Fe3+ in aqueous solutions at different concentration: 10, 50, 100, 500, and 1000 mg L−1. Statistical analysis was performed and the effect of the metal ion, ion concentration, and hydrogel (HG) composition, on adsorption and adsorption efficiency, was evaluated for both HGs studied (AAm/IA and AAm/MEI) and each factor gave rise to significant differences (P ≤ 0.05). The adsorption depends on the type of ion, its concentration, and also influenced by the type and composition of the HGs. For each system the adsorption efficiencies for all ions were similar with exception of Fe3+, which showed the highest adsorption efficiency in AAm/MEI HG, but the less for the AAm/IA. For both systems, the maximum adsorption efficiency was observed when the molar ratio AAm/IA or AAm/MEI is 80/20. When the adsorption was carried out with individual ions, AAm/MEI HG was more efficient than AAm/IA. For a multielement sample of Cu2+, Ni2+, Pb2+, and Cd2+, both HGs could adsorb all the ions and their behavioral trend was the same in both cases, in which the adsorption efficiency was Pb2+ > Cu2+ > Cd2+ > Ni2+. The results of the statistical analysis evidence the advantage of its use in this type of studies. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 46999

Biomass-Derived Production of Itaconic Acid as a Building Block in Specialty Polymers

“…Crosslinked structures with stable connections are chemical hydrogels and those resulted from polymer chain entanglements or other physical interactions are physical hydrogels [129,130]. Hydrogels are frequently used in both medical biology [131] and biotechnology [132] due to their capability to absorb high amounts of liquid.…”

“…The adsorption capability in the multi-element sample was maximum with all the ions absorbed for both hydrogels at a molar ratio of 80/20. The trend of ion adsorption in both hydrogels was identical: Pb 2+ > Cu 2+ > Cd 2+ > Ni 2+ [132].…”

Effective Removal of Calcium and Magnesium Ions from Water by a Novel Alginate–Citrate Composite Aerogel

“…Therefore, developing a new method of removing excessive Ca 2+ and Mg 2+ from water has important application prospects [2]. At present, the methods for Ca 2+ and Mg 2+ removal from water mainly include precipitation [3], boiling [4], use of lime-soda ash [5], ion exchange [6], electrodialysis [7], and adsorption [8,9]. Among such treatment methods, the adsorption method has attracted much attention in recent years because of its advantages of simple operation, recyclability, and low cost [10,11].…”

Synthesis of Nonaromatic Macromolecular Luminogens, DFT Studies on Photophysics, and O‐Donor Selective On−Off Sensors: Contributions of In Situ N‐(Methylol)Acrylamido Comonomers

“…[34] Moreover, a few MSA based materials have been reported to present selectivity and adsorbing efficiency for Fe(III). [35,36] Accordingly, being composed of NMPA and MSA as major components, intrinsically fluorescent ML2 should function as selective and sensitive sensor for Fe(III), [35] along with biocompatibility and cellular attachment capabilities necessary for bioimaging applications. [35] It is expected that the differences in structural attributes of ML1 and ML2 should contribute to the overall performances in fluorescence and ligand selective sensing of Cu(II)/Fe(III).…”