ArticleGels (Basel, Switzerland)2025
Preparation and Heavy Metal Adsorption Performance of 2-Aminopyridine-Modified Sodium Alginate/Polyacrylic Acid Hydrogel.
Article in Gels (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Natural Polymer-Based Mechanically Strong Hydrogel with Fast Self-Healing for Heavy Metal Ions Removal and Supercapacitor Applications.Polymers · 2026Article
- Multifunctional Bio-Gels in Environmental Remediation: Current Advances and Future Perspectives.Gels (Basel, Switzerland) · 2025Review
- Advances in Preparation and Biomedical Applications of Sodium Alginate-Based Electrospun Nanofibers.Gels (Basel, Switzerland) · 2025Review
- Engineered LDH-alginate composite hydrogel columns for selective heavy metal removal.Frontiers in chemistry · 2025Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
This study utilized the Schiff base reaction as a chemical bonding method to successfully graft 2-aminopyridine onto oxidized sodium alginate, resulting in the formation of modified sodium alginate (OSM). Subsequently, the OSM/polyacrylic acid (OSM/PAA) hydrogel was synthesized via a thermally initiated free radical polymerization process and evaluated as an adsorbent for the removal of heavy metal ions from wastewater. Comprehensive characterization of the prepared samples was performed using FT-IR, SEM, and TGA. The influence of temperature, pH, adsorbent dosage, contact time, and heavy metal ion concentration on the adsorption capacity of the OSM/PAA adsorbent in simulated wastewater was thoroughly investigated. Additionally, a detailed analysis of the adsorption thermodynamics, kinetics, and mechanisms was conducted. Experimental results indicated that at 25 °C, pH 5.0, and an adsorbent dosage of 0.4 g/L, the maximum adsorption capacities of the OSM/PAA hydrogel for Cu(II), Zn(II), and Ni(II) were 367.64 mg/g, 398.4 mg/g, and 409.83 mg/g, respectively. These findings suggest that the adsorption of heavy metal ions by OSM/PAA is a spontaneous, heterogeneous chemical process with significant potential for practical applications in wastewater treatment.
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Registered trials
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