ArticleMolecules (Basel, Switzerland)2023
Effective Removal of Fe (III) from Strongly Acidic Wastewater by Pyridine-Modified Chitosan: Synthesis, Efficiency, and Mechanism.
Article in Molecules (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed.
- Activation Chemistry-Driven Enhancement ofACS omega · 2026Article
- Integration of Nickel Adsorption Procedures into the Hydrometallurgical Processing of Laterite Ore: Comparative Performance of Two Chelating Ion-Exchange Resins with Insight into the Adsorption Mechanism.Materials (Basel, Switzerland) · 2026Article
- High-Specific-Surface-Area Hollow Carbon Spheres for Efficient Chromium Ion Adsorption in Acidic Wastewater.Nanomaterials (Basel, Switzerland) · 2026Article
- Solid phase extraction of FeScientific reports · 2026Article
- Design and evaluation of a novel pyridine-thiazole hybrid adsorbent as high-capacity adsorbent for methylene blue removal from water.Scientific reports · 2025Article
- Wastewater Treatments Based on Adsorption, Catalysis, Biodegradation, and Beyond.Molecules (Basel, Switzerland) · 2024Article
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9 authors.
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Abstract
A novel pyridine-modified chitosan (PYCS) adsorbent was prepared in a multistep procedure including the successive grafting of 2-(chloromethyl) pyridine hydrochloride and crosslinking with glutaraldehyde. Then, the as-prepared materials were used as adsorbents for the removal of metal ions from acidic wastewater. Batch adsorption experiments were carried out to study the impact of various factors such as solution pH value, contact time, temperature, and Fe (III) concentration. The results showed that the absorbent exhibited a high capacity of Fe (III) and the maximum adsorption capacity was up to 66.20 mg/g under optimal experimental conditions (the adsorption time = 12 h, pH = 2.5, and T = 303 K). Adsorption kinetics and isotherm data were accurately described by the pseudo-second-order kinetic model and Sips model, respectively. Thermodynamic studies confirmed that the adsorption was a spontaneous endothermic process. Moreover, the adsorption mechanism was investigated using Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The results revealed the pyridine group forms a stable chelate with iron (III) ions. Therefore, this acid-resistant adsorbent exhibited excellent adsorption performance for heavy metal ions from acidic wastewater compared to the conventional adsorbents, helping realize direct decontamination and secondary utilization.
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