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<p>Organic pollutants are widespread in ecosystems, especially in aqueous solutions, and create a major risk to humans. Through phenolic compounds, wastewater from a range of sectors e.g., polymer manufacturing units, conventional plywood, paper mills, metallurgical coke manufacturing operations, etc., can contaminate the environment. Phenolic chemicals are hazardous substances, and some are either proven or suspected carcinogens. In order to treat wastewater contaminated with phenol, a novel composite material called CA-HP-β-CD-FeNP was created in this work by cross-linking citric acid with 2-Hydroxypropyle β-Cyclodextrin and integrating iron nanoparticles. The structural and morphological features of the CA-HP-β-CD-FeNP were studied through the X-ray diffraction (XRD) technique, Fourier transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM)). The Langmuir isotherm effectively explained the extraction of phenol by CA-HP-β-CD-FeNP. Maximum elimination (95.82%) of phenol occurred under the appropriate conditions of pH, CA-HP-β-CD-FeNP dose, initial phenol concentration, and contact time. Ethanol and sodium hydroxide proved to be effective in regenerating phenol loaded CA-HP-β-CD-FeNP suggesting their potential for use as recyclable sorbents. The adsorption mechanism was found to better fit the pseudo-second-order kinetic model. Thermodynamic investigation of phenol adsorption on CA-HP-β-CD-FeNP revealed that the adsorption process is spontaneous and exothermic. CA-HP-β-CD-FeNP was found as an effective adsorbent for phenol removal with great selectivity and numerous reuse cycles.</p>

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Magnetic nanoparticles incorporated citric acid cross-linked β - Cyclodextrin polymer as an adsorbent for phenol removal: A structure-property relationship study”

  • 期刊论文

  • 发表日期：

    2026年8月3日

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  • Monika Meshram,
  • Vijita Diwan

摘要

Organic pollutants are widespread in ecosystems, especially in aqueous solutions, and create a major risk to humans. Through phenolic compounds, wastewater from a range of sectors e.g., polymer manufacturing units, conventional plywood, paper mills, metallurgical coke manufacturing operations, etc., can contaminate the environment. Phenolic chemicals are hazardous substances, and some are either proven or suspected carcinogens. In order to treat wastewater contaminated with phenol, a novel composite material called CA-HP-β-CD-FeNP was created in this work by cross-linking citric acid with 2-Hydroxypropyle β-Cyclodextrin and integrating iron nanoparticles. The structural and morphological features of the CA-HP-β-CD-FeNP were studied through the X-ray diffraction (XRD) technique, Fourier transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM)). The Langmuir isotherm effectively explained the extraction of phenol by CA-HP-β-CD-FeNP. Maximum elimination (95.82%) of phenol occurred under the appropriate conditions of pH, CA-HP-β-CD-FeNP dose, initial phenol concentration, and contact time. Ethanol and sodium hydroxide proved to be effective in regenerating phenol loaded CA-HP-β-CD-FeNP suggesting their potential for use as recyclable sorbents. The adsorption mechanism was found to better fit the pseudo-second-order kinetic model. Thermodynamic investigation of phenol adsorption on CA-HP-β-CD-FeNP revealed that the adsorption process is spontaneous and exothermic. CA-HP-β-CD-FeNP was found as an effective adsorbent for phenol removal with great selectivity and numerous reuse cycles.