Lignin/Chitin Films and Their Adsorption Characteristics for Heavy Metal Ions
| Autor: | Werner Kunz, Cordt Zollfrank, Auriane Freyburger, Yaqing Duan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Aqueous solution
Renewable Energy Sustainability and the Environment General Chemical Engineering Metal ions in aqueous solution 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Adsorption Chitin chemistry Desorption Ionic liquid Environmental Chemistry Lignin Fourier transform infrared spectroscopy 0210 nano-technology Nuclear chemistry |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 6:6965-6973 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.8b00805 |
| Popis: | This study presents the fabrication of novel lignin/chitin films from a solvent system composed of the ionic liquid 1-butyl-3-methylimidazolium acetate and γ-valerolactone as a biosourced cosolvent. Scanning electron microscopy and attentuated total reflectance Fourier transform infrared spectroscopy confirmed the successful preparation of the lignin/chitin films. The application of lignin/chitin film as an adsorbent for Fe(III) and Cu(II) cation uptake from aqueous solutions is discussed. It was observed that the maximum adsorption capacity for Fe(III) was 84 wt % and for Cu(II) was 22 wt % within 48 h. The lignin/chitin films could be regenerated by desorption of the Fe(III) and Cu(II) ions. Up to 12 and 46 wt %, respectively, could be released within 48 h by directly soaking the metal ion loaded film within water at room temperature. The lignin/chitin film can be considered as a stable and recyclable bioadsorbent material with a high adsorption metal ion capacity for water purification. |
| Databáze: | OpenAIRE |
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