Development of tannin-immobilized cellulose fiber extracted from coconut husk and the application as a biosorbent to remove heavy metal ions
| Autor: | Kriangsak Songsrirote, Kotchaporn Taksitta, Suchao Donpudsa, Nuanlaor Ratanawimarnwong, Prapasiri Sujarit |
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| Rok vydání: | 2020 |
| Předmět: |
Materials Science (miscellaneous)
Metal ions in aqueous solution Langmuir adsorption model 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law 021001 nanoscience & nanotechnology 01 natural sciences Pollution Husk chemistry.chemical_compound Cellulose fiber symbols.namesake Adsorption chemistry symbols Molecule Epichlorohydrin Cellulose 0210 nano-technology Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Nuclear chemistry |
| Zdroj: | Environmental Nanotechnology, Monitoring & Management. 14:100389 |
| ISSN: | 2215-1532 |
| Popis: | Cellulose fibers from coconut husk (CH) were modified with tannin and applied as a biosorbent for the removal of heavy metal ions including Cu(II), Cd(II), and Pb(II) in wastewater. To improve the ion adsorption efficiency of the cellulose fiber from CH, epichlorohydrin was used as a crosslinking agent to graft tannin molecules onto cellulose to produce tannin-immobilized cellulose fiber (TCF). Under an optimum condition at pH 5.0 and 30 min of contact time, the adsorption capacity was 38.02 mg/g, 59.52 mg/g, and 72.99 mg/g for Pb(II), Cd(II), and Cu(II) ions, respectively. Adsorption behaviors of the metal ions could be described using the Langmuir isotherm model. The desorbing solution containing 0.1 M EDTA was chosen to regenerate used TCF. Moreover, chemical characterizations of the TCF using Fourier transform infrared spectrometry showed that TCF possessed combined properties of both CH and tannin. The developed TCF is an inexpensive and efficient alternative that could be further developed as a platform for wastewater management. |
| Databáze: | OpenAIRE |
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