The use of water hyacinth fibers to develop chitosan-based biocomposites with improved Cu2+ removal efficiency
| Autor: | Siriwit Buajarern, Thitirat Inprasit, Pitchapa Soontornchatchavet, Penwisa Pisitsak, Sarute Ummartyotin, Wisarttra Phamonpon, Apichet Sittinun |
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| Rok vydání: | 2019 |
| Předmět: |
Aqueous solution
Materials science Polymers and Plastics Scanning electron microscope Composite number 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Chitosan chemistry.chemical_compound Cellulose fiber Adsorption chemistry Mechanics of Materials Ultimate tensile strength Materials Chemistry Ceramics and Composites Fiber 0210 nano-technology Nuclear chemistry |
| Zdroj: | Composites Communications. 16:1-4 |
| ISSN: | 2452-2139 |
| Popis: | This work investigated the use of water hyacinth fiber (WHF), extracted from the leaves of Eichhornia crassipes, to produce chitosan-based biocomposites for removal of copper(II) ions from water. The WHF was extracted by shredding, alkaline treatment, neutralization, and filtering. This yielded cellulosic fibers with an average diameter of 11 ± 2 μm. WHF/chitosan composite films were prepared using a solution casting method in which WHF was mixed with chitosan in an acidic aqueous solution and air-dried. X-ray diffraction, scanning electron microscopy, and Fourier-transform infrared spectroscopy were used to characterize the biocomposites obtained. Tensile tests demonstrated a significant improvement in the Young's modulus when the composite was loaded with fiber at 5%. At a 10% loading, the composite film was found to adsorb approximately five times more copper(II) ions from water than the neat chitosan film (Cu2+ adsorption increased from 6.4 ± 2.4 mg/g for the chitosan film to 34.1 ± 2.2 mg/g for the composite containing 10% fibers). The equilibrium adsorption time was 240 min. The study successfully demonstrated the use of this aquatic weed in treatment of water with heavy metal ion-contamination. |
| Databáze: | OpenAIRE |
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