Fabrication of cellulose-mediated chitosan adsorbent beads and their surface chemical characterization
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The use of nontoxic, biodegradable and biocompatible biopolymers such as chitosan and cellulose is of considerable importance particularly in uptake of metal ions from the contaminated water systems. Current study was aimed to develop a chitosan-based biosorbent in combination with cellulose to form composite adsorbent beads. The developed composite beads were chemo-physically characterized using advanced analytical techniques of scanning electron microscope, Fourier transform infrared, x-ray diffraction and thermogravimetric analysis. The point of zero charge (PZC) of the developed beads was determined using the methods of salt addition, electrokinetic potential and the mass atitration. The average value of PZC of composite beads was found to be 7.26 using the said methods. On incorporating cellulose into chitosan, the thermal properties of the composite beads were considerably enhanced. The adsorption capacity of chitosan–cellulose beads was found to be 99.8, 79.98 and 99.10 mg/g for Ni(II), Cu(II) and Cr(III), respectively. The adsorption extent showed that the developed composite beads could be employed as adsorbent for wastewater treatment.
KeywordsAdsorbent Beads Biosorption Cellulose Chitosan
The authors recognize the financial Grant (NRPU-3153) of Higher Education Commission, Islamabad, for this study.
- 3.Yadu Nath VK, Raghvendra Kumar M, Aswathy V, Parvathy P, Sunija S, Neelakandan MS, Nitheesha S, Vishnu KA (2017) Chitosan as promising materials for biomedical application: review. Res Dev Mater Sci 2:2576–8840Google Scholar
- 21.Riva GH, García-Estrada J, Vega B, López-Dellamary F, Hérnandez ME, Silva JA (2015) Cellulose-fundamental aspects and current trends. Cellulose-chitosan nanocomposites-evaluation of physical, mechanical and biological properties. InTech, RijekaGoogle Scholar
- 28.Lim B, Poh C, Voon C, Salmah H (2015) Rheological and thermal study of chitosan filled thermoplastic elastomer composites. In: Applied mechanics and materials. Trans Tech Publications, pp 34–38Google Scholar