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Chitosan-based nanocomposite beads for drinking water production

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Abstract
Potable drinking water is essential for the good health of humans and it is a critical feedstock in a variety of industries such as food and pharmaceutical industries. For the first time, chitosan-alumina/functionalised multiwalled carbon nanotube (f-MWCNT) nanocomposite beads were developed and investigated for the reduction of various physico-chemical parameters from water samples collected from open wells used for drinking purposes by a rural community in South Africa. The water samples were analysed before and after the reduction of the identified contaminants by the nanocomposite beads. The nanocomposite beads were effective in the removal of nitrate, chromium and other physico-chemical parameters. Although, the water samples contained these contaminants within the WHO and SANS241 limits for no risk, the long-term exposure and accumulation is an environmental and health concern. The reduction of these contaminants was dependent on pH levels. At lower pH, the reduction was significantly higher, up to 99.2% (SPC), 91.0% (DOC), 92.2% (DO), 92.2% (turbidity), 96.5% (nitrate) and 97.7% (chromium). Generally, the chitosan-alumina/f-MWCNT nanocomposite beads offer a promising alternative material for reduction and removal of various physico-chemical parameters for production portable water.
Keywords
Beads, carbon nanotubes, chitosan, nanocomposites, water purification

Citation

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Chicago
Masheane, ML, Lebea Nthunya, SS Sambaza, SP Malinga, EN Nxumalo, BB Mamba, and SD Mhlanga. 2017. “Chitosan-based Nanocomposite Beads for Drinking Water Production.” In IOP Conference Series-Materials Science and Engineering. Vol. 195. Bristol, UK: IOP Publishing.
APA
Masheane, ML, Nthunya, L., Sambaza, S., Malinga, S., Nxumalo, E., Mamba, B., & Mhlanga, S. (2017). Chitosan-based nanocomposite beads for drinking water production. IOP Conference Series-Materials Science and Engineering (Vol. 195). Presented at the 3rd International conference on Structural Nano Composites (NANOSTRUC), Bristol, UK: IOP Publishing.
Vancouver
1.
Masheane M, Nthunya L, Sambaza S, Malinga S, Nxumalo E, Mamba B, et al. Chitosan-based nanocomposite beads for drinking water production. IOP Conference Series-Materials Science and Engineering. Bristol, UK: IOP Publishing; 2017.
MLA
Masheane, ML, Lebea Nthunya, SS Sambaza, et al. “Chitosan-based Nanocomposite Beads for Drinking Water Production.” IOP Conference Series-Materials Science and Engineering. Vol. 195. Bristol, UK: IOP Publishing, 2017. Print.
@inproceedings{8566478,
  abstract     = {Potable drinking water is essential for the good health of humans and it is a critical feedstock in a variety of industries such as food and pharmaceutical industries. For the first time, chitosan-alumina/functionalised multiwalled carbon nanotube (f-MWCNT) nanocomposite beads were developed and investigated for the reduction of various physico-chemical parameters from water samples collected from open wells used for drinking purposes by a rural community in South Africa. The water samples were analysed before and after the reduction of the identified contaminants by the nanocomposite beads. The nanocomposite beads were effective in the removal of nitrate, chromium and other physico-chemical parameters. Although, the water samples contained these contaminants within the WHO and SANS241 limits for no risk, the long-term exposure and accumulation is an environmental and health concern. The reduction of these contaminants was dependent on pH levels. At lower pH, the reduction was significantly higher, up to 99.2\% (SPC), 91.0\% (DOC), 92.2\% (DO), 92.2\% (turbidity), 96.5\% (nitrate) and 97.7\% (chromium). Generally, the chitosan-alumina/f-MWCNT nanocomposite beads offer a promising alternative material for reduction and removal of various physico-chemical parameters for production portable water.},
  articleno    = {012004},
  author       = {Masheane, ML and Nthunya, Lebea and Sambaza, SS and Malinga, SP and Nxumalo, EN and Mamba, BB and Mhlanga, SD},
  booktitle    = {IOP Conference Series-Materials Science and Engineering},
  issn         = {1757-8981},
  language     = {eng},
  location     = {Aberdeen, Scotland, UK},
  pages        = {7},
  publisher    = {IOP Publishing},
  title        = {Chitosan-based nanocomposite beads for drinking water production},
  url          = {http://dx.doi.org/10.1088/1757-899x/195/1/012004},
  volume       = {195},
  year         = {2017},
}

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