dc.contributor.author |
Fernando, M. Shanika |
|
dc.contributor.author |
Wimalasiri, A. K. D. V. K. |
|
dc.contributor.author |
Dziemidowicz, Karolina |
|
dc.contributor.author |
Williams, Gareth R. |
|
dc.contributor.author |
Koswattage, K. R. |
|
dc.contributor.author |
Dissanayake, D. P. |
|
dc.contributor.author |
De Silva, K. M. N. |
|
dc.contributor.author |
De Silva, R. M. |
|
dc.date.accessioned |
2023-10-10T08:48:11Z |
|
dc.date.available |
2023-10-10T08:48:11Z |
|
dc.date.issued |
2021-03-18 |
|
dc.identifier.citation |
Fernando, M. S., Wimalasiri, A. K. D. V. K., Dziemidowicz, K., Williams, G. R., Koswattage, K. R., Dissanayake, D. P., ... & de Silva, R. M. (2021). Biopolymer-based nanohydroxyapatite composites for the removal of fluoride, lead, cadmium, and arsenic from water. ACS omega, 6(12), 8517-8530. |
en_US |
dc.identifier.issn |
8517-8530 |
|
dc.identifier.uri |
http://ir.lib.ruh.ac.lk/xmlui/handle/iruor/15029 |
|
dc.description.abstract |
In this study, hydroxyapatite (HAP) nanocomposites were prepared with chitosan (HAP-CTS), carboxymethyl cellulose (HAP-CMC), alginate (HAP-ALG), and gelatin (HAP-GEL) using a simple wet chemical in situ precipitation method. The synthesized materials were characterized using scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, Brunauer−Emmett−Teller surface area analysis, and thermogravimetric analysis. This revealed the successful synthesis of composites with varied morphologies. The adsorption abilities of the materials toward Pb(II), Cd(II), F−, and As(V) were explored, and HAP-CTS was found to have versatile adsorption properties for all of the ions, across a wide range of concentrations and pH values, and in the presence of common ions found in groundwater. Additionally, X-ray photoelectron spectroscopy and energydispersive X-ray spectroscopy confirmed the affinity of HAP-CTS toward multi-ion mixture containing all four ions. HAP-CTS was hence engineered into a more user-friendly form, which can be used to form filters through its combination with cotton and granular activated carbon. A gravity filtration study indicates that the powder form of HAP-CTS is the best sorbent, with the highest breakthrough capacity of 3000, 3000, 2600, and 2000 mL/g for Pb(II), Cd(II), As(V), and F−, respectively. Hence, we propose that HAP-CTS could be a versatile sorbent material for use in water purification. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
American Chemical Society |
en_US |
dc.title |
Biopolymer-Based Nanohydroxyapatite Composites for the Removal of Fluoride, Lead, Cadmium, and Arsenic from Water |
en_US |
dc.type |
Article |
en_US |