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3D-printed monolithic biofilters based on a polylactic acid (PLA)-hydroxyapatite (HAp) composite for heavy metal removal from an aqueous medium

Fijoł, Natalia ; Abdelhamid, Hani Nasser ; Pillai, Binsi ; Hall, Stephen A. LU ; Thomas, Nebu and Mathew, Aji P. (2021) In RSC Advances 11(51). p.32408-32418
Abstract

High flux, monolithic water purification filters based on polylactic acid (PLA) functionalised with fish scale extracted hydroxyapatite (HAp) were prepared by solvent-assisted blending and thermally induced phase separation (TIPS), followed by twin-screw extrusion into filaments and processed via three-dimensional (3D) printing. The printed filters with consistent pore geometry and channel interconnectivity as well as homogenous distribution of HAp in the PLA matrix showed adsorption capabilities towards heavy metals i.e. cadmium (Cd) and lead (Pb) with maximum adsorption capacity of 112.1 mg gHAp-1 and 360.5 mg gHAp-1 for the metal salt of Pb and Cd, respectively. The adsorption was found to be driven by a combination of ion exchange,... (More)

High flux, monolithic water purification filters based on polylactic acid (PLA) functionalised with fish scale extracted hydroxyapatite (HAp) were prepared by solvent-assisted blending and thermally induced phase separation (TIPS), followed by twin-screw extrusion into filaments and processed via three-dimensional (3D) printing. The printed filters with consistent pore geometry and channel interconnectivity as well as homogenous distribution of HAp in the PLA matrix showed adsorption capabilities towards heavy metals i.e. cadmium (Cd) and lead (Pb) with maximum adsorption capacity of 112.1 mg gHAp-1 and 360.5 mg gHAp-1 for the metal salt of Pb and Cd, respectively. The adsorption was found to be driven by a combination of ion exchange, dissolution and precipitation on HAp and surface complexation.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
RSC Advances
volume
11
issue
51
pages
11 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:85117418859
ISSN
2046-2069
DOI
10.1039/d1ra05202k
language
English
LU publication?
yes
additional info
Publisher Copyright: © The Royal Society of Chemistry.
id
0963ce88-ac49-438f-b561-66b4764d20d7
date added to LUP
2024-10-16 09:53:27
date last changed
2025-04-04 14:02:08
@article{0963ce88-ac49-438f-b561-66b4764d20d7,
  abstract     = {{<p>High flux, monolithic water purification filters based on polylactic acid (PLA) functionalised with fish scale extracted hydroxyapatite (HAp) were prepared by solvent-assisted blending and thermally induced phase separation (TIPS), followed by twin-screw extrusion into filaments and processed via three-dimensional (3D) printing. The printed filters with consistent pore geometry and channel interconnectivity as well as homogenous distribution of HAp in the PLA matrix showed adsorption capabilities towards heavy metals i.e. cadmium (Cd) and lead (Pb) with maximum adsorption capacity of 112.1 mg gHAp-1 and 360.5 mg gHAp-1 for the metal salt of Pb and Cd, respectively. The adsorption was found to be driven by a combination of ion exchange, dissolution and precipitation on HAp and surface complexation.</p>}},
  author       = {{Fijoł, Natalia and Abdelhamid, Hani Nasser and Pillai, Binsi and Hall, Stephen A. and Thomas, Nebu and Mathew, Aji P.}},
  issn         = {{2046-2069}},
  language     = {{eng}},
  month        = {{09}},
  number       = {{51}},
  pages        = {{32408--32418}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{RSC Advances}},
  title        = {{3D-printed monolithic biofilters based on a polylactic acid (PLA)-hydroxyapatite (HAp) composite for heavy metal removal from an aqueous medium}},
  url          = {{http://dx.doi.org/10.1039/d1ra05202k}},
  doi          = {{10.1039/d1ra05202k}},
  volume       = {{11}},
  year         = {{2021}},
}