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

Natalia Fijoł; Hani Nasser Abdelhamid; Binsi Pillai; Stephen A. Hall; Nebu Thomas; Aji P. Mathew

doi:10.1039/d1ra05202k

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

Natalia Fijoł, Hani Nasser Abdelhamid, Binsi Pillai, Stephen A. Hall, Nebu Thomas, Aji P. Mathew

Solid Mechanics

Research output: Contribution to journal › Article › peer-review

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, dissolution and precipitation on HAp and surface complexation.

Original language	English
Pages (from-to)	32408-32418
Number of pages	11
Journal	RSC Advances
Volume	11
Issue number	51
DOIs	https://doi.org/10.1039/d1ra05202k
Publication status	Published - 2021 Sept 23

Subject classification (UKÄ)

Materials Chemistry

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10.1039/d1ra05202kLicence: CC BY-NC

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

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, dissolution and precipitation on HAp and surface complexation.",

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doi = "10.1039/d1ra05202k",

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T1 - 3D-printed monolithic biofilters based on a polylactic acid (PLA)-hydroxyapatite (HAp) composite for heavy metal removal from an aqueous medium

AU - Fijoł, Natalia

AU - Abdelhamid, Hani Nasser

AU - Pillai, Binsi

AU - Hall, Stephen A.

AU - Thomas, Nebu

AU - Mathew, Aji P.

PY - 2021/9/23

Y1 - 2021/9/23

N2 - 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.

AB - 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.

U2 - 10.1039/d1ra05202k

DO - 10.1039/d1ra05202k

M3 - Article

AN - SCOPUS:85117418859

SN - 2046-2069

VL - 11

SP - 32408

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JO - RSC Advances

JF - RSC Advances

IS - 51

ER -

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

Abstract

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