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Fabrication of Porous Hydroxyapatite Granules as an Effective Adsorbent for the Removal of Aqueous Pb(II) Ions
Joint Authors
Dinh, Thi Mai Thanh
Tran, Lam D.
Le, Hai V.
Nguyen, Thom T.
Pham, Nam T.
Nguyen, Phuong T.
Le, Duyen Thi
Le, Thao Phuong Thi
Do, Hai Thi
Vo, Hanh Thi
Cao, Hong Thi
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-21
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Porous hydroxyapatite (HAp) granules have been successfully fabricated from a HAp powder precursor and polyvinyl alcohol (PVA) additive by a simple sintering process.
The composition and microstructures of the HAp were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM) equipped with an energy dispersive X-ray (EDX) spectrometer.
The effects of sintering temperature and PVA/HAp mass ratios on color, water stability, morphology, and chemical composition of HAp are discussed.
Optimum conditions for the fabrication of HAp granules were found to be a PVA/HAp mass ratio of 3/20 and a sintering temperature of 600°C for 4 h.
Accordingly, the obtained HAp is white in color, is in the granular form with a size of about 2 × 10 mm, and has a specific surface area of 70.6 m2/g.
The adsorption of Pb2+ onto the as-prepared HAp granules was carried out in aqueous solution by varying the pH, the adsorbent dose, the initial concentration of Pb2+, and the contact time.
The results of adsorption stoichiometry of Pb2+ on the HAp granule adsorbent were fitted to the Langmuir adsorption isotherm model (R2 = 0.99).
The adsorption capacity and removal efficiency of the HAp granule adsorbent for Pb2+ under optimal conditions were found to be 7.99 mg/g and 95.92%, respectively.
The adsorption process obeyed a pseudo-second-order kinetic model with R2∼1.
The porous HAp granules studied in this work showed potential for the removal of Pb2+ from industrial wastewater.
American Psychological Association (APA)
Le, Duyen Thi& Le, Thao Phuong Thi& Do, Hai Thi& Vo, Hanh Thi& Pham, Nam T.& Nguyen, Thom T.…[et al.]. 2019. Fabrication of Porous Hydroxyapatite Granules as an Effective Adsorbent for the Removal of Aqueous Pb(II) Ions. Journal of Chemistry،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1171897
Modern Language Association (MLA)
Le, Duyen Thi…[et al.]. Fabrication of Porous Hydroxyapatite Granules as an Effective Adsorbent for the Removal of Aqueous Pb(II) Ions. Journal of Chemistry No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1171897
American Medical Association (AMA)
Le, Duyen Thi& Le, Thao Phuong Thi& Do, Hai Thi& Vo, Hanh Thi& Pham, Nam T.& Nguyen, Thom T.…[et al.]. Fabrication of Porous Hydroxyapatite Granules as an Effective Adsorbent for the Removal of Aqueous Pb(II) Ions. Journal of Chemistry. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1171897
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1171897