Efficient immobilization of ionic corrosion products by a silica-hydroxyapatite composite <i>via</i> a cold sintering route

Iqbal, Sajid; Hassan, Muhmood ul; Ryu, Ho Jin; Yun, Jong-Il

doi:10.1039/c9ra04280f

Cited by 12 publications

(3 citation statements)

References 55 publications

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Section: Introductionmentioning

confidence: 99%

“…28 Among inorganic adsorbents, apatite minerals with special crystal characteristics are considered as most effective materials for the treatment of wastewater containing various metal ions and have the capability of transforming spent adsorbents into solid bricks without an external binding matrix. [34][35][36] Calcium hydroxyapatite (HA: Ca 10 (PO 4 ) 6 (OH) 2 ) is a robust apatite material having promising thermal, radiation and chemical stability. It has shown excellent removal efficiency for many metals and non-metals (Cd(II), Cr(III, VI), Cu(II), Co(II), Fe(II), Ni(II), Pb(II), Sr(II), Zn(II) F and I, etc.)…”

Section: Introductionmentioning

confidence: 99%

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Development of titanium doped hydroxyapatite for efficient removal of radioactive strontium from contaminated water

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of titanium doped hydroxyapatite for efficient removal of radioactive strontium from contaminated water

et al. 2023

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“…The situation can get worse if insufficient external pressure is applied. The solvent (water) worked well, but the applied force (100 MPa) was insufficient to close the pores [23].…”

Section: Sem Results Of Dense Hamentioning

confidence: 99%

Cold sintering process of hydroxyapatite derived from natural bone and co-precipitation method: a comparative study

Abbas,

Smeig,

Abdul Ameer

2024

ETJ

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 A novel cold sintering process produced highly dense hydroxyapatite (HA) samples.  Nano-HA was prepared via two routes: bovine bone (HA 1 ) and chemical precipitation (HA 2 ).  The difference in cold sintering between the HA 1 and HA 2 powders is explained.  Cold sintering yielded high density, purity, and stability HA without thermal decomposition.  Structural, morphological, mechanical and physical properties of the compact samples were studiedThis study uses a novel sintering technique at very low temperatures (below 300°C) named the Cold Sintering Process to produce highly dense Hydroxyapatite (HA) samples. Nano hydroxyapatite was prepared using two different methods: Synthesis by chemical precipitation method (HA 1 ) and natural source from Boven bone (HA 2 ). The samples are characterized using scanning electron microscope (SEM), X-ray energy dispersive spectrometry (EDS), X-ray diffractogram (XRD), transition electron microscope (TEM), Fourier transform infrared spectrometry (FTIR) and Nuclear magnetic resonance spectroscopy (NMR). Also, physical and mechanical properties measurements were detected, including density and hardness. The results indicated that cold sintering could result in Hydroxyapatite with high densification, high purity, and high stability without thermal decomposition compared with traditional sintering. The relative density and hardness for HA 1 are 99% and 502HV, respectively. The relative density and hardness for HA 2 are 69% and 350HV, respectively. It can be observed that the HA 1 sample has higher densification than HA 2 due to the presence of organic matter in natural Hydroxyapatite HA 2 . This organic material will be removed during the cold sintering process, leaving pores that lead to low densification of HA 2 samples. It can be concluded that the synthesis hydroxyapatite (HA 1 ) can be easily sintered by a cold sintering process compared with natural one(HA 2 ).

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Recent progress of cold sintering process on functional ceramic materials

Li,

Zhao,

Kang

et al. 2023

J Mater Sci: Mater Electron

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Efficient immobilization of ionic corrosion products by a silica-hydroxyapatite composite via a cold sintering route

Abstract: We have successfully demonstrated a new method of radioactive waste immobilization by hosting a waste-bearing form in another waste matrix.

Cited by 12 publications

References 55 publications

Development of titanium doped hydroxyapatite for efficient removal of radioactive strontium from contaminated water

Development of titanium doped hydroxyapatite for efficient removal of radioactive strontium from contaminated water

Cold sintering process of hydroxyapatite derived from natural bone and co-precipitation method: a comparative study

Recent progress of cold sintering process on functional ceramic materials

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