Natural hydroxyapatite from fishbone waste for the rapid adsorption of heavy metals of aqueous effluent

Hernández‐Cocoletzi, H.; Salinas, Rafael A.; Águila-Almanza, E.; Rosas, E. Rubio; Chai, Wai Siong; Chew, Kit Wayne; Mariscal-Hernández, C.; Show, Pau Loke

doi:10.1016/j.eti.2020.101109

Cited by 62 publications

(13 citation statements)

References 14 publications

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“…Furthermore, no additional peaks were found in the diffraction pattern of the b-HdA, indicating that hydroxyapatite was the only phase and PVB completely decomposed into volatile products at 550 • C [39]. Furthermore, a slightly higher intensity of the diffraction peaks was obtained for b-HdA compared to that of p-HdA, which might have resulted from the fact that the sintering process improved the crystallinity of the material [40]. Figure 1d shows that the pH pzc of the b-HdA was 7.9, which was similar to the precursor-HdA powder and other previous studies [38,41,42].…”

Section: Physico-chemical Properties Of the Prepared B-hdamentioning

confidence: 95%

“…Furthermore, the selective order in the adsorption of these radionuclides on the b-HdA was U(VI) > Co(II) > Ni(II) > Sr(II) > Cs(I), as illustrated in Figure 6a,b. Research has shown that the absorption preference is affected by various characteristics of the adsorbates, such as ionic valence, ionic radius, hydration radius, electronegativity, hydration enthalpy, and charge density [6,40,44]. Generally, the adsorptive sites are preferentially occupied by ions with higher electronegativity, bigger ionic radius and valence, and smaller hydration radius [12].…”

Section: Comparability and Selectivity Of The B-hda In A Multi-ionic mentioning

confidence: 99%

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Novel Hydroxyapatite Beads for the Adsorption of Radionuclides from Decommissioned Nuclear Power Plant Sites

et al. 2021

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Although a powdered form of hydroxyapatite (p-HdA) has been studied for the adsorption of heavy metals that contaminate the restoration sites of decommissioned nuclear power plants, most of the studies are limited in the laboratory due to the head loss and post-separation in practical applications. Herein, we fabricated a porous bead form of HdA (b-HdA) as a novel adsorbent for removing radionuclides from aqueous environments via a facile synthesis by mixing the p-HdA precursor and polyvinyl butyral (PVB) as a binder and added a sintering process for the final production of a porous structure. The spherical b-HdA with an approximate diameter of 2.0 mm was successfully fabricated. The effectiveness of the b-HdA at removing Co(II) was investigated via the adsorption equilibrium at various experimental temperatures. The b-HdA exhibited the adsorption capacity for Co(II) ions with a maximum of 7.73 and 11.35 mg/g at 293 K and 313 K, respectively. The experimental kinetic data were well described using a pseudo-second-order kinetic model, and the adsorption mechanisms of Co(II) onto the b-HdA were revealed to be a chemisorption process with intraparticle diffusion being the rate-limiting step. In addition, the competitive adsorption onto the b-HdA with the order of U(VI) > Co(II) > Ni(II) > Sr(II) > Cs(I) was also observed in the multi-radionuclides system. Considering the advantages of the size, applicability to the continuous-flow column, and the easy separation from treated water, the b-HdA can be an excellent absorbent with high potential for practical applications for removing radionuclides.

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Section: Physico-chemical Properties Of the Prepared B-hdamentioning

confidence: 95%

Section: Comparability and Selectivity Of The B-hda In A Multi-ionic mentioning

confidence: 99%

Novel Hydroxyapatite Beads for the Adsorption of Radionuclides from Decommissioned Nuclear Power Plant Sites

et al. 2021

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“…The Freundlich isotherm assumes that the surface of the adsorbent will bind to the Chromium ions with several layers (multilayer) with van dew walls bonds. On other hand, the Langmuir isotherm assumes that the adsorption of Chromium ions will bind only 1 layer (monolayer) with strong chemical interactions [18]. The Freundlich isotherm describes the Chromium ions and the adsorbent surface was only weakly bonded, so the composite used was suitable for long-term use because it can be regenerated.…”

Section: Determination Of Isotherm Adsorptionmentioning

confidence: 99%

The adsorption potential of andisol/zeolite/fly ash as adsorbents on chromium hexavalent removal

Mustofa

Inayati

Pranoto

2022

J. Phys.: Conf. Ser.

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The study of Andisol/Zeolite/Fly ash (AZF) as adsorbents has been investigated. This research was aimed to study the characteristics of AZF as an adsorbent for Chromium metal ion removal. Andisol soil and zeolite were activated using NaOH solutions. All materials were characterized by Fourier Transform Infrared (FTIR), Surface Area Analyzer (SAA), and Ultraviolet-Visible Spectrometry (UV-Vis). Based on the results, the optimum composition of AZF was obtained at the ratio of andisol/zeolite/fly ash of 2.4/2.4/0.2 (w/w%), with a decrease on Chromium(VI) concentration above 92%. The optimum condition occurred at a pH of 3 and 150 minutes of contact time. The isotherm study showed that Freundlich isotherm was more dominant rather than Langmuir isotherm.

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“…All of them come from fish industries, as they produce large amounts of by-products every year; therefore, the CaP production from fish by-products for different applications is widely studied because it has great relevance in terms of the benefit for both the environment and the economy of the industrial sector [65,[216][217][218]. An example is reported by Hernandez-Cocoletzi et al that developed a system based on HA achieved from fishbone waste in order to absorb heavy metals from aqueous effluents [219]. Granito et al exploited the high potential of this kind of HA from natural sources in biomedicine application due to the intrinsic biocompatibility of the material [220].…”

Section: Natural Calcium Phosphates As Sunscreensmentioning

confidence: 99%

The Use of Calcium Phosphates in Cosmetics, State of the Art and Future Perspectives

2021

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Calcium phosphates (CaPs) belong to a class of biomimetic materials widely employed for medical applications thanks to their excellent properties, such as biodegradability, biocompatibility and osteoinductivity. The recent trend in the cosmetics field of substituting potentially hazardous materials with natural, safe, and sustainable ingredients for the health of consumers and for the environment, as well as the progress in the materials science of academics and chemical industries, has opened new perspectives in the use of CaPs in this field. While several reviews have been focused on the applications of CaP-based materials in medicine, this is the first attempt to catalogue the properties and use of CaPs in cosmetics. In this review a brief introduction on the chemical and physical characteristics of the main CaP phases is given, followed by an up-to-date report of their use in cosmetics through a large literature survey of research papers and patents. The application of CaPs as agents in oral care, skin care, hair care, and odor control has been selected and extensively discussed, highlighting the correlation between the chemical, physical and toxicological properties of the materials with their final applications. Finally, perspectives on the main challenges that should be addressed by the scientific community and cosmetics companies to widen the application of CaPs in cosmetics are given.

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Natural hydroxyapatite from fishbone waste for the rapid adsorption of heavy metals of aqueous effluent

Cited by 62 publications

References 14 publications

Novel Hydroxyapatite Beads for the Adsorption of Radionuclides from Decommissioned Nuclear Power Plant Sites

Novel Hydroxyapatite Beads for the Adsorption of Radionuclides from Decommissioned Nuclear Power Plant Sites

The adsorption potential of andisol/zeolite/fly ash as adsorbents on chromium hexavalent removal

The Use of Calcium Phosphates in Cosmetics, State of the Art and Future Perspectives

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