Hydroxyapatite and dittmarite precipitation from algae hydrolysate

Teymouri, Ali; Stuart, Ben J.; Kumar, Sandeep

doi:10.1016/j.algal.2017.11.030

Cited by 27 publications

(10 citation statements)

References 83 publications

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“…recovered the phosphorus present in Scenedesmus sp. to produce HAp and dittmarite via two different pathways [73]. The HAp was recovered using the hydrothermal mineralisation process.…”

Section: Main Textmentioning

confidence: 99%

“…the presence of magnesium will inhibit apatite formation and form whitlockite [79]. Due to the presence of magnesium in the central atom of chlorophyll in the algae, and the pH used during the reaction of the algal hydrolysate, all conditions favour the formation of whitlockite [73]. In term of crystallinity, the XRD pattern shows that the use of calcination or thermal processes will increase the crystallinity of the HAp while the chemical precipitation method results in low crystallinity HAp.…”

Section: Main Textmentioning

confidence: 99%

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Syntheses of hydroxyapatite from natural sources

Pu'ad

Koshy

Abdullah

et al. 2019

Heliyon

247

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Waste materials from natural sources are important resources for extraction and recovery of valuable compounds. Transformation of these waste materials into valuable materials requires specific techniques and approaches. Hydroxyapatite (HAp) is a biomaterial that can be extracted from natural wastes. HAp has been widely used in biomedical applications owing to its excellent bioactivity, high biocompatibility, and excellent osteoconduction characteristics. Thus, HAp is gaining prominence for applications as orthopaedic implants and dental materials. This review summarizes some of the recent methods for extraction of HAp from natural sources including mammalian, aquatic or marine sources, shell sources, plants and algae, and from mineral sources. The extraction methods used to obtain hydroxyapatite are also described. The effect of extraction process and natural waste source on the critical properties of the HAp such as Ca/P ratio, crystallinity and phase assemblage, particle sizes, and morphology are discussed herein.

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“…recovered the phosphorus present in Scenedesmus sp. to produce HAp and dittmarite via two different pathways [73]. The HAp was recovered using the hydrothermal mineralisation process.…”

Section: Main Textmentioning

confidence: 99%

Section: Main Textmentioning

confidence: 99%

Syntheses of hydroxyapatite from natural sources

Pu'ad

Koshy

Abdullah

et al. 2019

Heliyon

247

View full text Add to dashboard Cite

show abstract

“…Fourier transform infrared spectroscopy (FTIR) was used to characterize the film at a wave number of 4000-500 cm -1 by using (FTIR-TENSOR-27, Bruker, Japan made) [12][13][14].…”

Section: Fourier Transforms Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Electrophoretic Deposition Used to Prepare and Analyze the Microstructure of Chitosan/Hydroxyapatite Nano-Composites

Ahmed¹,

Jaber²,

Salih³

2021

ETJ

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 Pulsed EPD improved the coating layer by degreasing the bubbles and cracks.  Using an FTIR test, major chemical bonds were found to the HAP and CS.  Little frequency in the PEPD causes degreasing distortion in the coating layer.This research studies the coating layer properties from chitosan and nanohydroxyapatite made by pulsed electrophoretic deposition (PEPD) for biomedical applications. The 316L SS alloys were coated with hydroxyapatite in different solutions in 100 mL of suspension at a 30 V continuous voltage. To characterize the deposited coatings, X-ray diffraction spectroscopy (XRD), Fourier transform infrared (FTIR), Contact Angle, scanning electron microscopy (SEM), energy dispersive x-ray analysis (EDX),Yield deposition and Optical microscopy structural (OM) was used for coating layer, in addition to being calculated Zeta potential for suspensions. The aim of this study is to show that using the Pulsed EPD method at room temperature, a simple and low-cost solution for in situ synthesis of Nano -HAp within a chitosan matrix for biomedical applications can be demonstrated.

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“…Using waste resources as the precursors during the chemical synthesis is thus a modern and beneficial approach. According to the recent literature, there are a few effective methods of the hydroxyapatite synthesis from wastes such as various animal bones (e.g., bovine bones [17], fish scales [18], algae [19], corals [20], shells [21], or eggshells [22,23]). The materials obtained in this way are composed mostly of HA [17,18,21,22]; however, the products containing considerable amounts of a second phase, in most cases β-TCP, were also described [10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Calcium Phosphate Materials Derived from Eggshells from Different Poultry with and without the Eggshell Membrane

et al. 2022

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Calcium phosphate materials such as hydroxyapatite (HA) or tricalcium phosphate (β-TCP) are highly attractive due to their multitude of applications in bone replacement as well as their environmental and ecological credentials. In this research, quail, hen, duck, and pigeon eggshells were used as a calcium source to obtain calcium phosphate materials via the environmentally friendly wet synthesis. Using the eggshells with the organic membrane, the biphasic calcium phosphate materials composed mainly of HA were obtained. The second mineral phase was β-TCP in the case of using quail, hen, and pigeon eggshells and octacalcium phosphate (OCP) in the case of duck eggshells. The HA content in the obtained materials depended on the amount of membrane in the eggshells and decreased in the order of pigeon, duck, hen, and quail eggshells. The eggshell membrane removal from the eggshells caused the reduced content of HA and the presence of the more soluble β-TCP or OCP phase in the obtained materials. The calcium ions release profile in the PBS buffer indicates the potential biomedical application of these materials.

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Hydroxyapatite and dittmarite precipitation from algae hydrolysate

Cited by 27 publications

References 83 publications

Syntheses of hydroxyapatite from natural sources

Syntheses of hydroxyapatite from natural sources

Electrophoretic Deposition Used to Prepare and Analyze the Microstructure of Chitosan/Hydroxyapatite Nano-Composites

Synthesis and Characterization of Calcium Phosphate Materials Derived from Eggshells from Different Poultry with and without the Eggshell Membrane

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