Nano-crystalline hydroxyapatite bio-mineral for the treatment of strontium from aqueous solutions

Handley-Sidhu, Stephanie; Renshaw, Joanna C.; Yong, Ping; Kerley, Robert N.; Macaskie, Lynne E.

doi:10.1007/s10529-010-0391-9

Cited by 47 publications

(45 citation statements)

References 17 publications

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“…The value indicated in this study is consistent with those from previous studies where 1.72 and 1.73 were obtained for HAp derived from pig and bovine, respectively . It has also been reported that the molar ratio of calcium to potassium for theoretical HAp can be as high as 1.71 depending on the means of production …”

Section: Resultssupporting

confidence: 85%

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Quality assessment of hydroxyapatite derived from bovine bone wastes

Inyang

Ibitoye

2018

Int J Applied Ceramic Tech

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Musculoskeletal replacement parts are increasingly evolving globally. However, the high cost associated with these parts calls for innovative yet affordable candidate materials. Therefore, this study involves the local production of hydroxyapatite from bovine bone wastes using an unconventional drying technique and its characterization as an alternative material for bone substitutes. The bovine bones used are safe from prions or infectious diseases such as bovine spongiform encephalopathy (BSE) and were further processed using calcination means that excludes possible existing disease. The results obtained from various analyses of the calcined powder confirmed the formation of HAp phase in substantial amount. The preparation was found to be economically viable and production route was time‐ and cost‐ effective.

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Section: Resultssupporting

confidence: 85%

“…23 It has also been reported that the molar ratio of calcium to potassium for theoretical HAp can be as high as 1.71 depending on the means of production. 24…”

Section: Xrf Analysismentioning

confidence: 99%

Quality assessment of hydroxyapatite derived from bovine bone wastes

Inyang

Ibitoye

2018

Int J Applied Ceramic Tech

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“…It has been reported that the molar ratio of Ca/P depends on the method of HAP synthesis and can range from 1.46 to 2.05. 22,23) As Mg 2+ (ionic radius 72 pm) and Sr 2+ (118 pm) can ion-exchange with Ca 2+ (100 pm), the molar ratios in this study can be recalculated accounting for (Ca + Mg + Sr)/P. With (Ca + Mg + Sr)/P the ChemHAP, and FHAPs values approached the theoretical value of 1.67 (Table 1).…”

Section: Sorption Experimentsmentioning

confidence: 73%

Ion Exchange Capacity of Sr<sup>2+</sup> onto Calcined Biological Hydroxyapatite and Implications for Use in Permeable Reactive Barriers

et al. 2012

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With the recent Fukushima incident, there is an urgent need to find cost effective and workable permeable reactive barrier (PRBs) for the remediation/retardation of problematic radionuclides. Catfish bones were calcined at various temperatures (4001100°C) to remove the organic matter (87.1 mg·g ¹1) and to change the structural properties of the hydroxyapatite (HAP). Increasing temperatures increased the HAP crystallinity as indicated by a decrease in lattice strain (0.0098 to 0.00135) and an increase in crystallite sizes (5.0 © 10 ¹8 to 7.7 © 10 ¹8 m). There was also an observed decrease in specific surface areas (98.9 to 0.99 m 2 ·g ¹1 ) and increase in particle sizes (50 to 1000 nm). The sorption densities of Sr 2+ decreased with increasing calcination temperatures, from 0.34 to 0.05 mmol·g ¹1. However, once normalized for surface area, the sorption densities increased from 1.8 to 5.9 mmol·m ¹2 . Overall, this research has important implications for the design of hydroxyapatite PRBs with higher calcination temperatures producing a more reactive material with larger particle sizes for increased permeability. Lower calcination temperatures produced amorphous HAP material, which released more aqueous PO 4 3¹ and resulted in the precipitation of strontium phosphates, ultimately reducing the permeability of PRBs.

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“…Also, addition of nanodimensional HA remarkably inhibits desorption of heavy metals from soils, which increases their geochemical stability in metal contaminated soils [769]. Furthermore, nanodimensional HA was found to hold a great potential to remove cationic heavy metal species from industrial wastewater [770][771][772][773][774]. Finally yet importantly, nanodimensional and nanocrystalline calcium orthophosphates occasionally might possess a catalytic activity [775,776].…”

Section: Non-biomedical Applications Of the Nanodimensional And Nanocmentioning

confidence: 99%

Nanodimensional and Nanocrystalline Calcium Orthophosphates

Dorozhkin¹

2012

AJBE

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Nano-sized particles and crystals play an important role in the formation of calcified tissues of various animals. For example, nano-sized and nanocrystalline calcium orthophosphates in the form of apatites of biological origin represent the basic inorganic building blocks of bones and teeth of mammals. Namely, according the recent developments in biomineralization, tens to hundreds nanodimensional crystals of a biological apatite are self-assembled into these complex structures. This process occurs under a strict control by bioorganic matrixes. Furthermore, both a greater viability and a better proliferation of various types of cells have been detected on smaller crystals of calcium orthophosphates. Thus, the nano-sized and nanocrystalline forms of calcium orthophosphates have a great potential to revolutionize the hard tissue-engineering field, starting from bone repair and augmentation to controlled drug delivery systems. This review reports on current state of the art and recent developments on the subject, starting from synthesis and characterization to biomedical and clinical applications. Furthermore, the review also discusses possible directions for future research and development.

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Nano-crystalline hydroxyapatite bio-mineral for the treatment of strontium from aqueous solutions

Cited by 47 publications

References 17 publications

Quality assessment of hydroxyapatite derived from bovine bone wastes

Quality assessment of hydroxyapatite derived from bovine bone wastes

Ion Exchange Capacity of Sr<sup>2+</sup> onto Calcined Biological Hydroxyapatite and Implications for Use in Permeable Reactive Barriers

Nanodimensional and Nanocrystalline Calcium Orthophosphates

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