Synthesis of rod-like hydroxyapatite with high surface area and pore volume from eggshells for effective adsorption of aqueous Pb(II)
Source abstract
Abstract
Abstract We report the synthesis of rod-like hydroxyapatite nanopowder from waste eggshells (decomposed to CaO) and phosphoric acid at room temperature without pH control. The procedure involves the use of a syringe pump to control the addition rate of the phosphoric acid in order to maintain a stable pH. Results revealed that pure, rod-like, and nano-size hydroxyapatite particles were produced at various addition rates. Moreover, the sample obtained from 200 ml/h addition rate exhibited large surface area (160.1 m2/g) and pore volume (1.0 cm3/g). Consequently, the prepared hydroxyapatite and that previously produced as adsorbents showed fast adsorption rates (10 min) as well as very high maximum adsorption (qm = 994.5 mg/g and 1000.5 mg/g, respectively) for Pb2+ in aqueous solution. Furthermore, the adsorption process revealed a pseudo-second-order reaction model and the equilibrium adsorption could be described by Langmuir model.
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Research context
OpenAlex topics: Bone Tissue Engineering Materials · Adsorption and biosorption for pollutant removal · Graphene and Nanomaterials Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (47)
Show source-provided references
1. Bioceramics: from concept to clinic10.1111/j.1151-2916.1991.tb07132.x ↗
2. Medical grade hydroxyapatite: state of the art
3. Material properties of hydroxylapatite ceramics
4. Removal of aqueous lead ions by hydroxyapatites: equilibria and kinetic processes10.1016/j.jhazmat.2006.02.039 ↗
5. Cadmium fixation by synthetic hydroxyapatite in aqueous solution: thermal behaviour10.1016/j.jhazmat.2006.02.040 ↗
6. Immobilization of lead and cadmium from aqueous solution and contaminated sediment using nano-hydroxyapatite10.1016/j.envpol.2009.08.024 ↗
7. Materials fundamentals and clinical performance of plasma sprayed hydroxyapatite coatings: a review10.1002/jbm.1056 ↗
8. Plasma-sprayed bovine hydroxyapatite coatings10.1016/j.matlet.2004.03.033 ↗
9. Conversion of bulk seashells to biocompatible hydroxyapatite for bone implants10.1016/j.actbio.2007.06.003 ↗
10. Synthesis of nano-crystalline hydroxyapatite and ammonium sulfate from phosphogypsum waste10.1016/j.materresbull.2012.11.067 ↗
11. Synthesis of biomimetic Ca-hydroxyapatite powders at 37°C in synthetic body fluids10.1016/S0142-9612(00)00019-3 ↗
12. Woolsey M., Beckman C., Zhang J., Peoples Republic of China Poultry and Products, USDA global agricultural information network, Annual Report, CH, (2011), 11043.
13. Removal of lead ions by hydroxyapatite prepared from the egg shell10.1021/je901070e ↗
14. Eggshell calcium in the prevention and treatment of osteoporosis
15. Synthesis of calcium-deficient hydroxyapatite in the presence of amphiphilic triblock copolymer10.1016/j.matlet.2011.08.050 ↗
16. Novel chemical conversion of eggshell to hydroxyapatite powder
17. Temperature effect on calcium phosphate synthesized from chicken eggshells and ammonium phosphate10.3923/jas.2010.3337.3342 ↗
18. Conversion of waste eggshells to mesoporous hydroxyapatite nanoparticles with high surface area10.1016/j.matlet.2013.08.014 ↗
19. Modeling of the dissolution of calcium hydroxide in the preparation of hydroxyapatite by neutralization10.1016/S0009-2509(00)00205-0 ↗
20. Block-copolymer-assisted synthesis of hydroxyapatite nanoparticles with high surface area and uniform size10.1016/S1005-0302(11)60017-0 ↗
21. Rapid formation of hydroxyapatite nanostructures by microwave irradiation10.1016/j.cplett.2004.08.094 ↗
22. Synthesis of nano-crystalline hydroxyapatite from dead snail shells for biological implantation
23. Synthesis of high purity hydroxyapatite nanopowder via sol–gel combustion process10.1007/s10856-008-3685-x ↗
24. Hydroxyapatite/ovalbumin composite particles as model protein carriers for bone tissue engineering: I. Synthesis and characterization10.1016/j.msec.2012.01.020 ↗
25. Computer simulations of the adsorption of citric acid at hydroxyapatite surfaces10.1016/j.jcrysgro.2006.05.077 ↗
26. Thin films of SiO2 and hydroxyapatite on titanium deposited by spray pyrolysis
27. Development of calcium phosphate based apatite from hen’s eggshell10.1007/BF02704229 ↗
28. A novel route for synthesis of nanocrystalline hydroxyapatite from eggshell waste10.1007/s10856-007-3069-7 ↗
29. Nanosized hydroxyapatite powders derived from coprecipitation process10.1023/A:1014355103125 ↗
30. Synthesis of mesoporous hydoxyapatite using a modified hard-templating route10.1016/j.materresbull.2009.04.014 ↗
31. Hydroxyapatite micro- and nanoparticles: nucleation and growth mechanisms in the presence of citrate species10.1016/j.jcis.2007.10.008 ↗
32. Preparation of high specific surface area hydroxyapatite for environmental applications10.1007/s10853-006-1160-y ↗
33. Surface and physicochemical characterization of phosphates vivianite Fe2(PO4)3 and hydroxyapatite, Ca5(PO4)3OH
34. Nano-crystallinite hydroxyapatite synthesized by neutralization with the assist of citric acid10.1016/j.matlet.2007.07.013 ↗
35. Removal of lead from aqueous solutions by natural clinoptilolite: equilibrium and kinetic studies10.1016/j.seppur.2003.12.001 ↗
36. Factors influencing the removal of divalent cations by hydroxyapatite10.1016/j.jhazmat.2007.07.056 ↗
37. Aqueous Pb sorption by synthetic and natural apatite: kinetics, equilibrium, and thermodynamic studies10.1016/j.cej.2010.03.061 ↗
38. Adsorption of Cd(II) and Cu(II) from aqueous solution by carbonate hydroxylapatite derived from eggshell waste10.1016/j.jhazmat.2007.01.048 ↗
39. Removal of lead from aqueous solution by hydroxyapatite/magnetite composite adsorbent10.1016/j.cej.2010.10.027 ↗
40. Preparation and lead ion removal property of hydroxyapatite/polyacrylamide composite hydrogels10.1016/j.jhazmat.2008.02.018 ↗
41. Removal of lead ions in aqueous solution by hydroxyapatite/polyurethane composite foams10.1016/j.jhazmat.2007.08.003 ↗
42. Removal of aqueous lead ions by hydroxyapatites: equilibrium and kinetic processes10.1016/j.jhazmat.2006.02.039 ↗
43. Removal of aqueous lead by poorly-crystalline hydroxyapatites10.1016/j.chemosphere.2007.05.055 ↗
44. Reaction of calcium hydroxyapatite with Cd2+ and Pb2+ ions10.1016/j.colsurfa.2006.11.042 ↗
45. Removal of lead(II) from aqueous solutions using carbonate hydroxyapatite extracted from eggshell waste10.1016/j.jhazmat.2009.12.005 ↗
46. Immobilization of lead and cadmium from aqueous solution and contaminated sediment using nano-hydroxyapatite10.1016/j.envpol.2009.08.024 ↗
47. Evaluation of different phosphate amendments on availability of metals in contaminated soil10.1016/j.ecoenv.2006.06.008 ↗