2011
DOI: 10.1016/j.jscs.2010.06.003
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Removal of nickel (II) from aqueous solutions by using nano-crystalline calcium hydroxyapatite

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Cited by 107 publications
(53 citation statements)
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“…The linear form of this model can be expressed as where (mgg −1 ) is the maximum adsorption capacity and (Lmg −1 ) is a constant related to the affinity of binding sites or enthalpy of biosorption and should vary with temperature [34]. Straight lines were obtained when a plot of / versus was made for different temperatures ( Figure 5).…”
Section: Biosorption Isothermsmentioning
confidence: 99%
See 1 more Smart Citation
“…The linear form of this model can be expressed as where (mgg −1 ) is the maximum adsorption capacity and (Lmg −1 ) is a constant related to the affinity of binding sites or enthalpy of biosorption and should vary with temperature [34]. Straight lines were obtained when a plot of / versus was made for different temperatures ( Figure 5).…”
Section: Biosorption Isothermsmentioning
confidence: 99%
“…The values indicate that the biosorption of Pb(II) is favourable and this is more favourable as both the initial metal concentration and temperature increased. The Freundlich isotherm model gives an expression encompassing the surface heterogeneity and the exponential distribution of active sites and their energies [34]. This model can be expressed linearly as…”
Section: Biosorption Isothermsmentioning
confidence: 99%
“…Furthermore, many researchers have proposed that a swelling effect happened within the internal structure of adsorbent by increasing of temperature, which is caused further ions penetration into the adsorbent structure [25,26].…”
Section: Effect Of Temperaturementioning
confidence: 99%
“…Na literatura, várias rotas de obtenção da hidroxiapatita são descritas, cada uma apresentando diferenças nas propriedades finais das matrizes cerâmicas obtidas. A HAp pode ser fabricada a partir de precipitação de soluções aquosas contendo os íons precursores, reação de neutralização, reação em estado sólido, gelcasting, dip Coating, spin Coating, entre outros [6,9,[12][13][14][15]. Na maioria dos processos de síntese dos pós de hidroxiapatita se faz necessário um posterior tratamento térmico para consolidar a matriz cerâmica por meio de mecanismos de sinterização [12,16,17].…”
Section: Introductionunclassified
“…Sua utilização vai muito além das áreas médicas, sendo esse mineral Eclética Química, 39, 141-150, 2014. 142 muito utilizado como remediador ambiental em processos de adsorção de metais pesados [6][7][8][9] e outros íons indesejados de efluentes líquidos contaminados [10,11]. Na literatura, várias rotas de obtenção da hidroxiapatita são descritas, cada uma apresentando diferenças nas propriedades finais das matrizes cerâmicas obtidas.…”
unclassified