Adsorptive features of polyacrylamide–apatite composite for Pb2+, UO22+ and Th4+

Ulusoy, Uğur; Akkaya, Recep

doi:10.1016/j.jhazmat.2008.06.064

Cited by 81 publications

(26 citation statements)

References 60 publications

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“…Heavy metals and metalloids such as Hg(II), Pb(II), Cd(II), Cr(III), Cr(VI) and As(V) are known as a serious treat for the environment and human health with both toxic and carcinogenic effects (Barakat and Sahiner, 2008;Ozay et al, 2009Ozay et al, , 2010Sahiner et al, 2011a, b;Ozay et al, 2011;Hritcu et al, 2012;Denizli et al, 2004;Han et al, 2007;Ulusoy and Akkaya, 2009;Ramos et al, 2009;Guan et al, 2009). Arsenic is a trace element that occurs naturally in the Earth's crust and exists in groundwater due to natural weathering processes, as well as anthropogenic activities such as mining, coal ash disposal, pesticide application, wood preservation, energy and metallurgy.…”

Section: Introductionmentioning

confidence: 99%

Removal of As(V), Cr(III) and Cr(VI) from aqueous environments by poly(acrylonitril-co-acrylamidopropyl-trimethyl ammonium chloride)-based hydrogels

Dudu

Şahiner

Alpaslan

et al. 2015

Journal of Environmental Management

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Section: Introductionmentioning

confidence: 99%

Removal of As(V), Cr(III) and Cr(VI) from aqueous environments by poly(acrylonitril-co-acrylamidopropyl-trimethyl ammonium chloride)-based hydrogels

Dudu

Şahiner

Alpaslan

et al. 2015

Journal of Environmental Management

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“…In Figure 2(a), the peaks at 602, 962, and 1035 cm 21 are typical frequencies of the PO 4 groups of HA, and also, the sharp band at 3500 cm 21 shows AOH stretching. 28,29 When the m-s HA microcomposites' FTIR spectra were compared with those of pure HA and Fe 3 O 4 , the modifications could be clearly seen. With the incorporation of EGDMA in the structure, extra peaks between 1600 and 1750 cm 21 because of to the carbonyl stretching of EGDMA.…”

Section: Articlementioning

confidence: 98%

Separation of lysozyme with magnetically stabilized spherical hydroxyapatite microcomposites in a continuous flow system

Akkaya

2013

J of Applied Polymer Sci

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The aim of this study was to produce a spherical and magnetic hydroxyapatite (HA) microcomposite to use as an adsorbent for the separation of lysozyme in a magnetically stabilized fluidized bed and to separate lysozyme from a protein mixture composed of human immunoglobulin G, human serum albumin, and lysozyme. For this purpose, spherical and magnetic HA microcomposites (50-100 lm) were synthesized by suspension polymerization and characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, electron spin resonance, vibrating-sample magnetometry, Brunauer-Emmett-Teller analysis, and a swelling test. The specific surface areas of the pure HA and magnetic HA microcomposite were determined to be 72.25 and 151.53 m 2 /g, respectively. The swelling ratio of the spherical HA microcomposites was 150%. Adsorption experiments were conducted under conditions that differed in terms of pH, temperature, ionic strength, flow velocity, and magnetic field. According to the findings of the adsorption kinetic studies, the adsorption process was appropriate to pseudo-first-order kinetics. The separation of the lysozyme from the protein mixture was achieved by means of a 50 mM pH 7.0 phosphate buffer.

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“…Then AA (0.5 g) was added to the above suspension and stirred for an additional 5 min followed by addition of a solution of MBA (0.2 g) and APS (50 mg) in distilled water (10 mL). Finally, TEMED (100 lL) was added to propagate polymerization at 80°C [36]. The entire reaction was carried out in a four-necked, round-bottom flask equipped with a condenser (a constant pressure drop funnel), a thermometer and a nitrogen inlet for maintaining a constant nitrogen atmosphere while continuously stirring.…”

Section: Preparation Of Paa-hap Compositesmentioning

confidence: 99%

“…K and n can be determined from a linear plot of lg qe against lg Ce. The value of 1/n ranging between 0 and 1 is a measure of adsorption intensity or surface heterogeneity of the adsorbent [36]. The calculated isotherm parameters are shown in Table 2.…”

Section: Adsorption Isothermmentioning

confidence: 99%

Adsorptive features of poli(acrylic acid-co-hydroxyapatite) composite for $$ {{\text{UO}}_{ 2}}^{{ 2 { + }}} $$ UO 2 2 +

Liu

Duan

et al. 2015

J Radioanal Nucl Chem

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The copolymer of poli(acrylic acid-co-hydroxyapatite) (PAA-HAP) was prepared and characterized by means of FT-IR and SEM analysis. The adsorptive features of PAA-HAP for UO 2 2þ was studied as a function of pH, adsorbent dosage, initial metal ion concentration and temperature. The adsorption isotherm data fitted well to the Langmuir isotherm model. The adsorbed UO 2 2þ can be desorbed effectively by 0.1 M HNO 3 . The maximum adsorption capacities for UO 2 2þ of the dry PAA-HAP was 1.86 9 10 -4 mol/g. The high adsorption capacity and kinetics results indicate that PAA-HAP can be used as an alternative adsorbent to remove UO 2 2þ from aqueous solution.

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Adsorptive features of polyacrylamide–apatite composite for Pb2+, UO22+ and Th4+

Cited by 81 publications

References 60 publications

Removal of As(V), Cr(III) and Cr(VI) from aqueous environments by poly(acrylonitril-co-acrylamidopropyl-trimethyl ammonium chloride)-based hydrogels

Removal of As(V), Cr(III) and Cr(VI) from aqueous environments by poly(acrylonitril-co-acrylamidopropyl-trimethyl ammonium chloride)-based hydrogels

Separation of lysozyme with magnetically stabilized spherical hydroxyapatite microcomposites in a continuous flow system

Adsorptive features of poli(acrylic acid-co-hydroxyapatite) composite for $$ {{\text{UO}}_{ 2}}^{{ 2 { + }}} $$ UO 2 2 +

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