Use of CeO2, TiO2 and Fe3O4 nanoparticles for the removal of lead from water

Recillas, Sonia; García, Ana; González, Edgar; Casals, Eudald; Puntes, Víctor; Sánchez, Antoni; Font, Xavier

doi:10.1016/j.desal.2011.04.036

Cited by 133 publications

(58 citation statements)

References 33 publications

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“…1). The initial concentrations of Pb(II) in the solutions were ranged from 25, 50, 100 to 200 mg/L [5][6][7]9,13,18]. The influence of pH on Pb(II) sorption was also investigated at various pH (3, 7 and 10).…”

Section: Photocatalytic Activity Under Sunlightmentioning

confidence: 99%

“…In these conditions, the efficiency of theoretical adsorption was found to be 90.6%. Recillas et al [6,7] applied TiO 2 nanoparticles for Pb(II) removal and the Pb 2+ adsorption capacity was 45%. Collazo et al [8] in his studies developed a novel synthesis method for the N-doped TiO 2 photocatalyst and the results revealed that the N-doped anatase TiO 2 was an optimal photocatalyst under visible light and sunlight irradiation, and the N-doped sample demonstrated the rate of reduction near 95%.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalyst treatment for lead(II) using titanium oxide nanoparticles embedded in PVA-alginate beads

Idris

Majidnia

Kamarudin

2016

Desalination and Water Treatment

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In this paper, titanium oxide nanoparticles were produced using the hydrothermal method and embedded in PVA-alginate beads to remove Pb(II) ions from aqueous solutions. The kinetics of the photocatalyst process was elucidated by varying operating parameters such as pH (3, 7 and 10) and initial Pb(II) concentrations (25, 50, 100 and 200 mg/L). The findings revealed that 99.1% of the Pb(II) was removed within 150 min and maximum removal occurred in initial concentration of 25 mg/L at pH 7. The titania PVA-alginate beads can be readily isolated from the aqueous solutions after the photocatalytic process and reused for at least seven times without significant loss in their initial properties. In addition, the reduction of Pb(II) from wastewater using titania PVA-alginate beads fitted the LangmuirHinshelwood kinetic model with a correlation coefficient (R 2 ) of 0.9931.

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Section: Photocatalytic Activity Under Sunlightmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalyst treatment for lead(II) using titanium oxide nanoparticles embedded in PVA-alginate beads

Idris

Majidnia

Kamarudin

2016

Desalination and Water Treatment

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“…corresponds to the range of metal and NPs concentrations typically found in literature in similar experiments (Recillas et al, 2011).…”

Section: Experimental Designmentioning

confidence: 99%

“…Briefly, the Ce 3+ ions from Ce(NO3)3 salt are oxidized at basic pH conditions to Ce 4+ using hexamethylenetetramine (HMT). Then, the CeO2 nanocrystals precipitate and are further stabilized in aqueous solution with the same reagent (HMT), which forms the double electrical layer to prevent NP agglomeration (Recillas et al, 2010;Recillas et al, 2011).…”

Section: Synthesis Of Nanoparticlesmentioning

confidence: 99%

“…With the fast development of various industries, a huge quantity of wastewater has been produced from industrial processes and it has been discharged in soils and water systems (Wang and Peng, 2010). One of the main concerns is the presence of heavy metals such as cadmium, lead and hexavalent chromium, which have been extensively used as target pollutants in research studies due to their high toxicity and also because of the well-documented human health problems associated to these compounds (Förstner, 1984;Tan and Xiao, 2009;Recillas et al, 2011). Water pollution is one of the main health concerns around the world.…”

Section: Introductionmentioning

confidence: 99%

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Use of cerium oxide (CeO2) nanoparticles for the adsorption of dissolved cadmium (II), lead (II) and chromium (VI) at two different pHs in single and multi-component systems

2015

Global NEST Journal

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Cerium oxide (CeO2) nanoparticles (NPs) were used for the removal of cadmium (II), lead (II) and chromium (VI) ions in single aqueous solutions and in solutions with mixtures of the three metals. The adsorption studies were carried out at pH 5 and 7 using a systematic factorial experimental design that considered the metal concentration from 1 mg l -1 to 10 mg l -1 and NP concentration from 0.064 g l -1 to 0.640 g l ). Data were fitted to a polynomial function obtaining the best reduced models. The type of system (single, multi-component) did not affect sorption capacity, whilst pH affected the sorption of Cd and Cr, but not that of lead. CeO2 nanoparticles proved to be effective adsorbents in removing all three heavy metals in multi-component systems, which opens a new window for their use as sorbent materials in complex waters contaminated with mixtures of heavy metals.

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Nanotechnology for Detection and Removal of Heavy Metals From Contaminated Water

Bhagat

Giri

2021

Functionalized Nanomaterials for Catalytic Application

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Use of CeO2, TiO2 and Fe3O4 nanoparticles for the removal of lead from water

Cited by 133 publications

References 33 publications

Photocatalyst treatment for lead(II) using titanium oxide nanoparticles embedded in PVA-alginate beads

Photocatalyst treatment for lead(II) using titanium oxide nanoparticles embedded in PVA-alginate beads

Use of cerium oxide (CeO2) nanoparticles for the adsorption of dissolved cadmium (II), lead (II) and chromium (VI) at two different pHs in single and multi-component systems

Nanotechnology for Detection and Removal of Heavy Metals From Contaminated Water

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