A novel cellulose–manganese oxide hybrid material by in situ soft chemical synthesis and its application for the removal of Pb(II) from water

Maliyekkal, Shihabudheen M.; Lisha, K.P.; Pradeep, Thalappil

doi:10.1016/j.jhazmat.2010.05.112

Cited by 148 publications

(66 citation statements)

References 43 publications

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“…It was found, as expected, that by increasing the mass of oxide adsorbent the effectiveness of removal of Cd(II) and Pb(II) ions is also increased. This fact is confirmed by numerous literature reports (Mahmoud et al 2015;Maliyekkal et al 2010;Xiong et al 2011) concerning different adsorbents used for the removal of cadmium and lead from aqueous solutions. The highest efficiencies of adsorption (100 %) were obtained utilizing 3 and 0.5 g of oxide adsorbent in the case of cadmium(II) and lead(II) ions respectively.…”

Section: Sorption Processsupporting

confidence: 78%

Removal of cadmium(II) and lead(II) ions from model aqueous solutions using sol–gel-derived inorganic oxide adsorbent

2015

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A study was conducted concerning the preparation and application of a novel synthetic oxide adsorbent of MgO-SiO 2 type. The material was prepared via a sol-gel route, utilizing magnesium ethoxide and tetraethoxysilane as precursors of magnesium oxide and silica respectively, and ammonia as a catalyst. The powder was comprehensively analyzed with regard to chemical composition (EDS method), crystalline structure, morphology, characteristic functional groups, electrokinetic stability and porous structure parameters (BET and BJH models). The synthesized oxide adsorbent is amorphous, with irregularly shaped particles, a relatively large surface area of 612 m 2 /g, and negative surface charge over almost the whole pH range. Comprehensive adsorption studies were performed to investigate the adsorption of Cd(II) and Pb(II) ions on the MgO-SiO 2 oxide adsorbent, including evaluation of adsorption kinetics and isotherms, the effect of pH, contact time and mass of adsorbent. It was shown that irrespective of the conditions of the adsorption process, the synthesized MgO-SiO 2 adsorbent exhibits slightly better affinity to lead(II) than to cadmium(II) ions (sorption capacity of 102.02 mg(Pb 2? )/g and 94.05 mg(Cd 2? )/g). The optimal time for removal of the analyzed metal ions was 60 min, although adsorption reached equilibrium within 10 min for Pb(II) and within 15 min for Cd(II) ions, which was found to fit well with a type 1 pseudo-second-order kinetic model. Additionally, adsorption efficiency was affected by the pH of the reaction system-better results were obtained for pH C7 irrespective of the type of metal ion.

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Section: Sorption Processsupporting

confidence: 78%

Removal of cadmium(II) and lead(II) ions from model aqueous solutions using sol–gel-derived inorganic oxide adsorbent

2015

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“…Careful interpretation of various peaks in the FTIR spectrum of MnO NPs gave an idea of stabilizing moieties (Supplementary figure S4a ). FTIR peaks around 504, 554, 758 and 827 cm -1 were due to MnO NPs [36][37][38][39][40]. However, peaks around 603 (R-CH group), 922 (-C-O bond), 1220 (CH 2 group or C-O stretching), 1319, 1368 (C-O vibrations), 1475 (bending frequency methylene group), 1618 (aromatic C = C bond stretching), 1707 (C = O stretching vibrations), 2925 (-C = C bond) and 3393 (OH bond) cm -1 were observed mainly due to the presence of eugenol, caryophyllene, humulene and eugenol acetate in CE [41][42][43].…”

Section: Uv-visible and Morphological Characterization Of Mno Npsmentioning

confidence: 99%

Green synthesis of manganese oxide nanoparticles for the electrochemical sensing of p-nitrophenol

et al. 2017

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Manganese oxide (MnO) NPs are widely used in contaminant sensing, drug delivery, data storage, catalysis and biomedical imaging. Green synthesis of NPs is important due to increased concern of environmental pollution. Green chemistry based synthesis of NPs is preferred due to its ecofriendly nature. In this study, MnO NPs of different sizes were synthesized in aqueous medium using clove, i.e., Syzygium aromaticum extract (CE) as reducing and stabilizing agents. These NPs were used for the electrochemical sensing of p-nitrophenol (PNP). The synthesis of MnO NPs was over in 30 min. MnO NPs of different sizes were obtained by varying metal ion concentration, metal ion volume ratio, CE concentration, CE volume ratio, and incubation temperature. Selectively, *4 nm MnO NPs were used for electrochemical sensing of paranitrophenol. The MnO NPs modified gold electrodes detected PNP with good sensitivity, 0.16 lA lM -1 cm 2 . The limit of PNP detection was 15.65 lM. The MnO NPs prepared using CE based green chemistry approach is useful for PNP sensing. These NPs can also be useful for various in vivo applications in which the NPs come in human contact.

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“…Also, adsorption is independent of the neighboring sites occupancy (Musico et al 2013). The adsorption capacity (q max ) of HANP@AP was compared with recently reported nanoadsorbents developed by nanoparticle impregnation on supports, like chitosan beads, polystyrene, orange peel, activated carbon, zeolites, tea waste, cellulose, electrospun fibers, polystyrene CE, polystyrenesulfone-CE, polystyrene CE-D-001, and alginate (Table 2) (Liu et al 2009;Zhang et al 2008Zhang et al , 2013Gupta and Nayak 2012;Nieto-Delgado and Rangel-Mendez 2012;Yin et al 2012;Panneerselvam et al 2011;Maliyekkal et al 2010;Hota et al 2008;Jia et al 2009;Su et al 2009;Ngomsik et al 2006). The Langmuir constants for Pb(II), Cd(II), and Ni(II) ions were found to be 0.41, 0.047, and 0.248 L g −1 , respectively.…”

Section: Mechanism Of Metal Bindingmentioning

confidence: 99%

Synthesis and characterization of hydroxyapatite nanoparticles impregnated on apple pomace to enhanced adsorption of Pb(II), Cd(II), and Ni(II) ions from aqueous solution

Chand

Pakade

2015

Environ Sci Pollut Res

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Hydroxyapatite nanoparticles were synthesized, characterized, and impregnated onto apple pomace surface (HANP@AP) for efficient removal of Pb(II), Cd(II), and Ni(II) ions from water. HANP@AP was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), transmission electron microscope (TEM), X-ray diffraction (XRD), and surface area analysis. Batch sorption studies were carried out to investigate the influence of different parameters as amount of dose (g), pH, time (min), and initial concentration (mg L(-1)) on adsorption process. Experimental kinetic data followed pseudo-second-order model and equilibrium data well fitted to Langmuir adsorption model with maximum adsorption capacities of 303, 250, and 100 mg g(-1) for Pb(II), Cd(II), and Ni(II) ions, respectively. Competitive adsorption of Pb(II), Cd(II), and Ni(II) ions in presences of each other was studied to evaluate the removal efficiency of HANP@AP against multi metal-loaded water. HANP@AP was successfully applied to real industrial wastewater with 100 % removal of all three metal ions even at high concentration. HANP@AP could be recycled for four, four, and three cycles in case of Pb(II), Cd(II) and Ni(II), respectively. The study showed that HANP@AP is fast, cost effective, and environmental friendly adsorbent for removal of Pb(II), Cd(II), and Ni(II) ions from real industrial wastewater.

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A novel cellulose–manganese oxide hybrid material by in situ soft chemical synthesis and its application for the removal of Pb(II) from water

Cited by 148 publications

References 43 publications

Removal of cadmium(II) and lead(II) ions from model aqueous solutions using sol–gel-derived inorganic oxide adsorbent

Removal of cadmium(II) and lead(II) ions from model aqueous solutions using sol–gel-derived inorganic oxide adsorbent

Green synthesis of manganese oxide nanoparticles for the electrochemical sensing of p-nitrophenol

Synthesis and characterization of hydroxyapatite nanoparticles impregnated on apple pomace to enhanced adsorption of Pb(II), Cd(II), and Ni(II) ions from aqueous solution

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