Adsorption of divalent heavy metal ions from water using carbon nanotube sheets

Tofighy, Maryam Ahmadzadeh; Mohammadi, Toraj

doi:10.1016/j.jhazmat.2010.09.008

Cited by 648 publications

(202 citation statements)

References 44 publications

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“…Finally, compared with most recent reports where loose CNT powders were soaked in solutions for several hours before their collection through filtering [3,18,32], which time consuming and less controllable, the current composite filters are robust, cheap, highly efficient, versatile and reusable. As such we hope that these results will be an important step towards the application of CNT filters at an industrial scale.…”

Section: Metal Ion Removalmentioning

confidence: 99%

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A highly efficient and versatile carbon nanotube/ceramic composite filter

Parham

Bates

Xia

et al. 2013

Carbon

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Please cite this article as: Parham, H., Bates, S., Xia, Y., Zhu, Y., A highly efficient and versatile carbon nanotube/ ceramic composite filter, Carbon (2012), doi: http://dx.doi.org/10.1016/j.carbon. 2012.11.032 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. The composite filter also exhibited good reusability for these applications, owing to the excellent thermal and chemical stability of the carbon nanotubes.

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Section: Metal Ion Removalmentioning

confidence: 99%

“…This would suggest that heavy metal ion adsorption by CNTs is a chemisorption process, resulting from chemical interactions involving valence (bond) forces and the sharing or exchange of electrons [18]. In addition CNTs display the added benefit that the adsorbed metal ions can be desorbed and thus CNTs can be reused [19].…”

Section: Introductionmentioning

confidence: 99%

A highly efficient and versatile carbon nanotube/ceramic composite filter

Parham

Bates

Xia

et al. 2013

Carbon

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“…The effect of time (5,15,30,60,180,360, and 720 min) on Pb 2+ sorption was determined by equilibrating the RBL-sorbate aliquot at pH 5.0 using 500 mg/L Pb 2+ solution. From the adsorption rate curve (Fig.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Mechanism of Pb2+ removal from aqueous solution using a nonliving moss biomass

Olu-Owolabi

Diagboya

Ebaddan

2012

Chemical Engineering Journal

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. a b s t r a c tBiosorption of lead (II) ions onto raw biomass of the moss plant Barbula lambarenensis has been studied using the batch equilibrium adsorption method. Equilibrium isotherms, kinetics and thermodynamic parameters have been evaluated. The FT-IR analysis showed that likely functional groups responsible for the adsorption are carboxyl, carbonyl, amides and hydroxyl groups. The pH for optimum adsorption is 5.0. Equilibrium data fit well to the Langmuir isotherm. The estimated maximum adsorption capacity was found to be 62.50 mg/g at 298 K and 90.91 mg/g at 323 K. The kinetic data obeyed the pseudo-second-order model. The free energy changes (DG o ) are positive and the reaction is exothermic with decreased randomness at the sorbent/solution interface. Taking into account its good adsorption capacity, ease of sample treatment, as well as availability, the biomass of B. lambarenensis is a promising cost-effective biosorbent for Pb 2+ removal from aqueous environment.

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“…At a time of continual development of technology, synthetic adsorbents also used in the removal of heavy metal ions from aqueous solutions are gaining increasing popularity (Tofighy and Mohammadi 2011;Gandhi and Meenakshi 2012;Majdan et al 2010). Sorbents prepared in the laboratory can display similar or even better physicochemical properties than their natural counterparts.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Ni(II) from model solutions using co-precipitated inorganic oxides

et al. 2013

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The aim of this work was to obtain an inorganic oxide system containing silica and magnesium oxide, and characterized by specific physicochemical properties, in particular well-defined adsorption parameters. The preparation process was carried out according to a co-precipitation method using solutions of sodium silicate and selected inorganic magnesium salt. The oxide system obtained (MgOÁSiO 2 ) was used as a support (adsorbent) of nickel(II) ions, whose precursors were model solutions of nitrates. The effectiveness of the adsorption process was evaluated using many different analytical techniques, including atomic absorption spectroscopy, energy dispersive X-ray spectroscopy and equivalent point titration. Moreover the stability of adsorbent/adsorbate bonding was estimated. The oxide systems-adsorbents-used in the process were also analyzed according to their physicochemical properties, especially changes in adsorption parameters. The last part of the study involved evaluation of the kinetics of the adsorption process depending on time and the pH of the reaction system.

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Adsorption of divalent heavy metal ions from water using carbon nanotube sheets

Cited by 648 publications

References 44 publications

A highly efficient and versatile carbon nanotube/ceramic composite filter

A highly efficient and versatile carbon nanotube/ceramic composite filter

Mechanism of Pb2+ removal from aqueous solution using a nonliving moss biomass

Adsorption of Ni(II) from model solutions using co-precipitated inorganic oxides

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