Attachment of benzo-crown ethers onto activated carbon cloth to enhance the removal of chromium, cobalt and nickel ions from aqueous solutions by adsorption

Duman, Osman; Ayrancı́, Erol

doi:10.1016/j.jhazmat.2009.11.018

Cited by 112 publications

(38 citation statements)

References 44 publications

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“…According to the speciation diagram of Ni(II) given in the literature, the percentage of free divalent Ni(II) ions in aqueous solution is almost 100% at pH 8.0 [45,46]. Hence, Ni(II) adsorption may occur at the studied pH values by electrostatic attraction between negatively charged surface and metal ions [47].…”

Section: Effect Of Initial Ph and Its Optimizationmentioning

confidence: 96%

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Dehydrated hazelnut husk carbon: a novel sorbent for removal of Ni(II) ions from aqueous solution

Sivrikaya

Albayrak

İmamoğlu

et al. 2012

Desalination and Water Treatment

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2012) Dehydrated hazelnut husk carbon: a novel sorbent for removal of Ni(II) ions from aqueous solution, Desalination and Water Treatment, 50:1-3, 2-13, A B S T R A C TThe present study has been performed to examine the adsorption ability of novel sorbent dehydrated hazelnut husk carbon (DHHC) towards Ni(II) ions from aqueous solution using the batch adsorption technique. The effective factors such as initial pH of the aqueous solution, contact time, initial Ni(II) concentration, adsorbent dosage, and temperature were investigated. The studies were also conducted to understand the effect of some co-existing ions which may be present in aqueous solutions. DHHC showed good adsorption potential for Ni(II) ions. The optimum initial pH value was selected as 5.0. The experimental data fitted well to the Langmuir adsorption isotherm model. Among the kinetic models tested for the adsorption of Ni(II), the pseudo-second-order model showed a good fit of the kinetic data. The thermodynamic parameters including the Gibbs free energy (DG), enthalpy (DH), and entropy (DS) changes indicated that the adsorption of Ni(II) ions onto DHHC was feasible, spontaneous, and exothermic in the temperature range of 25-55˚C. The results of this study showed the effectiveness and feasibility of DHHC for the removal of Ni(II) ions from aqueous solution.

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Section: Effect Of Initial Ph and Its Optimizationmentioning

confidence: 96%

“…The values of Freundlich constants K f and 1/n are determined from the intercept and slope of linear plot of ln q e vs. ln C e , respectively [46,61]. The non-linear Langmuir and Freundlich isotherms are shown graphically in Fig.…”

Section: Effect Of Initial Ni(ii) Concentration and Adsorption Isothermsmentioning

confidence: 99%

Dehydrated hazelnut husk carbon: a novel sorbent for removal of Ni(II) ions from aqueous solution

Sivrikaya

Albayrak

İmamoğlu

et al. 2012

Desalination and Water Treatment

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“…Carbon fibers can be produced with desirable strength‐to‐weight properties; they are finding increased structural uses in fields such as aerospace, aeronautical, and sporting goods applications. At an industrial level, carbon fibers are generally produced from various materials such as polyacrylonitrile (PAN), pitch , rayon , cellulose , and phenolic resins . Optimum stabilized PAN fibers can produce higher modulus carbon fibers.…”

Section: Introductionmentioning

confidence: 99%

Effect of carbonization and multi‐walled carbon nanotubes on polyacrylonitrile short carbon fiber ‐ epoxy composites

et al. 2016

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The present work deals with the characterization of multi‐walled carbon nanotubes (MWCNTs) filled and unfilled short carbon fiber reinforced epoxy resin composites. Short carbon fibers (10 mm) were selected at various processing stages such as (i) white color polyacrylonitrile fibers (PAN); (ii) pre‐carbonized carbon fibers (Precarb‐CF); (iii) oxidized carbon fibers (OCF); (iv) fully carbonized carbon fibers (CF‐low); and (v) sized carbon fibers (CF Sized). The investigated composites were characterized by three points bending test, hardness test, dynamic mechanical thermal analysis (DMTA), electrical conductivity test, thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The results show that the mechanical and electrical properties of the investigated materials markedly depend on the type of short carbon fibers and on the presence of MWCNTs. POLYM. COMPOS., 39:E817–E825, 2018. © 2016 Society of Plastics Engineers

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“…The carbon properties, especially the pore size distribution, play an important role in the performance of activated carbon applications. Generally, ACs with high majority of micropores are extensively applied for the removal of small molecule pollutants [4]. But for the adsorption of larger molecules (like dyes), ACs with highly developed mesopores are required.…”

Section: Introductionmentioning

confidence: 99%

Activated carbons with well-developed mesoporosity prepared by activation with different alkali salts

Gao

Yue

2015

Materials Letters

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Attachment of benzo-crown ethers onto activated carbon cloth to enhance the removal of chromium, cobalt and nickel ions from aqueous solutions by adsorption

Cited by 112 publications

References 44 publications

Dehydrated hazelnut husk carbon: a novel sorbent for removal of Ni(II) ions from aqueous solution

Dehydrated hazelnut husk carbon: a novel sorbent for removal of Ni(II) ions from aqueous solution

Effect of carbonization and multi‐walled carbon nanotubes on polyacrylonitrile short carbon fiber ‐ epoxy composites

Activated carbons with well-developed mesoporosity prepared by activation with different alkali salts

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