Nickel doped Zinc oxide as a potential sorbent for decolorization of specific dyes, methylorange and tartrazine by adsorption process

Klett, Cornelis; Barry, Aliou Hamady; Balti, Imen; Lelli, P.; Schoenstein, Frédéric; Jouini, N.

doi:10.1016/j.jece.2014.03.001

Cited by 68 publications

(22 citation statements)

References 57 publications

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“…Similar relations have been reported in the literature [18,[32][33][34]. When the pH increases, TA becomes charged positively, while the tubes are not enough charged negatively and this causes a repulsion between the adsorbent and the adsorbate (pH > pKa) which leads to the decrease of the removal rate.…”

Section: Effect Of Ph On the Adsorption Processsupporting

confidence: 86%

“…A number of adsorbents, including activated carbon [8], pure multiwalled carbon nanotubes (MWCNTs) [9], acid activated red mud [10], fly ash [11], clay materials (montmorillonite [12], bentonite and zeolite [13]), biomaterials (peanut hull [14], orange peel [15] and rice husk [16]), inorganic metal oxides (ZnO [17,18], Fe 3-x La x O 4 ferrites [19] and c-Fe 2 O 3 modified TiO 2 [20]) as well as polymers [21] has been studied for dye removal. These adsorbents usually suffer from some disadvantages such as high cost, low adsorption capacity, multistep synthesis procedures or inability.…”

Section: Introductionmentioning

confidence: 99%

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Tartrazine removal from water using functionalized multiwall carbon nanotubes

Nait-Merzoug¹,

Guellati²,

Benjaballah³

et al. 2017

Desalination and Water Treatment

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a b s t r a c tThis investigation presents the advantages and limitations of tartrazine azo dye sorption on oxygen functionalized multiwalled carbon nanotubes (O-MWCNTs) synthesized by catalytic-CVD technique in LEREC laboratory, Algeria. Our adsorbent was characterized by FESEM, HR-TEM micrographs, Raman spectroscopy, ATG, XPS and specific surface area measurements (S BET ). The effects of different operational parameters like contact time, initial concentration of tartrazine, adsorbent amount, pH and temperature on the sorption processes were studied in batch mode. Experiments showed that the O-MWCNT was efficient for the removal of tartrazine and the equilibrium can be reached in 60 min. The removal efficiency was found to be dependent on the initial dye concentration and there is no significant effect of temperature on the adsorption process. Also, acidic pH was found to be favorable for dye removal, while the adsorption capacity decreases with the O-MWCNTs amount. For comparison, a similar study has been performed with a commercial activated carbon (CAC) and it was found out that the functionalized MWCNT has a shorter equilibrium time and higher dye adsorption capacity than CAC, so that O-MWCNTs can be considered as potential adsorbents for dye removal from wastewater. The models of Langmuir and Freundlich isotherms are applicable to describe the process of tartrazine adsorption on the O-MWCNTs and also on the CAC conventional adsorbent.

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Section: Effect Of Ph On the Adsorption Processsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Tartrazine removal from water using functionalized multiwall carbon nanotubes

Nait-Merzoug¹,

Guellati²,

Benjaballah³

et al. 2017

Desalination and Water Treatment

View full text Add to dashboard Cite

show abstract

“…were not in the range, suggesting that the adsorption precesses of CR and MC were physical adsorption and chemical adsorption, respectively [49]. The positive sorption entropy indicated an increased randomness at the solid/solution interface during the adsorption process [50].…”

Section: Adsorption Thermodynamics and Adsorption Mechanismmentioning

confidence: 99%

A hierarchically porous MgFe2O4/γ-Fe2O3 magnetic microspheres for efficient removals of dye and pharmaceutical from water

et al. 2016

Chemical Engineering Journal

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“…This could indicate that a higher temperature and steam activation would enhance the adsorption capacity. The adsorption capacities of tartrazine over a variety of adsorbents (Klett et al 2014;Banerjee and Chattopadhyaya 2013;Wawrzkiewicz and Hubicki 2009;Mittal et al 2007;Dotto et al 2012;Ansari et al 2011;Monser and Adhoum 2009;Andriantsiferana et al 2014) are compared and reported in Table 6. …”

Section: Langmuir Isotherm Iodelmentioning

confidence: 99%

One Step Carbonization/Activation Process for Carbonaceous Material Preparation from Pecan Shells for Tartrazine Removal and Regeneration after Saturation

Torres-Pérez¹,

Soria-Serna

Solache‐Ríos

et al. 2015

Adsorption Science & Technology

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ABSTRACT:The removal of tartrazine dye (A5) onto activated carbon produced from pecan nut shells (Carya illinoinensis) obtained under specific conditions and one step simultaneous carbonization/activation process was carried out in this work. First order, pseudo-second order and Elovich adsorption kinetic models were applied for the kinetic studies. The experimental equilibrium data were analysed using the isotherms of Langmuir, Freundlich and Temkin. Batch adsorption studies were performed for the removal of tartrazine azoic dye from aqueous solutions by two materials obtained at 600 °C (NAC-600) and 857 °C (NAC-857) and another two materials prepared at the same temperatures but simultaneously activated with steam (NAC-600-H 2 O and NAC-857-H 2 O). The zero point charge was between pH values of 9 to 11 and the maximum adsorption occurred when activated carbons were steam activated and were 4.47 and 13.66 mg g Ϫ1 for NAC-600-H 2 O and NAC-857-H 2 O respectively. The results clearly showed that the adsorption of A5 onto carbonaceous materials from nut shells (NAC) best fit to the pseudo secondorder model, and the rate constants were in the range from 489.3 to 509.4 g mg. Maximum uptake capacity of tartrazine was comparable to values encountered in the literature for other carbonaceous materials. The results show that under specific activation conditions, Mexican pecan nut shells, as agricultural residues, present high potential as a raw material to produce alternative adsorbent materials for dyes removal from aqueous solutions.

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Nickel doped Zinc oxide as a potential sorbent for decolorization of specific dyes, methylorange and tartrazine by adsorption process

Cited by 68 publications

References 57 publications

Tartrazine removal from water using functionalized multiwall carbon nanotubes

Tartrazine removal from water using functionalized multiwall carbon nanotubes

A hierarchically porous MgFe2O4/γ-Fe2O3 magnetic microspheres for efficient removals of dye and pharmaceutical from water

One Step Carbonization/Activation Process for Carbonaceous Material Preparation from Pecan Shells for Tartrazine Removal and Regeneration after Saturation

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