Removal of anionic azo dyes from aqueous solution using magnetic polymer multi-wall carbon nanotube nanocomposite as adsorbent

Gao, Hejun; Zhao, Siyuan; Cheng, Xi; Wang, Xiaodong; Zheng, Liqiang

doi:10.1016/j.cej.2013.03.004

Cited by 185 publications

(55 citation statements)

References 48 publications

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“…They are attractive alternative adsorbents for the removal of dye contaminants from aqueous effluents because they have large specific surface area, small size as well as hollow and layered structures. CNTs as adsorbents have been found to be efficient with a capacity that exceeds that of activated carbon [7][8][9][10][11][12][13][14] . To the best of our knowledge, there are few papers currently published in the literature reporting the use of CNTs for dye removal from aqueous effluents [7][8][9][10][11][12][13][14] .…”

Section: Introductionmentioning

confidence: 99%

“…The adsorbent can be regenerated or stored in a dry place without direct contact with the environment 3 . Different adsorbents have been used for the removal of dyes from aqueous solutions 4,[6][7][8] . Among these, carbon nanotube (CNTs) materials have been utilised for the successful removal of dyes from aqueous effluents [7][8][9][10][11][12][13][14] .…”

Section: Introductionmentioning

confidence: 99%

“…Different adsorbents have been used for the removal of dyes from aqueous solutions 4,[6][7][8] . Among these, carbon nanotube (CNTs) materials have been utilised for the successful removal of dyes from aqueous effluents [7][8][9][10][11][12][13][14] . CNTs have attracted increasing research interest as a new adsorbent [7][8][9][10][11][12][13][14] .…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of a textile dye from aqueous solutions by carbon nanotubes

et al. 2013

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Multi-walled and single-walled carbon nanotubes were used as adsorbents for the removal of Reactive Blue 4 textile dye from aqueous solutions. The adsorbents were characterised using Raman spectroscopy, N 2 adsorption/desorption isotherms and scanning and transmission electron microscopy. The effects of pH, agitation time and temperature on adsorption capacity were studied. In the acidic pH region, the adsorption of the dye was favourable using both adsorbents. The contact time to obtain equilibrium isotherms at 298-323 K was fixed at 4 hours for both adsorbents. For Reactive Blue 4 dye, Liu isotherm model gave the best fit for the equilibrium data. The maximum sorption capacity for adsorption of the dye occurred at 323 K, attaining values of 502.5 and 567.7 mg g -1 for MWCNT and SWCNT, respectively.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Adsorption of a textile dye from aqueous solutions by carbon nanotubes

et al. 2013

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“…The negative impact of textile production mainly comes from the dyeing process. The chemical structure with the aromatic ring of dye causes highly toxic waste, carcinogenic, mutagenic, allergies and dermatological diseases (Gao et al, 2013). Various waste treatments such as filtration, coagulation, sedimentation, ion exchange and adsorption have been carried out.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Remazol Yellow FG Decolorination by Adsorption and Photoelectrocatalytic Degradation

Wahyuningsih

Estiningsih

Anjani

et al. 2017

Molekul

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The combination of adsorption and photoelectrocatalytic degradation system for Remazol Yellow FG decolorization has been studied. The adsorption of Remazol Yellow FG was carried out using alumina and silica, which was activated using H 2 SO 4 1 M and NaOH 1 M. The adsorption results at optimum pH were then used for photoelectrocatalytic process. Photoelectrocatalytic degradation cell was built by electrode Ti/TiO 2 as a cathode and Ti/TiO 2 -PbO as an anode. Material characterizations were performed by UV-Vis Spectrophotometers, X-Ray Diffraction (XRD), and Fourier Transform Infra-Red (FTIR). Activation of the adsorbent can increase Remazol Yellow FG adsorption on alumina base and silica acid that were reached 99.500% and 81.631%, respectively. The optimum condition of Remazol Yellow FG 6 adsorption by alumina acid was at pH 3, alumina base was at pH 4 and pH 5, and silica base was at pH 6 and pH 10. Degradation of Remazol Yellow FG using TiO 2 -PbO electrode was 72.756% at potential cells of 7.5 Volts for 10 minutes. The combination of adsorption and photoelectrocatalytic degradation can decrease the concentration of Remazol Yellow FG achieved 99.705%.

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“…Consequently, the many techniques such as membrane separation, electrochemical, flocculation-coagulation, reverse osmosis, ozone oxidation, biological treatments, etc. were assessed for dye removal (10). However, it discovered that the mentioned techniques are faced with many limitations such as high cost, formation of hazardous byproducts and intensive energy requirements.…”

Section: Introductionmentioning

confidence: 99%

Application of AzollaFiliculoides Biomass in Acid Black 1 Dye Adsorption from Aqueous Solution

et al. 2014

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Background and purpose: The textile dyes are considered as important pollutants due to the toxicity on human and environment. Therefore, the dye removal from industrial effluents is necessary. This study evaluates the ability of Azolla for the adsorption of acid black 1 (AB1) dye from aqueous solution. Materials and Methods:This was an experimental-laboratory study. The Azolla biomass was sun dried, crushed and sieved to particle sizes in the range of 1-2 mm. Then, it treated with 0.1 M HCl for 5 h, followed by washing with distilled water, and it used as an adsorbent. The effect of study parameter was investigated, and the residues AB1 concentration was measured by DR2800 spectrophotometer at in λ max = 622 nm. Results:The results indicated that the efficiency of AB1 adsorption decreased with increased initial dye concentration. It increased with increased contact time and adsorbent. The highest adsorption efficiency was occurred at pH = 2. The equilibrium data were the best fitted on Langmuir isotherm and pseudo-second-order kinetic model. Conclusion:The Azolla could present high ability in dye removal. Therefore, it can be used as inexpensive and effective adsorbent in textile effluent treatment.

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Removal of anionic azo dyes from aqueous solution using magnetic polymer multi-wall carbon nanotube nanocomposite as adsorbent

Cited by 185 publications

References 48 publications

Adsorption of a textile dye from aqueous solutions by carbon nanotubes

Adsorption of a textile dye from aqueous solutions by carbon nanotubes

Enhancing Remazol Yellow FG Decolorination by Adsorption and Photoelectrocatalytic Degradation

Application of AzollaFiliculoides Biomass in Acid Black 1 Dye Adsorption from Aqueous Solution

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