Adsorption of reactive blue 29 dye from aqueous solution by multiwall carbon nanotubes

Dehghani, Mohammad Hadi; Naghizadeh, Ali; Rashidi, Alimorad; Derakhshani, Elham

doi:10.1080/19443994.2013.791772

Cited by 44 publications

(16 citation statements)

References 30 publications

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“…These dyes can create serious problems for the environment and aquatic ecosystems . Also, allergy, dermatitis, skin irritation, cancer and mutation are destructive effects of dyes . The WHO guidelines show a level of 15 total color units for color, and above it would be remarkable .…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Toutounchi

Shariati

Mahanpoor

2019

Applied Organom Chemis

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In this study, core‐shell structures of magnetite nanoparticles coated with CMK‐8 ordered mesoporous carbon (Fe3O4@SiO2‐CMK‐8 NPs) have been successfully synthesized for the first time by carbonizing sucrose inside the pores of the Kit‐6 mesoporous silica. The nano‐sized mesoporous particles were characterized by X‐ray diffraction, Fourier transform‐infrared spectroscopy, scanning electron microscope, dynamic light scattering, vibrating‐sample magnetometer, Brunauer–Emmett–Teller (BET) and transmission electron microscopy instruments. The obtained nanocomposite was used for removal of Reactive Yellow 160 (RY 160) dye from aqueous samples. The N2 adsorption–desorption method (at 77 K) confirmed the mesoporous structure of synthesized Fe3O4@SiO2‐CMK‐8 NPs. Also, the surface area was calculated by the BET method and Langmuir plot as 276.84 m2/g and 352.32 m2/g, respectively. The surface area, volume and pore diameter of synthesized nanoparticles (NPs) were calculated from the pore size distribution curves using the Barrett–Joyner–Halenda formula (BJH). To obtain the optimum experimental variables, the effect of various experimental parameters on the dye removal efficiency was studied using Taguchi orthogonal array experimental design method. According to the experimental results, about 90.0% of RY 160 was removed from aqueous solutions at the adsorbent amount of 0.06 g, pH 3 and ionic strength = 0.05 m during 10 min. The pseudo‐second order kinetic model provided a very good fit for the RY 160 dye removal (R2 = 0.999). The Langmuir, Freundlich, Temkin and Dubinin–Radushkevich models were applied to describe the equilibrium isotherms, and the Langmuir isotherm showed the best fit to data with the maximum adsorption capacity of 62.893 mg/g. Furthermore, the Fe3O4@SiO2‐CMK‐8 NPs could be simply recovered by external magnet, and exhibited recyclability and reusability for a subsequent six runs.

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Section: Introductionmentioning

confidence: 99%

“…[1,2] Also, allergy, dermatitis, skin irritation, cancer and mutation are destructive effects of dyes. [3][4][5] The WHO guidelines show a level of 15 total color units for color, and above it would be remarkable. [6] Therefore, treatment of aqueous solutions containing dyes has been developed in the last few years.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Toutounchi

Shariati

Mahanpoor

2019

Applied Organom Chemis

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“…3(b)). At higher concentrations, the number of dye molecules ratio to the available adsorption sites is high and therefore, dye removal efficiency decreases [30]. The maximum dye removal efficiency was achieved at the lowest pH values (Fig.…”

Section: Adsorption Of Rb19 On F-mwcntsmentioning

confidence: 90%

“…Multi-walled carbon nanotubes (MWCNTs) have demonstrated their value as novel and strong adsorbents because of their small size, large specific surface area, negatively charged surface, and hollow/layered structure [30]. MWCNTs are more effective in cationic dye removal because of the attractions between their surface and positively charged dye molecules [31].…”

Section: Introductionmentioning

confidence: 99%

Removal of an anionic reactive dye from aqueous solution using functionalized multi-walled carbon nanotubes: isotherm and kinetic studies

Karimifard

Moghaddam

2015

Desalination and Water Treatment

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2015): Removal of an anionic reactive dye from aqueous solution using functionalized multi-walled carbon nanotubes: isotherm and kinetic studies, Desalination and Water Treatment, A B S T R A C TIn this research, the adsorption process of Reactive Blue 19 (RB19) as an anionic dye onto functionalized multi-walled carbon nanotubes (f-MWCNTs) was studied. For this purpose, four parameters including agitation time, adsorbent dose, initial dye concentration, and pH were examined. N 2 adsorption isotherms and Fourier transform infrared spectroscopy were used to characterize f-MWCNTs. Four isotherm and four kinetic models including two diffusion models were applied to comprehensively investigate the RB19 adsorption using f-MWCNTs. It was found that the adsorption follows Langmuir and Temkin equilibrium models with a maximum adsorption capacity of 217.39 mg g −1 . The adsorption process best fitted to pseudo-second-order kinetic model and by applying diffusion models, the predominant rate-limiting step was found to be physisorption during the liquid film diffusion.

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“…Removal percentages for samples were determined as 94, 97, 100, 100, 100, 100, 100, 100, 100% (only UV), and 55, 70, 74.5, 85, 89.5, 94, 97, 99, and 100% (UV/ZnO) at irradiation times 2,4,6,8,10,12,14,16, and 18 min, respectively. Comparison of dye removal percentages in the presence of UV alone and UV/ZnO process is shown in As shown in this figure, the dye removal percentages for the combined process (from 94 to 100% after 8 min) were more than that of the UV process alone (from 55 to 100% after 18 min).…”

Section: Separate and Combined Process Efficiency Of Zno And Uv In Acmentioning

confidence: 99%

Removal of acid 4092 dye from aqueous solution by zinc oxide nanoparticles and ultraviolet irradiation

Dehghani

Mahdavi

2014

Desalination and Water Treatment

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A B S T R A C TOne of the most important environmental concerns is that of water contamination from industrial effluent and dyes used in the textile industry are a primary cause of such contamination. Most conventional methods of wastewater treatment are insufficient to remove these pollutants, so tests were done on a method of removing acid red 4092 dye from wastewater. Tests investigated advanced oxidation processes, based on hydroxyl radical production, were used as an effective method to remove this type of pollutant. The purpose of this study was to investigate the removal of acid red 4092 dye by zinc oxide nanoparticles and ultraviolet radiation (UV-150 W). Dye concentration was measured before and after treatment using a spectrophotometer (Perkin-Elmer Lambada 25-UV/vis). Experiments were performed in a batch photo-reactor on synthetic wastewater with concentrations of 0.5, 1.0, 1.5, and 2 mg/L. The study investigated the effects of factors such as initial dye concentration, irradiation time, dose of catalyst, and pH on the removal efficiency of acid red 4092 dye by the photocatalytic process in the presence of zinc oxide nanoparticles. The dye samples were irradiated by ultraviolet radiation for 2-12 min. Experiments showed that the best result was obtained in the treatment with concentration of dye = 0.5 mg/L, radiation time = 12 min, pH 5, and dosage of catalyst = 0.2 g/L. Results of the study showed that with increasing concentration of acid red 4092 dye (2 mg/L), removal percentage was decreased and with increasing radiation time (12-14 min), removal percentage was increased (100%). This research determined that the photocatalytic process of zinc oxide nanoparticles in the UV reactor effectively removed the acid red 4092 dye from an aqueous solution.

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Adsorption of reactive blue 29 dye from aqueous solution by multiwall carbon nanotubes

Cited by 44 publications

References 30 publications

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Removal of an anionic reactive dye from aqueous solution using functionalized multi-walled carbon nanotubes: isotherm and kinetic studies

Removal of acid 4092 dye from aqueous solution by zinc oxide nanoparticles and ultraviolet irradiation

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