Removal of Acid Orange 7 and Remazol Black 5 reactive dyes from aqueous solutions using a novel biosorbent

Hamzeh, Yahya; Ashori, Alireza; Azadeh, Elham; Abdulkhani, Ali

doi:10.1016/j.msec.2012.04.015

Cited by 146 publications

(103 citation statements)

References 23 publications

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“…adsorption process was described by a pseudo-second-order kinetic, as indicated by the R 2 and the low difference between the calculated and experimental maximum capacities, q e,exp and q e,cal . Similar results are frequently cited in the literature on dye adsorption 5,14 . The Figure 5 presents the pH influence on dye-palygorskite interaction.…”

Section: Dye Adsorptionsupporting

confidence: 88%

“…Additionally, colorful effluents prevent light transmission for photosynthesis, causing ecological chaos, including in the food chain, which is by far the most critical of the effects produced 2,3 . The chemical substances responsible for the changed water color may also be harmful to human health, causing mutations, cancer, allergies and skin burns 4,5 . Dyes have complex aromatic structures 6 containing chromophore groups, which produce color, and auxochromes, which interact with the textile fibers 7 .…”

Section: Introductionmentioning

confidence: 99%

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Natural Palygorskite as an Industrial Dye Remover in Single and Binary Systems

Silva

Santos

et al. 2016

Mat. Res.

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Layered or fibrous clay minerals are used as adsorbents because they have good performance to remove inorganic and organic species. In this work, a Brazilian fibrous clay mineral was applied to remove Remazol Yellow GR industrial dye from simple and binary systems; this was performed in the presence of lead in the latter case. The adsorption efficiency was investigated under various conditions of pH, time, temperature and dye concentration. The experimental data were fitted to the kinetic pseudo-first-and pseudo-second-order models, and the isotherms were fitted to the Langmuir and Freundlich models. The maximum adsorption capacity was 20.08 mg g -1 at pH 2, 240 minutes and 298 K, and these data were better fit by the kinetic pseudo-second-order model. The equilibrium study was fitted to the Langmuir model at 298 K and Freundlich for other temperatures and binary systems. The dye sorption in the presence of lead was decreased to 15 mg g -1 . Therefore, palygorskite behaved as a promising solid for treating effluents.

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Section: Dye Adsorptionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Natural Palygorskite as an Industrial Dye Remover in Single and Binary Systems

Silva

Santos

et al. 2016

Mat. Res.

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“…It is clear that high removal rate of AO7 (higher than 99%) was achieved with optimized range of initial AO7 concentration of 66e181 mg/L and contact time of 7e15 min. By comparing, the AO7 adsorption capacity onto FWPC is higher than those onto reported adsorbents in the literature (Aber et al, 2007;Elizalde-Gonz alez and Hern andez-Montoya, 2009;Hamzeh et al, 2012;Hsiu-Mei et al, 2009;Silva et al, 2004aSilva et al, , 2004bPadmesh et al, 2005). In addition, it is worth noting that the optimal contact time of AO7 adsorption onto FWPC in the present study is far shorter than that of other adsorbents (Aber et al, 2007;Elizalde-Gonz alez and Hern andez-Montoya, 2009;Hamzeh et al, 2012;Hsiu-Mei et al, 2009;Silva et al, 2004aSilva et al, , 2004bPadmesh et al, 2005), confirming that FWPC is very efficient for AO7 removal from aqueous solution.…”

Section: Adsorption Efficiency ð%þ ¼supporting

confidence: 48%

“…where C e (mg/L) is the equilibrium concentration in the solution, q e (mg/g) is the AO7 adsorbed at equilibrium, b (mg/g) is the Hamzeh et al, 2012;Hsiu-Mei et al, 2009;Silva et al, 2004aSilva et al, , 2004bPadmesh et al, 2005).…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Removal of azo dye by a highly graphitized and heteroatom doped carbon derived from fish waste: Adsorption equilibrium and kinetics

Liu

Zhang

Liu

et al. 2016

Journal of Environmental Management

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a b s t r a c tA highly graphitized and heteroatom doped porous carbon was prepared from fish waste in the present study. The morphology and chemical composition of the resultant porous carbon were characterized by SEM-EDS, TEM, BET, XRD and Raman measurement. The prepared porous carbon was employed as an adsorbent for acid orange 7, a typical azo dye, removal from aqueous solution. The results showed that the porous carbon had ultrahigh surface area of 2146 m 2 /g, a high degree of graphitization structure and naturally doped with nitrogen and phosphorous. The maximum adsorption capacity of acid orange 7 reached 285.71 mg/g due to unique property of the prepared porous carbon. In addition, acid orange 7 adsorption onto the porous carbon well followed pseudo-second-order kinetics model and acid orange 7 diffusion in micropores was the potential rate controlling step.

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“…Waste water comes from many sources including the textiles industry during wet processing and dyeing, and presents a health hazard and is harmful to the environment. Contamination of various kinds of organic dyes in drinking water is increasing and threatening the safety of drinking water [10][11][12]. Therefore, removal of organic dyes from contaminated water has been an important topic for researchers.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation and antibacterial investigation of nano synthesized Ag₃VO₄particles @PAN nanofibers

Saud¹,

Ghouri²,

Pant³

et al. 2016

Carbon letters

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Well-dispersed Ag 3 VO 4 nanoparticles @polyacrylonitrile (PAN) nanofibers were synthesized by an easily controlled, template-free method as a photo-catalyst for the degradation of methylene blue. Their structural, optical, and photocatalytic properties have been studied by X-ray diffraction, transmission electron microscopy, field-emission scanning electron microscopy equipped with rapid energy dispersive analysis of X-ray, photoluminescence, and ultraviolet-visible spectroscopy. The characterization procedures revealed that the obtained material is PAN nanofibers decorated by Ag 3 VO 4 nanoparticles. Photocatalytic degradation of methylene blue investigated in an aqueous solution under irradiation showed 99% degradation of the dye within 75 min. Finally, the antibacterial performance of Ag 3 VO 4 nanoparticles @PAN composite nanofibers was experimentally verified by the destruction of Escherichia coli. These results suggest that the developed inexpensive and functional nanomaterials can serve as a non-precious catalyst for environmental applications.

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Removal of Acid Orange 7 and Remazol Black 5 reactive dyes from aqueous solutions using a novel biosorbent

Cited by 146 publications

References 23 publications

Natural Palygorskite as an Industrial Dye Remover in Single and Binary Systems

Natural Palygorskite as an Industrial Dye Remover in Single and Binary Systems

Removal of azo dye by a highly graphitized and heteroatom doped carbon derived from fish waste: Adsorption equilibrium and kinetics

Photocatalytic degradation and antibacterial investigation of nano synthesized Ag₃VO₄particles @PAN nanofibers

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Removal of Acid Orange 7 and Remazol Black 5 reactive dyes from aqueous solutions using a novel biosorbent

Cited by 146 publications

References 23 publications

Natural Palygorskite as an Industrial Dye Remover in Single and Binary Systems

Natural Palygorskite as an Industrial Dye Remover in Single and Binary Systems

Removal of azo dye by a highly graphitized and heteroatom doped carbon derived from fish waste: Adsorption equilibrium and kinetics

Photocatalytic degradation and antibacterial investigation of nano synthesized Ag3VO4particles @PAN nanofibers

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Photocatalytic degradation and antibacterial investigation of nano synthesized Ag₃VO₄particles @PAN nanofibers