Combustion synthesis of iron oxide/carbon nanocomposites, efficient adsorbents for anionic and cationic dyes removal from wastewaters

Ianoş, Robert; Păcurariu, Cornelia; Muntean, Simona Gabriela; Muntean, Eliza; Nistor, Maria Andreea; Nižňanský, Daniel

doi:10.1016/j.jallcom.2018.01.240

Cited by 54 publications

(13 citation statements)

References 54 publications

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“…The pH pzc value for the composite was 6.1 that confirmed the negative charge on the surface of the composite material. Hence, at pH lower than 6.1, the positively charged surface limits the adsorption of cationic dye (poor electrostatic attractions) in acidic medium while at higher pH above 6.1, the cationic dyes were more attracted towards the negatively charged surface due to favored electrostatic attraction of the positively charged dye molecules towards the negatively charged surface [32,38,39].…”

Section: Effect Of Phmentioning

confidence: 99%

Synthesis of porous iron – zirconium mixed oxide fabricated ethylene diamine composite for removal of cationic dye

Kumari¹,

Dey²

2019

Desalination and Water Treatment

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Synthesis of iron-zirconium binary oxide fabricated ethylene diamine (IZBO-en) composite involved two step synthesis including mixed binary oxide synthesis followed by synthesis of binary oxide-ethylene diamine composite. Mixed binary oxide was synthesized by co-precipitation method using ammonia as neutralizing agent. Binary oxide based ethylene diamine composite was synthesized using sodium dodecyl sulfate and potassium persulfate as reagents in reaction. Yield of product was 88%. Characterization of the material was done using Fourier-transform infrared spectroscopy, scanning electron microscopy, and Brunauer-Emmett-Teller analysis. Surface area was found to be 54.74 m 2 g-1. The synthesized material was efficient for removal of cationic dye methylene blue which is known for its toxicological effects. Adsorption parameters like contact time, dose, interference and pH were studied. Maximum adsorption capacity was found to be 242.79 mg g-1. Kinetic data suggested the mechanism of adsorption follows pseudo-second-order rate (R 2 = 0.998) with a rate constant of 2.788 mg g-1 min-1 and follows Langmuir adsorption isotherm model (R 2 = 0.987). Thermodynamic study revealed the process to be spontaneous and feasible with large negative free energy (ΔG =-9.54 kJ mol-1). Column study shows a removal of 600 ml 2 mg L-1 with 1 g material. Desorption was achieved with 79% regeneration in acidic medium. Real wastewater from nearby textile industry was tested and found to get decolourized with the material. In conclusion, IZBO-en can be efficiently used in detoxification of cationic dyes.

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Section: Effect Of Phmentioning

confidence: 99%

Synthesis of porous iron – zirconium mixed oxide fabricated ethylene diamine composite for removal of cationic dye

Kumari¹,

Dey²

2019

Desalination and Water Treatment

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“…As a type of xanthene color, RhB is produced by phenols and phthalic anhydride, and it is widely used in materials [27]. Extracting the dye from waste clothing is a great inspiration for most researchers worldwide [28]. These techniques include electrostatic deposition, coagulation, air stripping, membrane filtration, catalytic carbon absorption, electrochemical oxidation, wet oxidation, biological oxidation, and chemical oxidation techniques [29].…”

Section: Current Treatment Technology For Color Removal Of Dyesmentioning

confidence: 99%

“…As far as organic contaminants are concerned, pigments have a high potential to alter the environment due to their high color and optical emission. They also cause changes in biological cycles that primarily impact photosynthesis processes [28]. Subsequently, it is essential to minimize their concentration in wastewater to a more secure constrain [49].…”

Section: Different Adsorbents For the Removal Of Rhb Dyementioning

confidence: 99%

Various Adsorbents for Removal of Rhodamine B Dye: A Review

Saigl

2021

Indones. J. Chem.

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Lately, there has been an increase in dye manufacturing, resulting in increased environmental pollution. Recent studies show a wide availability of usage adsorbents, including banana peels, potatoes, algae, etc. Food and Drug Administration prohibited the use of Rhodamine B (RhB) for its toxicity and harmful effects. Therefore, this study presents a wide range of non-conventional low-cost alternative adsorbents to remove RhB dye from wastewater. It has been observed that the mechanism of the dye adsorption is focused on kinetics, isotherm, and thermodynamics models, which depend on the chemical nature of the materials and various physicochemical experimental conditions such as solution pH, initial dye concentration, adsorbent dosage, and temperature of the system. The kinetic data of adsorption of RhB dye usually follow the pseudo-first-order and pseudo-second-order kinetic models. Several studies revealed that Langmuir and Freundlich adsorption isotherm models are frequently used to evaluate the adsorption capacity of the adsorbents. Furthermore, thermodynamic examination showed that RhB adsorption was endothermic and unconstrained in nature. Thus, both photocatalytic degradation and adsorption methods offer good potential to remove RhB dye from industrial effluents. The work is in progress to evaluate the possibility of using other modified waste biomass for industrial pollution control.

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“…69 In general, AO52 exhibits the narrowest boundary layer (lowest C i ) for both amine-CoFeNPs, most probably because of its smallest size and symmetrical (parasubstituted) structure that can easily penetrate/diffuse into the interior face of NPs following lm diffusion, while the intercept (C i ) is greater for other dyes larger in size for which the adsorption is more boundary layer-controlled. 72 The Boyd model provides information about the slowest step in the course of adsorption. The Boyd plot is a plot between B t and time t (min) ( Table 3).…”

Section: Dye Removal Kineticsmentioning

confidence: 99%

Anionic azo dyes removal from water using amine-functionalized cobalt–iron oxide nanoparticles: a comparative time-dependent study and structural optimization towards the removal mechanism

et al. 2020

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Combustion synthesis of iron oxide/carbon nanocomposites, efficient adsorbents for anionic and cationic dyes removal from wastewaters

Cited by 54 publications

References 54 publications

Synthesis of porous iron – zirconium mixed oxide fabricated ethylene diamine composite for removal of cationic dye

Synthesis of porous iron – zirconium mixed oxide fabricated ethylene diamine composite for removal of cationic dye

Various Adsorbents for Removal of Rhodamine B Dye: A Review

Anionic azo dyes removal from water using amine-functionalized cobalt–iron oxide nanoparticles: a comparative time-dependent study and structural optimization towards the removal mechanism

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