Enhancing ferrate(VI) oxidation process to remove blue 203 from wastewater utilizing MgO nanoparticles

Eskandari, Zeinab; Talaiekhozani, Amirreza; Talaie, Mohammad Reza; Banisharif, Farhad

doi:10.1016/j.jenvman.2018.10.056

Cited by 23 publications

(7 citation statements)

References 18 publications

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“…Certainly, scientific research communities have developed numerous technologies such as biological processes, membrane processing, advanced oxidation processes, chemical and electrical techniques, coagulation, chemical precipitation, and adsorption for the removal of dyes from water effluents. − Adsorption in comparison to other techniques is a more efficient and non-destructive approach, owing to its low consumption of energy, simple design and operation, high efficiency, environmental friendliness, and cost-effective nature . Assorted adsorbents have been developed for the adsorption process like graphene oxide, zeolites, clay, chitin, agriculture waste, and mGO/PVA CGs .…”

Section: Introductionmentioning

confidence: 99%

Magnetic Graphene Oxide/Chitin Nanocomposites for Efficient Adsorption of Methylene Blue and Crystal Violet from Aqueous Solutions

Gautam

Hooda

2020

J. Chem. Eng. Data

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The present study is focused on the synthesis of prominent magnetic graphene oxide/chitin nanocomposites, which behaves as an adsorbent for organic dyes under visible light. The nanocomposites were characterized using physicochemical techniques such as X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, vibrating-sample magnetometer, scanning electron microscopy, and transmission electron microscopy. A band gap energy of 2.01 eV was evaluated from Tauc and Davis–Mott plots. Batch adsorption studies were performed on crystal violet and methylene blue dyes with varying parameters such as time, pH, concentration, dosage, and temperature, which resulted to excellent adsorption activities of 403.78 mg/g for crystal violet and 332.61 mg/g for methylene blue. The as-synthesized nanocomposite showed excellent recovery capability, retaining its adsorption efficiency even after nine cycles of regeneration. The adsorption equilibrium data fitted well into the pseudo-second-order model and Langmuir isotherm model, while the spontaneity and exothermic nature of the adsorption phenomenon are demonstrated by thermodynamic studies. A comparative adsorption study results to a selective adsorption of cationic dyes over anionic ones, which goes in conformity with the high negative value of zeta potential obtained at neutral pH.

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Section: Introductionmentioning

confidence: 99%

Magnetic Graphene Oxide/Chitin Nanocomposites for Efficient Adsorption of Methylene Blue and Crystal Violet from Aqueous Solutions

Gautam

Hooda

2020

J. Chem. Eng. Data

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“…Analytical grade azithromycin was purchased from Sigma, Malaysia. In this study, Fe(VI) was prepared by the electrochemical method according to the instructions described in [33]. A digital pH meter, the AZ-86502 (Taiwan) was used to measure the pH.…”

Section: Methodsmentioning

confidence: 99%

Comparison of Azithromycin Removal from Water Using UV Radiation, Fe (VI) Oxidation Process and ZnO Nanoparticles

Talaiekhozani¹,

Joudaki²,

Banisharif

et al. 2020

IJERPH

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Antibiotics are resistant to biodegradation, and their removal by biological processes is difficult. The purpose of this study was to investigate the removal of azithromycin from water using ultraviolet radiation (UV), Fe (VI) oxidation process and ZnO nanoparticles. The effect of different parameters such as pH, temperature, hydraulic retention time (HRT), the concentration of Fe (VI) and ZnO nanoparticles and UV intensity on the removal of azithromycin from water was investigated. The optimal conditions for the removal of azithromycin were a pH of 2, a temperature of 25 • C, a HRT of 15 min, and a ratio of ZnO nanoparticles to the initial concentration of azithromycin (A/P) of 0.00009 which was fitted by Langmuir isotherm. In addition, the optimal conditions for the removal of azithromycin using UV radiation were a pH of 7, a temperature of 65 • C, a HRT of 60 min, and UV radiation power of 163 mW/cm 2 . For the Fe (VI) oxidation process, the optimal conditions were a pH of 2, a temperature of 50 • C and a HRT of 20 min. Also, the optimal ratio of Fe (VI) to the initial concentration of antibiotic was between 0.011 and 0.012. The results of this study showed that the Fe (VI) oxidation process, UV radiation, and ZnO nanoparticles were efficient methods for the removal of azithromycin from water.

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“…In the end, it was turned into powder. To produce activated carbon derived from pine cone, 20 mL of 1M H 3 PO 4 was added to 10 g of pine cone powder for chemical activation and then it was completely mixed and washed with distilled water to remove excess acid from the adsorbent surface (20). The modified powder with phosphoric acid was then placed in a furnace with vacuum chamber under helium gas at 650˚C for 2 hours (21).…”

Section: Preparation Of Adsorbentmentioning

confidence: 99%

Reactive Blue 203 dye Removal Using Biosorbent: A Study of Isotherms, Kinetics, and Thermodynamics

Bagheri

Nasiri

Bahrami³

2018

Avicenna J Environ Health Eng

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Nowadays, due to increasing usage of dye in various industries and its destructive effects on health and environment, it is necessary to remove dyes from industrial wastes. Although few studies can be found on using pine cone for removal of different dyes, it has not been used yet to remove Reactive Blue 203 (RB203) dye. The purpose of this study is to investigate RB203 dye adsorption using activated carbon produced from pine cone. Optimal values of influencing factors for RB203 dye removal were obtained. The results showed that the maximum removal was occurred at a pH of 2, temperature of 30˚C, dye concentration of 30 mg/L, adsorbent dosage of 100 mg/L, and contact time of 15 min. The maximum removal percentage was 98.48%. In order to study the synthesized activated carbon, some characterization methods including scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR) spectroscopy and Brunauer-Emmett-Teller (BET) have been used. Investigation of adsorption isotherm models revealed that adsorption of RB203dye can be described through D-R and Temkin isotherm models. Additionally, RB203 dye removal follows the pseudo-firstorder kinetic equation.

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Enhancing ferrate(VI) oxidation process to remove blue 203 from wastewater utilizing MgO nanoparticles

Cited by 23 publications

References 18 publications

Magnetic Graphene Oxide/Chitin Nanocomposites for Efficient Adsorption of Methylene Blue and Crystal Violet from Aqueous Solutions

Magnetic Graphene Oxide/Chitin Nanocomposites for Efficient Adsorption of Methylene Blue and Crystal Violet from Aqueous Solutions

Comparison of Azithromycin Removal from Water Using UV Radiation, Fe (VI) Oxidation Process and ZnO Nanoparticles

Reactive Blue 203 dye Removal Using Biosorbent: A Study of Isotherms, Kinetics, and Thermodynamics

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