Adsorption removal of congo red onto magnetic cellulose/Fe3O4/activated carbon composite: Equilibrium, kinetic and thermodynamic studies

Zhu, Huihui; Fu, Yongqian; Jiang, Ru; Jiang, Jiulei; Xiao, Ling; Zeng, Guangming; Zhao, Shuaiqi; Wang, Y.

doi:10.1016/j.cej.2011.08.020

Cited by 403 publications

(112 citation statements)

References 48 publications

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“…The Into the mixture, aqueous solution NaOH 1 M is added dropwise until pH 11 while flowing N 2 gas at room temperature and stirring at 200 rpm [21,22]. The magnetic nanoparticles are black precipitates, which can be separated from the solution using magnet permanent.…”

Section: Chemicals and Instrumentationmentioning

confidence: 99%

Synthesis and Characterization of Fe3O4 Nanoparticles Modified with Polyethylene Glycol as Antibacterial Material

Hariani

Desnelli

Fatma

et al. 2018

J. Pure App. Chem. Res.

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The iron oxide (Fe 3 O 4 ) nanoparticles modified with polyethylene glycol (PEG) was synthesized by co-precipitation methods using ferric and ferrous ions as the precursors. Further, the antibacterial activity was performed against gram-positive and gram-negative bacteria. The Fe 3 O 4 -PEG was characterized using X-Ray Diffraction (XRD), Fourier Transform Infra Red (FTIR), Scanning Electron Microscopy (SEM) with energy dispersive X-Ray analysis (EDAX) and Vibrating Sample Magnetometer (VSM). The particle size of Fe 3 O 4 -PEG calculated using XRD is 46.2 nm. The study confirmed that Fe 3 O 4 -PEG is superparamagnetic and has a saturation magnetization of 56.43 emu/g. The prepared Fe 3 O 4 -PEG gives the effect of both gram-positive and gram-negative pathogenic bacterial strains hence this material has potential utilization in the field of pharmaceutical and biomedical in the future.

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Section: Chemicals and Instrumentationmentioning

confidence: 99%

Synthesis and Characterization of Fe3O4 Nanoparticles Modified with Polyethylene Glycol as Antibacterial Material

Hariani

Desnelli

Fatma

et al. 2018

J. Pure App. Chem. Res.

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“…By plotting the (αhν) 2 vs. hν in eV and obtaining the extrapolation point of this curve, the band gap energy of the product can be determined. Figure 5 shows the band gap energy plot of CdO based on the diffuse reflectance spectrum (DRS) of solid state UV-Vis (in the inset of this Figure).…”

Section: Photocatalytic Activity Of the Cdo Rhombus Nanostructurementioning

confidence: 99%

“…A major challenge we deal with in industries such as textiles, food, paper, cosmetics and so on has always been refining toxic contaminants before discharging them into the environment [1,2]. The techniques used to eliminate coloured contaminants from wastewaters are as follows: coagulation, flocculation, membrane filtration and adsorption [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Preparation of CdO Rhombus-Like Nanostructure and Its Photocatalytic Degradation of Azo Dyes from Aqueous Solution

Tadjarodi

Imani

Kerdari

et al. 2014

Nanomaterials and Nanotechnology

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In this work, a special rhombus-like structure of CdO composed of particles at the nanometre scale was successfully synthesized for the first time. A facile hydrothermal process with a post-reaction calcination was employed to prepare this nanomaterial. Scanning electron microscopy (SEM) images showed that the obtained rhombus-like structure consists of nanoparticles with an average size of 29 nm. The band gap energy of 1.9 eV based on a diffuse reflectance spectroscopy (DRS) showed that the product can be favourable to photoactivity in the visible region of sunlight. The prepared sample was employed to destruct carcinogenic azo dyes, such as Congo Red (CR), Malachite Green (MG) and Crystal Violet (CV). The obtained results showed that the CdO with the special morphology was able to effectively catalyse the degradation of these pollutants. The related decolourization efficiencies were obtained by up to 100% after various lengths of time of light irradiation. It was concluded that the photodegradation of the mentioned organic dyes under visible light irradiation by a CdO rhombus-like nanostructure follows the first-order reaction kinetics. The effect of the initial pH and contact time on the percentage of the decolourization of these organic dyes was also studied.

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“…Over time, many approaches have been reported for production of composite-based adsorbents. Most of the techniques applied to enhance adsorption , chitosanbased semi-IPN hydrogel composites (Zhao et al, 2012), Sodium alginate/Na + -rectorite composite (Yang et al, 2012), cobalt-hectorite composite , poly (vinyl alcohol)/chitosan composites , Polyaniline/chitosan composite (Janaki et al, 2012), hydroxyapatite/chitosan composite (Hou et al, 2012), PVA hydrogels, and PVA/AC composite (Sandeman et al, 2011), alginate/titania nanoparticle composite (Mahmoodi et al, 2011), AC/ferrospinel composite (Ai and Jiang, 2010) and magnetic cellulose/Fe 3 O 4 /activated carbon composite (Zhu et al, 2011a) to name a few. Interestingly, most of the composite adsorbents derivatives were synthesized based on availability, localized source, exhibits higher ion exchange properties and held the advantages of cross linking selectivity.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Composite Embedded Clinoptilolite for the Removal of Color and Lead from Textile Waste Water

Kamaruddin¹,

Yusoff

Aziz³

et al. 2013

IJSRIN

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Abstract.A new composite adsorbent synthesized from coconut shell activated carbon (CSAC) and clinoptilolite (Cl) for the removal of color and heavy metals from real textile waste water was investigated. OPC as the binder agent held the advantages of CSAC and CL which improved the adsorption capacities of color and lead (Pb). The prepared composite adsorbent with interfacial pores show better mass transfer activity proven by its mechanical properties and stability. The surface area of the CSAC/Cl composite adsorbent was observed at 39.32 m 2 /g having pore diameter of 3.38 nm which in the mesoporous class. The equilibrium data was best fitted to Langmuir. Meanwhile, the kinetics model of pseudo-second-order was favorable with high correlation coefficient more than 0.98 for both color and Pb adsorption. The characterization of the CSAC/Cl composite adsorbent indicates that the presence of SiO 2 (clinoptilolite) in the mixtures influenced the adsorption properties and chemical functional group whereas OPC played a significant role in strength development of the adsorbent. The abstract should be informative and completely self-explanatory, briefly present the topic, state the scope of the experiments, indicate significant data, and point out major findings and conclusions.

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Adsorption removal of congo red onto magnetic cellulose/Fe3O4/activated carbon composite: Equilibrium, kinetic and thermodynamic studies

Cited by 403 publications

References 48 publications

Synthesis and Characterization of Fe3O4 Nanoparticles Modified with Polyethylene Glycol as Antibacterial Material

Synthesis and Characterization of Fe3O4 Nanoparticles Modified with Polyethylene Glycol as Antibacterial Material

Preparation of CdO Rhombus-Like Nanostructure and Its Photocatalytic Degradation of Azo Dyes from Aqueous Solution

Preparation and Characterization of Composite Embedded Clinoptilolite for the Removal of Color and Lead from Textile Waste Water

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