Synthesis of bimetallic Fe–Zn nanoparticles and its application towards adsorptive removal of carcinogenic dye malachite green and Congo red in water

Gautam, Ravindra Kumar; Rawat, Vandani; Banerjee, Sushmita; Sanromán, M.A.; Soni, Shivani; Singh, Sanjeev Kumar; Chattopadhyaya, M. C.

doi:10.1016/j.molliq.2015.09.006

Cited by 160 publications

(39 citation statements)

References 56 publications

(66 reference statements)

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“…Higher the nano iron dose more would be the reactive sites. Once all the reactive sites are utilized by the dye molecules, the surface activity of nano iron particles is reduced, and hence the saturated surfaces induce adsorption process [63]. The reduction process is followed by adsorption, which was confirmed with data fit pseudo second-order model.…”

Section: Reaction Kinetics and Adsorption Isotherm Reaction Kineticssupporting

confidence: 57%

Decolorization of Mono Azo Dye and Textile Wastewater using Nano Iron Particles

Raman

Kanmani

2018

Env Prog and Sustain Energy

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Treatment of textile dyeing wastewater using existing physio‐chemical and biological methods is challenging and needs an efficient technique to manage toxic and recalcitrant textile dyes in the environment. As the nano iron particles are highly reactive, nontoxic, and cost‐effective, this study demonstrates the potential of nano iron particles in the decolorization of mono azo methyl orange dye and application to decolorize textile dyeing wastewater. The dye was decolorized 98% within 30 min of reaction time and 54% reduction in total organic carbon was observed. The detected intermediates products such as m/z 149, 128, 84, 73, 56, 55 confirm the efficiency of nano iron particles in degrading textile dyes into lower molecular compounds. The dye decolorization pathway and reaction mechanism are proposed. The treatment of real textile dyeing industry wastewater showed 82% dye color removal and reasonable reduction in the quantity of inorganic pollutants such as chlorides, sulfates. Hence,nano iron particles are highly recommended to remediate textile dyeing wastewater effectively. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S366–S376, 2019

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Section: Reaction Kinetics and Adsorption Isotherm Reaction Kineticssupporting

confidence: 57%

Decolorization of Mono Azo Dye and Textile Wastewater using Nano Iron Particles

Raman

Kanmani

2018

Env Prog and Sustain Energy

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“…It is therefore of prime importance to eliminate such toxic pollutants from industrial effluents before they are discharged into the aquatic environment (Gautam et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of cationic and anionic dyes from aqueous solution by utilizing almond shell as bioadsorbent

Arfi

Karoui

Mougin

et al. 2017

Euro-Mediterr J Environ Integr

103

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Almond shell is a food waste that is utilized as bioadsorbent for the uptake of Eriochrome Black T (EBT) and Malachite Green (MG) dyes from aqueous solutions. The biomaterial was characterized by specific surface area (BET), scanning electron microscopy, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis, and X-ray diffraction. The effects of the initial pH of solutions, particle size, adsorbent dosage, initial dye concentration, contact time, and temperature on the EBT and MG adsorption were studied using batch contact mode at 22°C. Rapid sorption dynamics following a second-order kinetic model were shown by kinetic studies. The adsorption equilibrium data were fitted well to the Freundlich isotherm for EBT and MG as anionic and cationic dyes, respectively. The adsorption of pollutants was exothermic (DH 0 = -1.7 kJ mol -1 for EBT and -32 kJ mol -1 for MG). The reaction was accompanied by a decrease in entropy (DS 0 \ 0 for EBT and MG). Negative values of DG 0 showed the spontaneity of the MG adsorption process. However, positive values of DG 0 showed that the EBT uptake by almond shell is not a spontaneous reaction. The results indicate that almond shell is a promising alternative for the biosorption of anionic (EBT) and cationic (MG) dyes from aqueous solutions.

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“…The 2928 and 2187 cm −1 bands correspond to C-H stretching vibration of the -CH 2 and CH 3 functional groups [16], [17]. The band at 1720 cm −1 is identified as carbonyl groups from dimerized saturated aliphatic acids [18], 1595.36 cm −1 and 1378.12 cm −1 are due to C= O, C-O and O-H groups and the presence of C-O stretching in carboxyl groups, respectively. The broad band at 1243 cm −1 corresponds to the C-O-C or C=O stretching vibration and 1036 cm −1 band may be assigned to C-O-C and O-H absorption [18].…”

Section: A the Characterization Of Green Synthesized Fenpsmentioning

confidence: 99%

“…The band at 1720 cm −1 is identified as carbonyl groups from dimerized saturated aliphatic acids [18], 1595.36 cm −1 and 1378.12 cm −1 are due to C= O, C-O and O-H groups and the presence of C-O stretching in carboxyl groups, respectively. The broad band at 1243 cm −1 corresponds to the C-O-C or C=O stretching vibration and 1036 cm −1 band may be assigned to C-O-C and O-H absorption [18]. In the mean time, the bands observed at 889.03, 763.93 and 599.63 cm -1 are correspond to phenol groups and bending vibrations of aromatics, carboxylic acids and amides [16].…”

Section: A the Characterization Of Green Synthesized Fenpsmentioning

confidence: 99%