Nanocrystalline ferrites used as adsorbent in the
treatment process of waste waters resulted from
ink jet cartridges manufacturing

Vodă, Raluca; Negrea, Adina; Lupa, Lavinia; Ciopec, Mihaela; Negrea, Petru; Davidescu, Corneliu Mircea; Butnariu, Monica

doi:10.1515/chem-2015-0092

Cited by 12 publications

(6 citation statements)

References 24 publications

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“…An important application of the newly synthesized materials is represented by their usage as adsorbents for removal of different pollutants the high affinity of arsenic ions for iron being well known [3,4,5,38,39,40,41,42,43,44,45]. In the present paper the performance of new synthesized materials for arsenic removal from water solutions was studied, by determining the maximum adsorption capacity of each produced adsorbent material.…”

Section: Resultsmentioning

confidence: 99%

“…Iron oxides are widely used in chemical synthesis, in the wastewater remediation process, as well as in the treatment of drinking water. Beside these examples, iron oxides are used as catalysts in various industrial processes [1,2], as adsorbent for removal of some pollutants [3,4,5], or as extractants used to improve the adsorbent properties of some synthesized or chemically functionalized adsorbent materials [6,7,8,9]. Catalysis and adsorption processes are based on mass transfer phenomena taking place at the solid–liquid or solid–gas interface; to increase the efficiency of these phenomena it is necessary for the iron oxides to have a large specific surface area.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis, Characterization and Adsorptive Performances of a Composite Material Based on Carbon and Iron Oxide Particles

Minzatu

Davidescu

Negrea

et al. 2019

IJMS

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The aim of this paper was to produce a new composite material based on carbon and iron oxides, starting from soluble starch and ferric chloride. The composite material was synthesized by simple thermal decomposition of a reaction mass obtained from starch and iron chloride, in an inert atmosphere. Starch used as a carbon source also efficiently stabilizes the iron oxides particles obtained during the thermal decomposition. The reaction mass used for the thermal decomposition was obtained by simultaneously mixing the carbon and iron oxide precursors, without addition of any precipitation agent. The proper composite material can be obtained by rigorously adhering to the stirring time, temperature, and water quantity used during the preparation of the reaction mass, as well as the thermal regime and the controlled atmosphere used during the thermal decomposition. Synthesized materials were characterized using thermogravimetric analysis, X-Ray Diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infra-red spectroscopy (FT-IR). The performances of the obtained material were highlighted by studying their adsorbent properties and by determining the maximum adsorption capacity for arsenic removal from aqueous solutions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Adsorptive Performances of a Composite Material Based on Carbon and Iron Oxide Particles

Minzatu

Davidescu

Negrea

et al. 2019

IJMS

Self Cite

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“…The T e value can be calculated using Fig.9 from reveres of best fitting line. The constants Values for the iron emission lines taken from reference [9]. The equations of fitting lines and the R 2 were shown in the figure.…”

Section: Energy Dispersive X-ray Analysismentioning

confidence: 99%

“…From the measured width which depending on Stark effect and the standard line width for this line. The electrons density were calculated by the equation [8,9]:…”

Section: Energy Dispersive X-ray Analysismentioning

confidence: 99%

A Spectroscopic and structural study of FeCoSb alloy

Kadhem¹

2019

IJP

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Fe, Co and Sb nanopowders were fruitfully prepared by electrical wire explosion method in Double distilled and de-ionized water (DDDW) media. The formation of iron, cobalt and antimony (FeCoSb) alloy nanopowder was monitored by X-ray diffraction. The x-ray diffraction pattern indicates that there are iron, cobalt and antimony peaks. Optical properties of this alloy nanoparticles were characterized by UV-Visible absorption spectra. The absorption peak position is shifted to the lower wavelengths when the current increases. That means the mean size of the nanoparticles controlled by changing the magnitude of the current. The surface morphological analysis is carried out by employing Scanning Electron Microscope (SEM). Particles with varies size were observed also from the images the some particles have uneven shapes with agglomerate and the other have spherical shape. The exploding FeCoSb alloy wire plasma parameters is study by optical emission spectroscopy. The emission spectra of the plasma have been recorded and analyzed. The plasma electron temperature (Te), was determined by Boltzmann plot, and the electron density (ne), by Stark broadening for wire with diameter 0.3 mm and current of 75A in distilled water.

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“…Technologies are being developed for removing arsenic from water, such as, coagulation [14][15][16][17][18], oxidation [17,19], reverse osmosis [17,[20][21][22], ion exchange [14,15,17,, electrocoagulation [50][51][52], adsorption onto fine and coarse iron oxides [53,54] and other materials including iron impregnated activated carbon and natural arsenic adsorbents [17,33,36,37,[55][56][57][58][59][60][61][62][63][64][65][66][67][68][69][70]. Taking into account both the arsenic removal efficiency and economic considerations, adsorption represents the most eloquent method, which offers higher design flexibility concomitant with high-quality water treatment.…”

Section: Introductionmentioning

confidence: 99%

Testing of Chemically Activated Cellulose Fibers as Adsorbents for Treatment of Arsenic Contaminated Water

et al. 2021

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Exposure to different arsenic concentrations (higher than 10 μg/L), either due to the direct consumption of contaminated drinking water or indirectly by using contaminated food is harmful for human health. Therefore, it is important to remove arsenic from aqueous solutions. Among many arsenic removal technologies, adsorption offers a promising solution with a good efficiency, however the material used as adsorbent play a very vital role. The present investigation evaluated the behavior of two cellulose-based adsorbent materials, i.e., viscose fibers (V) and its TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) derivative, obtained by using the well-established TEMPO-mediated protocol (VF). Due to the known arsenic affinity for Fe ions the two materials were later doped with it. This was done after a preliminary functionalization with di-2-ethylhexyl phosphoric acid (DEHPA), to obtain two materials: V-DEHPA-Fe and VF-DEHPA-Fe. Arsenic adsorption is known to be pH dependent (between 6 and 8); therefore, the optimal pH range for As(V) adsorption has been established. In order to evaluate the adsorption mechanism for both the synthesized materials, the influence of contact time, temperature and initial concentration was evaluated. Langmuir, Freundlich and Sips equilibrium isotherm models were used in order to determine the ability of the model to describe As(V) adsorption process. The maximum adsorption capacity of the material V-DEHPA-Fe was 247.5 µg As(V)/g with an As(V) initial concentration of 5 mg/L and for the material VF-DEHPA-Fe it was 171.2 µg As(V)/g with initial concentration of 5 mg/L.

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Nanocrystalline ferrites used as adsorbent in the treatment process of waste waters resulted from ink jet cartridges manufacturing

Cited by 12 publications

References 24 publications

Synthesis, Characterization and Adsorptive Performances of a Composite Material Based on Carbon and Iron Oxide Particles

Synthesis, Characterization and Adsorptive Performances of a Composite Material Based on Carbon and Iron Oxide Particles

A Spectroscopic and structural study of FeCoSb alloy

Testing of Chemically Activated Cellulose Fibers as Adsorbents for Treatment of Arsenic Contaminated Water

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