Preparation and characterization of magnetic rectorite/iron oxide nanocomposites and its application for the removal of the dyes

Wu, Dongliang; Zheng, Pengwu; Chang, Peter R.; Ma, Xiaofei

doi:10.1016/j.cej.2011.09.029

Cited by 88 publications

(35 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A growing number of researchers are attempting to develop new adsorbents with magnetic properties for the removal of different pollutants from wastewater due to the advantage of easy separation of solid-liquid phases (Giri et al 2011;Zhang et al 2011;Wu et al 2011). Due to their strong adsorption capacity, low cost, chemical stability, low toxicity, easy separation and excellent recycling capability, iron oxide materials have a great potential as valuable adsorbents for the removal and recovery of many types of contaminants from aqueous solution (Tang and Lo 2013;Xu et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Effective removal of methylene blue from aqueous solution using a new magnetic iron oxide nanosorbent prepared by combustion synthesis

Păcurariu

Paska

Ianoş

et al. 2015

Clean Techn Environ Policy

View full text Add to dashboard Cite

A magnetic iron oxide nanopowder (MnP) prepared by a new combustion technique was characterized and tested as adsorbent for methylene blue (MB) removal from aqueous solution. The effects of pH, adsorbent dose, initial dye concentration, contact time, and temperature on the amount of MB adsorbed were studied. The adsorption kinetics were described by a pseudo-second-order model, and the equilibrium experimental data were well fitted to the Langmuir isotherm, yielding a maximum adsorption capacity of 25.54 mg g -1 . The adsorption mechanism is governed by electrostatic forces and is highly dependent on the pH. The MnP adsorbent demonstrated excellent stability, showing good removal efficiency even after eight cycles of reuse, suggesting its potential large-scale application for the removal and recovery of MB from wastewater.

show abstract

Section: Introductionmentioning

confidence: 99%

Effective removal of methylene blue from aqueous solution using a new magnetic iron oxide nanosorbent prepared by combustion synthesis

Păcurariu

Paska

Ianoş

et al. 2015

Clean Techn Environ Policy

View full text Add to dashboard Cite

show abstract

“…(or Fe 2? ), and the synthesized Fe 3 O 4 nanoparticles can be located between clay plates as well as on the surface of clay [20]. The existence of magnetic Fe 3 O 4 in the magnetic laponite RD clay was confirmed by the characteristic peaks at about 2h = 30.5, 35.5, 57.5 and 62.5 [24].…”

Section: Xrd Tem and Tga Studiesmentioning

confidence: 76%

“…The absence of reactive centers on magnetic particles restricts their application in wastewater treatments. Thus, magnetic nanoparticle-based-adsorbents are generally modified by polymers, organosilanes, and neat clays containing active anionic/cationic centers [14,[18][19][20]. These modifications improve the adsorption capacity of magnetic adsorbents because of introduced active centers.…”

Section: Introductionmentioning

confidence: 99%

“…Nanocomposite adsorbents comprising only nanoclays [20] or magnetic Fe 3 O 4 nanoparticles [18] have been applied to adsorb dye from wastes. There are just few reports in simultaneous incorporation of nanoclay and magnetite [21].…”

Section: Introductionmentioning

confidence: 99%

“…Laponite RD is a synthetic layered silicate with anionic centers. The magnetic adsorbents based on laponite RD nanoclay have been synthesized and examined to remove cationic dye from aqueous solutions [20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis of magnetic carboxymethyl chitosan-g-poly(acrylamide)/laponite RD nanocomposites with enhanced dye adsorption capacity

Mahdavinia

Karami

2015

Polym. Bull.

View full text Add to dashboard Cite

This investigation reports the synthesis of magnetic nanocomposite hydrogels based on carboxymethyl chitosan-g-poly(acrylamide) (CMC-g-PAAm). The magnetic nanoparticles were prepared via in situ co-precipitation of iron salts in the presence of laponite RD nanoclay. Different contents of magnetic nanoclay were utilized to prepare magnetic CMC-g-PAAm nanocomposites. The structure of nanocomposite hydrogels was characterized by transmittance electron microscopy, scanning electron microscopy, X-ray diffraction, thermogravimetric analysis, and vibrating sample magnetometer techniques. The obtained magnetic nanocomposites were examined to remove crystal violet (CV) cationic dye from aqueous solutions. By introducing magnetic laponite RD, the nanocomposites showed an enhanced adsorption capacity for CV dye. Equilibrium adsorption data were modeled according to Langmuir and Freundlich isotherm models. The following experimental isotherm data from models was affected by the content of magnetic laponite RD. The maximum adsorption of crystal violet on magnetic nanocomposite hydrogels was 169 mg g -1 . In addition to high adsorption capacity of magnetic nanocomposites for CV, the regeneration of obtained adsorbents was effective and the corresponding nanocomposites may be considered as new candidate in the treatment of colored water.

show abstract

Clay‐Based Adsorbents for the Analysis of Dye Pollutants

Shahadat

Momina

Yasmin

et al. 2021

Applied Water Science Volume 1

View full text Add to dashboard Cite

Preparation and characterization of magnetic rectorite/iron oxide nanocomposites and its application for the removal of the dyes

Cited by 88 publications

References 16 publications

Effective removal of methylene blue from aqueous solution using a new magnetic iron oxide nanosorbent prepared by combustion synthesis

Effective removal of methylene blue from aqueous solution using a new magnetic iron oxide nanosorbent prepared by combustion synthesis

Synthesis of magnetic carboxymethyl chitosan-g-poly(acrylamide)/laponite RD nanocomposites with enhanced dye adsorption capacity

Clay‐Based Adsorbents for the Analysis of Dye Pollutants

Contact Info

Product

Resources

About