Magnetic chitosan composite for adsorption of cationic and anionic dyes in aqueous solution

Cho, Dong-Wan; Jeon, Byong‐Hun; Chon, Chul-Min; Schwartz, Franklin W.; Jeong, Yoojin; Song, Hocheol

doi:10.1016/j.jiec.2015.01.023

Cited by 165 publications

(68 citation statements)

References 42 publications

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“…A magnetic composite material composed of nanomagnetite (NMT), heulandite (HE), and cross-linked chitosan was prepared and used as an adsorbent for methylene blue (MB) and methyl orange (MO). The adsorption of MB and MO followed the pseudo-second-order kinetics, and the maximum adsorption capacities were 45.1 and 149.2 mg/g at pH 5.5, respectively [8]. The authors developed a novel chitosan/Al 2 O 3 /magnetic iron oxide nanoparticle composite acting as an adsorbent for removing MO, a model anionic dye, from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Gd-DTPA Adsorption on Chitosan/Magnetite Nanocomposites

et al. 2016

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The synthesis of the chitosan/magnetite nanocomposites is presented. Composites were prepared by co-precipitation of iron(II) and iron(III) salts by aqueous ammonia in the 0.1 % chitosan solution. It was shown that magnetite synthesis in the chitosan medium does not affect the magnetite crystal structure. The thermal analysis data showed 4.6 % of mass concentration of chitosan in the hybrid chitosan/magnetite composite. In the concentration range of initial Gd-DTPA solution up to 0.4 mmol/L, addition of chitosan to magnetite increases the adsorption capacity and affinity to Gd-DTPA complex. The Langmuir and Freundlich adsorption models were applied to describe adsorption processes. Nanocomposites were characterized by scanning electron microscopy (SEM), differential thermal analysis (DTA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and specific surface area determination (ASAP) methods.

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Section: Introductionmentioning

confidence: 99%

Gd-DTPA Adsorption on Chitosan/Magnetite Nanocomposites

et al. 2016

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“…al, 2011). However, in the case of MB, there was no electrostatic attraction between MB and the E-NFC/CS since MB was a cationic dye (Cho et al 2015).…”

Section: Effect Of Ph On Dye Adsorptionmentioning

confidence: 99%

“…Water contamination by dyes from various industries such as textiles, leather, and dyestuffs has attracted more attention, because the dyes in these industrial wastewaters are toxic, carcinogenic, and non-biodegradable (Liu et al 2015a;Cho et al 2015). Therefore, a variety of treatment methods such as adsorption, oxidation, membrane, and biological treatment have been developed to remove dyes in the wastewaters (Pei et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of ethylenediamine-modified nanofibrillated cellulose/chitosan composites on adsorption of cationic and anionic dyes from aqueous solution

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Huang

et al. 2016

Carbohydrate Polymers

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“…A global revival with regard to the utilization and interdisciplinary research of natural polymers has been spurred on due to the importance of renewable resources, the development of innovative products for science and technology through functional modifications, and an abundant availability of natural polymers [9,. The excellent biological and chemical properties of natural polymers make them potentially useful in areas including: chemical engineering, environmental engineering, agriculture, nutrition, pharmaceuticals, biomedical, membranes, coatings, food, and horticulture [16,. Among these, medical, environmental, and food applications are likely to be the fastest growing areas for natural hydrophilic polymers.…”

Section: Introductionmentioning

confidence: 99%