Fast dye removal from water by starch-based nanocomposites

Gomes, Raelle F.; Azevedo, António; Pereira, Antonio G.B.; Muniz, Edvani C.; Fajardo, André R.; Rodrigues, Francisco H. A.

doi:10.1016/j.jcis.2015.05.026

Cited by 117 publications

(48 citation statements)

References 56 publications

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“…To overcome these drawbacks, polymeric hydrogels (chemical hydrogels) have been proposed as innovative adsorbents. [3][4][5][6][7][8][9] More recently the use of physical gels has been introduced, as they usually are biocompatible, [10] and may be used in medicine as scaffolds or drug-delivery systems. [11][12][13][14][15][16] In this paper we show the possibility to employt he peptidebased hydrogelator Fmoc-l-Phe-d-pGlu-OH (Fmoc = fluorenylmethyloxycarbonyl;F igure1) [17] as ad ye adsorbant.…”

Section: Introductionmentioning

confidence: 99%

Pseudopeptide‐Based Hydrogels Trapping Methylene Blue and Eosin Y

Milli

Zanna

Merlettini

et al. 2016

Chemistry A European J

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We present herein the preparation of four different hydrogels based on the pseudopeptide gelator Fmoc-l-Phe-d-Oxd-OH (Fmoc=fluorenylmethyloxycarbonyl), either by changing the gelator concentration or adding graphene oxide (GO) to the water solution. The hydrogels have been analysed by rheological studies that demonstrated that pure hydrogels are slightly stronger compared to GO-loaded hydrogels. Then the hydrogels efficiency to trap the cationic methylene blue (MB) and anionic eosin Y (EY) dyes has been analyzed. MB is efficiently trapped by both the pure hydrogel and the GO-loaded hydrogel through π-π interactions and electrostatic interactions. In contrast, the removal of the anionic EY is achieved in less satisfactory yields, due to the unfavourable electrostatic interactions between the dye, the gelator and GO.

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Section: Introductionmentioning

confidence: 99%

Pseudopeptide‐Based Hydrogels Trapping Methylene Blue and Eosin Y

Milli

Zanna

Merlettini

et al. 2016

Chemistry A European J

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“…Methyl orange (MO) and methyl red (MR) are examples of benzidine‐based anionic azo dyes which are prohibited in some countries due to their carcinogenic and toxic effects on living organisms but they are still used in some industries . MO and MR containing aromatic motifs are not susceptible for biodegradation process in the nature It is necessary to find and develop innovative and benign processes to remove these materials at low concentrations …”

Section: Introductionmentioning

confidence: 99%

Removal of acid dyes from aqueous solutions using a new eco‐friendly nanocomposite of CoFe₂O₄ modified with Tragacanth gum

Moghaddam

Jazi

Allahrasani

et al. 2019

J of Applied Polymer Sci

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A new composite of cobalt ferrite and Tragacanth gum (TG) was developed and applied to remove methyl orange (MO) and methyl red (MR) from wastewater samples simultaneously. The results showed that the presence of TG improved the capability of cobalt ferrite in removing the pollutants in considerably. The adsorption properties and surface morphology of the sorbent were compared with those of bare cobalt ferrite, TG, and TG grafted copolymer. The properties of the adsorbents were studied using Fourier transform infrared, scanning electron microscope, transmission electron microscope, X-ray diffraction, and vibrating sample magnetometer, and the effects of different factors such as the amount of the adsorbent, sample pH, contact time, and initial concentration were also evaluated and optimized through response surface methodology using central composite design. The optimal conditions for the adsorption of both dyes (100 mg L −1 as the concentration) were pH of 4.0, adsorbent dose of 0.5 mg mL −1 , and contact time of 110 min. Under these conditions, the MO and MR adsorption processes were found to follow pseudo-second-order kinetic model. The equilibrium adsorption data followed the Langmuir isotherm and the highest adsorption capacity was determined to be 336 and 387 mg g −1 for MO and MR, respectively.

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“…carbon [14,15] as well as clay minerals such as sodiummontmorillionite [16], bentonite [17], rectorite [18], montmorillonite [19], clay-polymer nanocomposites [20], starch-based nanocomposites [21] were used.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Ball Clay-Manganese Dioxide Nanocomposites

Thirumoorthy¹,

Krishna²

2018

Asian J. Chem.

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The main problem of the textile industries are releasing the massive amount of dyes in river or other water system. Owing to this badly behaviour results in contamination of underground water and damaging the entire ecological system. The main challenge is treatment of the polluted water without damage of environment. Over the past years, numerous techniques for the treatment of textile wastewater including of membrane filtration [1], ozonation [2], biosorption [3], electro coagulation [4], photo catalytic removal [5], coagulation and flocculation [6], electrochemical precipitation [7]. Nevertheless, these methods having some inadequacy to remove the dyes from wastewater. Nowadays, adsorption technique is a well-known method for the treatment of wastewater from dyes and heavy metals. At present, adsorption techniques have been considered owing to the low cost, ease of operation and less amount of residue. The dyes can be efficiently removed by adsorption technique in, which the liquefied dyes attached themselves to the adsorbent surface. Several adsorbents have been used for removal of dyes from aqueous solution. The adsorbents such as recycled alum sludge [8], waste coir pith [9], fir wood [10], rotton saw dust [11], fly ash [12], coconut shells [13], activatedWe report in present work the simple procedure to synthesize ball clay-manganese dioxide (MnO2) nanocomposites. The as-synthesized nanocomposites were characterized using powder XRD, FT-IR, SEM, TEM and BET surface area, respectively. Recently the explorations of clay modification for developing the adsorbent ability to get rid of the toxins from water. The XRD result indicates that the nanocomposite was crystalline in nature. The FTIR spectra showed that the native ball clay was successfully converted to ball clay-MnO2 nanocomposites, which were identified by the change in peaks. The SEM images of the ball clay-MnO2 nanocomposites showed that development in surface area. The TEM images indicated that the size of the nanoparticle. The BET studies of as synthesized ball clay-MnO2 nanocomposites indicate that surface area, total pore volume and average pore diameter values.This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License, which allows others to copy and redistribute the material in any medium or format, remix, transform, and build upon the material, as long as appropriate credit is given and the new creations are licensed under the identical terms.

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Fast dye removal from water by starch-based nanocomposites

Cited by 117 publications

References 56 publications

Pseudopeptide‐Based Hydrogels Trapping Methylene Blue and Eosin Y

Pseudopeptide‐Based Hydrogels Trapping Methylene Blue and Eosin Y

Removal of acid dyes from aqueous solutions using a new eco‐friendly nanocomposite of CoFe₂O₄ modified with Tragacanth gum

Preparation and Characterization of Ball Clay-Manganese Dioxide Nanocomposites

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Fast dye removal from water by starch-based nanocomposites

Cited by 117 publications

References 56 publications

Pseudopeptide‐Based Hydrogels Trapping Methylene Blue and Eosin Y

Pseudopeptide‐Based Hydrogels Trapping Methylene Blue and Eosin Y

Removal of acid dyes from aqueous solutions using a new eco‐friendly nanocomposite of CoFe2O4 modified with Tragacanth gum

Preparation and Characterization of Ball Clay-Manganese Dioxide Nanocomposites

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Removal of acid dyes from aqueous solutions using a new eco‐friendly nanocomposite of CoFe₂O₄ modified with Tragacanth gum