Removal of dyes from water using chitosan hydrogel/SiO2 and chitin hydrogel/SiO2 hybrid materials obtained by the sol–gel method

Copello, Guillermo Javier; Mebert, Andrea Mathilde; Raineri, Mariana; Pesenti, Mariela P.; Díaz, Luis Eduardo

doi:10.1016/j.jhazmat.2010.11.097

Cited by 132 publications

(54 citation statements)

References 43 publications

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“…Analysis of FTIR and Raman spectra suggest that the chitin scaffold interacts with silica by hydrogen bond formation; especially at the C(6) position [157,161,186]. The results of the hydrothermal silicification of chitin open new possibilities for synthesis of chitin-silica composites, which gain particular interest in the development of bone substitutes for tissue engineering [77,187]; waste water treatment [188], and drug delivery systems [189].…”

Section: Extreme Biomimetics: Development Of Chitin-based Inorganic-omentioning

confidence: 99%

Poriferan Chitin as a Versatile Template for Extreme Biomimetics

et al. 2015

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Abstract:In this mini-review, we shall first cover a short history of the discovery of chitin isolated from sponges; as well as its evolutionarily ancient roots. Next, we will delve into the unique structural, mechanical, and thermal properties of this naturally occurring polymer to illuminate how its physicochemical properties may find uses in diverse areas of the material sciences. We show how the unique properties and morphology of sponge chitin renders it quite useful for the new route of "Extreme Biomimetics"; where high temperatures and pressures allow a range of interesting bioinorganic composite materials to be made. These new biomaterials have electrical, chemical, and material properties that have applications in water filtration, medicine, catalysis, and biosensing. OPEN ACCESSPolymers 2015, 7 236

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Section: Extreme Biomimetics: Development Of Chitin-based Inorganic-omentioning

confidence: 99%

Poriferan Chitin as a Versatile Template for Extreme Biomimetics

et al. 2015

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“…The most used adsorbent in removing colours and other pollutants include heavy metal from effluents is activated carbon. However, conventional activated carbon that been used today are expensive for a large scale of treatment [21][22][23]. Recently, the researchers has been focus on the development of low cost adsorbent for a full scale treatment [5,24,25].…”

Section: Introductionmentioning

confidence: 99%

Factor Affecting Textile Dye Removal Using Adsorbent From Activated Carbon: A Review

2017

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Abstract. Industrial company such as textile, leather, cosmetics, paper and plastic generated wastewater containing large amount of dye colour. The removal of dye materials are importance as the presence of this kind of pollutant influence the quality of water and makes it aesthetically unpleasant. As their chemical structures are complicated, it is difficult to treat dyes with municipal waste treatment operations. Even a small quantity of dye does cause high visibility and undesirability. There have been various treatment technique reviewed for the removal of dye in wastewater. However, these treatment process has made it to another expensive treatment method. This review focus on the application of adsorbent in dye removal from textile wastewater as the most economical and effective method, adsorption has become the most preferred method to remove dye. The review provides literature information about different basis materials used to produce activated carbon like agricultural waste and industrial waste as well as the operational parameters factors in term of contact time, adsorbent dosage, pH solution and initial dye concentration that will affect the process in removing textile dye. This review approach the low cost and environmental friendly adsorbent for replacing conventional activated carbon.

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“…It is also proven that, silica components can form strong bonds with chitosan and can enhance the photocatalytic activity of TiO 2 even after the removal of the UV source. [24,25] The novel hybrid materials can be successfully applied as adsorbents of pollutants in wastewater.…”

Section: Introductionmentioning

confidence: 99%

Structure and properties of innovative silica hybrid materials synthesized for environmental applications

Todorova

Chernev

Okolie

et al. 2015

Biotechnology & Biotechnological Equipment

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Today, environmental protection is one of the main goals in the strive to preserve the human existence. Development in this area requires invention of new materials, which can reduce the levels of pollution. Hybrid materials are suitable for this purpose, because they combine different desirable properties existing in separate sources into one unique and accessible structure. Most of the commonly used materials for the degradation of different kind of pollutants are based on titanium dioxide, because of its photocatalytic activity under UV irradiation. Innovative silica hybrid materials, containing an organic component (chitosan) and titanium nanoparticles, were successfully synthesized via the solÀgel method and tetraethyl orthosilicate was used as a silica source and network former. Interaction between the chitosan and titanium units, and their influence on the structure of final material, were observed and discussed. A homogeneous structure with an even distribution of titanium and chitosan particles was visible from scanning electron microscopy (SEM) micrographs and the particle size varied between 50 and 150 nm. The formed silica network, characteristic peaks of chitosan and titanium groups and possible interactions between them are observed from Fourier transform infrared (FTIR) spectroscopy spectra and nuclear magnetic resonance (NMR) spectroscopy results. The behaviour of the synthesized silica hybrids after thermal treatment was investigated via differential thermal/thermo-gravimetric analysis (DTA/TG) analysis and the sorption and degradation activities of the obtained hybrid materials were investigated using a solution of methyl orange as model pollutant. The structure and properties of the synthesized silica hybrid materials assert their potential application in environmental remediation due to their photocatalytic degradation and sorption activities against pollutants.

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Removal of dyes from water using chitosan hydrogel/SiO2 and chitin hydrogel/SiO2 hybrid materials obtained by the sol–gel method

Cited by 132 publications

References 43 publications

Poriferan Chitin as a Versatile Template for Extreme Biomimetics

Poriferan Chitin as a Versatile Template for Extreme Biomimetics

Factor Affecting Textile Dye Removal Using Adsorbent From Activated Carbon: A Review

Structure and properties of innovative silica hybrid materials synthesized for environmental applications

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