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Nanohybrid Layered Double Hydroxides Used to Remove Several Dyes from Water

1
Departamento de Química Inorgánica e Ingeniería Química, Instituto Universitario de Química Fina y Nanoquímica (IUQFN), Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, 14071 Córdoba, Spain
2
Laboratoire Physico Chimie des Matériaux Catalyse et Environnement, Universitè des Sciences et de la Technologie d’Oran-Mohamed Boudiaf, Oran 31000, Algeria
*
Author to whom correspondence should be addressed.
ChemEngineering 2019, 3(2), 41; https://doi.org/10.3390/chemengineering3020041
Received: 10 February 2019 / Revised: 9 April 2019 / Accepted: 14 April 2019 / Published: 19 April 2019
(This article belongs to the Special Issue Advanced Applications of Layered Double Hydroxides)
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Abstract

For the preparation and characterization of several layer double hydroxides (LDH) with inorganic interlayer anions (carbonate and nitrate) and nanohybrids, two organo-LDHs were studied in detail. The dodecylbenzene sulfonate (DBS) was used as an organic interlayer anion to modify the hydrophilic nature of the interlayer. The aim of the modification of the layered double hydroxides (LDH) was to change the hydrophilic character of the interlayer to hydrophobic with the purpose of improving its ability to adsorb several (anionic and cationic) dyes from water. These compounds have been used as adsorbents of amaranth (Am), diamine green B (DGB) and brilliant green (BG) dyes. Adsorption tests were conducted using variable pH values, contact times and initial dye concentrations (adsorption isotherms) to identify the optimum conditions for the intended purpose. Adsorbents and adsorption products were characterized by several physicochemical techniques. The results of the adsorption tests showed that the organo-LDH nanohybrids could be efficient adsorbents in the removal of studied dyes from water. Thus, it can be concluded that nanohybrids studied in this work might act as suitable supports in the design of adsorbents for the removal of a wide spectrum of dyes with the aim of reducing the adverse effects on water resources. View Full-Text
Keywords: layered double hydroxide; hydrotalcite; nanohybrid; dyes; adsorption; amaranth; diamine green B; brilliant green layered double hydroxide; hydrotalcite; nanohybrid; dyes; adsorption; amaranth; diamine green B; brilliant green
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Abdellaoui, K.; Pavlovic, I.; Barriga, C. Nanohybrid Layered Double Hydroxides Used to Remove Several Dyes from Water. ChemEngineering 2019, 3, 41.

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