Mesoporous silica synthesized from natural local kaolin as an effective adsorbent for removing of Acid Red 337 and its a
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CLAY AND MODIFIED CLAYS IN REMEDIATING ENVIRONMENTAL POLLUTANTS
Mesoporous silica synthesized from natural local kaolin as an effective adsorbent for removing of Acid Red 337 and its application in the treatment of real industrial textile effluent Ibtissem Slatni 1 & Fatima Zohra Elberrichi 2 & Joëlle Duplay 3 & Nor El Houda Fardjaoui 2 & Abdelkrim Guendouzi 4 & Oukacha Guendouzi 4 & Brahim Gasmi 5 & Feryal Akbal 6 & Ilhem Rekkab 7 Received: 27 November 2019 / Accepted: 26 March 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract This paper presents a synthesis of mesoporous silica (MS) from natural clay as a silica source using Pluronic L35 (EO11PO16EO11) as a structure-directing agent. The prepared material was characterized by XRD, X-ray fluorescence, thermogravimetric analysis, SEM, TEM, and N2 adsorption-desorption analyses. Then, mesoporous material was used for the removal of Acid Red 337 (AR337) from aqueous solution, and the treatment of real textile effluent. The effect of pH, contact time, weight of adsorbent, and initial concentration was studied in batch adsorption. The synthesized mesoporous material showed good discoloration efficiency with a 62% percentage. Experiment with real textile wastewater showed that 39%, 40%, and 31.5% of the color, TOC, and chemical oxygen demand respectively were eliminated by using 1 g of MS per liter of wastewater. Keywords Mesoporous silica (MS) . Adsorption . Acid Red 337 . Real textile effluent
Introduction In recent years, research on ordered mesoporous silica–based materials has become a major area of interest (Li et al. 2016; Responsible editor: Tito Roberto Cadaval Jr * Ibtissem Slatni [email protected] 1
Laboratoire de Chimie Physique, Université 8 Mai 1945, BP 401 Guelma, Algeria
2
Département des Sciences de la Matière, Université 8 Mai 1945, BP 401 Guelma, Algeria
3
Laboratoire d’Hydrologie et de Géochimie de Strasbourg, EOST, 1 Rue Blessig, 67084 Strasbourg Cedex, France
4
Département de Chimie, Faculté des Sciences, Dr Moulay Tahar Université de Saida, Saida, Algeria
5
Laboratoire de Physique des couches Minces et Applications, Université Mohamed Khider, Biskra, Algeria
6
Department of Environmental Engineering, Ondokuz Mayıs Üniversitesi, Samsun, Turkey
7
Laboratoire de Catalyse et Synthèse en Chimie Organique, Faculté des Sciences, Université de Tlemcen, Tlemcen, Algeria
Sheng et al. 2017; Zhao et al. 2016), due to their high specific surface area, and uniform pore size distribution and the important potential applications of mesoporous materials in catalysis (Baskaran et al. 2014), adsorption (Chaudhuri et al. 2016; Sheng et al. 2017; Tsai et al. 2015), and wastewater treatment (Chaudhuri et al. 2015). Typically, the mesoporous silica is prepared with tetramethyl orthosilicate (TMOS) or tetraethyl orthosilicate (TEOS) as silica sources (Bhuiyan et al. 2013; Tsai et al. 2015) using a cooperative surfactant templating. Many minerals rich in SiO2 or Al2O3 have been used as an alternative to silica source. Several stud
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