Optimization of activation process of nanoclay for removal of Reactive Navy Blue SP- BR dye using centeral composite design experiment
Publish place: The Regional Chemistry Conference
Publish Year: 1389
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
MIAUCHEMISTRY01_049
تاریخ نمایه سازی: 18 اسفند 1397
Abstract:
Activated and modified nanoclay is widely applied as adsorbent for removal of organic contaminants in soil, water and air [1]. In this work, Montmorillonite K10 nanoclay was activated by sulfuric acid and modified by cetyltrimethylammonium bromide (CTAB). The adsorption of Reactive Navy Blue SP-BR on prepared nanoclay was investigated through a batch process. In the present study central composite design, which is a widely used form of Response Surface Methodology (RSM), was employed for optimization of activation process. Also, the effect of the activation parameters (acid concentration (mol L-1), temperature (°C) and contact time (h)) was investigated. Experimental data were analyzed using Minitab 15 software. Predicted values of decolorization efficiency were found to be in good agreement with experimental values (R2= 0.9688 and Adj–R2= 0.9408, respectively). Optimization results showed that maximum decolorization efficiency was achieved at the optimum conditions of activation: temperature 50 °C, acid concentration 3.5 mol L-1 and contact time 2.5 h. The activated and modified nanoclays were analyzed by Fourier Transform Infrared (FT−IR) spectroscopy, Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) techniques.
Authors
S. Aber
Faculty of Chemistry, Tabriz University, Tabriz, Iran
F. Rasouli
Faculty of Chemistry, Tabriz University, Tabriz, Iran
D. Salari
Faculty of Chemistry, Tabriz University, Tabriz, Iran