| Functionalized Halloysite for the Removal of Acid Red 1 from Simulated Textile Wastewater |
| Paper ID : 1151-UFGNSM-FULL |
| Authors: |
|
mohammad hassan kanani1, somaye Akbari *1, mohammad haghighat kish2, Elmira Pajootan3 1424 Hafez Ave, Tehran, Iran, 15875-4413 2Textile Engineering Department of Amir Kabir University of Technology (Tehran Poly Techniqe), Tehran, Iran 3Amirkabir University of Technology |
| Abstract: |
| The adsorption behavior of acid red 1(AR1) from aqueous solution was measured to identify the ability of halloysite nanotubes (HNTs) modify to remove colored textile dye from simulated waste water. For this purpose first HNTs was reacted through Silanization reaction via γ-aminopropyltriethoxysilane (APTES) to produce HNTs-NH2. In the next step, HNTs-NH2 was reacted with succinic anhydride to produce carboxylic acid end group on the halloysite nanotubes (HNTs-COOH), as linkage between HNTs and dendrimer to produce a new adsorbent (HNTs-dendrimer). Then, amine terminated dendritic polymer was grow on the HNTs-COOH through convergent synthetic methods for dye removal. The modified adsorbent was characterized by transmission electron microscope (TEM) and Fourier transform infrared (FT-IR) spectroscopy. The result confirmed the presence of carboxylic acid group and amine terminated group in HNTs. Adsorption isotherm study using various concentrations was investigated by Langmuir, Freundlich and Temkin isotherm. Result showed the equilibrium data for AR1 fitted to Langmuir isotherm. In absorption process, equilibrium data for AR1 fitted to Langmuir isotherm and the affective adsorption factors of dye such as pH, initial dye concentration and adsorbent dosage were determined. The optimum adsorbent dosage was 0.5 g/L and the optimum pH was 3. The capacity adsorption of functionalized HNTs enhanced, from 50 mg.g-1 to 121.40 mg.g-1 for HNTs and HNTs-dendrimer, respectively. |
| Keywords: |
| Halloysite, Carboxylic acid groups,dendrimer, Adsorption |
| Status : Paper Accepted (Poster Presentation) |
