Removal of acidic dye from aqueous solutions using amino-functionalized silica pillared clay as a low-cost Nano adsorbent
Paper ID : 1391-ICNS
Mahsa Hassanimarand *1, Amir Bagheri2, mansoor anbia3
1Institute for Nanoscience & Nanotechnology (INST),Sharif University of Technology, Tehran, Iran
2Chief manager of R&D department, Pishgam Parsian Co., Abadeh, Iran.
3Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Tehran, Iran.
In this study, silica-pillared clay (SPC) and functionalized samples by different amounts of poly diallyl dimethylammonium chloride (SPC/PDDA-10, SPC/PDDA-20, and SPC/PDDA-30) have been synthesized and have been employed as low-cost Nano adsorbents in the removal of Acid Blue 92 from aqueous solution. The structural variation of functionalized and unfunctionalized samples confirmed by XRD, FT-IR, and BET. The SPC/PDDA-30 by the basal spacing of 3.77 nm and specific surface area of 530 (m2 g-1) and was selected for further studies due to its effective adsorption. The optimum values of dye concentration, adsorbent dosage, contact time and pH were found 120 (mg g-1), 0.02 g, 120 min and 5, respectively by applying response surface methodology (RSM). Under these conditions, the maximum absorption capacity was obtained 294.12 (mg g-1). In light of its easy synthesis and excellent adsorption capacity, SPC/PDDA-30 can be deemed as a potentially promising adsorbent for the highly efficient elimination of anionic azo dye pollutants from aqueous solution.
Adsorption; Silica-pillared clay; Nanocomposite; Anionic azo dye; RSM.
Status : Abstract Accepted (Poster Presentation)