Microfabrication of Triazine Functionalized Graphene Oxide Anchored Alginate Bead System for Effective Nutrients Removal

• Published in: Journal of chemical and engineering data 2020-05, Vol.65 (5), p.2712-2724
• Main Authors: Aswin Kumar, Ilango, Naushad, Mu, Viswanathan, Natrayasamy
• Format: Article
• Language: English
• ISSN: 0021-9568; 1520-5134
• DOI: 10.1021/acs.jced.0c00066

In this study, triaminotriazine (TAT) functionalized graphene oxide (GO) namely TATGO composite was prepared by dispersing TAT into GO for nitrate (NO3 −) and phosphate (PO4 3−) adsorption. Further, the TATGO composite was structurally modified using sodium alginate (Alg) to give the usable TATGO@Alg composite beads for NO3 − and PO4 3− adsorption. The synthesized TATGO@Alg composite beads was compared to their respective parent materials possess the enhanced sorption capacity (q e) of 51.83 and 58.46 mg g−1 toward NO3 − and PO4 3−. The prepared adsorbents were characterized using Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), thermo gravimetric analysis (TGA), X-ray diffraction (XRD), Brunauer−Emmett−Teller (BET), and energy-dispersive X-ray analysis (EDAX) techniques. The parameters liable for the NO3 − and PO4 3− adsorption process, such as contact time, pH, co-ions, adsorbent dosage, initial ions concentration, and temperature, were optimized under batch conditions. The adsorption kinetic and thermodynamic parameters were investigated for TATGO@Alg composite beads. The NO3 − and PO4 3− removal mechanism of TATGO@Alg composite beads was discussed in detail. The field studies and regeneration of TATGO@Alg composite beads were also investigated.