(536e) Grafted Polystyrene Controlled Formation of Magnetic Carbon Nanocomposites for Environmental Remediation

The reduction of pollution emissions and remediation of polluted natural resources are common challenges faced by both developed and developing countries in the world. Hexavalent chromium (Cr(VI)) ions and tetrabromobisphenol A (TBBPA) are widespread in environment. The scientists and engineers in all countries have been seeking for efficient and economical methods to remove them from polluted water systems. In this work, the polystyrene controlled formation of different carbon structure nanocomposites have been prepared by calcination of the epoxide group-functionalized polystyrene as the carbon source under the different atmospheres. These carbon nanocomposites have been evaluated for the environmental remediation including the toxic Cr(VI) removal and TBBPA adsorption. Various factors influencing the Cr(VI) removal and TBBPA adsorption efficiency, such as treatment time, and initial pollutants concentration have been systematically studied. The removal kinetics and thermodynamics was determined. The results showed that these carbon nanocomposites showed a unique capability to remove pollutants from polluted water over a wide pH range. The Cr(VI) removal and TBBPA adsorption kinetics was followed the pseudo-first-order behaviour and pseudo-second-order behaviour, respectively. The calculated thermodynamic parameters suggested that the Cr(VI) removal and TBBPA adsorption process is spontaneous. These pollutants removal mechanism was also explored.

[1] H. Gu, H. Lou, J. Tian, S. Liu and Y. Tang, Journal of Materials Chemistry A, 2016, 4, 10174-10185.

[2] B. Qiu, H. Gu, X. Yan, J. Guo, Y. Wang, D. Sun, Q. Wang, M. Khan, X. Zhang, B. L. Weeks, D. P. Young, Z. Guo and S. Wei, J. Mater. Chem. A, 2, 2014, 17454-17462.

[3] F. Gao, H. Gu, H. Wang, X. Wang, B. Xiang and Z. Guo, RSC Adv., 5, 2015, 60208-60219.

[4] H. Gu,* H. Lou, D. Ling, B. Xiang, Z. Guo, RSC Adv., 6, 110134-110145, (2016)

[5] W. Jiang, Q. Cai, W. Xu, M. Yang, Y. Cai, D. D. Dionysiou and K. E. O'Shea, Environ. Sci. Technol., 2014, 48, 8078-8085.