Presented paper

IMWA2019 Students work

PAHs In Coal Tar As Water Contaminants and Their Removal by Photocatalytic Degradation

Fosso-Kankeu, Elvis (1); Mukwevho, Nthambeleni (1); Kumar, Neeraj (2); Ray, Suprakas (2,3); Waanders, Frans (1)
1: 1Water Pollution Monitoring and Remediation Initiatives Research Group, School of Chemical and Minerals Engineering, North West University, P.Bag X6001 Potchefstroom 2520, South Africa; 2: 2DST/CSIR National Centre for Nanostructured Materials, Counci

This study focuses on the identification of PAHs in coal tar produced from simulated pyrolysis and the synthesis of 2D g-C3N4 photocatalyst for the degradation of the predominant PAH in the coal tar, namely naphthalene. Herein, a 2D g-C3N4 was prepared through calcination and employed in the photo-catalytic degradation of naphthalene, in water. The as synthesized nanomaterial was characterized with scanning electron microscopy (SEM), FTIR and X-ray diffraction (XRD), and the successful synthesis confirmed. The impact of time on the photocatalytic degradation of naphthalene was investigated; it was found that visible light was required for irradiation of the catalyst, while rapid degradation was achieved in the first 25 min followed by slow degradation rate resulting in 60% removal of naphthalene in solution.

Keywords: PAHs, g-C3N4, Photocatalyic degradation, pyrolysis, Coal tar


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