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Performance of Tio2 in photodegradation seafood wastewater

In this work, photocatalysts TiO2-HT prepared by hydrothermal method and TiO2-P25 Degussa were characterized by Energy Dispersive X-Ray analysis (EDX), X-ray powder diffraction analysis (XRD), Raman Spectroscopy, BET surface area measurements, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) and UV-Vis absorption spectroscopy and tested in degradation of recalcitrant organic pollutants in bio-treated seafood wastewater (COD > 80 mg/L). | Journal of Science and Technology 54 (4B) (2016) 80-87 PERFORMANCE OF TiO2 IN PHOTODEGRADATION SEAFOOD WASTEWATER Luu Cam Loc1,2, Ha Cam Anh2, Nguyen Tri1, Nguyen Thi Thuy Van1, Ho Linh Da2, Hoang Chi Phu2, Vo Tan Luc2, Hoang Tien Cuong1, * 1 2 Institute of Chemical Technology (VAST), 01 Mac Dinh Chi, Ho Chi Minh City HCMC University of Technology (VNU-HCM), 268 Ly Thuong Kiet, Ho Chi Minh City * Email: info@cte.com.vn Received: 15th August 2016; Accepted for publication: 10th November 2016 ABSTRACT In this work, photocatalysts TiO2-HT prepared by hydrothermal method and TiO2-P25 Degussa were characterized by Energy Dispersive X-Ray analysis (EDX), X-ray powder diffraction analysis (XRD), Raman Spectroscopy, BET surface area measurements, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) and UV-Vis absorption spectroscopy and tested in degradation of recalcitrant organic pollutants in bio-treated seafood wastewater (COD > 80 mg/L). After 9 hours of photodegradation under UV-A irradiation, COD removal efficiency reached 85.6 % and 48.9 % on TiO2-P25 and TiO2 catalysts, respectively. COD values of seafood wastewater treated by photocatalysis met the standard discharge requirement - QCVN 11:2008 – level A (COD ≤ 50 mg/L). Keywords: photocatalysis, TiO2-HT, TiO2-P25 Degussa, seafood wastewater. 1. INTRODUCTION Nowadays, seafood processing has developed to become the major economic activity which contributes to integrate the local economy into the global one. According to the report of Vietnam Association of Seafood Exporters and Producers in 2015 [1], the robust growth of seafood processing not only forced the economic restructuring, poverty reduction, but also created the work for over 4 million employees. Furthermore, it plays an important role in national defence on marine area. From 2001 to 2015, products of seafood processing, which were distributed at local area, increased continuously from 277 .