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Textile wastewater is known to have a large number of hazardous pollutants, intense color and high chemical oxygen demand (COD) concentration. The electron beam method is considered useful in treatment textile wastewater through chemical oxidation process. In this study, three real textile wastewaters (Sample 1: Reactive Black 5, Reactive Red 10, and Reactive Orange 13; Sample 2: Reactive Red 10 and Yellow GR; Sample 3: Reactive Black 5 and Turquoise Blue HF–G) from textile dyeing company in Ho Chi Minh city were treated by electron beam method. The effect of absorbed doses and hydrogen peroxide (H2O2) at different concentrations on the change of pH, removal capacity, COD and five day’s biological oxygen demand (BOD5) were investigated. The results indicated that color, COD, BOD5 and pH decreased with increasing absorbed dose. A sufficient amount of H2O2 in the radiation process could accelerate the color removal process. In the same condition, a color removal efficiency of ~90% was obtained with EB/H2O2, in contrast with color loss by using EB alone (~71%). These results highlighted the potential of EB radiation technology for treatment of textile dyeing wastewater.

Study on a thorough treatment of organic compounds in the polluted environment is always a prime concern of each country. In this study, silver nano doped on TiO2 (Ag nano/TiO2) samples with different initial Ag concentrations in the range of 0.5‐3 % were synthesized by electron beam irradiation method. The synthesized Ag nano/TiO2 material was characterized by transmission electron microscopy (TEM), X‐ray diffraction (XRD) and Brunauer‐Emmett‐Teller measurement (BET). The size of Ag nanoparticles was in the range of 2 ‐ 30 nm. The photocatalytic activity of Ag nano/TiO2 materials with different initial Ag contents for Rhodamine B (RhB) decomposition was also investigated. The photocatalytic efficiency of RhB degradation by Ag nano/TiO2 material was higher than that of TiO2 about 33% after 2.5 hours under visible light irradiation.