The percent degradation of orange g dye between solar photocatalytic and microbial process / Fatin Adira Mohd Suberi

The dye in wastewater that can give the negative effect of aquatic life comes from industrial activity that is known as a major source of river pollutant. For the photocatalytic process, Orange G dye has been examined utilizing Titanium Dioxide in removing dye contaminants as photocatalyst. The sunlight reacts with TiO2 to produce degradation reactions, but under the Microbial process, bacteria Pseudomonas aeruginosa sp, has been selected for the degradation process with the help of mineral salt medium. This study was conducted to evaluate the degradation process between in both processes that involves the same variables as initial pH, time and concentration. Based on the result, the higher percent in 10 ppm, 15 ppm and 20 ppm in the presence of photocatalyst were 22.6%, 16.14%, 31.07%, respectively while the higher percent of Orange G in 10 ppm, 15 ppm and 20 ppm under Microbial catalytic were 86%, 86.33% and 91.09%, respectively the optimum concentration which is 20 ppm was chosen in this study with wavelength 477 nm. The correlation efficiency for the standard solution prepared is nearly value one which is 1.0000. The absorbance for degradation of Orange G dye was determined by using UV-Vis Spectrophotometer. From the analysis, Microbial has higher percent degradation of Orange G compared to photocatalytic process with the same concentration, pH and time.