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To improve the mechanical properties of the weld structure and to reduce the manufacturing costs, the welding parameters of TIG welding process needs to be optimized. The present investigation focused on the optimization of the procedure parameters of TIG joining procedure. AISI 304 materials selected as a base metal. The dimension of specimen is 200 mm × 50 mm × 3 mm. The specimen was butt-welded by the TIG welding method. Selection of input parameters is based on their significance effect on the mechanical properties of weld structure. The selected input parameters are Voltage, Current, Gas flow and root gap. The number of experiments carried out is 27, which is designed by Taguchi L27 orthogonal array using four factors and 3 levels by MINITAB-17software. Conducting tensile strength test checks the final weld quality

Advanced oxidation processes (AOPs) are widely used for the removal of health hazardous organic pollutants from industrial and municipal wastewater. Reactive Red 24, which has a complex molecular structure with azo aromatic groups, is widely used in textile industry. Degradation of Reactive Red 24 by Photo-Fenton regent has been investigated under irradiation of visible light in aqueous solution. The parameters that influence degradation such as concentration of Reactive Red 24, FeSO4, H2O2, light intensity and pH of the experimental solution were studied. The optimum condition for the photocatalytic degradation of dye was established. The degradation of dye in the dilute solution follows the first order kinetics.