A study on wastewater minimization in indirect electrochemical synthesis of benzaldehyde
Development of methods of pollution prevention is a strategic orientation for environmental protection. This paper describes studies on waste minimization in benzaldehyde production by using indirect electrochemical oxidation of toluene instead of the seriously polluting traditional chemical process. The new technology developed eliminates the discharge of wastewater by recycling the reactive solution and gives a higher yield of benzaldehyde.
ANAND viscoplastic constitutive equation was introduced into the FE model for calculation of the reduction of welding residual stresses during the post weld heat treatment. The results show that ANAND equation could model the mechanical behavior under high temperature conditions. The residual stresses σ y was reduced at least 30% after heat treatment, and the tensile residual stresses on the surface of the specimen turned into compression. Further more, this constitutive equation could be used to the optimization of the heat treatment conditions.