This study focuses on the preparation and performance of an innovative, novel supported TiO2
photocatalyst to fix TiO2 Degussa P25 on Raschig glass rings. An interfacial electrostatically
charged agent polyethylene−graft−maleic anhydride is used as a binder for the TiO2. This
photocatalyst presented a stable performance during the degradation of phenolic waters. The
photodegradation process was investigated as a function of (i) the concentration of the electron
acceptor (H2O2), (ii) the intensity of the applied light, and (iii) the recirculation of the wastewaters
in the photoreactor. The TiO2 catalyst was observed to maintain the pH at values close to 7
during the reactor treatment, enabling the treated phenolic waters to be discharged directly to
a biological treating station. Modeling of the phenolic waters degradation was conducted through
a single-exponential polynomial function. This gives a systematic way to determine the most
economic use of the oxidant (H2O2) and electric energy required for the degradation process.
The most difficult and time consuming portion of depot repair is the diagnostic element (fault isolation). The writing of troubleshooting procedures and/or diagnostic flow charts and programs for automatic test equipment is an extremely labor intensive and expensive process.As a result of these high costs, the depot service environment is characterized by unique testers with specialized test programs usually written by the product designer staff. This has led to many depots for different products in countries all over the world which are inefficient to operate and do not produce the potential profitability dictated by this huge marketplace.Major advances in technology have opened up this market to enterprising high technology companies. This paper defines that opportunity, the technologies which make it possible, and a specific COTS approach to depot tester design.
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