Heterogeneous electro-Fenton treatment of chemotherapeutic drug busulfan using magnetic nanocomposites as catalyst.

The rapid and efficient mineralization of the chemotherapeutic drug busulfan (BSF) as the target pollutant has been investigated for the first time by three different heterogeneous EF systems that were constructed to ensure the continuous electro-generation of HO and OH consisting of: i) a multifunctional carbon felt (CF) based cathode composed of reduced graphene oxide (rGO), iron oxide nanoparticles and carbon black (CB) (rGO-FeO/CB@CF), ii) rGO modified cathode (rGO/CB@CF) and rGO supported FeO (rGO-FeO) catalyst and iii) rGO modified cathode (rGO/CB@CF) and multi walled carbon nanotube supported FeO (MWCNT-FeO) catalyst. The effects of main variables, including the catalyst amount, applied current and initial pH were investigated. Based on the results, HO was produced by oxygen reduction reaction (ORR) on the liquid-solid interface of both fabricated cathodes.

Self-tuning GMV control of glucose concentration in fed-batch baker's yeast production.

A detailed system identification procedure and self-tuning generalized minimum variance (STGMV) control of glucose concentration during the aerobic fed-batch yeast growth were realized. In order to determine the best values of the forgetting factor (λ), initial value of the covariance matrix (α), and order of the Auto-Regressive Moving Average with eXogenous (ARMAX) model (n a, n b), transient response data obtained from the real process wereutilized. Glucose flow rate was adjusted according to the STGMV control algorithm coded in Visual Basic in an online computer connected to the system.