Electrochemical degradation of Mordant Blue 13 azo dye using boron-doped diamond and dimensionally stable anodes: influence of experimental parameters and water matrix.

In this work, the electrooxidation as environmentally clean technology has been studied to the degradation of Mordant Blue 13 azo dye (MB13) using boron-doped diamond (p-Si/BDD) and oxide ruthenium titanium (Ti/RuTiO (DSA)) anodes in various water matrices: distilled water (DW), hot tap water (HTW), and simulated wastewaters with (SWS) and without surfactant (SW). The influence of experimental parameters, such as current density, initial dye concentration, electrolysis time/specific charge, and pH on the MB13 degradation rate, current efficiency, and energy consumption, has been determined. The enhanced rate of both color and chemical oxygen demand (COD) removal in sulfate aqueous solutions with BDD was observed, which indicates that sulfate (SO) radicals along with OH ones might be responsible for the degradation process.

[Postoperative infusion therapy in children].

The study investigates the influence of Voluven 6% and HAES-steril 10% on the hemodynamics and organism water balance of 40 children from 3 months to 17 years of age, which were divided into two groups according to the type of the administered colloid. It is acquired that infusion of colloids with 1:3 ratio compared to crystalloids in general volume of infused liquids (Voluven 6% in the dose of 5 ml/kg/hour in case of median blood loss of 15% of the total circulating blood volume during two hour long surgery and HAES-steril 10% in the dose of 4 ml/kg/hour in case of the blood loss up to 25% of TCBV) allows to effectively neutralize hemodynamic changes based upon administration of anesthetic agents and intraoperative fluid loss. While administration of Voluven 6% is accompanied by significant, statistically accurate decrease of lower limb impedance, which indicates the increased amount of water in them, HAES-steril 10% administration leads to redistribution of water in the body segments with its predominant significant increase in the torso.