Evaluation of Electrochemical Stability of Sulfonated Anthraquinone-Based Acidic Electrolyte for Redox Flow Battery Application.

Despite intense research in the field of aqueous organic redox flow batteries, low molecular stability of electroactive compounds limits further commercialization. Additionally, currently used methods typically cannot differentiate between individual capacity fade mechanisms, such as degradation of electroactive compound and its cross-over through the membrane. We present a more complex method for in situ evaluation of (electro)chemical stability of electrolytes using a flow electrolyser and a double half-cell including permeation measurements of electrolyte cross-over through a membrane by a UV-VIS spectrometer.

A complex four-point method for the evaluation of ohmic and faradaic losses within a redox flow battery single-cell.

We propose a complex 4-point method for characterization of flow batteries. The distribution of ohmic and faradaic losses within a single-cell is evaluated from electrochemical impedance spectra and load curves of positive and negative half-cells measured with platinum wire pseudo-reference electrodes positioned in respective electrode compartment. The developed method can be used e.

Mathematical modeling of wastewater decolorization in a trickle-bed bioreactor.

This work focuses on mathematical modeling of removal of organic dyes from textile industry waste waters by a white-rot fungus Irpex lacteus in a trickle-bed bioreactor. We developed a mathematical model of biomass and decolorization process dynamics. The model comprises mass balances of glucose and the dye in a fungal biofilm and a liquid film.

The effect of a 473-mL (16-oz) water drink on vasovagal donor reaction rates in high-school students.

Background: Recent clinical studies found that a water drink prevented orthostatic hypotension in healthy subjects subjected to a tilt-table test. A water drink was tested as a method to decrease vasovagal donor reactions in high-school students.

Study Design And Methods: A total of 8894 high-school donations in Fall 2004 and 2005 were assigned to groups receiving or not receiving a 473-mL water drink after acceptance for whole-blood donation.