Membrane technology for the processing of fruit juices and beverages has been applied mainly for clarification using ultrafiltration and microfiltration, and for concentration using reverse osmosis. The effects of product preparation, membrane selection, and operating parameters are important factors influencing filtration rate and product quality. Technological advances related to the developm...

Electrochemical stripping, a novel extension of electrodialysis, was used to recover nitrogen from source-separated urine. Urine has high nitrogen concentrations, making it an ideal waste stream for nitrogen recovery. A three-chamber, two-membrane cell was used to measure efficiencies and barriers to nitrogen migration. In preliminary batch studies, half of the influent nitrogen was recovered a...

We discuss our experimental progress toward energyefficient electrochemical CO2 capture from the atmosphere. First we discuss the latest results from an ongoing project that uses a modified-fuel-cell-based approach for CO2 concentration [1]. Using this approach, we have demonstrated CO2 capture from atmospheric concentrations with an energy consumption of less than 400 kJ/mol(CO2). We also disc...

The use of electrodialysis to remove cadmium from water has been shown to be feasible for a wide range of conditions. As much as three orders of magnitude reduction in the concentration of cadmium was observed for the feed with the concentrate stream from the process containing cadmium concentrations greater than 100,OOO ppm. The effect of cadmium concentration, pH, and added sodium chloride co...

• Theory for ion transport in multicomponent electrolytes electrodialysis. Selective removal of nitrate over chloride is observed. Strategies to increase selectivity are evaluated. Increasing the membrane thickness results an increased selectivity. Decreasing charge density We analyze selective anions electrodialysis (ED) from a mixture where all ions monovalent, both experimentally, and by mod...

background: the effects of aqueous extract of fadogia agrestis stem at the doses of 18, 36, and 72 mg/kg body weight on alloxan-induced toxicity was investigated in wistar rats. methods: in total, 35 rats of both sexes (132.80±7.22g) were randomized into five groups (a-e): animals in group a received 0.5 ml of distilled water orally on daily basis for 15 days while the alloxanized rats in group...

Contamination of toxic metals in the aquatic environment is one of the most debated problems in the world with industrial development. Thus, the minimization and recovery of harmful pollutants such as heavy metals in natural environment is very significant [1]. Various treatment technologies such as ion exchange, precipitation, ultrafiltration, reverse osmosis and electrodialysis have been used...

Membrane electrolysis (ME) is the only commercial technology using ion-exchange membranes for chromic acid recycling and recovery. On one hand, the technology has a number of promising advantages, but on the other hand, it has not yet gained common acceptance probably due to a lack of operation stability and efficiency. Published results of the research can be divided into three categories: lab...

In this study different membranes were produced, aiming to evaluate their use in electrodialysis. These membranes were produced using conventional polymer (high-impact polystyrene) and polyaniline. The membrane characterization was done by FTIR spectroscopy, scanning electron microscopy (SEM), and thermogravimetry (TGA). The studies of the zinc and proton extraction ionic transport through the ...