Copper as an Algicide and Disinfectant in Water Supplies

What's in the water: the disinfectant dilemma.

The interferons (IFNs) are glycoproteins which have, in addition to anti-viral activity, antiproliferative and immunomodulating properties (Borden, 1979; Billiau, 1981). The latter two suggested an anti-tumour potential for these substances and IFN has now been used in the treatment of a variety of malignant diseases. To date, there have been no reports of its use in human hepatocellular carcin...

development and implementation of an optimized control strategy for induction machine in an electric vehicle

in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...

Bacterial nitrification in chloraminated water supplies.

Nitrifying bacteria were detected in 64% of samples collected from five chloraminated water supplies in South Australia and in 20.7% of samples that contained more than 5.0 mg of monochloramine per liter. Laboratory experiments confirmed that nitrifying bacteria are relatively resistant to the disinfectant. Increased numbers of the bacteria were associated with accelerated decays of monochloram...

Chemical contamination of water supplies.

Man-made organic chemicals have been found in drinking water for many years. Their numbers and varieties increase as our analytical capabilities improve. The identified chemicals comprise 10 to 20% of the total organic matter present. These are volatile or low molecular weight compounds which are easily identified. Many of them are carcinogenic or mutagenic. Chlorinated compounds have been foun...

Adding fluoride to water supplies.