نتایج جستجو برای: phosphate removal
تعداد نتایج: 243089 فیلتر نتایج به سال:
Abstract This study shows the effectiveness of a novel electrocoagulation process using magnetically attracted iron scrap anodes for phosphate removal from aqueous solution. The effect contact time, reaction temperature, dose scrap, initial concentration, applied voltage, pH, magnetic force, and species competing anions on efficiency products has been investigated. techniques XRD, XPS, VSM were...
Adsorption of arsenic and chromium by mixed magnetite and maghemite nanoparticles from aqueous solution is a promising technology. In the present batch experimental study, a commercially grade nano-size 'magnetite', later identified in laboratory characterization to be mixed magnetite-maghemite nanoparticles, was used in the uptake of arsenic and chromium from different water samples. The inten...
After equilibrating cells with [32P]phosphate there were 3.7 f 0.2 mol of [32P]phosphate/mol of Band 2 subunit; this is the total measured as nonradioactive phosphate in fresh cells (Harris, H. W., Wolfe, L. C., and Lux, S . E. (1978) Fed Roc. 37, 1507). This level can be reduced in intact cells by metabolic depletion, or on purified spectrin by tryptic removal of the terminal phosphorylated pe...
The Drosophila ribosomal protein S3 has been previously demonstrated to cleave DNA containing 8-oxoguanine residues and has also been found to contain an associated apurinic/apyrimidinic (AP) lyase activity that cleaves phosphodiester bonds via a beta, delta-elimination reaction. The activity of this protein on DNA substrates containing incised AP sites was examined. A glutathione S-transferase...
The polyphosphate kinase gene from Pseudomonas aeruginosa was overexpressed in its native host, resulting in the accumulation of 100 times the polyphosphate seen with control strains. Degradation of this polyphosphate was induced by carbon starvation conditions, resulting in phosphate release into the medium. The mechanism of polyphosphate degradation is not clearly understood, but it appears t...
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