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Showing 1 to 7 of 7 for “"iron precipitation"”.
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A comparison of the biocidal efficiencies of free chlorine, chloramines, and chlorine dioxide on the heterotrophic iron precipitating bacterium, Pseudomonas cepacia
… organisms. With regards to microbially mediated iron precipitation, an isolated heterotrophic iron precipitating bacterium was identified. An investigation of free chlorine, chloramines, and chlorine dioxide was undertaken to examine their applicability in the control and/or elimination of this …
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Treatment of acid mine drainage with Weirton steel slags
… The pH of the solution was 2.56 and the iron content was 89 ppm. The bed was constructed with tin-coated aluminum sheets and was 11&feet;8-1/4&inches; long, 2&inches; wide and 2&inches; high. The experiments were conducted by charging the bed half full with the slag particles (4 x 40 …
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Geochemical modeling of an aquifer storage and recovery project in Union County, Arkansas
… of very distinctive compositions and environmental conditions. The goal of this paper is to use the geochemical modeling software PHREEQC to simulate the scenario of injecting partially treated surface water from Ouachita River into the Sparta aquifer at the city of El Dorado. Key …
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Water Quality Factors Influencing Iron and Lead Corrosion in Drinking Water
… facing drinking water utilities. Corrosion of iron pipes can lead to economic losses and customer complaints, while lead corrosion poses a serious health risk. This work first synthesizes nearly 100 years of iron corrosion research to provide the water industry with an updated understanding of …
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The marine geochemistry of trace metals
The marine geochemical cycles of iron, copper, nickel, and cadmium were studied in order to provide a basis for oceanographic models for trace metals. Copper, nickel, and cadmium can be determined in a 100 ml seawater sample using cobalt pyrrolidine dithioacarbamate chelate coprecipitation and …
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Chemical and Biological Treatment of Acid Mine Drainage for the Removal of Heavy Metals and Acidity
… design of a process (patent pending) to remove iron from acid mine drainage (AMD) without the formation of metal hydroxide sludge. The system includes the oxidation of ferrous iron in a packed bed bioreactor, the precipitation of iron within a fluidized bed, the removal of manganese and heavy …
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An investigation into the precipitation of Fe(III) oxyhydroxides in lime neutralization processes
… products of extractive activities that pose environmental risks as they contain heavy metals. The contents of these streams, which is dominated by iron, necessitates an effective treatment protocol. The tendency of iron to precipitate as a sludge has drawn attention to the mechanisms and the …