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Filtering by: Subject Nitrification Degree Field Environmental Engineering

The effect of silver ions and nanoparticles on biofilms and planktonic cultures of Nitrosomonas europaea

Creator:

Giska, Jonathan R.

Abstract:

Due to the effective antimicrobial properties of silver nanoparticles they represent a significant proportion of all consumer-‐related nanomaterials. The introduction of silver nanoparticles from these products into domestic and industrial wastewater streams poses potential complications for biological treatment systems. A critical component of biological treatment that is extremely sensitive to...

Resource Type:

Masters Thesis

Full Text:

extremely sensitive to perturbation is the nitrification process that converts
Effect of Landfill Leachate Pretreatment and SBR Operational Parameters on Nitrification Efficiency and Activated Sludge Microbial Populations

Creator:

Miller, Kierstin M.

Abstract:

A year-long, bench-scale treatability study was performed to assess whether an activated sludge sequencing batch reactor could be used to treat an influent stream of 50/50 (v/v) municipal wastewater and landfill leachate to discharge standards established by the Oregon Department of Environmental Quality. One primary obstacle that was exposed during...

Resource Type:

Masters Thesis
Effects of silver ions and nanoparticles on suspended cells and biofilms of Nitrosomonas europaea

Creator:

Barker, Leila Kelly

Abstract:

Silver nanoparticles are increasingly being incorporated into consumer products due to their broad-spectrum antimicrobial properties. The resulting influx of silver nanoparticles into wastewater may pose a threat to bacteria involved in biological wastewater treatment. Ammonia-oxidizing bacteria, which convert ammonia to nitrite in the first step of nitrification, are highly sensitive...

Resource Type:

Masters Thesis

Full Text:

-oxidizing bacteria, which convert ammonia to nitrite in the first step of nitrification, are highly