Ammonium Accumulation
Ammonium Accumulation - Related Videos
09:50
Electrochemically and Bioelectrochemically Induced Ammonium Recovery
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Cited by 31 •
2015
We demonstrate the extraction of ammonium from an ammonium-rich stream using an electrochemical and a bioelectrochemical system. The reactor setup, operation and data analysis are discussed.
01:25
Isolation of Ammonium-Oxidizing Iron Reducers from a Wetland Soil–Derived Enrichment Culture
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2025
Begin with a wetland soil-derived enrichment culture containing bacterial communities.The culture exhibits Feammox activity, ammonium oxidation coupled to ferric iron reduction, indicating the enrichment of a bacterium capable of this metabolic process.Serially dilute the culture using media.Streak the diluted samples onto test agar plates supplemented with ferric iron and ammonium.Use control plates that lack either ferric iron or ammonium, or contain ferric iron with organic carbon instead of...
01:27
Cost Accumulation and Flow
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2026
In manufacturing, production costs are accumulated and tracked to understand how resources are consumed and how they contribute to the final product. This process, known as cost accumulation, involves recording material, labor, and overhead costs and linking them to specific cost objects, such as individual products or production processes.Costs flow through inventory accounts in a sequence that mirrors the physical movement of goods. Initially, raw materials are recorded in the raw materials...
04:02
An Assay to Measure the Accumulation of a Fluorescent Antibiotic Probe in Bacterial Cells
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2025
This video demonstrates an assay to measure the accumulation of a fluorescent antibiotic probe in bacterial cells. Exposure to an efflux pump inhibitor disrupts the transmembrane proton gradient in bacterial cells, upon which a fluorophore-conjugated antibiotic is added. Inhibition of efflux pumps due to the disrupted proton gradient causes accumulation of the antibiotic inside the bacteria. Bacterial cells are lysed, and the fluorescence intensity is measured to confirm antibiotic accumulation.
06:35
Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
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Cited by 1 •
2016
This article describes construction of a series of hydrogen-bonding supramolecular clusters in crystals using primary ammonium triphenylacetates, which are recrystallized from non-polar solvents. This selective construction of the supramolecular clusters leads to effective systematical symmetric studies about a correlation between the supramolecular clusters and their components.
FAQs
Nitrification acts as a microbial removal pathway for ammonium by converting it to nitrate. Accumulation becomes more likely when organic matter decomposition, fertilizer, or wastewater adds nitrogen faster than microorganisms can process it. Comparing ammonium with evidence of ongoing nitrogen transformation can therefore help indicate whether inputs are exceeding the ecosystem’s capacity for microbial removal.
pH influences the balance between ammonium ions, NH₄⁺, and ammonia, NH₃, which is relatively more toxic. Temperature also affects this equilibrium and microbial nitrogen processing. Consequently, an ammonium measurement should be interpreted alongside environmental conditions rather than viewed in isolation, particularly when assessing possible stress on aquatic organisms.
Decomposition of organic matter can release ammonium as nitrogen-containing material breaks down. Wastewater can provide another source, while microbial removal may not keep pace with these inputs. This means accumulation can reflect natural or human-influenced nitrogen loading, and its source should be considered when interpreting conditions in soil, sediment, or water.
Measurement focuses on determining ammonium levels in soil, sediment, or water and relating those values to surrounding environmental conditions. The results support evaluation of nutrient inputs, microbial nitrogen processing, and possible ecosystem imbalance. Repeated or comparative measurements can help identify areas affected by wastewater, fertilizer use, decomposition, or other pollution sources.
Monitoring is useful when evaluating whether wastewater introduces nitrogen faster than microorganisms can remove or transform it. Ammonium measurements can help assess treatment performance and identify conditions associated with continued nutrient loading. The information also supports pollution control by linking nitrogen concentrations with potential downstream effects, including eutrophication and oxygen depletion during nitrogen processing.
In agricultural settings, ammonium data can reveal whether fertilizer-derived nitrogen is accumulating in soil or moving toward nearby water systems. This information helps evaluate nutrient inputs against microbial processing capacity and supports efforts to reduce excess loading. Interpreting measurements with pH and temperature provides better context for potential ammonia-related effects and nitrogen transformation.
Persistent accumulation can contribute to eutrophication, in which excess nutrients disrupt ecosystem balance. Nitrogen processing may also deplete oxygen, while elevated ammonia conditions can harm aquatic organisms. At the microbial level, excess ammonium can alter community composition. Together, these effects make ammonium monitoring relevant to water-quality assessment and pollution-control decisions.