Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Overview of Nitrogen Metabolism01:20

Overview of Nitrogen Metabolism

7.7K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of  ammonia, ammonium ions, nitrate, nitrite, or  nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
7.7K
Bioremediation00:46

Bioremediation

18.1K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.1K
The Nitrogen Cycle01:49

The Nitrogen Cycle

51.1K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
51.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Linoleic acid accelerates osteoarthritis progression in male rats by targeting iron-sulfur clusters to drive ferroptosis in chondrocytes.

Nature communications·2026
Same author

Selective phosphate recovery from acidic phosphogypsum leachate via Fe(III) precipitation for lithium iron phosphate precursor production.

Water research·2026
Same author

Prevalence and Genomic Characterization of mcr-1-Positive Escherichia coli from Livestock in Hunan Province, China (2016-2021).

Current microbiology·2026
Same author

Optical convolutional spectrometer.

Nature photonics·2026
Same author

Extraperitoneal colostomy reduces parastomal hernia after laparoscopic abdominoperineal resection: a propensity score-matched study.

International journal of colorectal disease·2026
Same author

SESN2 drives osteoarthritis progression by inducing MFN2-dependent mitochondrial hyperfusion in rats.

Osteoarthritis and cartilage·2026

Related Experiment Video

Updated: May 8, 2025

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
08:05

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Published on: October 7, 2020

6.0K

High-level nitrogen removal achieved by Feammox-based autotrophic nitrogen conversion.

Xiaohui Cheng1, Lanlan Hu1, Tao Liu2

  • 1Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.

Water Research X
|December 26, 2024
PubMed
Summary

Anaerobic ammonium oxidation coupled with Fe(III) reduction (Feammox) efficiently removes nitrogen from wastewater. This study shows Feammox can achieve high removal rates in a lab bioreactor, offering a sustainable autotrophic nitrogen removal option.

Keywords:
AnammoxAutotrophic nitrogen removalDissimilatory iron reduction bacteriaFeammox

More Related Videos

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
09:05

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

14.7K
Ammonia Fiber Expansion AFEX Pretreatment of Lignocellulosic Biomass
09:30

Ammonia Fiber Expansion AFEX Pretreatment of Lignocellulosic Biomass

Published on: April 18, 2020

13.4K

Related Experiment Videos

Last Updated: May 8, 2025

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
08:05

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Published on: October 7, 2020

6.0K
Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
09:05

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

14.7K
Ammonia Fiber Expansion AFEX Pretreatment of Lignocellulosic Biomass
09:30

Ammonia Fiber Expansion AFEX Pretreatment of Lignocellulosic Biomass

Published on: April 18, 2020

13.4K

Area of Science:

  • Environmental Microbiology
  • Geochemistry
  • Wastewater Treatment Engineering

Background:

  • Anaerobic ammonium oxidation coupled with Fe(III) reduction (Feammox) is a key biogeochemical process.
  • Feammox plays a significant role in nitrogen and iron cycling within various ecosystems.

Purpose of the Study:

  • To investigate the efficacy of Feammox for autotrophic nitrogen removal in a continuous up-flow bioreactor.
  • To assess the performance of Feammox with intermittent Fe(OH)3 addition in synthetic wastewater with low ammonium concentration and no organic carbon.

Main Methods:

  • Operation of a continuous laboratory up-flow bioreactor with intermittent Fe(OH)3 addition.
  • Analysis of ammonium and total nitrogen removal efficiencies and rates.
  • Estimation of Fe(III) demand for ammonium removal.
  • Abiotic and biotic batch tests to study Fe(II) oxidation with various oxidants (O2, NO2-, NO3-).

Main Results:

  • Achieved high ammonium (∼97%) and total nitrogen (∼90%) removal efficiencies within four months.
  • Demonstrated a practical nitrogen removal rate of ∼50 mg N/(L·d).
  • Estimated Fe(III) demand was significantly lower than theoretically predicted, suggesting efficient Fe(III) regeneration.
  • Identified microbial nitrate reduction and chemical oxygen reduction as key processes for Fe(III) regeneration.

Conclusions:

  • Feammox-based autotrophic nitrogen conversion is a viable and efficient method for wastewater treatment.
  • Intermittent Fe(III) addition and effective Fe(III) regeneration are crucial for sustained Feammox performance.
  • This process offers a promising alternative for sustainable nitrogen removal in wastewater treatment plants.