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Related Concept Videos

Inorganic Nitrogen Assimilation01:22

Inorganic Nitrogen Assimilation

Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme nitrate reductase...

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Related Experiment Video

Updated: May 22, 2026

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors
07:59

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors

Published on: December 6, 2018

[Performance of new solid carbon source materials for denitrification].

Liu Shao1, Zu-Xin Xu, Sheng Wang

  • 1College of Fisheries and Life, Shanghai Ocean University, Shanghai 201306, China. sl317500@163.com

Huan Jing Ke Xue= Huanjing Kexue
|May 25, 2012
PubMed
Summary
This summary is machine-generated.

Agricultural wastes like corncob are effective carbon sources for biological denitrification, a crucial process for converting nitrate to nitrogen gas. Corncob demonstrated superior performance compared to rice straw and sawdust in releasing carbon for this essential environmental application.

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Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
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Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
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Last Updated: May 22, 2026

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors
07:59

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

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Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
10:44

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

Area of Science:

  • Environmental Science
  • Biogeochemistry
  • Agricultural Engineering

Context:

  • Biological denitrification requires an organic carbon source for nitrate reduction to nitrogen gas.
  • Agricultural wastes are abundant and underutilized resources.
  • Identifying efficient carbon sources is key to optimizing denitrification processes.

Purpose:

  • To evaluate various agricultural wastes (corncob, rice hull, rice straw, sawdust) as potential carbon sources for denitrification.
  • To investigate the carbon release kinetics and mechanisms from these materials.
  • To determine the optimal conditions for carbon release using orthogonal experiments.

Summary:

  • Carbon release from agricultural wastes follows second-order kinetics, with rice straw releasing the most and sawdust the least.
  • Corncob was identified as a highly suitable carbon source for denitrification.
  • Increasing solid-liquid ratio and water temperature enhanced carbon release, while pH had no significant effect.

Impact:

  • This research provides valuable insights into utilizing agricultural waste for effective biological denitrification.
  • Optimizing carbon source selection and release conditions can improve nitrogen removal efficiency in wastewater treatment and environmental remediation.
  • Highlights corncob as a promising, sustainable material for denitrification applications.