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Effect of Nitrification on Nitrogen Flux Across Sediment‐Water Interface

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Most studies related to nitrogen flux across the sediment‐water interface were focused on the effects of aquatic environment factors on nitrification rates, while there is no information about the effects of nitrification on other factors. In this research, laboratory experiments have been conducted to investigate nitrogen flux from the sediment cores collected from the Three-Gorge Reservoir of the Yangtze River (China). The effects of the nitrification process on the fluxes of ammonium (NH 4 +), nitrite (NO 2 ) + nitrate (NO 3 ), and total organic nitrogen (TON) across the sediment‐water interface have been examined. The release flux of TON accounted for more than 50% of the total nitrogen. The nitrification process stimulated the growth of ammonifying bacteria and accelerated the release of NH 4 + and NO x from the sediment cores during the 40-day incubation and TON during the first 10-day incubation. A 25% increase in the nitrification rate increased the release rates of NH 4 + and TON by approximately two times during the first 8-day incubation.

Keywords: ammonification; nitrification; sediment‐water interface

Document Type: Research Article


Publication date: 2008-11-01

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  • Water Environment Research (WER) is published monthly, including an annual Literature Review. A subscription to WER includes access to the latest content back to 1992, as well as access to fast track articles. An individual subscription is valid for 12 months from month of purchase.

    Water Environment Research (WER) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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