denitrification


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de·ni·tri·fi·ca·tion

(dē-nī'tri-fi-kā'shŭn),
1. Removal of nitrogen from any material or chemical compound; especially from the soil, as by certain (denitrifying) bacteria that render the nitrogen unavailable for plant growth.
2. Withdrawal of nitrogen from soil by plant growth.
Synonym(s): denitration

denitrification

the process by which nitrogenous compounds are degraded and nitrogen is returned to the air in gaseous form, e.g. the breaking down of nitrates and nitrites to gaseous nitrogen, carried out in the absence of oxygen by soil bacteria. The process is associated with waterlogged soils and low fertility. See NITROGEN CYCLE.
References in periodicals archive ?
2001) reported that at favourable soil temperatures and moistures for microbial activity, soil mineral N concentration is a regulatory factor of nitrification and denitrification rates.
Hence, the present study aims to achieve the nitrogen removal from MCW which contains a low C/N ratio via SND without external carbon sources for denitrification using a biofilm filtration system which was optimized with respect to i) nitrogen loading rate (NLR), ii) an appropriate position of air-diffuser, and iii) an aeration rate for SND.
Nitrogen studies for selected fields in the Santa Maria Valley, B, Nature and extent of directly measured denitrification losses.
GHG emission from soil through denitrification and nitrification are highly complicated.
With Reef Interests, we are bringing an efficient and long-lasting denitrification solution to consumers in the home aquarium market.
The Board, accordingly, has appointed Quam Capital Limited ("Quam Capital ") as the independent financial adviser to provide advice in relation to the franchise period of the Desulfurisation Assets or Denitrification Assets under the Franchising Contracts.
A laboratory soil-incubation experiment was undertaken to assess factors that influence denitrification and consumption of [N.
Nitrate contamination in ground and surface water is an increasingly serious environmental problem; thus, biological denitrification is an essential process in the removal of nitrogen pollutants from aqueous ecosystems (Van de Pas-Schoonen et al.
2004), the denitrification potential of subsoil is lower than of topsoil because of the lesser abundance of microorganisms in the subsoil or their lesser potential for denitrifying activity (Oehler et al.
Recently, the nitrification of organic nitrogen and ammonia (total Kjeldahl nitrogen [TKN]) to nitrate and the denitrification of nitrate to nitrogen gas have received much attention from the regulatory community.