Journal ArticleDOI
Nitrogen Loss from Soils and Oxide Surfaces
N. R. Dhar,N. N. Pant +1 more
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In this paper, it has been observed that soil loses nitrogen in the form of nitrogen gas much less when manured with sodium or potassium nitrate than when treated with ammonium sulphate, urea or other organic nitrogenous manures.Abstract:
IT has been reported1 that when a virgin soil is brought under cultivation, the percentage of total nitrogen usually falls off with time up to a limiting value. A loss of nitrogen from soils on the addition of nitrogenous compounds, especially when the conditions are favourable for oxidation, has also been observed by different investigators; but this phenomenon has been explained satisfactorily by Dhar and collaborators2, who have postulated that this type of nitrogen loss in soils is chiefly due to the formation and decomposition of the unstable ammonium nitrite produced in the processes of ammonification and nitrification. There is also the possibility of the reaction of nitrous acid on amines, amides and amino-acids which may sometimes be present in the soil or formed in the decomposition of soil organicsubstances. It has also been reported that soil loses nitrogen in the form of nitrogen gas much less when manured with sodium or potassium nitrate than when treated with ammonium sulphate, urea or other organic nitrogenous manures.read more
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Journal ArticleDOI
Photon-Driven Nitrogen Fixation: Current Progress, Thermodynamic Considerations, and Future Outlook
TL;DR: In this article, the authors review the history of the photocatalytic nitrogen fixation and examine current progress toward understanding and improving photofixation of nitrogen, supplemented by a quantitative review of the thermodynamic considerations and limitations for various reaction mechanism.
Book ChapterDOI
Mineralization of Organic Nitrogen in Soil
G. W. Harmsen,D.A. van Schreven +1 more
TL;DR: This chapter reviews important papers of research in the field of mineralization of organic nitrogen in soil, beginning with the years preceding World War II.
Journal ArticleDOI
Photocatalytic ammonia synthesis: Recent progress and future
TL;DR: In this article, a review of photocatalytic ammonia N2 fixation to NH3 is presented, focusing on fundamental aspects of ammonia synthesis, as well as effective photocatalyst and reactor design strategies.
References
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Journal ArticleDOI
Denitrification in Sunlight
TL;DR: In this article, it was shown that the loss of nitrogen from the soil, which may amount to double the quantity of nitrogen taken up by plants, is due to an oxidation process followed by a photochemical and catalytic decomposition.
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