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Interaction between Nitrous Oxide Formation and Methane Oxidation in Soils: Influence of Cation Exchange Phenomena
Author(s) -
De Visscher Alex,
Boeckx Pascal,
Van Cleemput Oswald
Publication year - 1998
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq1998.00472425002700030027x
Subject(s) - nitrous oxide , chemistry , soil water , anaerobic oxidation of methane , methane , ammonium , ion exchange , cation exchange capacity , inorganic chemistry , environmental chemistry , oxide , kinetic energy , ion , soil science , environmental science , organic chemistry , physics , quantum mechanics
Ammonium (NH + ) inhibits the microbial oxidation of methane (CH 4 ), and gives rise to the formation of nitrous oxide (N 2 O) in aerobic soils. However, the NH + 4 concentration in the soil water is not necessarily proportional to the total NH + 4 concentration in the soil, due to cation exchange or fixation phenomena. It was found that introducing the concept of ion exchange or fixation in kinetic models on CH 4 consumption and N 2 O formation can increase our knowledge on these processes in soils. A fit of these kinetic models with experimental data showed a standard deviation of slightly more than 10%. The effects of NH + 4 on CH 4 oxidation and N 2 O formation can only be compared in soils with the same cation exchange capacity (CEC).