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Miscible Displacement of Nitrate through Soil Columns
Author(s) -
Corey John C.,
Nielsen Donald R.,
Kirkham Don
Publication year - 1967
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1967.03615995003100040023x
Subject(s) - nitrate , chemistry , chloride , aqueous solution , sucrose , water flow , displacement (psychology) , environmental engineering , environmental science , biochemistry , organic chemistry , psychology , psychotherapist
One hundred milliliters of an aqueous solution containing 0.55 g of CaCl 2 and 0.35 g of Ca(NO 3 ) 2 · 4H 2 O was displaced through 30‐cm long acrylic plastic columns containing soil. Velocity of water flow, sucrose concentration of the solution, and water content of the columns affected the loss of nitrate. Nitrate loss was determined by comparing breakthrough curves of nitrate with chloride. No nitrate was lost at a flow velocity of 1.32 cm/hr, but 21% was lost at 0.11 cm/hr. At a flow velocity of 0.11 cm/hr and sucrose concentrations of 0, 50, and 200 ppm, the losses of nitrate amounted to 21, 21, and 67%, respectively, of the total added. A net gain of nitrate was observed under unsaturated flow conditions.