Impact of Urea and Ammoniacal Nitrogen Wastewaters on Soil: Field Study in a Fertilizer Industry (Bahía Blanca, Argentina).

Autor: Scherger LE; Departamento de Geología, Universidad Nacional del Sur (UNS), Av. Alem 1253, 8000, Bahía Blanca, Argentina. leonardo.scherger@uns.edu.ar.; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CCT Bahía Blanca, Bahía Blanca, Argentina. leonardo.scherger@uns.edu.ar., Zanello V; Departamento de Geología, Universidad Nacional del Sur (UNS), Av. Alem 1253, 8000, Bahía Blanca, Argentina.; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CCT Bahía Blanca, Bahía Blanca, Argentina., Lexow C; Departamento de Geología, Universidad Nacional del Sur (UNS), Av. Alem 1253, 8000, Bahía Blanca, Argentina.
Jazyk: angličtina
Zdroj: Bulletin of environmental contamination and toxicology [Bull Environ Contam Toxicol] 2021 Sep; Vol. 107 (3), pp. 565-573. Date of Electronic Publication: 2021 Jun 11.
DOI: 10.1007/s00128-021-03280-x
Abstrakt: Nitrogen compounds in industrial effluents are considered a serious threat to the environment. The aim of this work is to identify the effect produced by nitrogen-rich wastewater on alkaline soils from industrial land. Two plots were irrigated with wastewater as ammoniacal nitrogen (31 to 53 g N m -2 ) and urea (167-301 g N m -2 ) sources named P1 and P2, respectively. Inorganic nitrogen (N) concentrations (N-NH 3  + N-NH 4 , N-NO 2 , N-NO 3 ), soil pH, and N-NH 3 volatilization were monitored during a 2-year period. Variations in the fate of N compounds were distinguished according to the quantity and source of N applied to the soil. A higher N input in the form of urea was related to a greater concentration of nitrates and soil acidification in the topsoil (0-30 cm). Otherwise, ammoniacal N wastewater showed greater relative ammonia losses due to volatilization. Ammonia losses were estimated as 24.2% and 7.43% of the total N applied in P1 and P2, respectively. Besides, in P1 ammoniacal N predominated over nitrate, unlike results obtained in P2. The correct management of nitrogen-rich wastewaters in fertilizer industries could greatly reduce soil and groundwater degradation.
(© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Databáze: MEDLINE
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