• Tack, Filip M. G.
• Domínguez, Elena Rosa
• Pérez Villar, Maira María
• Vandemoortel, Anneris

Abstract

Parameters were determined (pH, electrical conductivity, organic matter, total carbon, cation exchange capacity, total nitrogen, ammonia nitrogen and total phosphorus) in the two types of soils before and after being used as substrates in the filter, metal analysis was performed by atomic emission and Statgraphics centurion XV.II software was used for statistical treatment. Significant differences between the substrates before and after being used in the experiment for phosphorus and ammonia nitrogen was obtained, showing an increase of phosphorus and a decreased of ammonia nitrogen, while the total nitrogen concentration was stable before and after the experiment. The values of pH and electrical conductivity showed a decrease in soil after being used as a substrate of the filters, while the organic matter, carbonate content and cation exchange capacity was not affected. We conclude that the high content of iron in the red ferralitic soil favours the phosphorus adsorption and nitrification reactions occur in the filters by ammonia nitrogen decrease in both substrates.

Topics

• Carbon
• experiment
• Nitrogen
• iron
• electrical conductivity
• Phosphorus