Bulk density and aggregate stability assays in percolation columns
- 1 — Ph.D., Dr.Sci. associate professor University Miguel Hernández
- 2 — Ph.D., Dr.Sci. professor University of Barcelona
- 3 — Ph.D., Dr.Sci. associate professor University Miguel Hernández
- 4 — associate professor University Miguel Hernández
Abstract
The restoration technologies in areas degraded by extractive activities require the use of their own mine spoils. Reducing deficiencies in physical properties, organic matter, and nutrients with a contribution of treated sewage sludge is proposed. This experiment was based on a controlled study using columns. The work was done with two mine spoils, both very rich in calcium carbonate. Two sewage sludge doses were undertaken (30,000 and 90,000 kg/ha of sewage sludge) in addition to a different mine spoils used as restoration substrates. The water contribution was provided by a device that simulated short duration rain. The leached water was collected 24 hours after the last application. The experiment saw the bulk density decrease and the aggregate stability increase, thereby improving the structure. The improved soil structure decreases its vulnerability to degradation processes such as erosion and compaction.
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