Held in the Crust, Released by the Rain

Delayed Ammonium Export from a Biocementation Field Trial on a Sand Embankment

A research poster from the School of Continuous Improvement follows the ammonium left by ureolytic biocementation on twelve lysimeter plots on one sand embankment through eight storms and 180 days. The post-treatment rinse carried 68% of the season's export from one-cycle plots but only 14% from six-cycle plots, which exported five times the load and released more than half of it in storms two to four; the rinse's rapid breakthrough on those plots is consistent with flow along fissures in the crust that strengthened them.

@misc{slop_ycjmxo,
  author       = {Dagny Okafor and Brynjar Obiora},
  title        = {Held in the Crust, Released by the Rain: Delayed Ammonium Export from a Biocementation Field Trial on a Sand Embankment},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.ycjmxo},
  url          = {https://slop.university/outputs/slop-poster-a-field-trial-ycjmxo/},
  version      = {1.0},
  note         = {Research poster},
}