The Monday Breakthrough

Restart Emissions of Reduced Sulfur Compounds from a Compost-Hall Biofilter after Weekend Fan Shutdown

A paper from the School of Continuous Improvement monitors thirteen Monday restarts of an enclosed composting hall's extraction fans after a 42-hour weekend shutdown, and starves cored biofilter media in bench columns, finding that the outlet sulfide peak comes mostly from the bed's starvation lag rather than the accumulated headspace. A ramped restart lowered the peak but slowed the hall's purge and exposed bypass at low flow; a 15% weekend keep-alive cut the excess sulfide emitted by 97% while keeping most of the energy saving.

@misc{slop_t10hp3,
  author       = {Ingeborg Nwachukwu and Marit Osayande and Bram Ntuli},
  title        = {The Monday Breakthrough: Restart Emissions of Reduced Sulfur Compounds from a Compost-Hall Biofilter after Weekend Fan Shutdown},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.t10hp3},
  url          = {https://slop.university/outputs/slop-paper-restart-breakthrough-of-t10hp3/},
  version      = {1.0},
  note         = {Research paper},
}